TABLE of contents. Metal Oxide Varistor (MOV) Varistors-5D Series Varistors-7D Series Varistors-10D Series... 5

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1 TABLE of contents Subject Page Metal Oxide Varistor (MOV) Varistors-5D Series Varistors-7D Series Varistors-10D Series Varistors-14D Series Varistors-20D Series Varistors-25D Series Varistors-5E 7E Series Varistors-10E 14E Series Varistors-18E 20E Series Packing Method (5ø - 25ø Series) Taping Specifications - 5ø and 7ø Taping Specifications - 10ø and 14ø Taping Specifications - 18ø and 20ø Big Size Varistor - 32D Series Big Size Varistor - 34mm Single Series Big Size Varistor - 34mm Dual Series Big Size Varistor - 40D Series Big Size Varistor - 53D Series Thermo-Fuse Varistor (FSR) CPTC Degaussers for Color CRT TV & Monitor CPTC Protectors CPTC for Mosquito Killer

2 METAL OXIDE VARISTOR (MOV) How to Order SR 241 K 10 D S 40 X Type code Varistor Tolerance Disk Size Code Disk Type Lead Type or Taping Code Lead Cutting Special Request SR: Walsin Varistor (DC volt) (From 180 to 112) Two significant digits Followed by no. of zeros 180=18volt 101=100volt 102=1000volt J:+/-5% K:+/-10% 05 : 5mm 07 : 7mm 10 : 10mm 14 : 14mm 18 : 18mm 20 : 20mm 25 : 25mm D: Standard disk type E : High energy disk type V : Super high energy series S : Straight Lead L : Inline Crimped O: Outward Crimped I : Inward Crimped Taping Code : Please refer to page 12 for taping codes. Lead Cutting for Bulk Packing: 40=4.0±1.0mm 65=±1.0mm P1=11±1.0mm No code 25mm Special leadcutting tolerance Special leadspacing (Please see below) Special varistor voltage range...etc Varistor Special Request F: 0.5mm lead length tolerance for short lead cutting X: 7.5mm lead spacing for 20D and 20E (lead wire is 0.8mm diameter) Z: 5mm lead spacing for 10D(E), 14D(E) H: Special request Varistor Part Number Examples : Ex.1. SR241K07DIT14: 7mm, 241K, inward crimped lead and reel taped. Ex.2. SR361K10DI45: 10mm, 361K, bulk packing, inward crimped lead, lead cutting length 4.5 ±1.0mm Ex.3. SR621K20EOP2: 20mm, 621K, high energy, bulk, outward crimped lead, lead spacing 12mm±1.0mm. Ex.4. SR271K20DO65X: 20mm, 271K, bulk, outward crimped lead, lead spacing 7.5 mm, lead cutting ± 1.0mm Ex.5. SR241K10DS40F: 10mm, 241K, bulk, straight lead, lead cutting 4.0 ± 0.5mm. Dimensions Quick Reference : If specific item s dimensions, please contact sales Series 5D,5E 7D,7E 10D,10E 14D,14E 18E 20D,20E 25D Dmax d* W** Hmax Tmax *±0.02 **±1.0 (Unit: mm) Inward Crimped Straight Lead Outward Crimped Inline Crimped Remark: The lead length (L) is 25mm minimum unless requested by customers; please refer to lead cutting code in How to Order. 1

3 METAL OXIDE VARISTOR (MOV) Characteristics High performance transient voltage suppression Short response time to surge voltage Low standby power dissipation Excellent clamping characteristics High performance withstanding surge currents High reliability UL, CSA, VDE and CQC recognized Definition of Varistor Terms RMS, DC : The maximum designated values of power system voltage that may be applied continuously between the terminals of a device. Varistor : Test characteristic that is used to classify varistors by type. A test current of 1mA DC is typically used to determine varistor voltage classification type. Varistor voltage clamping characteristics can be defined at various test levels. Peak Single Pulse Transient : surge current, 8/20 µs waveform which a varistor is rated to withstand for a single surge. Single Pulse Transient Energy : allowable energy for a single impulse (see specified waveforms). Clamping : Measured peak voltage across the device terminals when a current impulse of specified amplitude and waveform is conducted through the varistor. Typical Capacitance : Typical capacitance values are measured at a test frequency of 1kHz. Capacitance values are only for reference purpose only, not subject to outgoing inspection. Energy Derating Versus Temperature Applications Surge protection in: Consumer electronics Industrial electronics Communication electronics Measuring and controlling systems Electronic home appliances Protection against surges induced by lighting striking incoming power lines. Suppression of surges caused by switching inductive loads such as transformers, relays and coils. Protection of rectification diodes, SCRs, power transistors, semiconductor devices, etc. General Characteristics Storage Temperature : 55 C to +125 C Surface Temperature : 125 C Ambient Temperature : 55 C to +85 C (without derating) -Temperature Coefficient : < 0.05% / C Insulation Resistance : 1000 Mega-ohm minimum Hi Pot (Leads To Case, 1 Min.) : 2500 VDC Typical Response Time : <15 Nero-seconds Epoxy Rating : 94V-0 / Energy Derating (>85 C ) : 2.5% / C DC Leakage : 200µA maximum (at rated DC working voltage ) Solderability : MIL-STD-202F Power Dissipation Ratings(P, in-watts) : Disc Size 11Vac~40Vac 50Vac~680Vac 5mm mm mm mm mm mm mm mm mm(single) mm(dual) mm mm 2.5 All definitions are according to IEEE specifications C Peak Per Pulse Versus Pulse Duration Number of Pulses on Order From 100 % Respectively : 1 Pulse 10 Pulses 10 2 Pulses 10 3 Pulses 10 4 Pulses 10 5 Pulses 10 6 Pulses 2

