RC5025F51R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F51R1CS is a 51.1 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 2010 (5025 Metric) package format with 0.667W power rating. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package format. The following equivalent and substitute parts share the core resistance value, tolerance, package dimensions, and operating temperature range, with variations in power rating and manufacturer-specific certifications.

Substiute Parts

RC5025F51R1CS

Samsung Electro-MechanicsIn Stock: 849RC5025F51R1CS Datasheet

Current PartRFQ

AC2010FK-0751R1L

YAGEOIn Stock: 6525AC2010FK-0751R1L Datasheet

UpgradeRFQ

RC2010FK-0751R1L

YAGEOIn Stock: 9488RC2010FK-0751R1L Datasheet

UpgradeRFQ

CRCW201051R1FKEF

Vishay DaleIn Stock: 8134CRCW201051R1FKEF Datasheet

SimilarRFQ

ERJ-12SF51R1U

Panasonic Electronic ComponentsIn Stock: 19997ERJ-12SF51R1U Datasheet

SimilarRFQ

RMCF2010FT51R1

Stackpole Electronics IncIn Stock: 3628RMCF2010FT51R1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

• Resistance value: 51.1 Ohms
• Tolerance: ±1%
• Package format: 2010 (5025 Metric)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Composition: Thick Film
• RoHS3 compliance
• MSL 1 rating

Allowable Variations:

• Power rating: Substitute parts rated at 0.75W (3/4W) are acceptable as they exceed the original 0.667W specification
• Packaging format: Tape & Reel (TR) is compatible with original packaging
• Manufacturer-specific certifications: AEC-Q200 automotive qualification is an additional feature, not a requirement

Substitute Classification:

Upgrade Substitutes (Higher power rating, same or enhanced features):

• AC2010FK-0751R1L (YAGEO) – 0.75W with AEC-Q200
• RC2010FK-0751R1L (YAGEO) – 0.75W standard

Similar Substitutes (Higher power rating with automotive qualification):

• CRCW201051R1FKEF (Vishay Dale) – 0.75W with AEC-Q200
• ERJ-12SF51R1U (Panasonic) – 0.75W with AEC-Q200
• RMCF2010FT51R1 (Stackpole Electronics) – 0.75W with AEC-Q200

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

RC2010FK-0751R1L and AC2010FK-0751R1L from YAGEO are the preferred upgrade substitutes. Both maintain Active product status, provide increased power headroom at 0.75W, and are available in high inventory quantities (9,397 and 6,433 units respectively). AC2010FK-0751R1L includes AEC-Q200 automotive qualification for applications requiring automotive-grade components.

Secondary Substitutes (Active Status with Automotive Qualification):

CRCW201051R1FKEF (Vishay Dale) and RMCF2010FT51R1 (Stackpole Electronics) are suitable alternatives with Active product status and AEC-Q200 certification. Both provide 0.75W power rating and maintain all electrical and mechanical compatibility parameters.

Legacy Substitute (Not Recommended for New Designs):

ERJ-12SF51R1U from Panasonic is classified as "Not For New Designs" despite meeting all electrical and mechanical specifications. This part should be used only for replacement or maintenance of existing assemblies where continuity with original component sourcing is required.

Selection Criteria:

• For standard applications: RC2010FK-0751R1L offers cost-effective substitution with Active status
• For automotive applications: AC2010FK-0751R1L, CRCW201051R1FKEF, or RMCF2010FT51R1 provide AEC-Q200 compliance
• For legacy system maintenance: ERJ-12SF51R1U maintains cross-compatibility despite discontinued new design status

Frequently Asked Questions (FAQ)

Q: Can RC2010FK-0751R1L directly replace RC5025F51R1CS in existing designs?

A: Yes. Both parts share identical resistance (51.1 Ω), tolerance (±1%), package format (2010), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The substitute provides higher power rating (0.75W vs. 0.667W), which is a non-limiting upgrade for circuit compatibility.

Q: What is the difference between "Upgrade" and "Similar" substitute classifications?

A: Upgrade substitutes (AC2010FK-0751R1L, RC2010FK-0751R1L) are direct power-rated improvements from the same or equivalent manufacturers. Similar substitutes (CRCW201051R1FKEF, ERJ-12SF51R1U, RMCF2010FT51R1) meet all electrical and mechanical requirements but may include additional certifications such as AEC-Q200 automotive qualification.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) format, which is compatible with standard pick-and-place assembly equipment.

Q: Does AEC-Q200 certification affect electrical performance?

A: No. AEC-Q200 is an automotive qualification standard that certifies manufacturing quality and reliability for automotive applications. It does not alter the electrical specifications (resistance, tolerance, temperature coefficient) of the component.

Q: Why is ERJ-12SF51R1U marked "Not For New Designs"?

A: This designation indicates the part is in legacy or end-of-life status from the manufacturer. While it meets all technical specifications and remains electrically compatible, Panasonic does not recommend its use in new product designs. It is suitable only for replacement or maintenance of existing assemblies.

Q: Can I use a 0.75W rated substitute in a circuit designed for 0.667W?

A: Yes. The 0.75W rating exceeds the original specification, providing additional thermal margin. The substitute will operate safely in any circuit designed for the original 0.667W component, provided all other electrical parameters (resistance, tolerance, temperature coefficient) remain within specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, matching the original RC5025F51R1CS component.

Q: What is MSL 1 rating and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts, including the original and substitutes, carry MSL 1 rating, ensuring consistent handling and storage procedures across all alternatives.