RC6432F54R9CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F54R9CS is a 54.9 Ohm ±1% 1W thick film chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This moisture-resistant component operates across -55°C to 155°C and maintains ROHS3 compliance with unlimited moisture sensitivity level (MSL 1). The part is currently in active production status with 975 pieces available in inventory. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional replacement in circuit applications.

Substiute Parts

RC6432F54R9CS

Samsung Electro-MechanicsIn Stock: 997RC6432F54R9CS Datasheet

Current PartRFQ

CRCW251254R9FKEG

Vishay DaleIn Stock: 252977CRCW251254R9FKEG Datasheet

SimilarRFQ

ERJ-1TNF54R9U

Panasonic Electronic ComponentsIn Stock: 2381ERJ-1TNF54R9U Datasheet

SimilarRFQ

RMCF2512FT54R9

Stackpole Electronics IncIn Stock: 5889RMCF2512FT54R9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC6432F54R9CS are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters: Resistance value (54.9 Ohms), tolerance (±1%), power rating (1W), and temperature coefficient (±100ppm/°C) must match exactly.

Mechanical Parameters: Package designation (2512 / 6432 Metric) and number of terminations (2) must be identical to ensure PCB footprint compatibility.

Environmental Parameters: Operating temperature range (-55°C ~ 155°C), RoHS3 compliance, and MSL rating (1) must be maintained.

Composition: Thick film construction is required for thermal and electrical performance consistency.

All identified substitutes meet these criteria and are suitable for direct replacement in applications where the RC6432F54R9CS is specified.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: RMCF2512FT54R9 (Stackpole Electronics Inc) is the preferred substitute. This part maintains active production status, carries AEC-Q200 automotive qualification, and is available in high inventory (5821 pieces). Electrical and mechanical parameters are identical to the RC6432F54R9CS.

Secondary Selection: CRCW251254R9FKEG (Vishay Dale) is an alternative substitute with active status and extensive inventory availability (252,902 pieces). This part includes AEC-Q200 automotive rating and meets all electrical and mechanical requirements.

Tertiary Selection: ERJ-1TNF54R9U (Panasonic Electronic Components) meets all electrical and mechanical specifications and carries AEC-Q200 qualification. However, this part is marked "Not For New Designs," limiting its suitability for new circuit development. Existing inventory of 2,369 pieces is available for legacy system support.

All three substitutes are ROHS3 compliant with MSL 1 rating and operate across the full -55°C to 155°C temperature range specified for the original part.

Frequently Asked Questions (FAQ)

Q: Can CRCW251254R9FKEG replace RC6432F54R9CS in existing designs?

A: Yes. Both parts share identical electrical specifications (54.9 Ohms ±1%, 1W), operate across -55°C to 155°C, use thick film construction, and are packaged in 2512 (6432 Metric) format. Mechanical dimensions are equivalent, ensuring PCB footprint compatibility.

Q: What is the difference between the substitute parts?

A: All three substitutes meet the core electrical and mechanical requirements. The primary differences are manufacturer identity, product status, and inventory availability. RMCF2512FT54R9 and CRCW251254R9FKEG are in active production. ERJ-1TNF54R9U is marked "Not For New Designs" but remains available for legacy applications.

Q: Are all substitutes automotive-qualified?

A: CRCW251254R9FKEG and RMCF2512FT54R9 carry AEC-Q200 automotive qualification. ERJ-1TNF54R9U also includes AEC-Q200 rating. The original RC6432F54R9CS specifies moisture resistance but does not list automotive qualification in the provided data.

Q: Do package dimensions vary between substitutes?

A: All parts use the 2512 (6432 Metric) package. Minor dimensional variations exist within tolerance: length ranges from 0.248" to 0.252" (6.30mm to 6.40mm), width from 0.124" to 0.126" (3.15mm to 3.20mm), and height from 0.026" to 0.028" (0.66mm to 0.70mm). These variations remain within standard PCB design tolerances.

Q: Which substitute offers the best inventory availability?

A: CRCW251254R9FKEG (Vishay Dale) provides the highest inventory with 252,902 pieces available. RMCF2512FT54R9 (Stackpole) offers 5,821 pieces, and ERJ-1TNF54R9U (Panasonic) has 2,369 pieces in stock.

Q: Can ERJ-1TNF54R9U be used in new product designs?

A: ERJ-1TNF54R9U is designated "Not For New Designs." For new circuit development, select RMCF2512FT54R9 or CRCW251254R9FKEG, both of which maintain active production status.