4 VARISTORS 5D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR180K05D SR220K05D SR270K05D SR330K05D SR390K05D SR470K05D SR560K05D SR680K05D SR820K05D SR101K05D SR121K05D SR151K05D SR181K05D SR201K05D SR221K05D SR241K05D SR271K05D SR301K05D SR331K05D SR361K05D SR391K05D SR431K05D SR471K05D SR511K05D SR561K05D SR621K05D SR681K05D Remark : 1. : : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). 3. Varistor voltage: 5ø series measured 1mA DC pulse current. Typical PF Safety Approval 3

5 VARISTORS 7D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR180K07D SR220K07D SR270K07D SR330K07D SR390K07D SR470K07D SR560K07D SR680K07D SR820K07D SR101K07D SR121K07D SR151K07D SR181K07D SR201K07D SR221K07D SR241K07D SR271K07D SR301K07D SR331K07D SR361K07D SR391K07D SR431K07D SR471K07D SR511K07D SR561K07D SR621K07D SR681K07D Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). Typical PF Safety Approval 4

6 VARISTORS 10D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR180K10D SR220K10D SR270K10D SR330K10D SR390K10D SR470K10D SR560K10D SR680K10D SR820K10D SR101K10D SR121K10D SR151K10D SR181K10D SR201K10D SR221K10D SR241K10D SR271K10D SR301K10D SR331K10D SR361K10D SR391K10D SR431K10D SR471K10D SR511K10D SR561K10D SR621K10D SR681K10D SR751K10D SR781K10D SR821K10D SR911K10D SR102K10D SR112K10D Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). Typical PF Safety Approval 5

7 VARISTORS 14D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR180K14D SR220K14D SR270K14D SR330K14D SR390K14D SR470K14D SR560K14D SR680K14D SR820K14D SR101K14D SR121K14D SR151K14D SR181K14D SR201K14D SR221K14D SR241K14D SR271K14D SR301K14D SR331K14D SR361K14D SR391K14D SR431K14D SR471K14D SR511K14D SR561K14D SR621K14D SR681K14D SR751K14D SR781K14D SR821K14D SR911K14D SR102K14D SR112K14D Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). Typical PF Safety Approval 6

8 VARISTORS 20D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR180K20D SR220K20D SR270K20D SR330K20D SR390K20D SR470K20D SR560K20D SR680K20D SR820K20D SR101K20D SR121K20D SR151K20D SR181K20D SR201K20D SR221K20D SR241K20D SR271K20D SR301K20D SR331K20D SR361K20D SR391K20D SR431K20D SR471K20D SR511K20D SR561K20D SR621K20D SR681K20D SR751K20D SR781K20D SR821K20D SR911K20D SR102K20D SR112K20D Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). Typical PF Safety Approval 7

9 VARISTORS 25D SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR181K25D SR201K25D SR221K25D SR241K25D SR271K25D SR301K25D SR331K25D SR361K25D SR391K25D R431K25D SR471K25D SR511K25D SR561K25D SR621K25D SR681K25D SR751K25D SR781K25D SR821K25D SR911K25D SR102K25D SR112K25D Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA 22.2 #1 certified (File # LR and LR ). Vc Ip 2ms Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201, IEC / / (Certificate # 5932, , ). (6) CQC recognized for all part numbers (CQC ). Typical PF Safety Approval 8

