RC6432F37R4CS Equivalent & Substitute Parts

Part Overview

The RC6432F37R4CS is a 37.4 Ohm ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This moisture-resistant thick film resistor is designed for general-purpose applications requiring precision resistance values with moderate power dissipation. The part maintains Active product status with 806 units currently in stock. Substitute parts are identified to address supply chain continuity, inventory availability, or specific application requirements such as automotive qualification.

Substiute Parts

RC6432F37R4CS

Samsung Electro-MechanicsIn Stock: 902RC6432F37R4CS Datasheet

Current PartRFQ

CRCW251237R4FKEG

Vishay DaleIn Stock: 2690CRCW251237R4FKEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F37R4CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 37.4 Ohms (exact match required)
• Tolerance: ±1% (precision class must be maintained)
• Power Rating: 1W (thermal capability must be equal or greater)
• Package / Case: 2512 (6432 Metric) (PCB footprint compatibility)
• Composition: Thick Film (material technology)
• Temperature Coefficient: ±100ppm/°C (stability specification)
• Operating Temperature Range: -55°C ~ 155°C (environmental capability)

Compliance Parameters:

• RoHS3 Compliant status required
• Moisture Sensitivity Level 1 acceptable

The identified substitute CRCW251237R4FKEG from Vishay Dale meets all mandatory matching parameters and maintains full regulatory compliance. The addition of AEC-Q200 automotive qualification in the substitute part represents an enhanced feature set rather than a deviation from base specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: RC6432F37R4CS

Use the Samsung Electro-Mechanics RC6432F37R4CS when:

• Standard industrial or consumer applications do not require automotive qualification
• Moisture-resistant thick film composition is the specified requirement
• Samsung supply chain and logistics are preferred
• Current inventory availability (806 units) meets project timeline

Substitute Part: CRCW251237R4FKEG

Use the Vishay Dale CRCW251237R4FKEG when:

• Automotive applications requiring AEC-Q200 qualification are specified
• Enhanced reliability documentation is required for mission-critical circuits
• Vishay supply chain provides better lead time or cost advantage
• Higher inventory availability (2595 units) supports larger production volumes
• Tape & Reel packaging format is required for automated assembly

Both parts maintain identical electrical performance, thermal characteristics, and regulatory compliance. Selection between them is determined by application class (automotive vs. general-purpose) and supply chain logistics rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can CRCW251237R4FKEG be used as a direct replacement for RC6432F37R4CS in non-automotive applications?

A: Yes. The CRCW251237R4FKEG meets all electrical and mechanical specifications required for direct substitution. The AEC-Q200 automotive qualification is an additional feature that does not restrict use in general-purpose applications. PCB footprint compatibility is confirmed within dimensional tolerances.

Q: What is the significance of the dimensional difference (0.126" vs. 0.124" width)?

A: The 0.002" (0.05mm) width difference falls within standard PCB design tolerances for 2512 package footprints. Both parts are mechanically compatible with standard 2512 land patterns. Height difference (0.026" vs. 0.028") is similarly negligible for clearance considerations.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both RC6432F37R4CS and CRCW251237R4FKEG support the full -55°C to 155°C operating temperature range with ±100ppm/°C temperature coefficient. Thick film composition ensures stable resistance values across this range.

Q: What packaging formats are available for each part?

A: RC6432F37R4CS is supplied in standard packaging format. CRCW251237R4FKEG is available in Tape & Reel (TR) format, which is optimized for automated pick-and-place assembly processes.

Q: Do both parts meet RoHS and REACH compliance requirements?

A: Yes. Both RC6432F37R4CS and CRCW251237R4FKEG are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronics manufacturing in regulated markets.

Q: Is moisture sensitivity a concern for either part?

A: No. Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage, handling, or assembly. Standard warehouse conditions are acceptable.