RC5025F42R2CS Equivalent & Substitute Parts

Part Overview

The RC5025F42R2CS is a 42.2 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.667W (2/3W) in a 2010 (5025 Metric) package. This component is currently in active production status and features moisture-resistant construction suitable for general industrial applications.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit the use of alternative manufacturers' products with equivalent electrical and mechanical specifications. The RC5025F42R2CS has been identified with one direct substitute option that maintains critical parameter compatibility.

Substiute Parts

RC5025F42R2CS

Samsung Electro-MechanicsIn Stock: 1074RC5025F42R2CS Datasheet

Current PartRFQ

ERJ-12SF42R2U

Panasonic Electronic ComponentsIn Stock: 3211ERJ-12SF42R2U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F42R2CS is determined by strict adherence to the following parameters:

Critical Parameters (Must Match Exactly):

• Resistance value: 42.2 Ohms
• Tolerance: ±1%
• Package / Case: 2010 (5025 Metric)
• Number of Terminations: 2
• Composition: Thick Film

Performance Parameters (Substitute Must Equal or Exceed):

• Power Rating: Minimum 0.667W (substitute may have higher rating)
• Temperature Coefficient: ±100ppm/°C or better
• Operating Temperature Range: Must encompass -55°C ~ 155°C

Compliance Parameters (Must Maintain):

• RoHS3 Compliance
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The ERJ-12SF42R2U qualifies as a direct substitute based on these criteria, with the distinction that it provides a higher power rating (0.75W vs. 0.667W) while maintaining all other critical specifications.

Parameter Comparison

Engineering Selection Recommendations

RC5025F42R2CS (Primary Selection): The RC5025F42R2CS remains the preferred choice for new designs. This component is in active production status, ensuring long-term availability and supply chain stability. It is manufactured by Samsung Electro-Mechanics and carries full RoHS3 compliance with MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling.

ERJ-12SF42R2U (Substitute Selection): The ERJ-12SF42R2U from Panasonic Electronic Components is electrically and mechanically compatible with the RC5025F42R2CS. This substitute provides a higher power rating (0.75W versus 0.667W), which offers additional thermal margin in applications where the main part is specified. However, the ERJ-12SF42R2U carries a "Not For New Designs" status, indicating that Panasonic has discontinued active development for this product line. This substitute is suitable for replacement, repair, or legacy system applications where supply of the primary part is unavailable.

The maximum seated height difference (0.028" versus 0.026") is within typical PCB design tolerances and does not present a mechanical constraint for standard 2010 package footprints.

Both components maintain identical compliance certifications (RoHS3, REACH Unaffected, MSL 1) and identical electrical performance parameters (resistance, tolerance, temperature coefficient, operating temperature range).

Frequently Asked Questions (FAQ)

Q: Can the ERJ-12SF42R2U be used as a direct replacement for the RC5025F42R2CS in existing designs?

A: Yes. The ERJ-12SF42R2U is electrically and mechanically compatible. Both components have identical resistance values (42.2 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and package dimensions (2010 / 5025 Metric). The substitute provides a higher power rating (0.75W vs. 0.667W), which is advantageous. The maximum seated height difference (0.028" vs. 0.026") is negligible for standard PCB applications.

Q: What is the significance of the "Not For New Designs" status on the ERJ-12SF42R2U?

A: This designation indicates that Panasonic has discontinued active development and marketing of this product line. While the component remains functionally equivalent and available in inventory, it is intended for replacement and repair applications rather than incorporation into new product designs. For new designs, the RC5025F42R2CS (Active status) is the recommended selection.

Q: Are there any compliance or certification differences between these two parts?

A: No. Both the RC5025F42R2CS and ERJ-12SF42R2U maintain identical compliance certifications: RoHS3 Compliant, REACH Unaffected, and Moisture Sensitivity Level 1 (Unlimited). Both components are suitable for applications with equivalent regulatory requirements.

Q: Does the higher power rating of the ERJ-12SF42R2U (0.75W vs. 0.667W) affect circuit performance?

A: No. A higher power rating does not alter electrical performance. The substitute will dissipate the same power as the main part under identical circuit conditions. The higher rating provides additional thermal margin and may extend component life in applications operating near the original power specification.

Q: Are the package footprints identical between these two parts?

A: Yes. Both components use the 2010 (5025 Metric) package with identical length (0.197" / 5.00mm) and width (0.098" / 2.50mm). The maximum seated height differs by 0.002" (0.04mm), which is within standard PCB design tolerances and does not require footprint modification.

Q: What inventory status should be considered when selecting between these parts?

A: The RC5025F42R2CS has 988 pieces in stock (Active status), while the ERJ-12SF42R2U has 3155 pieces in stock (Not For New Designs status). For immediate availability, the substitute offers higher inventory levels. For long-term supply assurance, the primary part's active status provides better future availability.