CRCW251237R4FKTH Equivalent & Substitute Parts

Part Overview

The CRCW251237R4FKTH is a 37.4 Ohm ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Vishay Dale. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently active in production. Substitute parts are necessary to address supply chain flexibility, compliance requirements, or packaging preferences while maintaining equivalent electrical and mechanical performance.

Substiute Parts

CRCW251237R4FKTH

Vishay DaleIn Stock: 1020CRCW251237R4FKTH Datasheet

Current PartRFQ

CRCW251237R4FKEG

Vishay DaleIn Stock: 2690CRCW251237R4FKEG Datasheet

DirectRFQ

ERJ-1TNF37R4U

Panasonic Electronic ComponentsIn Stock: 5040ERJ-1TNF37R4U Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CRCW251237R4FKTH is determined by the following critical parameters:

• Resistance value: 37.4 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Package: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive rating: AEC-Q200
• Termination count: 2
• Moisture sensitivity: 1 (Unlimited)

All substitute parts listed maintain these electrical and mechanical specifications. Variations in physical dimensions within tolerance, RoHS compliance status, and product lifecycle status are noted but do not affect functional substitutability in applications requiring these core parameters.

Parameter Comparison

Engineering Selection Recommendations

CRCW251237R4FKEG (Vishay Dale) is the primary substitute for CRCW251237R4FKTH. Both parts are manufactured by Vishay Dale and maintain identical electrical specifications. CRCW251237R4FKEG offers improved compliance status with ROHS3 certification and REACH Unaffected designation, compared to the main part's RoHS non-compliant and REACH Affected status. Both parts are active in production.

ERJ-1TNF37R4U (Panasonic Electronic Components) is a secondary substitute that meets all electrical and mechanical requirements. This part carries ROHS3 compliance and REACH Unaffected status. However, ERJ-1TNF37R4U is designated as Not For New Designs, limiting its suitability for new product development. Physical dimensions show minor variation (0.252" L x 0.126" W versus 0.248" L x 0.124" W), remaining within standard PCB layout tolerances.

Selection should prioritize CRCW251237R4FKEG for new designs requiring improved regulatory compliance. ERJ-1TNF37R4U is suitable only for legacy system maintenance or applications where existing inventory constraints necessitate its use.

Frequently Asked Questions (FAQ)

Q: Can CRCW251237R4FKEG be used as a direct replacement for CRCW251237R4FKTH?

A: Yes. Both parts share identical electrical specifications (37.4 Ohms ±1%, 1W, ±100ppm/°C, -55°C to 155°C) and package configuration (2512 / 6432 Metric). CRCW251237R4FKEG offers superior compliance status and is actively produced.

Q: What is the difference between CRCW251237R4FKTH and CRCW251237R4FKEG?

A: The primary differences are RoHS and REACH compliance. CRCW251237R4FKTH is RoHS non-compliant and REACH Affected. CRCW251237R4FKEG is ROHS3 Compliant and REACH Unaffected. Electrical and mechanical performance are equivalent.

Q: Is ERJ-1TNF37R4U suitable for new product designs?

A: No. ERJ-1TNF37R4U carries a Not For New Designs status. It is suitable only for replacement or maintenance applications in existing systems. For new designs, use CRCW251237R4FKEG or CRCW251237R4FKTH.

Q: Are there physical dimension differences between these parts?

A: ERJ-1TNF37R4U has slightly larger dimensions (0.252" L x 0.126" W) compared to Vishay Dale parts (0.248" L x 0.124" W). Both conform to 2512 package specifications and are compatible with standard PCB layouts designed for this package class.

Q: Do all substitute parts maintain AEC-Q200 automotive qualification?

A: Yes. CRCW251237R4FKTH, CRCW251237R4FKEG, and ERJ-1TNF37R4U all carry AEC-Q200 automotive rating and are suitable for automotive applications within specified operating parameters.

Q: What is the moisture sensitivity level for these parts?

A: All three parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.