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0603L004YR
Resettable Fuse, PPTC, 0603 (1608 Metric), PolySwitch 0603L Series, 24 VDC, 40 mA, 120 mA, 1 s
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- Manufacturer: LITTELFUSE
- Product type: Surface Mount PPTCs
- Thermistor Mounting:SMD; Product Range:POLYFUSE 0603L Series; Holding Current:40mA; Tripping Current:120mA; Voltage Rating:24VDC; Operating Temperature Min:-40°C; Operating Temper
- SVHC: To Be Advised
- Time to Trip: 1s
- Trip Current: 120mA
- Product Range: PolySwitch 0603L Series
- Voltage Rating: 24VDC
- Holding Current: 40mA
- PPTC Case Style: 0603 (1608 Metric)
- Current Rating Max: 20A
- Thermistor Mounting: SMD
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 4000 |
| Price | 0.865 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
PolySwitch[®] Resettable PPTC **Datasheet** **0603L Series** Surface Mount ## [_]@ **RoHS** ## **Description** The 0603L Series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired. ## **Features** - RoHS compliant, lead-free ■ Low resistance and halogen free - Low-profile - Fast response to fault currents - Compatible with high temperature solders - Compact design saves board space ## **Additional Information** **==> picture [206 x 63] intentionally omitted <==** **----- Start of picture text -----**<br> 8] | ey“es &G<br>Resources Accessories Samples<br>**----- End of picture text -----**<br> ## **Applications** - USB peripherals - Disk drives - CD-ROMs - Plug and play protection for motherboards and peripherals - PDAs / digital cameras - Game console port protection ## **Agency Approvals** |**Agency**|**Agency File Number**| |---|---| ||E183209| ||R50119118| ## **Electrical Characteristics** |**Part Number**<br>0603L001/60|**Marking**<br>●|**Ihold**<br>**(A)**<br>0.01|**Itrip**<br>**(A)**<br>0.05|**Vmax**<br>**(Vdc)**<br>60|**Imax**<br>**(A)**<br>40|**Pd**<br>**typ.**<br>**(W)**<br>0.5|**Maximum Time To Trip**|**Maximum Time To Trip**|**Resistance**|**Resistance**|**Agency Approvals**|**Agency Approvals**| |---|---|---|---|---|---|---|---|---|---|---|---|---| ||||||||**Current**<br>**(A)**<br>0.20|**Time**<br>**(Sec.)**<br>1.00|**Rmin**<br>**(Ω)**<br>15.00|**R1max**<br>**(Ω)**<br>100.00|X|X| |0603L002/60|2|0.02|0.06|60|40|0.5|0.20|1.00|12.00|70.00|X|X| |0603L003/36|▲|0.03|0.09|36|40|0.5|0.20|1.00|6.00|50.00|X|X| |0603L004|-|0.04|0.12|24|20|0.5|0.20|1.00|4.00|40.00|X|X| |0603L010|C|0.10|0.30|15|40|0.5|0.50|1.00|0.900|6.000|X|X| |0603L020|H|0.20|0.50|9|40|0.5|1.00|0.60|0.550|3.500|X|X| |0603L025|I|0.25|0.55|9|40|0.5|8.00|0.08|0.500|3.000|X|X| |0603L035|F|0.35|0.75|6|40|0.5|8.00|0.10|0.200|1.000|X|X| |0603L050|J|0.50|1.00|6|40|0.5|8.00|0.10|0.100|0.680|X|X| I hold = Hold current: maximum current device will pass without tripping in 20°C still air. I trip = Trip current: minimum current at which the device will trip in 20°C still air. - V max = 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 (Vmax) P d = Power dissipated from device when in the tripped state at 20°C still air. R min = Minimum resistance of device in initial (un-soldered) state. - R 1max = 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. ## **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. