POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series 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 • Low resistance and halogen-free • Low-profile • Fast response • Compatible with high • Compact design temperature solders Agency Approvals Applications • Plug and play protection • PCI cards AGENCY AGENCY FILE NUMBER for motherboards and • Game console port E183209 peripherals protection • USB peripherals R50119118 Electrical Characteristics I I V I P typ. Max. Time To Trip Resistance Agency Approvals Part Number Marking hold trip max max d (A) (A) (Vdc) (A) (W) Current Time R R min 1max (A) (Sec.) (Ω) (Ω) 1812L010 LF010 0.10 0.30 30 100 0.8 0.50 1.50 1.600 15.000 X X 1812L010/60 LF010-60 0.10 0.30 60 10 0.8 0.50 1.50 1.600 15.000 X X 1812L014 LF014 0.14 0.34 60 10 0.8 1.50 0.15 1.500 6.000 X X 1812L020 LF020 0.20 0.40 30 100 0.8 8.00 0.02 0.800 5.000 X X 1812L020/60 LF020-60 0.20 0.40 60 40 0.8 1.00 2.00 1.400 4.400 X X 1812L035/30 LF035-30 0.35 0.75 30 40 0.8 8.00 0.15 0.400 1.700 X X 1812L035/60 LF035-60 0.35 0.70 60 10 1.00 8.00 0.15 0.400 1.700 X X 1812L050 1 LF050 0.50 1.00 15 100 0.8 8.00 0.15 0.150 1.000 X X 1812L050/30 LF050-30 0.50 1.00 30 100 0.8 8.00 0.15 0.150 1.000 X X 1812L050/60 LF050-60 0.50 1.00 60 10 1.50 8.00 0.15 0.150 1.000 X X 1812L075 1 LF075 0.75 1.50 13.2 100 0.8 8.00 0.20 0.100 0.450 X X 1812L075/242 LF075-24 0.75 1.50 24 100 0.8 8.00 0.20 0.110 0.290 X X 1812L075/33 LF075-33 0.75 1.50 33 20 0.8 8.00 0.20 0.110 0.400 X X 1812L110 1 LF110 1.10 2.20 8 100 0.8 8.00 0.30 0.040 0.210 X X 1812L110/16 LF110-16 1.10 1.95 16 100 0.8 8.00 0.30 0.060 0.180 X X 1812L110/24 LF110-24 1.10 1.95 24 20 0.8 8.00 0.50 0.060 0.200 X X 1812L110/33 LF110-33 1.10 1.95 33 20 0.8 8.00 0.50 0.060 0.200 X X 1812L125/6 LF125-6 1.25 2.50 6 100 0.8 8.00 0.40 0.050 0.140 X X 1812L125/16 LF125 1.25 2.50 16 100 0.8 8.00 0.40 0.050 0.140 X X 1812L150 1 LF150 1.50 3.00 8 100 0.8 8.00 0.30 0.040 0.110 X X 1812L150/12 LF150-12 1.50 3.00 12 100 0.8 8.00 0.50 0.040 0.110 X X 1812L150/16 LF150-16 1.50 2.80 16 100 0.8 8.00 0.50 0.040 0.110 X X 1812L150/242 LF150-24 1.50 3.00 24 20 0.8 8.00 1.50 0.040 0.120 X X 1812L160 1 LF160 1.60 2.80 8 100 0.8 8.00 1.00 0.030 0.100 X X 1812L160/12 LF160-12 1.60 2.80 12 100 0.8 8.00 1.00 0.030 0.100 X X 1812L200TH 1 LF200 2.00 3.50 8 100 0.8 8.00 2.00 0.020 0.070 X X continues on next page. I = Hold current: maximum current device will pass without tripping in 20°C still air. R = Minimum resistance of device in initial (un-soldered) state. hold min I = Trip current: minimum current at which the device will trip in 20°C still air. R = Typical resistance of device in initial (un-soldered) state. trip typ V = Maximum voltage device can withstand without damage at rated current (I max) R = Maximum resistance of device at 20°C measured one hour after tripping or reflow I ma x= Maximum fault current device can withstand without damage at rated voltage (V ) 1max soldering of 260°C for 20 sec. max max P = Power dissipated from device when in the tripped state at 20°C still air. d 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. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series Electrical Characteristics I I V I P d Max. Time To Trip Resistance Agency Approvals Part Number Marking hold trip max max typ. Current Time R R (A) (A) (Vdc) (A) min 1max (W) (A) (Sec.) (Ω) (Ω) 1812L200/12 LF200-12 2.00 3.50 12 100 1.0 8.00 2.00 0.020 0.070 X X 1812L200/16 LF200-16 2.00 3.50 16 100 1.0 8.00 2.00 0.020 0.070 X X 1812L260TH 1 LF260 2.60 5.20 8 100 0.8 8.00 2.50 0.015 0.047 X X 1812L260/12 LF260-12 2.60 5.00 12 100 0.8 8.00 5.00 0.015 0.055 X X 1812L260/16 LF260-16 2.60 5.00 16 100 1.2 8.00 5.00 0.015 0.050 X X 1812L300 LF300 3.00 5.00 6 100 0.8 8.00 4.00 0.012 0.040 X X I = Hold current: maximum current device will pass without tripping in 20°C still air. R = Minimum resistance of device in initial (un-soldered) state. hold min I = Trip current: minimum current at which the device will trip in 20°C still air. R = Typical resistance of device in initial (un-soldered) state. trip typ V = Maximum voltage device can withstand without damage at rated current (I max) R = Maximum resistance of device at 20°C measured one hour after tripping or reflow I ma x= Maximum fault current device can withstand without damage at rated voltage (V ) 1max soldering of 260°C for 20 sec. max max P = Power dissipated from device when in the tripped state at 20°C still air. d 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. Temperature Rerating 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) 1812L010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.03 1812L010/60 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.03 1812L014 0.23 0.19 0.17 0.14 0.12 0.10 0.09 0.08 0.06 1812L020 0.29 0.26 0.23 0.20 0.17 0.15 0.14 0.12 0.10 1812L020/60 0.29 0.26 0.23 0.20 0.17 0.15 0.14 0.12 0.10 1812L035/30 0.50 0.45 0.40 0.35 0.30 0.26 0.24 0.20 0.16 1812L035/60 0.50 0.46 0.40 0.35 0.30 0.26 0.24 0.20 0.16 1812L050 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.29 1812L050/30 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.29 1812L050/60 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.29 1812L075 1.15 1.01 0.88 0.75 0.65 0.60 0.55 0.49 0.43 1812L075/24 1.06 0.95 0.84 0.75 0.60 0.55 0.50 0.45 0.37 1812L075/33 1.10 1.00 0.88 0.75 0.66 0.60 0.56 0.47 0.36 1812L110 1.59 1.43 1.26 1.10 0.95 0.87 0.80 0.71 0.60 1812L110/16 1.58 1.43 1.27 1.10 0.95 0.85 0.77 0.71 0.58 1812L110/24 1.55 1.40 1.25 1.10 0.93 0.83 0.73 0.63 0.50 1812L110/33 1.55 1.40 1.25 1.10 0.93 0.83 0.73 0.63 0.50 1812L125/6 2.00 1.75 1.52 1.25 1.00 0.95 0.90 0.75 0.53 1812L125/16 2.00 1.75 1.52 1.25 1.00 0.95 0.90 0.75 0.53 1812L150 2.06 1.93 1.79 1.50 1.28 1.10 1.02 0.80 0.68 1812L150/12 2.04 1.88 1.68 1.50 1.25 1.10 1.00 0.80 0.60 1812L150/16 2.04 1.88 1.68 1.50 1.25 1.10 1.00 0.80 0.60 1812L150/24 2.05 1.87 1.67 1.50 1.25 1.08 0.95 0.77 0.60 1812L160 2.20 2.06 1.91 1.60 1.36 1.17 1.09 0.85 0.72 1812L160/12 2.20 2.06 1.91 1.60 1.36 1.17 1.09 0.85 0.72 1812L200TH 2.60 2.44 2.22 2.00 1,78 1.67 1.50 1.45 1.29 1812L200/12 2.60 2.44 2.22 2.00 1.78 1.67 1.50 1.45 1.29 1812L200/16 2.60 2.44 2.22 2.00 1.78 1.67 1.50 1.45 1.29 1812L260TH 3.40 3.16 3.00 2.60 2.30 2.15 2.00 1.85 1.63 1812L260/12 3.40 3.16 3.00 2.60 2.30 2.15 2.00 1.85 1.63 1812L260/16 3.40 3.16 3.30 2.60 2.30 2.15 2.00 1.85 1.63 1812L300 4.13 3.75 3.30 3.00 2.62 2.43 2.25 2.00 1.78 Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series Temperature Rerating Curve Physical Specifications Solder-Plated Copper (Solder Material: Terminal Material 170% Matte Tin (Sn)) 150% Meets EIA