CRCW120637K4FKEAC Equivalent & Substitute Parts

Part Overview

The CRCW120637K4FKEAC is a 37.4 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Vishay Dale. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are necessary to address supply chain availability, lead time requirements, or specific application certifications such as automotive AEC-Q200 qualification when required by end-use specifications.

Substiute Parts

CRCW120637K4FKEAC

Vishay DaleIn Stock: 822CRCW120637K4FKEAC Datasheet

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KTR18EZPF3742

Rohm SemiconductorIn Stock: 9581KTR18EZPF3742 Datasheet

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RMCF1206FT37K4

Stackpole Electronics IncIn Stock: 3146RMCF1206FT37K4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CRCW120637K4FKEAC are qualified based on the following criteria:

• Identical resistance value: 37.4 kOhms
• Identical tolerance: ±1%
• Identical power rating: 0.25W (1/4W)
• Identical package: 1206 (3216 Metric)
• Identical composition: Thick Film
• Identical temperature coefficient: ±100ppm/°C
• Identical operating temperature range: -55°C ~ 155°C
• Identical RoHS3 compliance status
• Identical MSL rating: 1 (Unlimited)

The substitute parts listed below meet all these electrical and mechanical parameters. Additional certifications such as AEC-Q200 automotive qualification are noted where applicable but do not disqualify substitution for non-automotive applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts listed are Active product status components with full RoHS3 compliance and identical core electrical specifications. Selection between CRCW120637K4FKEAC, KTR18EZPF3742, and RMCF1206FT37K4 should be based on:

• Supply chain availability and lead time requirements
• Inventory levels at component distributors
• Application requirements for automotive certification (AEC-Q200 qualification is present in KTR18EZPF3742 and RMCF1206FT37K4 only)
• Physical dimensions tolerance if board layout constraints exist (minor variations in length and height are documented)

All parts are functionally equivalent for general-purpose applications within the specified electrical and thermal parameters.

Frequently Asked Questions (FAQ)

Q: Can KTR18EZPF3742 or RMCF1206FT37K4 be used as direct replacements for CRCW120637K4FKEAC?

A: Yes. All three parts share identical resistance, tolerance, power rating, package type, composition, temperature coefficient, and operating temperature range. They are electrically and mechanically interchangeable for applications not requiring specific manufacturer qualification.

Q: What is the significance of AEC-Q200 certification on the substitute parts?

A: AEC-Q200 is an automotive qualification standard. KTR18EZPF3742 and RMCF1206FT37K4 carry this certification, making them suitable for automotive applications. The CRCW120637K4FKEAC does not list this certification. For non-automotive applications, this difference is not relevant to substitution.

Q: Are there physical dimension differences between these parts?

A: Minor variations exist. CRCW120637K4FKEAC measures 0.120" L x 0.061" W with 0.026" max height. KTR18EZPF3742 and RMCF1206FT37K4 measure 0.126" L x 0.063" W. RMCF1206FT37K4 has 0.028" max height versus 0.026" for the others. These differences are within standard 1206 package tolerances and do not affect PCB footprint compatibility.

Q: What packaging format is used for these parts?

A: All three parts are supplied in Tape & Reel (TR) format, standard for high-volume surface mount component distribution.

Q: Are all parts RoHS3 compliant?

A: Yes. CRCW120637K4FKEAC, KTR18EZPF3742, and RMCF1206FT37K4 are all RoHS3 compliant with MSL rating 1 (Unlimited moisture sensitivity level).