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RTEF135-2 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 33V 1.35A RADIAL. Review the specifications below when checking this part for your BOM.
Ptc Resettable Fuses specifications for RTEF135-2
- Description：PTC RESET FUSE 33V 1.35A RADIAL
- Series：PolySwitch®
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：33V
- Current - Hold (Ih) (Max)：1.35 A
- Current - Trip (It)：2.5 A
- Current - Max：40 A
- Time to Trip：4.5 s
- Resistance - Initial (Ri) (Min)：59 mOhms
- Resistance - Post Trip (R1) (Max)：143 mOhms
- Operating Temperature：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.291" L x 0.118" W (7.40mm x 3.00mm)
- Height - Seated (Max)：0.559" (14.20mm)
- Thickness (Max)：-
- Lead Spacing：0.199" (5.05mm)
Ptc Resettable Fuses datasheet and documents for RTEF135-2
Ptc Resettable Fuses Overview
The Littelfuse RTEF135-2 is a polymeric PTC resettable fuse designed for overcurrent protection in electronic circuits. It features a maximum voltage rating of 33V and a hold current (Ih) of 1.35A, with a trip current (It) of 2.5A. The device has a maximum fault current rating of 40A and an initial resistance (Ri) of 84 mOhms. It operates within a temperature range of -40°C to 85°C and utilizes a radial through-hole package with a lead spacing of 5.05mm.
Ptc Resettable Fuses Feature Summary
- Polymeric construction enables automatic reset functionality after fault clearance
- Radial through-hole mounting facilitates standard PCB integration
- Certified by UL, CSA, TÜV, and CQC agencies for global compliance
Ptc Resettable Fuses Applications
- Portable electronics circuit protection
- Consumer appliance power input stages
- Battery pack overcurrent safeguarding
Ptc Resettable Fuses Procurement Notes
Verify the specific part number suffix against official Littelfuse documentation to confirm active lifecycle status and exact electrical ratings. Ensure that procurement channels provide valid manufacturer traceability and RoHS compliance certificates matching the component specifications.
Ptc Resettable Fuses Selection Notes
Select this component based on its 33V maximum voltage and 1.35A hold current requirements. Consider the 40A maximum fault current capability and the 84 mOhms initial resistance for thermal management. Confirm that the radial package dimensions fit the target PCB layout constraints.
Ptc Resettable Fuses Part Context
This component belongs to the PolySwitch RTEF series of resettable fuses from Littelfuse Inc. It serves as a reusable alternative to traditional one-time fuses, offering protection against overcurrent conditions while maintaining circuit continuity once the fault condition is removed and the device cools down.
Ptc Resettable Fuses Replacement Considerations
Cross-reference with Littelfuse RXEF135-2 for higher voltage applications up to 72V. Verify compatibility with other PolySwitch radial series components ensuring identical hold current and voltage ratings are maintained.
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