Surface Mount > 1812L Series. Description. Features. Applications. I max (A) typ. (W) P d. Current (A)

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1 1812L Series RoHS Description The 1812L Series PTC provides surface mount overcurrent protection for applications where resettable protection is desired. Features RoHS compliant, lead-free and halogen-free Fast response Compact design Low resistance Low-profile Compatible with high temperature solders Agency Approvals Applications AGENCY AGENCY FILE NUMBER E R Plug and play protection for motherboards and peripherals USB peripherals PCI cards Game console port protection Electrical Characteristics Part Number Marking (A (A (Vdc I max (A typ. (W Max. Time To Trip Resistance Agency Approvals 1812L0 LF X X 1812L0/60 LF X X 1812L014 LF X X 1812L020 LF X X 1812L020/60 LF X X 1812L035/30 LF X X 1812L035/60 LF X X 1812L050 1 LF X X 1812L050/30 LF X X 1812L050/60 LF X X 1812L075 1 LF X X 1812L075/24 2 LF X X 1812L075/33 LF X X 1812L1 1 LF X X 1812L1/16 LF X X 1812L1/24 LF X X 1812L1/33 LF X X 1812L125/6 LF X X 1812L125/16 LF X X 1812L150 1 LF X X 1812L150/12 LF X X 1812L150/16 LF X X 1812L150/24 2 LF X X 1812L160 1 LF X X 1812L160/12 LF X X 1812L200TH 1 LF X X continues on next page. = Hold current: maximum current device will pass without tripping in 20 C still air. = Trip current: minimum current at which the device will trip in 20 C still air. = Maximum voltage device can withstand without damage at rated current (I max I max = Maximum fault current device can withstand without damage at rated voltage ( = Power dissipated from device when in the tripped state at 20 C still air. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. 1 Some older references to these devices may include C in the Part Number. The C should be omitted when placing new orders for the device. 2 Part Number with note 2 tested and complied with AEC Q200. Current (A Time (Sec. R min (Ω (Ω R min = Minimum resistance of device in initial (un-soldered state. R typ = Typical resistance of device in initial (un-soldered state. = Maximum resistance of device at 20 C measured one hour after tripping or reflow soldering of 260 C for 20 sec.

2 Electrical Characteristics Part Number Marking I Max. Time To Trip Resistance Agency Approvals max typ. Current Time R (A (A (Vdc (A min (W (A (Sec. (Ω (Ω 1812L200/12 LF X X 1812L200/16 LF X X 1812L260TH 1 LF X X 1812L260/12 LF X X 1812L260/16 LF X X 1812L300 LF X X = Hold current: maximum current device will pass without tripping in 20 C still air. = Trip current: minimum current at which the device will trip in 20 C still air. = Maximum voltage device can withstand without damage at rated current (I max I max = Maximum fault current device can withstand without damage at rated voltage ( = Power dissipated from device when in the tripped state at 20 C still air. Temperature Rerating R min = Minimum resistance of device in initial (un-soldered state. R typ = Typical resistance of device in initial (un-soldered state. = Maximum resistance of device at 20 C measured one hour after tripping or reflow soldering of 260 C for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. 1 Some older references to these devices may include C in the Part Number. The C should be omitted when placing new orders for the device. 2 Part Number with note 2 tested and complied with AEC Q200. Ambient Operation Temperature -40 C -20 C 0 C 20 C 40 C 50 C 60 C 70 C 85 C Part Number Hold Current (A 1812L L0/ L L L020/ L035/ L035/ L L050/ L050/ L L075/ L075/ L L1/ L1/ L1/ L125/ L125/ L L150/ L150/ L150/ L L160/ L200TH , L200/ L200/ L260TH L260/ L260/ L Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.

3 Temperature POLY-FUSE Resettable PTCs Temperature Rerating Curve Percentage of Rated Current 170% 150% 130% 1% 90% 70% 50% 30% % Temperature ( C Note: Typical Temperature rerating curve, refer to table for derating data Physical Specifications Terminal Material Lead Solderability Environmental Specifications Operating/Storage Temp. Max. Device Surface Temp. in Tripped State Passive Aging Humidity Aging Thermal Shock Solvent Resistance Vibration Moisture Level Sesitivity Solder-Plated Copper (Solder Material: Matte Tin (Sn Meets EIA Specification RS186-9E, ANSI/ J-STD-002 Category C to +85 C 125 C +85 C, 0 hours -/+5% typical resistance change +85 C, 85% R.H.,0 hours -/+5% typical resistance change MIL STD 202, Method C/-40 C 20 times -30% typical resistance change MIL STD 202, Method 215, No change MIL STD 883, Method 2007, Condition A, No change Level 1, J STD 020 Soldering Parameters Profile Feature Average Ramp-Up Rate (T S(max to T P Pb-Free Assembly 3 C/second max Temperature Min (T s(min 150 C Pre Heat: Temperature Max (T s(max 200 C Time (Min to Max (t s secs Time Maintained Temperature (T L 217 C Above: Temperature (t L seconds Peak / Classification Temperature (T P /-5 C Time within 5 C of actual peak Temperature (t p Ramp-down Rate Time 25 C to peak Temperature (T P seconds 6 C/second max 8 minutes Max. T P T L T S(max T S(min 25 t S Preheat time to peak temperature Ramp-up t P t L Ramp-down Time Critical Zone t L to t P -- All temperature refer to topside of the package, measured on the package body surface -- If reflow temperature exceeds the recommended profile, devices may not meet the performance requirements -- Recommended reflow methods: IR, vapor phase oven, hot air oven, N 2 environment for lead -- Recommended maximum paste thickness is 0.25mm (0.0 inch -- Devices can be cleaned using standard industry methods and solvents -- Devices can be reworked using the standard industry practices

