RC3225F3161CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F3161CS is a 3.16 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This component is rated for 0.333W (1/3W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the same package footprint and core electrical specifications. Alternative sources become necessary for supply chain continuity, extended lead time mitigation, or when specific application requirements (such as automotive qualification) are beneficial.

Substiute Parts

RC3225F3161CS

Samsung Electro-MechanicsIn Stock: 880RC3225F3161CS Datasheet

Current PartRFQ

CRCW12103K16FKEA

Vishay DaleIn Stock: 15686CRCW12103K16FKEA Datasheet

SimilarRFQ

ERJ-14NF3161U

Panasonic Electronic ComponentsIn Stock: 858ERJ-14NF3161U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F3161CS is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Resistance value: 3.16 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 1210 (3225 Metric) footprint (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C minimum (exact match or better required)
• Termination Count: 2 (exact match required)
• RoHS Compliance: ROHS3 (exact match required)

Secondary Consideration:

• Power Rating: The main part is rated 0.333W (1/3W). Substitute parts with equal or higher power ratings (0.5W or greater) are acceptable as they provide equivalent or superior thermal performance within the same package envelope.

All identified substitutes meet these criteria and maintain full electrical and mechanical compatibility with the RC3225F3161CS.

Parameter Comparison

Engineering Selection Recommendations

CRCW12103K16FKEA (Vishay Dale) is the primary substitute for the RC3225F3161CS. This part maintains Active product status, carries ROHS3 compliance, and includes AEC-Q200 automotive qualification. The 0.5W power rating provides thermal margin above the original 0.333W specification while maintaining identical package dimensions and electrical characteristics. Packaging is supplied as Tape & Reel (TR) format with 15,671 units in current inventory.

ERJ-14NF3161U (Panasonic Electronic Components) is a secondary substitute option. While this part meets all electrical and mechanical substitution criteria and carries AEC-Q200 automotive qualification, it is designated as "Not For New Designs" by the manufacturer. This status indicates the part is in mature/declining phase and should be considered only for legacy system maintenance or when supply of active alternatives is constrained. Current inventory is 762 units in Tape & Reel format.

Both substitutes are electrically and mechanically interchangeable with the RC3225F3161CS within the specified operating parameters. Selection between them should prioritize the Vishay Dale CRCW12103K16FKEA due to its Active product status and superior inventory availability.

Frequently Asked Questions (FAQ)

Q: Can CRCW12103K16FKEA replace RC3225F3161CS in existing designs?

A: Yes. The CRCW12103K16FKEA is a direct substitute. Both parts share identical resistance (3.16 kOhms), tolerance (±1%), package footprint (1210/3225 Metric), composition (Thick Film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The higher power rating (0.5W vs. 0.333W) provides additional thermal capability without affecting electrical performance or physical fit.

Q: What is the difference between the 0.333W and 0.5W power ratings?

A: Power rating indicates maximum continuous power dissipation capability. The 0.5W rating of substitute parts exceeds the 0.333W specification of the original part. In applications where the RC3225F3161CS dissipates 0.333W or less, the 0.5W-rated substitutes operate with thermal margin and are fully compatible. No circuit redesign is required.

Q: Are the physical dimensions identical between all three parts?

A: The package footprints are identical (1210/3225 Metric). Length and width dimensions are 0.126" × 0.100" (3.20mm × 2.55mm) for the RC3225F3161CS and 0.126" × 0.098" (3.20mm × 2.50mm) for both substitutes. Height varies slightly: RC3225F3161CS is 0.026" (0.66mm) maximum, CRCW12103K16FKEA is 0.024" (0.60mm) maximum, and ERJ-14NF3161U is 0.028" (0.70mm) maximum. These variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Why is ERJ-14NF3161U marked "Not For New Designs"?

A: This designation indicates the part is in the mature or declining phase of its product lifecycle. Panasonic continues to support existing inventory and applications but does not recommend this part for new circuit designs. For new applications, CRCW12103K16FKEA is the preferred substitute.

Q: Do all three parts meet automotive standards?

A: The RC3225F3161CS does not carry automotive qualification. Both CRCW12103K16FKEA and ERJ-14NF3161U are AEC-Q200 qualified, making them suitable for automotive applications. If automotive qualification is required, either substitute is acceptable; however, CRCW12103K16FKEA is preferred due to Active status.

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 (Unlimited) is the lowest moisture sensitivity level. These parts require no special moisture control during storage, handling, or assembly. Standard warehouse conditions are sufficient, and no baking or desiccant packaging is required prior to soldering.