RCS3216F6651CS Equivalent & Substitute Parts

Part Overview

The RCS3216F6651CS is a 6.65 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This thick film resistor features anti-sulfur and moisture-resistant properties, operating across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when they share identical electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, footprint dimensions, termination count) with the main part. Equivalent components enable design flexibility, supply chain optimization, and continuity when primary sources are unavailable.

Substiute Parts

RCS3216F6651CS

Samsung Electro-MechanicsIn Stock: 955RCS3216F6651CS Datasheet

Current PartRFQ

CR1206-FX-6651ELF

Bourns Inc.In Stock: 25511CR1206-FX-6651ELF Datasheet

SimilarRFQ

CRCW12066K65FKEA

Vishay DaleIn Stock: 12400CRCW12066K65FKEA Datasheet

SimilarRFQ

ERJ-8ENF6651V

Panasonic Electronic ComponentsIn Stock: 48868ERJ-8ENF6651V Datasheet

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RC1206FR-076K65L

YAGEOIn Stock: 22896RC1206FR-076K65L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F6651CS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 6.65 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 0.25W / 1/4W (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: -55°C ~ 155°C (exact match)

Mechanical Equivalence Requirements:

• Package type: 1206 (3216 Metric) (exact match)
• Number of terminations: 2 (exact match)
• Footprint compatibility: 0.126" L x 0.063" W nominal dimensions

Compliance Requirements:

• RoHS3 compliance (mandatory)
• MSL 1 rating (Unlimited moisture sensitivity)

All four substitute parts listed meet these criteria. Variations in height-seated maximum and minor dimensional tolerances do not affect functional substitution within standard PCB assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

CR1206-FX-6651ELF (Bourns Inc.) and RC1206FR-076K65L (YAGEO) are recommended as primary equivalents. Both maintain Active product status, ensuring long-term availability and manufacturing support. CR1206-FX-6651ELF offers moisture-resistant thick film construction. RC1206FR-076K65L provides moisture-resistant properties with slightly reduced seated height (0.026" vs. 0.030").

CRCW12066K65FKEA (Vishay Dale) is suitable for applications requiring automotive AEC-Q200 qualification. This part carries the lowest seated height (0.024") and is appropriate for space-constrained designs.

Secondary Substitute (Legacy Status):

ERJ-8ENF6651V (Panasonic Electronic Components) carries "Not For New Designs" product status. This part is electrically and mechanically equivalent but should be used only for replacement or repair of existing assemblies. New designs should prioritize active-status alternatives.

Compliance Considerations:

All substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) ratings, matching the original part's environmental and moisture handling requirements. No additional qualification or testing is required based on compliance certifications alone.

Frequently Asked Questions (FAQ)

Q: Can CR1206-FX-6651ELF replace RCS3216F6651CS directly on the PCB?

A: Yes. Both parts share identical electrical specifications (6.65 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C) and 1206 package footprint. The maximum seated height difference (0.030" vs. 0.026") is within standard PCB assembly tolerances and does not affect placement or soldering.

Q: Why is ERJ-8ENF6651V marked "Not For New Designs"?

A: This designation indicates the manufacturer (Panasonic) has discontinued active development and support for this product line. While electrically and mechanically equivalent, it should be reserved for maintenance or repair of existing products. New designs should use CR1206-FX-6651ELF, CRCW12066K65FKEA, or RC1206FR-076K65L.

Q: What is the difference between the moisture-resistant and automotive AEC-Q200 variants?

A: CR1206-FX-6651ELF and RC1206FR-076K65L feature moisture-resistant thick film construction for general industrial applications. CRCW12066K65FKEA and ERJ-8ENF6651V carry automotive AEC-Q200 qualification, indicating compliance with automotive reliability and environmental stress testing standards. AEC-Q200 parts are suitable for automotive and high-reliability applications.

Q: Are there any dimensional constraints I should consider when substituting?

A: All parts use the 1206 (3216 Metric) package with nominal footprint dimensions of 0.126" L x 0.063" W. Seated height varies between 0.024" and 0.030" maximum. For standard PCB designs with typical component clearances, these variations are not restrictive. Space-constrained applications should prioritize CRCW12066K65FKEA (0.024" height).

Q: Do all substitute parts have the same packaging format?

A: The main part (RCS3216F6651CS) is supplied in standard packaging. All four substitute parts are supplied in Tape & Reel (TR) format, which is standard for high-volume SMD assembly. Confirm packaging requirements with your procurement process.

Q: Are there any temperature or environmental performance differences between substitutes?

A: All parts operate across -55°C to 155°C with ±100ppm/°C temperature coefficient. Performance is equivalent across the specified operating range. Moisture sensitivity is MSL 1 (Unlimited) for all parts, indicating no special storage or handling requirements.