10 VARISTORS 5E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR820K05E SR181K05E SR201K05E SR221K05E SR241K05E SR271K05E SR301K05E SR331K05E SR361K05E SR391K05E SR431K05E SR471K05E SR511K05E SR561K05E SR621K05E SR681K05E Vc Ip Engergy 10/1000µs Joules Typical PF Safety Approval VARISTORS 7E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping SR820K07E SR181K07E SR201K07E SR221K07E SR241K07E SR271K07E SR301K07E SR331K07E SR361K07E SR391K07E SR431K07E SR471K07E SR511K07E SR561K07E SR611K07E SR681K07E Remark : 1. : Suffix adding; please refer How to Order for details. 2. All parts approved for 5E~20E as follows: (1) : UL 1449 recognized (File # E172311). (2) : UL 497B recognized (File # E199593). (3) : UL 1414 recognized (File # E182369). (4) : CSA22.2 #1 certified (Certificate # ). Vc Ip Engergy 10/1000µs Joules (5) : VDE/CECC 42000/42200/42201 (Certificate # ), VDE approval of O5E and 20E series is pending. (6) CQC recognized for all E series (CQC ~ CQC ). 3. Varistor voltage: All series are measured 1mA DC pulse current. Typical PF Safety Approval 9

11 VARISTORS 10E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping Vc SR820K10E SR181K10E SR201K10E SR221K10E SR241K10E SR271K10E SR301K10E SR331K10E SR361K10E SR391K10E SR431K10E SR471K10E SR511K10E SR561K10E SR621K10E SR681K10E SR751K10E SR781K10E SR821K10E SR911K10E SR102K10E SR112K10E Ip Engergy 10/1000µs Joules Typical PF Safety Approval VARISTORS 14E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping Vc SR820K14E SR181K14E SR201K14E SR221K14E SR241K14E SR271K14E SR301K14E SR331K14E SR361K14E SR391K14E SR431K14E SR471K14E SR511K14E SR561K14E SR621K14E SR681K14E SR751K14E SR781K14E SR821K14E SR911K14E SR102K14E SR112K14E Ip Engergy 10/1000µs Joules Typical PF Safety Approval 10

12 VARISTORS 18E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping Vc SR820K18E SR181K18E SR201K18E SR221K18E SR241K18E SR271K18E SR301K18E SR331K18E SR361K18E SR391K18E SR431K18E SR471K18E SR511K18E SR561K18E SR621K18E SR681K18E SR751K18E SR781K18E SR821K18E SR911K18E SR102K18E SR112K18E Ip Engergy 10/1000µs Joules Typical PF Safety Approval VARISTORS 20E SERIES Part Number ACrms Allowable DC Varistor DC Min Max Withstanding Surge 1 time Clamping Vc SR820K20E SR181K20E SR201K20E SR221K20E SR241K20E SR271K20E SR301K20E SR331K20E SR361K20E SR391K20E SR431K20E SR471K20E SR511K20E SR561K20E SR621K20E SR681K20E SR751K20E SR781K20E SR821K20E SR911K20E SR102K20E SR112K20E Ip Engergy 10/1000µs Joules Typical PF Safety Approval 11

13 PACKING METHOD (5ø - 25ø SERIES) A.Bulk Packing : Disk size Q ty Q ty BDV mm pcs/bag pcs/carton Diameter 05 All Diameter 07 All Diameter K-471K Above 511K Diameter K-751K Above 781K Diameter 18 All Diameter K-621K Above 681K Diameter K-621K Above 681K L approx.395mm W approx.285mm H approx. 180mm B.Tape and Reel : Disk size Varistor AMMO BOX REEL PCS / BOX BOX / CARTON PCS / REEL REELS / BOX BOX / CARTON 5ø 431K ø 471K ø 431K ø 471K ø 431K ø 471K ø 431K ø 471K ø 431K ø 471K ø 431K ø 471K Note: Ammo box and reel quantities may vary. Please contact sales for details. Dimensions of Ammo Box and Real : Disk size A (max.) B (max.) C (max.) 5ø 50mm 270mm 350mm 7ø 50mm 270mm 350mm 10ø 70mm 270mm 370mm 14ø 70mm 270mm 370mm 18ø.,20ø 70mm 270mm 370mm W approx. 50mm D 350ø max A approx. 30ø B approx. 95ø Taping Code : Lead type Varistor series Lead spacing Packing type Straight Outward crimped Inward crimped Inline crimped 5D, 5E 5 mm Ammo T11 T17 T1D T1W Reel T1 T3 T14 T32 7D, 7E 5 mm Ammo T11 T17 T1D T1W Reel T1 T3 T14 T32 10D, 10E 7.5 mm Ammo T36 T1U T8 T43 Reel T19 T1N T16 T4 14D, 14E 7.5 mm Ammo T36 T1U T8 T43 Reel T19 T1N T16 T4 Ammo T44 T45 T40 T2 7.5 mm 20D, 20E Reel T1H T1X T4X T25 (18E) Ammo T5 T50 T35 T60 10 mm Reel T30 T2X T2D T3X For 18E Series, we provide 7.5mm lead spacing only. 12