Specification RS186-9E, ANSI/ Lead Solderability J-STD-002 Category 3. Percentage of Rated Current 111579300000%%%%% OMiEnpn aTerxvir.pi arDptoieennvdgmi c/SeSet atnSottueraarflga Sec eTpe Temecmipfi.pc.a t-1i4o20n5°°sCC to +85°C 30% +85°C, 1000 hours Passive Aging -/+5% typical resistance change 10% +85°C, 85% R.H.,1000 hours -40 -30 -20 -10 0 10 20 30 40 50 60 70 8085 Humidity Aging -/+5% typical resistance change Temperature (°C) MIL–STD–202, Method 107 Thermal Shock +85°C/-40°C 20 times Note: -30% typical resistance change Typical Temperature rerating curve, refer to table for derating data MIL–STD–202, Method 215, Solvent Resistance No change MIL–STD–883, Method 2007, Vibration Condition A, No change Moisture Level Sesitivity Level 1, J–STD–020 Soldering Parameters Profile Feature Pb-Free Assembly t P T Average Ramp-Up Rate (T to T) 3°C/second max P Critical Zone S(max) P RRaammpp--uupp tL to tP Temperature Min (T ) 150°C s(min) T L t Pre Heat: Temperature Max (Ts(max)) 200°C TS(max) L Time (Min to Max) (ts) 60 – 180 secs eru RRaammpp--ddoown Time Maintained Temperature (TL) 217°C tar T PPrreehheeaatt e S(min) Above: Temperature (tL) 60 – 150 seconds pm tS e Peak / Classification Temperature (T) 260+0/-5 °C T P 25 Time within 5°C of actual peak 20 – 40 seconds time to peak temperature Time Temperature (t) p Ramp-down Rate 6°C/second max -- 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 Time 25°C to peak Temperature (T) 8 minutes Max. P performance requirements -- Recommended reflow methods: IR, vapor phase oven, hot air oven, N environment 2 for lead -- Recommended maximum paste thickness is 0.25mm (0.010 inch) -- Devices can be cleaned using standard industry methods and solvents -- Devices can be reworked using the standard industry practices © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series Average Time Current Curves V V 2 2 0A5A0A0A/16V5A/6V5A/16V0A0A/12V0A0A0A0A, 2.60A/15A0A/16V0A0A0A/16V5A/6V5A/16V0A0A/12V0A0A0A, 2.60A/10A/16V0A 0/60 0 0/60 4 0 5/30 5/60 0/30 0/60 0/60 5/33 0 5/24 0/60 0/33 4 0/24 0 0/24 5/30 0/125/60 0/30 0/60 5/33 5/24 0/33 0/24 0/24 0/12 57112255605676101225560660 112123355171721112530355771150 0.0.1.1.1.1.1.1.1.2.0.2.0.2.1.3.1.1.1.1.1.1.2.2.2.3. 0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.1.0.2.0.0.0.0.0.1.1.1.2. 1812L 1812L 1812L 1812L 100 100 100 100 10 10 10 10 s s s s d d d d n n n n o o o o c c c c e e e e S S S S n n n 1 n 1 e i e i e i e i m m m m Ti Ti Ti Ti 0.1 0.1 0.1 0.1 0.01 0.01 0.01 0.01 0.1 1 0.1 10 1 100 10 100 0.1 1 0.1 10 1 100 10 100 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 SSaammpplleess © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series 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 110 110 Side View B -33 View 3.45 mm Bottom 110 Pad (.135”) 3.15 mm View Layout (.124”) D E 1.78mm (.070”) A B C D E Part Inches mm Inches mm Inches mm Inches mm Inches mm Number Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max 1812L010 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L010/60 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L014 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.08 0.75 1.95 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L020 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.04 0.55 1.00 