RC5025F31R6CS Equivalent & Substitute Parts

Part Overview

The RC5025F31R6CS is a 31.6 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.667W (2/3W) power dissipation in a 2010 (5025 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The part is designed for applications requiring moisture-resistant thick film construction with a temperature coefficient of ±100ppm/°C across an operating range of -55°C to 155°C.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support applications where higher power ratings or automotive-grade certifications are required.

Substiute Parts

RC5025F31R6CS

Samsung Electro-MechanicsIn Stock: 1169RC5025F31R6CS Datasheet

Current PartRFQ

AC2010FK-0731R6L

YAGEOIn Stock: 1557AC2010FK-0731R6L Datasheet

UpgradeRFQ

CRCW201031R6FKEF

Vishay DaleIn Stock: 11051CRCW201031R6FKEF Datasheet

SimilarRFQ

ERJ-12SF31R6U

Panasonic Electronic ComponentsIn Stock: 4539ERJ-12SF31R6U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC5025F31R6CS are qualified based on the following critical parameters:

Electrical Parameters:

• Resistance value: 31.6 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)

Mechanical Parameters:

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

Environmental & Compliance Parameters:

• RoHS3 compliance (required)
• MSL 1 rating (required)
• Moisture resistance capability (required)

Power Rating Consideration: Substitute parts with power ratings of 0.75W (3/4W) or higher are acceptable as they exceed the original 0.667W (2/3W) specification, providing enhanced thermal margin in the same physical package footprint.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Upgrade Path): AC2010FK-0731R6L (YAGEO) is the recommended upgrade substitute. This part maintains all electrical and mechanical specifications of the RC5025F31R6CS while providing a higher power rating (0.75W vs. 0.667W) and automotive AEC-Q200 certification. The part is Active status and suitable for new designs. Moisture resistance is retained, and all compliance certifications match the original specification.

Secondary Substitute (High-Volume Alternative): CRCW201031R6FKEF (Vishay Dale) offers the highest inventory availability (11,035 pcs) with identical electrical parameters and higher power rating. This part carries AEC-Q200 automotive certification and Active product status. Note that moisture resistance is not explicitly listed for this variant, though it maintains all other critical specifications.

Legacy Substitute (Not Recommended for New Designs): ERJ-12SF31R6U (Panasonic Electronic Components) is classified as "Not For New Designs" and should not be selected for new product development. While it meets all electrical and mechanical specifications with AEC-Q200 certification, its discontinued design status makes it unsuitable for long-term supply chain planning.

Selection Criteria:

• For new designs requiring automotive qualification: AC2010FK-0731R6L
• For high-volume applications with standard industrial requirements: CRCW201031R6FKEF
• For direct replacement in existing designs: AC2010FK-0731R6L or CRCW201031R6FKEF
• Avoid ERJ-12SF31R6U for new product development

Frequently Asked Questions (FAQ)

Q: Can AC2010FK-0731R6L be used as a direct replacement for RC5025F31R6CS?

A: Yes. Both parts share identical resistance (31.6 Ohms), tolerance (±1%), package (2010/5025 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The AC2010FK-0731R6L provides a higher power rating (0.75W vs. 0.667W), which is compatible with the original application. Physical dimensions and termination count are identical.

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

A: The 0.75W rating provides approximately 12% additional power dissipation capacity in the same physical package. This higher rating does not affect electrical performance but provides enhanced thermal margin. Applications designed for 0.667W operation will function within specification using a 0.75W-rated component.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (AC2010FK-0731R6L, CRCW201031R6FKEF, and ERJ-12SF31R6U) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original RC5025F31R6CS specification.

Q: What does "Not For New Designs" mean for ERJ-12SF31R6U?

A: This designation indicates that Panasonic has discontinued active development and promotion of this part number. While existing inventory may be available, the part is not recommended for incorporation into new product designs due to uncertain long-term supply availability and potential future discontinuation.

Q: Does the 2010 package dimension remain consistent across all substitutes?

A: Yes. All substitute parts use the 2010 (5025 Metric) package with identical length (0.197" / 5.00mm) and width (0.098" / 2.50mm). Height variations are minimal (0.026" to 0.028" seated height), which do not affect PCB layout or assembly compatibility.

Q: Which substitute part has the highest inventory availability?

A: CRCW201031R6FKEF (Vishay Dale) has the highest inventory with 11,035 pcs in stock, compared to AC2010FK-0731R6L (1,454 pcs) and ERJ-12SF31R6U (4,452 pcs).

Q: Are automotive-grade substitutes required for non-automotive applications?

A: No. The AEC-Q200 automotive certification on AC2010FK-0731R6L and CRCW201031R6FKEF is an additional qualification that does not restrict use in standard industrial applications. These parts are fully compatible with non-automotive designs and provide enhanced reliability margins.