RC3225F6810CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F6810CS is a 681 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope. Alternative sources become necessary for supply chain continuity, inventory availability, or design revision requirements.

Substiute Parts

RC3225F6810CS

Samsung Electro-MechanicsIn Stock: 931RC3225F6810CS Datasheet

Current PartRFQ

CRCW1210681RFKEA

Vishay DaleIn Stock: 6112CRCW1210681RFKEA Datasheet

SimilarRFQ

ERJ-14NF6810U

Panasonic Electronic ComponentsIn Stock: 10538ERJ-14NF6810U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC3225F6810CS is based on the following criteria:

Electrical Equivalence:

• Resistance value: 681 Ohms (exact match required)
• Tolerance: ±1% (no deviation permitted)
• Temperature coefficient: ±100ppm/°C (matching specification)
• Operating temperature range: -55°C ~ 155°C (minimum coverage required)

Mechanical Compatibility:

• Package type: 1210 (3225 Metric) surface mount package (exact match required)
• Composition: Thick film construction (maintains electrical behavior)
• Number of terminations: 2 (standard chip resistor configuration)

Power Rating Consideration:

• Main part: 0.333W (1/3W)
• Substitute parts: 0.5W (1/2W) or higher
• Higher power ratings are acceptable as they provide thermal margin and do not affect circuit performance in applications rated for 0.333W

Regulatory and Compliance:

• RoHS3 compliance required
• MSL 1 classification acceptable
• REACH Unaffected status maintained

Parameter Comparison

Engineering Selection Recommendations

CRCW1210681RFKEA (Vishay Dale) - Primary Substitute

This part maintains Active product status and provides full electrical and mechanical compatibility with the RC3225F6810CS. The 0.5W power rating exceeds the original 0.333W specification, providing additional thermal margin. Automotive AEC-Q200 qualification indicates enhanced reliability screening. RoHS3 compliance and MSL 1 rating match the original part. Dimensional variations (width 2.50mm vs 2.55mm, height 0.60mm vs 0.66mm) remain within standard PCB layout tolerances for 1210 package footprints.

ERJ-14NF6810U (Panasonic Electronic Components) - Secondary Substitute

This part meets all electrical specifications and maintains 1210 package compatibility. However, the product status is classified as "Not For New Designs," indicating this part is in mature or end-of-life phase. The 0.5W power rating and AEC-Q200 automotive qualification provide equivalent performance characteristics. This part is suitable for replacement or repair applications where existing inventory exists, but should not be selected for new product designs. Maximum seated height of 0.028" (0.70mm) is slightly elevated compared to alternatives.

Selection Criteria Summary:

• For new designs: CRCW1210681RFKEA (Active status, full compliance)
• For replacement/repair: ERJ-14NF6810U (acceptable if inventory available, despite Not For New Designs status)
• All substitutes maintain RoHS3 compliance and MSL 1 classification
• All substitutes support the full -55°C ~ 155°C operating temperature range

Frequently Asked Questions (FAQ)

Q: Can CRCW1210681RFKEA replace RC3225F6810CS in existing designs?

A: Yes. Both parts share identical resistance (681 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The 1210 package footprint is identical. The higher power rating (0.5W vs 0.333W) does not create compatibility issues; it provides additional thermal capacity. Dimensional differences (width and height) are within standard PCB layout tolerances for this package class.

Q: Why is ERJ-14NF6810U marked "Not For New Designs"?

A: This designation indicates the part is in mature production phase with potential future discontinuation. Panasonic maintains supply for existing applications but does not recommend this part for new product development. For new designs, CRCW1210681RFKEA is the preferred substitute.

Q: Are there any thermal or electrical performance differences between these substitutes?

A: All three parts share identical electrical specifications: 681 Ohms ±1%, ±100ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. The substitute parts (CRCW1210681RFKEA and ERJ-14NF6810U) have higher power ratings (0.5W vs 0.333W), which improves thermal performance but does not alter electrical behavior in circuits designed for 0.333W operation.

Q: Do dimensional variations affect PCB layout?

A: Dimensional variations are minimal and within standard 1210 package tolerances. Width difference (2.50mm vs 2.55mm) and height difference (0.60mm to 0.70mm vs 0.66mm) do not require PCB footprint redesign. Standard 1210 land patterns accommodate all three parts without modification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. RC3225F6810CS, CRCW1210681RFKEA, and ERJ-14NF6810U are all ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are REACH Unaffected and classified under ECCN EAR99.

Q: What is the difference between 1/3W and 1/2W power ratings?

A: The 1/3W (0.333W) rating of the original part indicates maximum continuous power dissipation under specified conditions. The 1/2W (0.5W) rating of substitute parts indicates higher maximum power dissipation capability. In applications where the original 0.333W part operates within its power budget, the 0.5W substitute will operate at lower temperature rise, extending component life and improving reliability margins.

Q: Can I use ERJ-14NF6810U for new product designs?

A: Not recommended. Although ERJ-14NF6810U meets all electrical and mechanical specifications, its "Not For New Designs" status indicates Panasonic's position on future availability and support. CRCW1210681RFKEA is the appropriate choice for new designs due to Active product status and confirmed long-term availability.