RC5025F4020CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F4020CS is a 402 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 2010 (5025 Metric) package format. This component is rated for 0.667W (2/3W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and carries full RoHS3 compliance with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope. Alternative sources become necessary for supply chain optimization, inventory availability, or design flexibility while preserving circuit functionality.

Substiute Parts

RC5025F4020CS

Samsung Electro-MechanicsIn Stock: 1148RC5025F4020CS Datasheet

Current PartRFQ

CRCW2010402RFKEF

Vishay DaleIn Stock: 26291CRCW2010402RFKEF Datasheet

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ERJ-12SF4020U

Panasonic Electronic ComponentsIn Stock: 2394ERJ-12SF4020U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F4020CS is determined by strict alignment with the following critical parameters:

Electrical Compatibility Requirements:

• Resistance value: 402 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C minimum (equal or wider range acceptable)

Mechanical Compatibility Requirements:

• Package format: 2010 (5025 Metric) (exact match required)
• Number of terminations: 2 (exact match required)
• Composition: Thick Film (exact match required)

Power Rating Consideration: The RC5025F4020CS is rated at 0.667W (2/3W). Substitute parts with equal or higher power ratings (0.75W or greater) are functionally compatible, as they provide equal or superior thermal performance in the same package footprint.

Compliance Requirements:

• RoHS3 compliance (mandatory)
• MSL 1 rating (mandatory for unlimited moisture exposure)

Parameter Comparison

Engineering Selection Recommendations

CRCW2010402RFKEF (Vishay Dale) - Primary Substitute

The CRCW2010402RFKEF meets all electrical and mechanical compatibility criteria with the RC5025F4020CS. Both components share identical resistance value, tolerance, temperature coefficient, and operating temperature range. The Vishay part provides 0.75W power rating, which exceeds the 0.667W specification of the Samsung part, delivering superior thermal margin within the identical 2010 package footprint. The CRCW2010402RFKEF carries Active product status, ensuring long-term availability and design support. Automotive AEC-Q200 qualification provides additional reliability assurance. RoHS3 compliance and MSL 1 rating are maintained. This part is suitable for new designs and production applications.

ERJ-12SF4020U (Panasonic Electronic Components) - Secondary Substitute

The ERJ-12SF4020U satisfies all core electrical and mechanical substitution parameters. Resistance, tolerance, temperature coefficient, and operating temperature specifications are identical to the RC5025F4020CS. The 0.75W power rating provides equivalent thermal performance. Physical dimensions and termination count match the 2010 package requirement. RoHS3 compliance and MSL 1 rating are present. However, this part carries "Not For New Designs" product status, indicating Panasonic has discontinued active development and support. The ERJ-12SF4020U is suitable only for replacement or maintenance applications where existing inventory exists. New design implementations should prioritize the CRCW2010402RFKEF or the original RC5025F4020CS.

Frequently Asked Questions (FAQ)

Q: Can the CRCW2010402RFKEF replace the RC5025F4020CS in existing designs?

A: Yes. The CRCW2010402RFKEF is electrically and mechanically compatible. Both parts share 402 Ohm resistance, ±1% tolerance, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The Vishay part's 0.75W rating exceeds the Samsung part's 0.667W specification, providing thermal margin. Physical footprint compatibility is confirmed through identical 2010 (5025 Metric) package dimensions.

Q: What is the difference between the 0.667W and 0.75W power ratings?

A: Power rating indicates maximum continuous power dissipation capability. The CRCW2010402RFKEF (0.75W) and ERJ-12SF4020U (0.75W) both exceed the RC5025F4020CS (0.667W) specification. In applications where the original part dissipates 0.667W or less, the higher-rated substitutes operate with additional thermal margin, improving reliability and component lifespan.

Q: Are there height differences between these parts?

A: The RC5025F4020CS has a maximum seated height of 0.026" (0.66mm), while both substitute parts (CRCW2010402RFKEF and ERJ-12SF4020U) have a maximum seated height of 0.028" (0.70mm). This 0.002" (0.04mm) difference is negligible for most PCB assembly applications and does not affect component placement or clearance in standard 2010 package designs.

Q: Why is the ERJ-12SF4020U marked "Not For New Designs"?

A: "Not For New Designs" status indicates that Panasonic has transitioned this part to end-of-life phase. While existing inventory remains available for replacement and maintenance applications, Panasonic no longer actively supports or develops this component. New circuit designs should specify the RC5025F4020CS or CRCW2010402RFKEF to ensure long-term supply chain stability and manufacturer support.

Q: Do all three parts meet RoHS3 and MSL 1 requirements?

A: Yes. The RC5025F4020CS, CRCW2010402RFKEF, and ERJ-12SF4020U all carry RoHS3 Compliant status and MSL 1 (Unlimited) moisture sensitivity rating. These certifications are maintained across all three parts, ensuring compliance with environmental regulations and reliability in moisture-exposed environments.

Q: What packaging formats are available for these parts?

A: The RC5025F4020CS is supplied in standard packaging format. The CRCW2010402RFKEF is available in Tape & Reel (TR) format. The ERJ-12SF4020U is also available in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated PCB assembly processes and does not affect electrical or mechanical performance.