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/29/21 **1** PolySwitch[®] Resettable PPTC **Datasheet** **0603L Series** Surface Mount ## **Temperature Rerating** |**Part Number**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**|-40°C<br>-20°C<br>0°C<br>20°C<br>40°C<br>50°C<br>60°C<br>70°C<br>85°C<br>**Hold Current (A)**| |---|---|---|---|---|---|---|---|---|---| |0603L001/60|0.0156|0.0138|0.0121|0.010|0.0085|0.0076|0.0067|0.0058|0.0045| |0603L002/60|0.0299|0.0268|0.0236|0.020|0.0173|0.0157|0.0142|0.0126|0.0102| |0603L003/36|0.0454|0.0405|0.0356|0.030|0.0258|0.0234|0.0209|0.0185|0.0148| |0603L004|0.052|0.048|0.044|0.040|0.032|0.028|0.024|0.020|0.012| |0603L010|0.13|0.12|0.11|0.10|0.08|0.07|0.06|0.05|0.03| |0603L020|0.27|0.25|0.23|0.20|0.17|0.14|0.12|0.10|0.07| |0603L025|0.32|0.29|0.27|0.25|0.21|0.18|0.16|0.14|0.10| |0603L035|0.47|0.41|0.38|0.35|0.29|0.26|0.24|0.20|0.14| |0603L050|0.67|0.59|0.54|0.50|0.41|0.37|0.34|0.29|0.20| ## **Average Time Current Curves** ## **Temperature Rerating Curve** **==> picture [483 x 295] intentionally omitted <==** **----- Start of picture text -----**<br> 170%<br>150%<br>Pitt tty | yt Tt<br>100 MY 130% PAT<br>110%<br>PTPSAEE<br>90% PT Tt rNTEEE<br>70%<br>PTT TT PPPAT<br>10<br>50% PT TET<br>30% PTEETEE EE<br>10% PTTETT<br>1 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80<br>Temperature (°C)<br>Note:<br>0,1 Typical Temperature rerating curve, refer to table for derating data<br>0,01<br>0,01 0,1 1 10<br>Fault Current (Amp.)<br>The average time current curves and Temperature Rerating curve performance is affected by a number<br>or variables, and these curves provided as guidance only. Customer must verify the performance in their<br>application.<br>0.01A/60V 0.02A/60V 0.03A/36V 0.04A 0.10A 0.20A 0.25A 0.35A 0.50A<br>Percentage of Rated Current<br>Time to Trip (Sec.)<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/29/21 **2** PolySwitch[®] Resettable PPTC **Datasheet** **0603L Series** Surface Mount ## **Soldering Parameters** **==> picture [488 x 153] intentionally omitted <==** **----- Start of picture text -----**<br> ||||||||||||| |---|---|---|---|---|---|---|---|---|---|---|---| |Profile Feature|Pb-Free Assembly| |t|P| |Average Ramp-Up Rate (TS(max) to TP)|3°C/second max|T|P|Critical Zone| |Temperature Min (Ts(min))|150°C|Ramp-up|t|L|to t|P| |Pre Heat:|Temperature Max (Ts(max))|200°C|T|S(max)|T|L|t|L| |Time (Min to Max) (ts)|60 – 180 secs|Ramp-down| |Time Maintained|Temperature (TL)|217°C|Preheat| |||d|||—| |Above:|Temperature (tL)|60 – 150 seconds|T|S(min)|>|t|=|S||)|||\| |Peak / Classification Temperature (TP)|260|[+0/-5]|°C| |Time within 5°C of actual peak Temperature (tp)|20 – 40 seconds|25|.|time to peak temperatur|e|—|Time| |Ramp-down Rate|6°C/second max| |Time 25°C to peak Temperature (TP)|8 minutes Max.| **----- End of picture text -----**<br> - -- 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, N2 environment 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 ## **Physical Specifications** ## **Environmental Specifications** Solder-Plated Copper **Terminal Material** (Solder Material: Matte Tin (Sn)) Meets EIA Specification RS186-9E, **Lead Solderability** ANSI/J-STD-002, Category 3. **==> picture [235 x 158] intentionally omitted <==** **----- Start of picture text -----**<br> ||||| |---|---|---|---| |Operating/Storage Temperature|-40°C to +85°C| |Maximum Device Surface| |125°C| |Temperature in Tripped State| |+85°C, 1000 hours| |Passive Aging|-/+10%|typical resistance|change| |+85°C, 85% R.H.,100 hours| |Humidity Aging|-/+15%|typical resistance|change| |MIL–STD–202, Method 107| |Thermal Shock|+85°C/-40°C 20 times| |-30%|typical resistance|change| |MIL–STD–202, Method 215| |Solvent Resistance| |No|change| |MIL–STD–883, Method 2007,| |Vibration|Condition A| |No|change| |Moisture Sensitivity Level|Level 1, J–STD–020| **----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/29/21 **3** PolySwitch[®] Resettable PPTC **Datasheet** ## **0603L Series** Surface Mount ee **Dimensions** **==> picture [496 x 275] intentionally omitted <==** **----- Start of picture text -----**<br> |||||||||||||||||||||| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| |A|C| |Solder Pad Layout| |Top|B|Side|0.8mm| |View|View|(.032”)| |Pad|1mm| |Layout|(.039”)| |Marking code varies with| |Bottom|ME|amperage rating -- SeeElectrical Characteristics