4 Average Time Current Curves 0.50A 0.75A 1.A 1.A/16V 1.25A/6V 1.25A/16V 1.50A 1.50A/12V 1.60A 2.00A 0.50A 2.60A, 0.75A 2.60A/12V 1.A 2.60A/16V 3.00A 1.A/16V 1.25A/6V 1.25A/16V 1.50A 1.50A/12V 1.60A 2.00A 2.60A, 2.60A/12V 2.60A/16V 3.00A 0/ / / / / /60 0/ / / /60 1./ / / / / / / / / /24 1./33 1./ / / L 1812L 1812L Current in Amperes Current in Amperes Current in Amperes Current in Amperes The average time current curves and Temperature Rerating curve performance is affected by a number or variables, and these curves provided as guidance only. Customer must verify the performance in their application. Additional Information Datasheet Resources Samples

5 Dimensions MARKING CODE VARIES WITH AMPERAGE AND VOLTAGE RATING (See Electrical Characteristics Table SHOWN ARE: - 1.1A/6V RATING (LEFT - 1.1A/33V RATING (RIGHT A C Top View 1 B 1-33 Side View Bottom View 1 Pad Layout 3.45 mm ( mm (.124 D E 1.78mm (.070 Part Number A B C D E Inches mm Inches mm Inches mm Inches mm Inches mm Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max 1812L L0/ L L L020/ L035/ L035/ L L050/ L050/ L L075/ L075/ L L1/ L1/ L1/ L125/ L125/ L L150/ L150/ L150/ L L160/ L200TH L200/ L200/ L260TH L260/ L260/ L

6 Part Ordering Number System 1812 L 380 /12 TH Y R - A SERIES -A: Automotive grade Blank: Standard version PACKAGING STYLE R: Tape & Reel QUANTITY CODE: K=,000 Y=4,000 W=3,000 P=2,000 THIN PROFILE (Not applicable to all parts /XX: SPECIAL VOLTAGE RATING (Not applicable to all parts. Refer to Electrical Characteristics Table I HOLD HOLD CURRENT CODE (Refer to Electrical Characteristics Table L: LITTELFUSE SURFACE MOUNT PPTC SIZE Packaging Part Number Ordering Number Halogen Free I (A I Code Voltage Packaging Quantity & Quantity hold hold Option Option Packaging Code 1812L0 1812L0DR Yes DR 1812L0/ L0/60DR Yes 0 0 / DR 1812L L014DR Yes DR 1812L L020PR Yes PR 1812L020/ L020/60DR Yes / DR 1812L035/ L035/30DR Yes / DR 1812L035/ L035/60 Yes /60 0 MR 1812L L050PR Yes PR 1812L050/ L050/30PR Yes / PR 1812L050/ L050/60 Yes /60 0 MR 1812L L075PR Yes PR 1812L75/ L075/24DR Yes / DR 1812L75/ L075/33DR Yes / DR 1812L1 1812L1PR Yes PR 1812L1/ L1/16DR Yes 1. 1 / DR 1812L1/ L1/24DR Yes / DR Tape and Reel 1812L1/ L1/33MR Yes 1. 1 /33 0 MR 1812L125/6 1812L125/6PR Yes / PR 1812L125/ L125/16DR Yes / DR 1812L L150ZR Yes ZR 1812L150/ L150/12DR Yes / DR 1812L150/ L150/16DR Yes / DR 1812L150/ L150/24MR Yes /24 0 MR 1812L L160PR Yes PR 1812L160/ L160/12DR Yes / DR 1812L200TH 1812L200THPR Yes PR 1812L200/ L200/12DR Yes / DR 1812L200/ L200/16DR Yes DR 1812L260TH 1812L260THDR Yes DR 1812L260/ L260/12MR Yes /12 0 MR 1812L260/ L260/16MR Yes MR 1812L L300MR Yes MR WARNING Users shall independently assess the suitability of these devices for each of their applications Operation of these devices beyond the stated maximum ratings could result in damage to the devices and lead to electrical arcing and/or fire These devices are intended to protect against the effects of temporary over-current or over-temperature conditions and are not intended to perform as protective devices where such conditions are expected to be repetitive or prolonged in duration Exposure to silicon-based oils, solvents, electrolytes, acids, and similar materials can adversely affect the performance of these PPTC devices These devices undergo thermal expansion under fault conditions, and thus shall be provided with adequate space and be protected against mechanical stresses Circuits with inductance may generate a voltage (L di/dt above the rated voltage of the PPTC device.

7 Tape and Reel Specifications TAPE SPECIFICATIONS: EIA (mm 1812L L035/ L L L1 1812L125/6 1812L L L L0 1812L0/ L L020/ L050/ L075/ L075/ L1/ L1/ L125/ L150/ L150/ L160/ L200/ L200/ L L035/ L050/ L1/ L150/ L260/ L260/ L300 REEL DIMENSIONS: EIA (mm W ± ± ± 0.30 C Ø178 ± 1.0 F 5.50 ± ± ± 0.05 D Ø60.2 ± 0.5 E ± ± ± 0 H 16.0 ± 0.5 D ± / ± 0.05 W 13.2 ± 1.5 D (min 1.50+/ (MIN P ± ± ± 0.08 P ± ± ± 0 P ± ± ± 0.05 A ± ± ± 0 B ± ± ± 0 T 0.25 ± ± ± 0 K ± ± 0 2. ± 0 Leader min Trailer min Tape and Reel Diagram H P 1 P 0 D 0 P2 E 1 F D C W T D 1 W D 1 K 0 B0 Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at