14 TAPING SPECIFICATIONS - 5ø AND 7ø Item Taping Code Body Diameter Lead Wire Diameter Pitch of Component Feed Hole Pitch Feed Hole Center to Lead Lead to Lead Distance (Center to Center) Component Alignment Base paper Tape Width Adhesive Tape Width Hole Position Adhesive Tape Border Component Height Lead-Wire Clinch Height Lead-Wire Protrusion Feed Hole Diameter Total Tape Thickness Length of Clipped Lead Component Height from Seating Plane Hole Center to Component Center D d P P0 P1 F h W W0 W1 W2 H1 H0 Lx D0 t L A P2 Disk Size 5ø (5D, 5E) 7ø (7D, 7E) T11, T1 T17, T3, T14, T1D T32, T1W T11, T1 T17, T3, T14, T1D T32, T1W 7Max 7Max 7Max 9Max 9Max 9Max Max 2.0Max 2.0Max 2.0Max 2.0Max 2.0Max 18* 18* 18* 18* 18* 18* 10Min 10Min 10Min 10Min 10Min 10Min Max 1.5Max 1.5Max 1.5Max 1.5Max 1.5Max 30Max 30Max 30Max 32Max 32Max 30Max Max 1.0Max 1.0Max 1.0Max 1.0Max 1.0Max < 0.7 < 0.7 < 0.7 < 0.7 < 0.7 < Max 11Max 11Max 11Max 11Max 11Max 13Max 13Max 15Max 15Max Based on EIA-468-B Specification * Tolerances are +1.0 and -0.5 All dimensions are in millimeters. 13

15 TAPING SPECIFICATIONS - 10ø AND 14ø Item Taping Code Body Diameter Lead Wire Diameter Pitch of Component Hole Center to Component Center Feed Hole Pitch Lead to Lead Distance (Center to Center) Component Alignment Base paper Tape Width Adhesive Tape Width Hole Position Adhesive Tape Border Component Height Lead-Wire Protrusion Feed Hole Diameter Total Tape Thickness Length of Clipped Lead Component Height from Seating Plane D d P P2 P0 F h W W0 W1 W2 H1 Lx D0 t L A Disk Size 10ø (10D, 10E) 14ø (14D, 14E) T19, T36 T1N, T1U, T8, T16 T43, T4 T19, T36 T1N, T1U, T8, T16 T43, T4 14Max 14Max 14Max 17.5Max 17.5Max 17.5Max Max 2.0Max 2.0Max 2.0Max 2.0Max 2.0Max 18* 18* 18* 18* 18* 18* 10Min 10Min 10Min 10Min 10Min 10Min Max 1.5Max 1.5Max 1.5Max 1.5Max 1.5Max 33Max 38.5Max 35.5Max 37Max 40Max 40Max 1.0Max 1.0Max 1.0Max 1.0Max 1.0Max 1.0Max < 0.7 < 0.7 < 0.7 < 0.7 < 0.7 < Max 11Max 11Max 11Max 11Max 11Max 19.5Max 19.5Max 22.5Max 22.5Max Based on EIA-468-B Specification * Tolerances are +1 and -0.5 All dimensions are in millimeters. 14

16 TAPING SPECIFICATIONS - 18ø AND 20ø Item Taping Code Body Diameter Lead Wire Diameter Pitch of Component Feed Hole Pitch Hole Center to Component Center Lead to Lead Distance (Center to Center) Component Alignment Base paper Tape Width Adhesive Tape Width Hole Position Adhesive Tape Border Component Height Lead-Wire Protrusion Feed Hole Diameter Total Tape Thickness Length of Clipped Lead Component Height from Seating Plane Based on EIA-468-B Specification All dimensions are in millimeters. * Tolerances are +1 and -0.5 ** For 18, D=22max, H 1 =46max and A=26max. D d P P0 P2 F h W W0 W1 W2 H1 LX D0 t L A 20ø (20D, 20E), 18ø (18E) Lead Spacing 7.5 mm Disk Size 20ø (20D, 20E) Lead Spacing 10.0 mm T44, T1H T45, T1X, T40, T4X T2, T25 T5, T30 T50, T2X, T35, T2D T60, T3X 24Max** 24Max** 24Max** 24Max 24Max 24Max Max 2.0Max 2.0Max 2.0Max 2.0Max 2.0Max 18* 18* 18* 18* 18* 18* 10Min 10Min 10Min 10Min 10Min 10Min Max 1.5Max 1.5Max 1.5Max 1.5Max 1.5Max 48Max** 48Max** 48Max** 48Max 48Max 48Max 1.0Max 1.0Max 1.0Max 1.0Max 1.0Max 1.0Max < 0.7 < 0.7 < 0.7 < 0.7 < 0.7 < Max 11Max 11Max 11Max 11Max 11Max 29Max** 28Max** 29Max 28Max 15

