RC5025F5112CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F5112CS is a 51.1 kOhms ±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 and features moisture-resistant construction with an operating temperature range of -55°C to 155°C. The part maintains Active product status with 684 units currently in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter set. Alternative sources provide equivalent resistance, tolerance, and package specifications while offering different power ratings, packaging formats, or application certifications.

Substiute Parts

RC5025F5112CS

Samsung Electro-MechanicsIn Stock: 738RC5025F5112CS Datasheet

Current PartRFQ

CRCW201051K1FKEF

Vishay DaleIn Stock: 10739CRCW201051K1FKEF Datasheet

SimilarRFQ

ERJ-12SF5112U

Panasonic Electronic ComponentsIn Stock: 9586ERJ-12SF5112U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across critical electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Critical Parameters (Must Match Exactly):

• Resistance value: 51.1 kOhms
• Tolerance: ±1%
• Package format: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Compatible Variation Parameters (May Differ):

• Power rating: Substitute parts rated at 0.75W (3/4W) are compatible with applications requiring 0.667W (2/3W) due to higher power capacity
• Packaging format: Tape & Reel (TR) packaging is compatible with applications originally specified for standard packaging
• Application certifications: Automotive AEC-Q200 certification is an additional feature that does not prevent substitution in non-automotive applications

Identified Substitute Parts:

1. CRCW201051K1FKEF (Vishay Dale) - Meets all critical parameters with higher power rating and automotive certification
2. ERJ-12SF5112U (Panasonic Electronic Components) - Meets all critical parameters with higher power rating and automotive certification; marked as Not For New Designs

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CRCW201051K1FKEF (Vishay Dale)

This part is the preferred substitute for new designs and ongoing production. It maintains Active product status, meets all critical electrical and mechanical parameters, and provides a higher power rating (0.75W vs. 0.667W) that ensures adequate margin in power dissipation applications. The Automotive AEC-Q200 certification indicates enhanced reliability screening and is compatible with both automotive and general industrial applications. Tape & Reel packaging is standard for high-volume production environments.

Secondary Substitute: ERJ-12SF5112U (Panasonic Electronic Components)

This part meets all critical electrical and mechanical parameters and provides equivalent power rating elevation. However, its designation as "Not For New Designs" indicates that Panasonic has discontinued active development and support for this product line. This part is suitable only for legacy system maintenance, repair, or applications where existing supply chain commitments exist. New design initiatives should not incorporate this part.

Substitution Constraints:

• Both substitute parts exceed the original power rating specification, which is acceptable for applications where power dissipation does not exceed 0.667W
• Automotive AEC-Q200 certification on substitute parts does not restrict use in non-automotive applications
• All parts maintain identical resistance, tolerance, temperature coefficient, and operating temperature specifications
• Moisture sensitivity level remains unchanged across all options

Frequently Asked Questions (FAQ)

Q: Can CRCW201051K1FKEF replace RC5025F5112CS in existing designs?

A: Yes. The CRCW201051K1FKEF maintains identical electrical specifications (51.1 kOhms ±1%, ±100ppm/°C, -55°C to 155°C operating range) and mechanical compatibility (2010 package). The higher power rating (0.75W vs. 0.667W) provides additional margin and does not create incompatibility. Direct substitution is valid for applications where the original part was specified.

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

A: The power rating indicates maximum continuous power dissipation under specified conditions. A 0.75W-rated part can safely dissipate up to 0.75W continuously, while a 0.667W-rated part is limited to 0.667W. If an application requires only 0.667W or less, a 0.75W-rated substitute operates within its safe operating range with additional thermal margin. The higher rating does not degrade performance in lower-power applications.

Q: Why is ERJ-12SF5112U marked "Not For New Designs"?

A: This designation indicates that Panasonic has transitioned this product to end-of-life status and is not actively supporting new applications. While the part remains electrically and mechanically compatible, it should not be selected for new product development. Existing inventory may be used for legacy system support or repair applications where supply continuity is already established.

Q: Are the substitute parts available in the same packaging format as the original?

A: The original RC5025F5112CS is specified with standard packaging. Both substitute parts are available in Tape & Reel (TR) format, which is the standard packaging for high-volume production. Tape & Reel packaging is compatible with automated assembly equipment and is the industry standard for 2010 package resistors. If alternative packaging is required, contact the manufacturer directly.

Q: Do the substitute parts maintain the same moisture resistance characteristics?

A: Yes. All three parts maintain Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. The RC5025F5112CS is explicitly specified as moisture-resistant, and both substitute parts maintain equivalent MSL ratings. No additional moisture protection measures are required when substituting.

Q: Are there any compliance differences between the original and substitute parts?

A: All three parts are ROHS3 Compliant and REACH Unaffected. The substitute parts carry Automotive AEC-Q200 certification, which indicates enhanced reliability screening and qualification for automotive applications. This certification does not restrict use in non-automotive applications and represents an additional quality assurance measure.