RMCF2512FT2K21 Equivalent & Substitute Parts

Part Overview

The RMCF2512FT2K21 is a 2.21 kOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Stackpole Electronics Inc. This thick film automotive-grade resistor meets AEC-Q200 qualification standards and is designed for high-reliability applications requiring precision resistance values in compact surface-mount form factors. The part is currently active in production with 2936 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

RMCF2512FT2K21

Stackpole Electronics IncIn Stock: 2999RMCF2512FT2K21 Datasheet

Current PartRFQ

CRCW25122K21FKEG

Vishay DaleIn Stock: 5866CRCW25122K21FKEG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCF2512FT2K21 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2.21 kOhms
• Tolerance: ±1%
• Power rating: 1W
• Package type: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant

The CRCW25122K21FKEG from Vishay Dale meets all these parameters and qualifies as a direct electrical and mechanical equivalent. Packaging format differences (Tape & Reel vs. Cut Tape & Digi-Reel) do not affect functional compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RMCF2512FT2K21 and CRCW25122K21FKEG are active production parts with identical electrical specifications and AEC-Q200 automotive qualification. Selection between these parts should be based on:

• Availability and lead time from respective suppliers
• Packaging format requirements (Tape & Reel vs. Cut Tape & Digi-Reel)
• Procurement cost and volume pricing
• Existing supply chain relationships

Both parts maintain full compliance with ROHS3 and REACH requirements. The minor dimensional variation in width (0.126" vs. 0.124") falls within standard PCB layout tolerances for 2512 package footprints and does not affect circuit performance or board assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can CRCW25122K21FKEG be used as a direct replacement for RMCF2512FT2K21?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. Both meet AEC-Q200 automotive qualification and ROHS3 compliance.

Q: Are there packaging compatibility concerns?

A: The RMCF2512FT2K21 is supplied in Tape & Reel format, while the CRCW25122K21FKEG is available in Cut Tape & Digi-Reel format. Both formats are compatible with standard PCB assembly equipment. Packaging selection depends on production volume and assembly line requirements.

Q: What is the significance of the AEC-Q200 rating?

A: AEC-Q200 certification indicates the resistor meets automotive industry reliability and performance standards for high-temperature and high-reliability applications. Both substitute parts carry this qualification.

Q: Do the minor dimensional differences affect PCB layout?

A: The width difference of 0.002" (0.05mm) between parts is within standard PCB footprint tolerances for 2512 packages. Both parts use identical 2512 (6432 Metric) package specifications and are footprint-compatible.

Q: Are both parts RoHS compliant?

A: Yes. Both RMCF2512FT2K21 and CRCW25122K21FKEG are ROHS3 compliant and REACH unaffected.