What are the key specifications?

Resistance: 300mΩ, Tolerance: ±1%, Power Rating: 1W, Package: 2512, Operating Temperature: -55°C to +155°C.

What is the pinout of 25121WF300LT4E?

Use the 25121WF300LT4E datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about 25121WF300LT4E pinout to locate pins, power rails, and interface signals before layout.

25121WF300LT4E Datasheet, Specs, Alternatives & ECAD | UNI-ROYAL

AI summary

The 25121WF300LT4E is a 1W, 300mΩ thick film chip resistor from UNI-ROYAL with ±1% tolerance.

Best for

General purpose electronics
Power management circuits

Avoid if

Applications requiring extreme precision or very low TCR

Check before use

Thermal dissipation on the PCB

Key specifications

Resistance: 300 mΩ
Tolerance: ±1%
Power: 1 W

Compliance & Environment

RoHS: Lead-Free
REACH: -
MSL: -
ECCN: -
HTSUS: -

Application

GeneralPower

Datasheet

db1e05886fddbe66d6b23415489ce4fd_2206011100_UNI-ROYAL-Uniroyal-Elec-25121WF300LT4E_C474208.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for 25121WF300LT4E: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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PCB Footprint

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3D Model

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KiCad Library

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Alternative components

Part	Details	Match
HoYLR2512-3W-300mR-1%Manufacturer	HoYLR2512-3W-300mR-1% is a Redesign Alternative for 25121WF300LT4E, because output current rating covers the original; review the narrower temperature rating.	Has caveats

RLP25FEER300Manufacturer	RLP25FEER300 is Not Recommended as a replacement for 25121WF300LT4E, because output current rating is below the required load and package / footprint differs.	Has caveats
FRM252WJR300TKManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
HoJLR2512-3W-300mR-1%Manufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
PT2512FK-7W0R33LManufacturer	URL can't contain control characters. '/component/docs/51f894a7b38d5abc7e25c56b5be87278_2210201630_YAGEO-PT2512FK-7W0R33L_C875883.pdf, https://datasheet.octopart.com/PT2512FK-7W0R33L-Yageo-datasheet-86814862.pdf, https://sigma.octopart.com/rohs_statement/Yageo-company-2.pdf, https://sigma.octopart.com/conflict_mineral_statement/Yageo-company-3.pdf, https://datasheet.datasheetarchive.com/originals/dk/DKDS-24/461314.pdf' (found at least ' ')	Has caveats

Design and risk insights

Questions & answers

It is a surface-mount thick film chip resistor in a 2512 package, offering 300mΩ resistance and 1W power handling.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Alternative components

Design and risk insights

Questions & answers

What is the 25121WF300LT4E?+×

What are the key specifications?+×

What is the pinout of 25121WF300LT4E?+×