RC6432F1211CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F1211CS is a 1.21 kOhms ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package format. This thick film resistor features moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

RC6432F1211CS

Samsung Electro-MechanicsIn Stock: 1090RC6432F1211CS Datasheet

Current PartRFQ

CRCW25121K21FKEG

Vishay DaleIn Stock: 34976CRCW25121K21FKEG Datasheet

SimilarRFQ

CRCW25121K21FKEGHP

Vishay DaleIn Stock: 4635CRCW25121K21FKEGHP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC6432F1211CS are qualified based on the following criteria:

Electrical Equivalence: Resistance value of 1.21 kOhms with ±1% tolerance and temperature coefficient of ±100ppm/°C must be maintained.

Mechanical Compatibility: Package format must be 2512 (6432 Metric) with two terminations to ensure PCB footprint compatibility.

Environmental Specifications: Operating temperature range of -55°C to 155°C and thick film composition must be preserved.

Compliance Requirements: ROHS3 compliance and MSL 1 rating must be maintained.

Power Rating Consideration: The main part specifies 1W power rating. Substitute parts with equal or higher power ratings (1W or greater) are acceptable as they provide equivalent or enhanced performance capability within the same package envelope.

The identified substitutes meet all mandatory electrical and mechanical parameters while offering additional features such as automotive AEC-Q200 qualification and pulse withstanding capability in certain variants.

Parameter Comparison

Engineering Selection Recommendations

CRCW25121K21FKEG (Vishay Dale): This substitute maintains electrical and mechanical equivalence to the RC6432F1211CS with identical 1W power rating. Both parts are ROHS3 compliant with MSL 1 rating. The CRCW25121K21FKEG adds automotive AEC-Q200 qualification, making it suitable for applications requiring automotive-grade reliability. Packaging is available in Tape & Reel (TR) format with 34,928 units in stock.

CRCW25121K21FKEGHP (Vishay Dale): This variant provides enhanced performance with 1.5W power rating while maintaining all other electrical specifications identical to the main part. The increased power rating provides additional thermal margin in the same 2512 package footprint. This part includes automotive AEC-Q200 qualification and pulse withstanding capability. Packaging is available in Cut Tape (CT) & Digi-Reel® format with 4,534 units in stock. The higher power rating makes this suitable for applications with demanding thermal or transient conditions.

Both substitutes are Active products with full ROHS3 and REACH compliance matching the original part specifications.

Frequently Asked Questions (FAQ)

Q: Can CRCW25121K21FKEG be used as a direct replacement for RC6432F1211CS?

A: Yes. Both parts share identical electrical specifications (1.21 kOhms ±1%, 1W, ±100ppm/°C) and mechanical compatibility (2512 package, 2 terminations). Dimensional variations are within acceptable tolerances for PCB assembly. Both maintain ROHS3 compliance and MSL 1 rating.

Q: What is the difference between CRCW25121K21FKEG and CRCW25121K21FKEGHP?

A: The primary difference is power rating: CRCW25121K21FKEG is rated at 1W while CRCW25121K21FKEGHP is rated at 1.5W. All other electrical parameters are identical. The FKEGHP variant includes pulse withstanding capability. Both are AEC-Q200 qualified. The higher power rating of the FKEGHP provides additional thermal headroom in applications with higher power dissipation or transient conditions.

Q: Are there packaging differences between these parts?

A: Yes. RC6432F1211CS uses standard packaging format. CRCW25121K21FKEG is supplied in Tape & Reel (TR) format. CRCW25121K21FKEGHP is supplied in Cut Tape (CT) & Digi-Reel® format. These packaging differences affect handling and assembly processes but do not impact electrical or mechanical performance.

Q: Do the dimensional differences affect PCB compatibility?

A: The 2512 package footprint is standardized. Minor dimensional variations (width 0.126" vs 0.124", height 0.026" vs 0.028") are within standard PCB design tolerances and do not require layout modifications. All parts are mechanically compatible with standard 2512 footprints.

Q: Which substitute should be selected for automotive applications?

A: Both CRCW25121K21FKEG and CRCW25121K21FKEGHP carry AEC-Q200 automotive qualification. Selection between them depends on power dissipation requirements: use CRCW25121K21FKEG for standard 1W applications or CRCW25121K21FKEGHP for applications requiring 1.5W capability or pulse withstanding performance.

Q: Are all parts RoHS compliant?

A: Yes. RC6432F1211CS, CRCW25121K21FKEG, and CRCW25121K21FKEGHP are all ROHS3 compliant with REACH Unaffected status.