17 BIG SIZE VARISTOR 32D SERIES Part Number Ratings Continuous Single Pulse Transient Energy Peak AC RMS DC 10/1000µs 8/20µs Jules K 1mA DC Min Max Electrical Characteristics Clamping Typical Tmax. s d Test PF mm mm mm SR201K32D ± ±1.0 SR221K32D ± ±1.0 SR241K32D ± ±1.0 SR271K32D ± ±1.0 SR331K32D ± ±1.0 SR361K32D ± ±1.0 SR391K32D ± ±1.0 SR431K32D ± ±1.0 SR471K32D ± ±1.0 SR511K32D ± ±1.0 SR621K32D ± ±1.0 SR681K32D ± ±1.0 SR751K32D ± ±1.0 SR781K32D ± ±1.0 SR821K32D ± ±1.0 SR911K32D ± ±1.0 SR951K32D ± ±1.0 SR102K32D ± ±1.0 SR112K32D ± ±1.0 - Part Number Suffix Code ( ie: SR201K32DML) No suffix - Straight Lead L Straight Lead Left Side Lead Orientation Q 90 Bend Lead R Uncoated Disk without Leads F Un-coated Disk with Leads M One Side Coated Disk with one Right Orientation Lead only ML One Side coated Disk with one Left Orientation Lead only N Uncoated Disk with one Right Orientation Lead only NL Uncoated Disk with one Left Orientation Lead only UL 1449 recognized (File # E172311) UL 1414 recognized (File # E182369) CSA 22.2 #1 certified (File #206608M000) Approvals not applicable for uncoated disk product Packing: 1,000pcs per Walsin varistor standard carton listed in bulk packing section 16

18 BIG SIZE VARISTOR 34MM SINGLE SERIES Part Number Ratings Continuous Single Pulse Transient Energy Peak AC RMS DC 10/1000µs 8/20µs Jules K Electrical Characteristics Clamping Typical Varistor Tmax. s d 1mA Test Min Max PF mm mm mm SR201K34R SR221K34R SR241K34R SR271K34R SR301K34R SR331K34R SR361K34R SR391K34R SR431K34R SR471K34R SR511K34R SR561K34R SR621K34R SR681K34R SR751K34R SR781K34R SR821K34R SR911K34R SR951K34R SR102K34R SR112K34R Part Number Suffix Code (i.e.: SR201K34RML) No suffix Straight Lead L Straight Lead Left Side Lead Orientation Q 90 Bend Lead R Uncoated Disk without Leads F Un-coated Disk with Leads M One Side Coated Disk with one Right Orientation Lead only ML One Side coated Disk with one Left Orientation Lead only N Uncoated Disk with one Right Orientation Lead only NL Uncoated Disk with one Left Orientation Lead only UL 1449 recognized (File # ) UL 1414 pending CSA 22.2 #1 recognized (File # ) Approvals not applicable for uncoated disk product Packing: 1,000pcs per Walsin varistor standard carton listed in bulk packing section 17

19 BIG SIZE VARISTOR 34MM DUAL SERIES Part Number Continuous AC RMS DC Ratings Energy 10/1000µs Jules Single Pulse Transient Peak 8/20µs 8/20µs K Lead 1-3 K Lead 1-2 or 2-3 1mA DC Min SR221K34RD SR221K34RD SR241K34RD SR271K34RD SR301K34RD SR331K34RD SR361K34RD SR391K34RD SR431K34RD SR471K34RD SR511K34RD SR561K34RD SR621K34RD SR681K34RD SR751K34RD SR781K34RD SR821K34RD SR911K34RD SR951K34RD SR102K34RD SR112K34RD Max Ratings Test 8/20ms Typical Capacitance Tmax. S - Part Number Suffix Code ( ie: SR201K34RD) No suffix - Straight Lead Q 90 Bend Lead UL 1449 recognized (File # ) UL 1414 pending CSA 22.2 #1 recognized (File # ) Approvals not applicable for uncoated disk product Packing: 1,000pcs per Walsin varistor standard carton listed in bulk packing section 18

