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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 20MA 0603
- Series：POLY-FUSE®, 0603L
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：60V
- Current - Hold (Ih) (Max)：20 mA
- Current - Trip (It)：60 mA
- Current - Max：40 A
- Time to Trip：1 s
- Resistance - Initial (Ri) (Min)：12 Ohms
- Resistance - Post Trip (R1) (Max)：70 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0603 (1608 Metric), Concave
- Size / Dimension：0.063" L x 0.031" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.039" (1.00mm)
- Lead Spacing：-
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Overview
The Littelfuse Inc. 0603L002/60YR is a polymeric PTC resettable fuse designed for surface mount applications in the 0603 (1608 metric) package. It features a maximum voltage rating of 60 VDC and a hold current (Ih) of 20 mA. The device trips at a minimum current of 40 mA and offers a maximum trip current of 40 A. Initial resistance is specified at 70 Ohms, with an operating temperature range from -40°C to +85°C.
Feature Summary
- Provides overcurrent protection through polymer positive temperature coefficient technology
- Offers compact surface mount design suitable for space-constrained PCB layouts
- Capable of automatic reset after fault conditions are cleared
Applications
- Portable electronic devices requiring small form factor protection
- Consumer electronics circuits needing resettable overcurrent safeguards
- Communication equipment interfaces requiring compact circuit protection
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS compliance status and ensure the specific suffix matches required electrical parameters. Request original manufacturer documentation or authorized distributor certificates to validate supply chain integrity before integration into production systems.
Selection Notes
Select this component when system design requires a 60 VDC rated resettable fuse with a 20 mA hold current. Ensure the 0603 footprint aligns with existing PCB layout constraints. Verify that the 70 Ohm initial resistance meets signal integrity requirements and that the 40 A max current rating exceeds potential fault currents in the target application circuit.
Part Context
This part belongs to the 0603L series of PolySwitch resettable fuses from Littelfuse. The series is engineered for high-temperature solder compatibility and provides reliable protection in environments where traditional fuses are impractical due to size or reset requirements. It serves as a reusable alternative to single-use fusible links.
Replacement Considerations
Direct substitutes within the same series include variants with different current ratings such as 0603L004, 0603L008, or 0603L016, provided voltage and package dimensions remain compatible. Cross-brand replacements require careful verification of holding current, tripping characteristics, and physical footprint compatibility.
