RF4929-000

$0.80

Description：PICOASMDCH020F-2
Series：PolySwitch®, SMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:c69a43cce986 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

RF4929-000 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PICOASMDCH020F-2. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for RF4929-000

Description：PICOASMDCH020F-2
Series：PolySwitch®, SMD
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：16V
Current - Hold (Ih) (Max)：200 mA
Current - Trip (It)：700 mA
Current - Max：40 A
Time to Trip：100 ms
Resistance - Initial (Ri) (Min)：750 mOhms
Resistance - Post Trip (R1) (Max)：3.4 Ohms
Resistance - 25°C (Typ)：-
Operating Temperature：-40°C ~ 125°C
Grade：Automotive
Qualification：AEC-Q200
Ratings：-
Mounting Type：Surface Mount
Package / Case：0805 (2012 Metric), Concave
Size / Dimension：0.083" L x 0.055" W (2.10mm x 1.40mm)
Height - Seated (Max)：-
Thickness (Max)：0.031" (0.80mm)
Lead Spacing：-

Ptc Resettable Fuses datasheet and documents for RF4929-000

RF4929-000

Ptc Resettable Fuses Overview

The RF4929-000 is a surface-mount PolySwitch resettable PPTC fuse manufactured by Littelfuse. It features a hold current of 200 mA and a trip current of 700 mA, with a maximum voltage rating of 16 VDC. The device has a maximum fault current rating of 40 A and an initial resistance of 3.4 ohms. It operates within a temperature range of -40°C to +125°C. The component is supplied in cut tape, reel, or MouserReel packaging formats.

Ptc Resettable Fuses Feature Summary

Provides reliable overcurrent protection for sensitive electronic circuits through automatic resistance increase upon heating.
Designed for direct surface-mount soldering onto printed circuit boards (PCBs).
Offers resettable functionality to restore circuit continuity after fault conditions clear.

Ptc Resettable Fuses Applications

Protection of portable electronics and consumer devices
Overcurrent safeguarding for USB ports and interfaces
Circuit protection in telecommunications equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific package variant required for your assembly process, as the part is available in cut tape, reel, and MouserReel configurations. Confirm that the 16 VDC voltage rating and 200 mA hold current align with your circuit design requirements before finalizing the order.

Ptc Resettable Fuses Selection Notes

Select this component when space-constrained PCB layouts require a surface-mount overcurrent solution. Ensure the operating environment stays within the -40°C to +125°C range. The 3.4 ohm initial resistance should be evaluated against signal integrity or power loss constraints in low-voltage applications.

Ptc Resettable Fuses Part Context

This device belongs to the PolySwitch resettable fuse family from Littelfuse. These solid-state PTC devices function by raising resistance as they heat up during overcurrent events. The RF series specifically targets surface-mount applications, providing compact protection alternatives to traditional axial leaded fuses.