20 BIG SIZE VARISTOR 40D SERIES Ratings Ratings Part Number Continuous AC RMS DC Single Pulse Transient Energy Peak 10/1000µs 8/20µs Jules K 1mA DC Min Max Clamping Typical Tmax. S D Test PF mm mm mm SR201K40D ± ±1.0 SR221K40D ± ±1.0 SR241K40D ± ±1.0 SR271K40D ± ±1.0 SR331K40D ± ±1.0 SR361K40D ± ±1.0 SR391K40D ± ±1.0 SR431K40D ± ±1.0 SR471K40D ± ±1.0 SR511K40D ± ±1.0 SR621K40D ± ±1.0 SR681K40D ± ±1.0 SR751K40D ± ±1.0 SR781K40D ± ±1.0 SR821K40D ± ±1.0 SR911K40D ± ±1.0 SR951K40D ± ±1.0 SR102K40D ± ±1.0 SR112K40D ± ±1.0 Part Number Suffix Code ( ie: SR201K40DQ) No suffix - Straight Lead L Straight Lead Left Side Lead Orientation Q 90 Bend Lead R Uncoated Disk without Leads F Un-coated Disk with Leads M One Side Coated Disk with one Right Orientation Lead only ML One Side coated Disk with one Left Orientation Lead only N Uncoated Disk with one Right Orientation Lead only NL Uncoated Disk with one Left Orientation Lead only UL 1449 recognized (File # E172311) UL 1414 recognized (File # E182369) CSA 22.2 #1 certified (File #206608M000) Approvals not applicable for uncoated disk product Packing: 160 to 280 pcs, up to varistor voltage, per Walsin varistor standard carton listed in bulk packing section 19

21 BIG SIZE VARISTOR 53D SERIES Ratings Ratings Part Number Continuous AC RMS DC Single Pulse Transient Energy Peak 10/1000µs 8/20µs Jules K 1mA DC Min Max Clamping Typical Tmax. S D Test PF mm mm mm SR201K53D ± SR221K53D ± SR241K53D ± SR271K53D ± SR331K53D ± SR361K53D ± SR391K53D ± SR431K53D ± SR471K53D ± SR511K53D ± SR561K53D ± SR621K53D ± SR681K53D ± SR751K53D ± SR781K53D ± SR821K53D ± SR911K53D ± SR951K53D ± SR102K53D ± SR112K53D ± SR122K53D ± Part Number Suffix Code ( ie: SR201K53DQ) No suffix - Straight Lead Q 90 Bend Lead F Un-coated Disk with Leads ML One Side coated Disk with one Left Orientation Lead only NL Uncoated Disk with one Left Orientation Lead only UL 1449 recognized (File # ) UL 1414 pending CSA 22.2 #1 recognized (File # ) Approvals not applicable for uncoated disk product Packing: Please contact sales for packing information L Straight Lead Left Side Lead Orientation R Uncoated Disk without Leads M One Side Coated Disk with one Right Orientation Lead only N Uncoated Disk with one Right Orientation Lead only 20

22 THERMO-FUSE VARISTOR (FSR) How to Order FSR 241 K 20 E S Type code Varistor Tolerance Disk Size Code Type Pack and Lead Type Special Request FSR: SINCERA* VARISTOR with thermofuse attached (DC volt) (From 180 to 112) Two significant digits Followed by no. of zeros 180=18volt 101=100volt 102=1000volt K : +/-10% J : +/-5% 18 : 18mm 20 : 20mm 25 : 25mm 32 : 32mm D : Standard disk Series E : High energy disk series Bulk packing : S : Straight lead L : In line crimped Tape packing : T : Reel packing Lead spacing * SINCERA is a brand name of Varistor and Ceramic PTC of Walsin Technology Corp. Description Walsin Thermo-Fuse Varistor (FSR) is a family of Transient Surge Suppression products. FSR is a three-lead Thermally Protected Metal Oxide Varistor. One lead of the FSR varistor is connected to a thermal fuse, it will automatically open-circuit when the varistor is under sustained abnormal over- voltage condition. The FSR series is designed to meet the abnormal over-voltage requirements of UL 1449, Section 37. Traditional Metal Oxide Varistor (MOV) withstands 150% of its rated voltage for a given duration. But MOV may fail to a short-circuit condition or fail open when subjected to sustained steady-state over-voltage above its rated specifications. Walsin s FSR has a thermal fuse incorporated with its MOV disk that responds to the MOV temperature and disconnects the MOV from power should the temperature exceed a certain level. Therefore, Walsin s FSR provides a real Fail Safe protection to sensitive downstream electric components. Features Low Leakage under normal operating voltage. Meets UL 1449 abnormal over-voltage test (5A, 2.5A, 0.5A and 0.125A). UL1449 recognized which includes selected test from UL1020 regarding thermal cutoff. (UL file #E172311) UL1414 recognized (UL file #E182369). No voltage type recognized below 120 VAC. Ratings -55 C to 85 C Temperature Range -55 C to 125 C Storage Temperature Range -Temperature Coefficient: < 0.01 % / C Hi-Pot Encapsulation: 2500 Vdc Insulation Resistance: >1000 MΩ Typical Response Time: <15 n seconds Continuous RMS 100 ma Isolation Capability 600 Vac (When thermal element is open) Dimensions FSR Series Dmax Hmax dø(nom.) a b FSR (0.83) 24.0 (0.94) 0.8 (0.031) 7.5 (0.30) (0.26) FSR (0.94) 29.0 (1.14) 1.0 (0.039) 10.0 (0.39) (0.26) FSR (1.12) 33.0 (1.30) 1.0 (0.039) 12.7 (0.50) (0.26) FSR (1.57) 45.0 (1.77) 1.5 (0.059) 17.0 (0.67) 8.0 (0.31) (1) Unit: mm (inch) (2) a ± 1.0 (0.039), b ± 1.2 (0.047) (3) 1mm lead diameter is available upon special request for 18mm. Please add suffix R after part number (4) For 25mm min. fuse lead (lead #3), please add suffix FL after part number 21

