RSF12JTR430 Equivalent & Substitute Parts

Part Overview

The RSF12JTR430 is a 430 mOhms ±5% 0.5W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, operating across a temperature range of -55°C to 200°C. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified to address inventory availability, packaging format requirements, or power rating upgrades while maintaining electrical and mechanical compatibility.

Substiute Parts

RSF12JTR430

Stackpole Electronics IncIn Stock: 761RSF12JTR430 Datasheet

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RSMF1JTR430

Stackpole Electronics IncIn Stock: 4315RSMF1JTR430 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RSMF1JTR430 qualifies as a substitute for the RSF12JTR430 based on the following critical parameters:

Electrical compatibility is maintained through identical resistance value (430 mOhms) and tolerance (±5%). Both parts share the same temperature coefficient (±200ppm/°C) and operating temperature range (-55°C to 200°C), ensuring thermal performance equivalence.

Mechanical compatibility is preserved through identical package type (Axial), physical dimensions (0.126" Dia x 0.354" L / 3.20mm x 9.00mm), and termination count (2). Both parts are manufactured from metal oxide film composition with safety features.

The primary difference is the power rating upgrade from 0.5W to 1W and packaging format change from Tape & Reel to Cut Tape. The higher power rating of the substitute part ensures it can handle or exceed the thermal dissipation requirements of the original part. Both parts maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF12JTR430 and RSMF1JTR430 maintain full ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for applications subject to environmental restrictions. The substitute part RSMF1JTR430 provides a higher power rating (1W versus 0.5W) while preserving all critical electrical parameters including resistance, tolerance, and temperature coefficient.

Selection between these parts should be based on application power dissipation requirements and packaging format availability. The 1W rated substitute part is suitable for applications where the original 0.5W specification may be marginal or where future design margin is required. The packaging format difference (Tape & Reel versus Cut Tape) affects procurement and assembly processes but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can RSMF1JTR430 be used as a direct replacement for RSF12JTR430?

A: Yes. Both parts share identical resistance (430 mOhms), tolerance (±5%), temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 200°C), and physical dimensions (0.126" Dia x 0.354" L). The substitute part features a higher power rating (1W versus 0.5W), which is compatible with applications designed for the original 0.5W part.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging provides components on tape segments cut to specific lengths, suitable for lower-volume or manual assembly processes. Both formats contain identical components with no electrical or mechanical differences.

Q: Are there any compliance differences between the two parts?

A: No. Both RSF12JTR430 and RSMF1JTR430 are ROHS3 compliant and REACH unaffected, ensuring equivalent regulatory status for applications subject to environmental restrictions.

Q: Why would the higher power rating of RSMF1JTR430 be beneficial?

A: The 1W power rating of the substitute part provides additional thermal margin compared to the 0.5W original specification. In applications where resistor power dissipation approaches the rated limit, the higher power rating reduces thermal stress and extends component life.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts measure 0.126" Dia x 0.354" L (3.20mm x 9.00mm) and use identical axial package configuration with 2 terminations, ensuring mechanical compatibility in PCB layouts and through-hole assembly processes.