table|pg| |View|1mm|1mm| |(.039”)|(.039”)| |D|E| |A|B|C|D|E| |Part| |Inch|mm|Inch|mm|Inch|mm|Inch|mm|Inch|mm| |Number| |Min|Max|Min|Max|Min|Max|Min|Max|Min|Max|Min|Max|Min|Max|Min|Max|Min|Max|Min|Max| |0603L001/60|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.039|0.40|1.00|.006|.020|0.15|0.50|-|.016|-|0.40| |0603L002/60|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.039|0.40|1.00|.006|.020|0.15|0.50|-|.016|-|0.40| |0603L003/36|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.039|0.40|1.00|.006|.020|0.15|0.50|-|.016|-|0.40| |0603L004|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.030|0.40|0.75|.006|.020|0.15|0.50|.004|.016|0.10|0.40| |0603L010|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.030|0.40|0.75|.006|.020|0.15|0.50|.004|.016|0.10|0.40| |0603L020|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.030|0.40|0.75|.006|.020|0.15|0.50|.004|.016|0.10|0.40| |0603L025|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.016|.030|0.40|0.75|.006|.020|0.15|0.50|.004|.016|0.10|0.40| |0603L035|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.030|.061|0.75|1.55|.006|.020|0.15|0.50|.004|.016|0.10|0.40| |0603L050|.055|.071|1.40|1.80|.024|.039|0.60|1.00|.030|.061|0.75|1.55|.006|.020|0.15|0.50|.004|.016|0.10|0.40| **----- End of picture text -----**<br> ## **Part Ordering Number System** **==> picture [226 x 132] intentionally omitted <==** **----- Start of picture text -----**<br> 0603 L xxx Y R - A<br>-A: Automotive grade<br>Blank: Standard version<br>PACKAGING STYLE<br>SERIES R: Tape & Reel<br>QUANTITY CODE<br>Y: 4000<br>I HOLD HOLD CURRENT CODE<br> (Refer to Electrical Characteristics Table)<br>L: LITTELFUSE SURFACE MOUNT PPTC<br>i e DEVICE SIZE CODE (0.06 x 0.03 inch)<br>**----- End of picture text -----**<br> ## **Packaging** **==> picture [488 x 127] intentionally omitted <==** **----- Start of picture text -----**<br> ||||||||| |---|---|---|---|---|---|---|---| |Part Number|Ordering Number|Halogen Free|I hold (A)|I hold Code|Packaging Option|Quantity|Quantity & Packaging Codes| |0603L001/60|0603L001/60YR|Yes|0.01|001|Tape and Reel|4000|YR| |0603L002/60|0603L002/60YR|Yes|0.02|002|Tape and Reel|4000|YR| |0603L003/36|0603L003/36YR|Yes|0.03|003|Tape and Reel|4000|YR| |0603L004|0603L004YR|Yes|0.04|004|Tape and Reel|4000|YR| |0603L010|0603L010YR|Yes|0.10|010|Tape and Reel|4000|YR| |0603L020|0603L020YR|Yes|0.20|020|Tape and Reel|4000|YR| |0603L025|0603L025YR|Yes|0.25|025|Tape and Reel|4000|YR| |0603L035|0603L035YR|Yes|0.35|035|Tape and Reel|4000|YR| |0603L050|0603L050YR|Yes|0.50|050|Tape and Reel|4000|YR| **----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. ~~©. |~~ Revised: GD.10/29/21 **4** PolySwitch[®] Resettable PPTC **Datasheet** **0603L Series** Surface Mount ## **Tape and Reel Specifications** |**TAPE SPECIFICATIONS: EIA-481-1 (mm)**|**TAPE SPECIFICATIONS: EIA-481-1 (mm)**|| |---|---|---| |**W**|**0603L004**<br>**0603L010**<br>**0603L020**<br>**0603L025**<br>8.0+/- 0.30|| |**F**|3.5+/- 0.05|| |**E1**|1.75+/- 0.10|| |**D0**|1.55+/- 0.05|| |**T**|0.20+/- 0.10|| |**K0**|0.72+/- 0.10|| |**Leader min.**|390|| |**Trailer min.**|160|| ## **Tape and Reel Diagram** **==> picture [407 x 181] intentionally omitted <==** **----- Start of picture text -----**<br> H<br>-<br>Tape Specifications Reel Specifications<br>P1 P0 D0 P2 E1<br>F<br>josey W ED Ib<br>el] lel Wel late, WY<br>T D1 W<br>a a a e<br>A0 K0 B0<br>a kU<br>**----- End of picture text -----**<br> **==> picture [20 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> D C<br>**----- End of picture text -----**<br> **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. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/29/21 **5**
Updated at April 12, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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