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L020/60 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.20 0.01 0.03 0.15 0.65 1812L035/30 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.04 0.6 1.25 0.01 0.05 0.3 1.20 0.01 0.03 0.15 0.65 1812L035/60 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.05 0.07 1.2 1.8 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L050 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.5 0.75 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.50 1812L050/30 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.04 0.5 1.00 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L050/60 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.05 0.07 1.2 1.8 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L075 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.5 0.75 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.50 1812L075/24 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.20 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L075/33 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.06 0.75 1.55 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L110 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.50 0.71 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.65 1812L110/24 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.04 0.50 1.07 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L110/16 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L110/33 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.05 0.08 1.20 2.00 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L125/6 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.45 0.75 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L125/16 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.65 1812L150 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.30 0.71 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L150/12 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L150/16 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L150/24 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.07 0.80 1.8 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L160 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.40 0.75 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L160/12 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.75 1.25 0.01 0.05 0.3 1.2 1.2 0.01 0.15 0.65 1812L200TH 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.008 0.024 0.20 0.6 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.65 1812L200/12 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.80 1.20 0.012 0.047 0.3 1.2 0.01 0.026 0.15 0.65 1812L200/16 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.80 1.20 0.012 0.047 0.3 1.2 0.01 0.026 0.15 0.65 1812L260TH 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.04 0.50 1.00 0.01 0.05 0.3 1.2 0.01 0.02 0.15 0.65 1812L260/12 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.05 0.80 1.34 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 1812L260/16 0.18 0.19 4.54 4.90 0.12 0.14 3.16 3.50 0.05 0.08 1.20 2.00 0.012 0.047 0.3 1.2 0.006 0.03 0.15 0.65 1812L300 0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.06 0.50 1.50 0.01 0.05 0.3 1.2 0.01 0.03 0.15 0.65 © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series Part Ordering Number System 1812 L 380 /12 TH Y R- A -A: Automotive grade Blank: Standard version SERIES PACKAGING STYLE R: Tape & Reel QUANTITY CODE: K=10,000 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 CURRENT CODE HOLD (Refer to Electrical Characteristics Table) L: LITTELFUSE SURFACE MOUNT PPTC SIZE Packaging Voltage Packaging Quantity & Part Number Ordering Number Halogen Free I (A) I Code Quantity hold hold Option Option Packaging Code 1812L010 1812L010DR Yes 0.10 010 1500 DR 1812L010/60 1812L010/60DR Yes 0.10 010 /60 1500 DR 1812L014 1812L014DR Yes 0.14 014 1500 DR 1812L020 1812L020PR Yes 0.20 020 2000 PR 1812L020/60 1812L020/60DR Yes 0.20 020 /60 1500 DR 1812L035/30 1812L035/30DR Yes 0.35 035 /30 1500 DR 1812L035/60 1812L035/60 Yes 0.35 035 /60 1000 MR 1812L050 1812L050PR Yes 0.50 050 2000 PR 1812L050/30 1812L050/30PR Yes 0.50 050 /30 2000 PR 1812L050/60 1812L050/60 Yes 0.50 050 /60 1000 MR 1812L075 1812L075PR Yes 0.75 075 2000 PR 1812L75/24 1812L075/24DR Yes 0.75 075 /24 1500 DR 1812L75/33 1812L075/33DR Yes 0.75 075 /33 1500 DR 1812L110 1812L110PR Yes 1.10 110 2000 PR 1812L110/16 1812L110/16DR Yes 1.10 110 /16 1500 DR 1812L110/24 1812L110/24DR Yes 1.10 1.10 /24 1500 DR Tape and Reel 1812L110/33 1812L110/33MR Yes 1.10 110 /33 1000 MR 1812L125/6 1812L125/6PR Yes 1.25 125 /6 2000 PR 1812L125/16 1812L125/16DR Yes 1.25 125 /16 1500 DR 1812L150 1812L150ZR Yes 1.50 150 2000 ZR 1812L150/12 1812L150/12DR Yes 1.50 150 /12 1500 DR 1812L150/16 1812L150/16DR Yes 1.50 150 /16 1500 DR 1812L150/24 1812L150/24MR Yes 1.50 150 /24 1000 MR 1812L160 1812L160PR Yes 1.60 160 2000 PR 1812L160/12 1812L160/12DR Yes 1.60 160 /12 1500 DR 1812L200TH 1812L200THPR Yes 2.00 200 2000 PR 1812L200/12 1812L200/12DR Yes 2.00 200 /12 1500 DR 1812L200/16 1812L200/16DR Yes 2.00 200 1500 DR 1812L260TH 1812L260THDR Yes 2.60 260 1500 DR 1812L260/12 1812L260/12MR Yes 2.60 260 /12 1000 MR 1812L260/16 1812L260/16MR Yes 2.60 260 1000 MR 1812L300 1812L300MR Yes 3.00 300 1000 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. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19

POLY-FUSE® Resettable PTCs Surface Mount > 1812L Series Tape and Reel Specifications TAPE SPECIFICATIONS: EIA-481-1 (mm) 1812L020 1812L010 1812L035/60 1812L050/30 1812L010/60 1812L050/60 1812L050 1812L014 1812L110/33 1812L075 1812L020/60 1812L150/24 1812L110 1812L035/30 1812L260/12 1812L125/6 1812L075/24 1812L260/16 1812L150 1812L075/33 1812L300 REEL DIMENSIONS: 1812L160 1812L110/16 EIA-481-1 (mm) 1812L200 1812L110/24 1812L125/16 1812L150/12 1812L150/16 1812L160/12 1812L200/12 1812L200/16 1812L260 W 12.00 ± 0.30 12.00 ± 0.30 12.00 ± 0.30 C Ø178 ± 1.0 F 5.50 ± 0.05 5.50 ± 0.05 5.50 ± 0.05 D Ø60.2 ± 0.5 E 1.75 ± 0.10 1.75 ± 0.10 1.75 ± 0.10 H 16.0 ± 0.5 1 D 1.55 ± 0.10 1.55+/- 0.05 1.55 ± 0.05 W 13.2 ± 1.5 0 D 1.55 (min) 1.50+/- 0.10 1.50 (MIN) 1 P 4.00 ± 0.10 4.00 ± 0.10 4.00 ± 0.08 0 P 8.00 ± 0.10 8.00 ± 0.10 8.00 ± 0.10 1 P 2.00 ± 0.05 2.00 ± 0.05 2.00 ± 0.05 2 A 3.58 ± 0.10 3.50 ± 0.10 3.58 ± 0.10 0 B 4.93 ± 0.10 4.85± 0.10 4.93 ± 0.10 0 T 0.25 ± 0.10 0.25 ± 0.10 0.25 ± 0.10 K 0.87± 0.06 1.25 ± 0.10 2.10 ± 0.10 0 Leader min. 390 390 390 Trailer min. 160 160 160 Tape and Reel Diagram H D P1 P0 0 P2 E1 D C F W T D 1 W D1 K0 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 www.littelfuse.com/disclaimer-electronics. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/25/19