RC5025F38R3CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F38R3CS is a 38.3 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 currently in stock with 1077 pieces available.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package form factor. The primary substitute listed is the ERJ-12SF38R3U from Panasonic Electronic Components, which shares identical resistance value, tolerance, and package dimensions while offering increased power rating and automotive qualification.

Substiute Parts

RC5025F38R3CS

Samsung Electro-MechanicsIn Stock: 1103RC5025F38R3CS Datasheet

Current PartRFQ

ERJ-12SF38R3U

Panasonic Electronic ComponentsIn Stock: 45919ERJ-12SF38R3U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F38R3CS is determined by strict adherence to the following parameters:

Critical Matching Parameters:

• Resistance value: 38.3 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 2010 (5025 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)

Allowable Variation Parameters:

• Power Rating: Equal to or greater than 0.667W
• Height - Seated (Max): Within component assembly clearance limits
• Packaging format: May differ (Tape & Reel vs. bulk)
• Product Status: May differ based on application requirements
• Certifications: May include additional qualifications (e.g., AEC-Q200)

The ERJ-12SF38R3U qualifies as a substitute because it maintains all critical matching parameters while offering a higher power rating (0.75W vs. 0.667W) and includes automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC5025F38R3CS): Select the RC5025F38R3CS for new designs requiring an active product status with standard industrial compliance. This component is currently in production and carries Active product status, ensuring long-term availability and supply chain stability. It meets ROHS3 and REACH requirements for general industrial applications.

Substitute Selection (ERJ-12SF38R3U): The ERJ-12SF38R3U is suitable as a substitute when:

• Higher power dissipation margin is required (0.75W vs. 0.667W)
• Automotive-grade reliability is specified (AEC-Q200 qualification)
• Existing inventory of the primary part is unavailable

Note that the ERJ-12SF38R3U carries "Not For New Designs" status, indicating it is maintained for legacy applications and existing designs only. This status does not affect its technical compatibility with the RC5025F38R3CS but indicates manufacturer support prioritization.

Both components maintain identical electrical performance within the specified tolerance and operating temperature range. The 0.002" (0.04mm) height difference is negligible for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF38R3U be used as a direct replacement for RC5025F38R3CS in new designs?

A: The ERJ-12SF38R3U is electrically and mechanically compatible with the RC5025F38R3CS. However, it carries "Not For New Designs" status. For new designs, the RC5025F38R3CS is the recommended selection. The ERJ-12SF38R3U is appropriate for legacy design updates or when automotive AEC-Q200 qualification is required.

Q: What does the 2010 (5025 Metric) package designation mean?

A: The 2010 package is a surface mount chip resistor with dimensions of 0.197" length by 0.098" width (5.00mm x 2.50mm). The metric designation 5025 refers to the same package using millimeter measurements. Both RC5025F38R3CS and ERJ-12SF38R3U use this identical package form factor.

Q: Are there differences in power dissipation between the two parts?

A: The RC5025F38R3CS is rated for 0.667W (2/3W), while the ERJ-12SF38R3U is rated for 0.75W (3/4W). The ERJ-12SF38R3U provides approximately 12% higher power handling capacity. In applications where the RC5025F38R3CS operates near its power limit, the ERJ-12SF38R3U offers additional thermal margin.

Q: Do both parts meet the same environmental and compliance standards?

A: Both components are ROHS3 Compliant and REACH Unaffected. The ERJ-12SF38R3U includes additional AEC-Q200 automotive qualification. Both maintain Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the significance of the ±100ppm/°C temperature coefficient?

A: The temperature coefficient of ±100ppm/°C indicates the maximum resistance change per degree Celsius across the operating temperature range of -55°C to 155°C. Both parts share this identical specification, ensuring equivalent temperature stability performance.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, the RC5025F38R3CS and ERJ-12SF38R3U are mechanically and electrically interchangeable in existing designs. The 0.002" (0.04mm) height difference is within standard PCB assembly tolerances and does not require design modification.