23 THERMO-FUSE VARISTOR (FSR) Dimension (Continued) Varistor FSR18 Series FSR20 Series FSR25 Series FSR32 Series Type Tmax W1 W2 Tmax W1 W2 Tmax W1 W2 Tmax W1 W2 180K (0.28) 1.7 (0.07) 3.3 (0.13) K (0.28) 1.8 (0.07) 3.4 (0.13) K (0.28) 2.0 (0.08) 3.6 (0.14) K (0.29) 2.1 (0.08) 3.7 (0.15) K (0.29) 2.4 (0.09) 4.0 (0.16) K (0.29) 2.7 (0.11) 4.3 (0.17) K (0.30) 3.0 (0.12) 4.6 (0.18) K (0.30) 3.1 (0.12) 4.7 (0.19) K 7.4 (0.29) 1.8 (0.07) 3.3 (0.13) 7.6 (0.30) 1.8 (0.07) 3.3 (0.13) K 7.4 (0.29) 1.9 (0.07) 3.4 (0.13) 7.6 (0.30) 1.9 (0.07) 3.4 (0.13) K 7.8 (0.31) 2.0 (0.08) 3.5 (0.14) 7.9 (0.31) 2.0 (0.08) 3.6 (0.14) 7.9 (0.31) 2.1 (0.08) 3.7 (0.15) 7.5 (0.30) 2.6 (1.02) 4.1 (1.61) 221K 8.0 (0.31) 2.0 (0.08) 3.6 (0.14) 8.1 (0.32) 2.1 (0.08) 3.7 (0.15) 8.2 (0.32) 2.2 (0.09) 3.8 (0.15) 7.8 (3.07) 2.7 (1.06) 4.2 (1.65) 241K 8.1 (0.32) 2.1 (0.08) 3.7 (0.15) 8.2 (0.32) 2.2 (0.09) 3.8 (0.15) 8.3 (0.33) 2.3 (0.09) 3.9 (0.15) 7.8 (3.07) 2.8 (1.10) 4.3 (1.69) 271K 8.2 (0.32) 2.2 (0.09) 3.8 (0.15) 8.3 (0.33) 2.3 (0.09) 3.9 (0.15) 8.4 (0.33) 2.4 (0.09) 4.0 (0.16) 8.1 (3.19) 2.9 (1.14) 4.4 (1.73) 301K 8.4 (0.33) 2.4 (0.09) 4.0 (0.16) 8.4 (0.33) 2.5 (0.10) 4.1 (0.16) 8.6 (0.34) 2.6 (0.10) 4.2 (0.17) 331K 8.5 (0.33) 2.6 (0.10) 4.2 (0.17) 8.5 (0.33) 2.7 (0.11) 4.3 (0.17) 8.8 (0.35) 2.8 (0.11) 4.4 (0.17) 8.1 (3.19) 3.0 (1.18) 4.6 (1.81) 361K 8.5 (0.33) 2.7 (0.11) 4.3 (0.17) 8.6 (0.34) 2.8 (0.11) 4.4 (0.17) 8.9 (0.35) 2.9 (0.11) 4.5 (0.18) 8.3 (3.27) 3.1 (1.22) 4.9 (1.93) 391K 8.6 (0.34) 2.9 (0.11) 4.5 (0.18) 8.7 (0.34) 3.0 (0.12) 4.6 (0.18) 9.0 (0.35) 3.1 (0.12) 4.7 (0.19) 8.3 (3.27) 3.4 (1.34) 5.2 (2.05) 431K 8.7 (0.34) 3.0 (0.12) 4.7 (0.19) 8.8 (0.35) 3.2 (0.13) 4.8 (0.19) 9.2 (0.36) 3.3 (0.13) 4.9 (0.19) 8.5 (0.33) 3.7 (1.46) 5.4 (2.13) 471K 9.0 (0.35) 3.2 (0.13) 4.9 (0.19) 9.1 (0.36) 3.4 (0.13) 5.1 (0.20) 9.5 (0.37) 3.5 (0.14) 5.2 (0.20) 9.0 (3.54) 4.0 (1.57) 5.7 (2.24) 511K 9.4 (0.37) 3.4 (0.13) 5.2 (0.20) 9.5 (0.37) 3.6 (0.14) 5.4 (0.21) 9.9 (0.39) 3.7 (0.15) 5.5 (0.22) 9.4 (3.70) 4.3 (1.69) 6.0 (2.36) 561K 9.6 (0.38) 3.7 (0.15) 5.4 (0.21) 9.7 (0.38) 3.8 (0.15) 5.6 (0.22) 10.1 (0.40) 3.9 (0.15) 5.7 (0.22) 9.7 (0.38) 4.9 (1.93) 6.4 (2.52) 621K 10.0 (0.39) 3.9 (0.15) 5.7 (0.22) 10.1 (0.40) 4.1 (0.16) 5.9 (0.23) 10.4 (0.41) 4.2 (0.17) 6.0 (0.24) 9.7 (0.38) 5.1 (2.01) 6.6 (2.60) 681K 10.3 (0.41) 4.2 (0.17) 6.0 (0.24) 10.4 (0.41) 4.4 (0.17) 6.2 (0.24) 10.7 (0.42) 4.5 (0.18) 6.3 (0.25) 10.5 (0.41) 5.5 (2.17) 7.0 (2.76) 751K 10.4 (0.41) 4.5 (0.18) 6.4 (0.25) 10.7 (0.42) 4.7 (0.19) 6.6 (0.26) 11.1 (0.44) 4.8 (0.19) 6.7 (0.26) 10.5 (0.41) 5.7 (2.24) 7.2 (2.83) 781K 10.6 (0.42) 4.7 (0.19) 6.6 (0.26) 10.9 (0.43) 4.9 (0.19) 6.8 (0.27) 11.3 (0.44) 5.0 (0.20) 6.9 (0.27) 10.5 (0.41) 6.0 (2.36) 7.5 (2.95) 821K 10.8 (0.43) 4.9 (0.19) 6.8 (0.27) 11.0 (0.43) 5.1 (0.20) 7.0 (0.28) 11.4 (0.45) 5.2 (0.20) 7.1 (0.28) 11.5 (0.45) 6.2 (2.44) 8.0 (3.15) 911K 11.3 (0.44) 5.3 (0.21) 7.2 (0.28) 11.5 (0.45) 5.5 (0.22) 7.5 (0.30) 11.8 (0.46) 5.6 (0.22) 7.6 (0.30) 11.5 (0.45) 6.3 (2.48) 8.0 (3.15) 951K 11.5 (0.45) 6.6 (2.60) 8.1 (3.19) 102K 11.8 (0.46) 5.7 (0.22) 7.8 (0.31) 12.0 (0.47) 6.0 (0.24) 8.0 (0.31) 12.4 (0.49) 6.1 (0.24) 8.1 (0.32) 12.0 (0.47) 7.0 (2.76) 8.5 (3.35) 112K 12.0 (0.47) 6.3 (0.25) 8.3 (0.33) 12.2 (0.48) (0.26) 8.6 (0.34) 12.6 (0.50) 6.6 (0.26) 8.7 (0.34) 12.0 (0.47) 7.5 (2.95) 9.0 (3.54) (1) W1 and W2 is maximum dimension. (2) Unit: mm (inch) Remark : Bulk parts for 511K (320Vac) and above come standard with in-line crimped leads (see illustration to the right) for straight disk seating on PC boards. The suffix after part number automatically transfers to "L". Therefore, W1 and W2 dimensions are not applicable. If 511K (320Vac) and above are required with straight leads, please reference "How to order" and add "S" and reference W1 and W2 above. 22