RCS3216F4121CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F4121CS is a 4.12 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture-resistant characteristics. The part is ROHS3 compliant and suitable for general industrial applications requiring precision resistive elements.

Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements mandate specific manufacturer certifications such as automotive AEC-Q200 qualification or alternative packaging formats.

Substiute Parts

RCS3216F4121CS

Samsung Electro-MechanicsIn Stock: 771RCS3216F4121CS Datasheet

Current PartRFQ

CRCW12064K12FKEA

Vishay DaleIn Stock: 8347CRCW12064K12FKEA Datasheet

SimilarRFQ

ERJ-8ENF4121V

Panasonic Electronic ComponentsIn Stock: 121337ERJ-8ENF4121V Datasheet

SimilarRFQ

MCR18ERTF4121

Rohm SemiconductorIn Stock: 3512MCR18ERTF4121 Datasheet

SimilarRFQ

RC1206FR-074K12L

YAGEOIn Stock: 15835RC1206FR-074K12L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F4121CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.12 kOhms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Package: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

All four substitute parts listed meet these mandatory parameters. Variations exist only in manufacturer-specific features (such as automotive AEC-Q200 certification for certain substitutes), physical dimensions within tolerance, and product status classifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status):

CRCW12064K12FKEA (Vishay Dale) and RC1206FR-074K12L (YAGEO) are recommended as primary substitutes. Both maintain Active product status, ensuring long-term availability and continued manufacturer support. CRCW12064K12FKEA includes AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade reliability. RC1206FR-074K12L provides moisture-resistant thick film construction aligned with the original part's environmental protection features.

Secondary Substitutes (Limited Availability):

ERJ-8ENF4121V (Panasonic) carries AEC-Q200 certification but is classified as Not For New Designs, indicating phase-out status. This part remains suitable for legacy system maintenance or repair applications where existing inventory exists.

MCR18ERTF4121 (Rohm Semiconductor) is Discontinued at DiGi Electronics, limiting procurement viability for new production. This part should be considered only when existing stock is available through alternative distribution channels.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification matching the original RCS3216F4121CS specifications. Selection between substitutes should prioritize product status (Active preferred) and application-specific requirements such as automotive certification needs.

Frequently Asked Questions (FAQ)

Q: Can CRCW12064K12FKEA replace RCS3216F4121CS in any application?

A: Yes. CRCW12064K12FKEA meets all mandatory electrical and mechanical parameters: 4.12 kOhms ±1%, 0.25W power rating, 1206 package, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The AEC-Q200 automotive certification is an additional qualification that does not restrict use in non-automotive applications.

Q: What is the difference between the packaging formats listed?

A: RCS3216F4121CS uses standard packaging (format not specified). CRCW12064K12FKEA, ERJ-8ENF4121V, and RC1206FR-074K12L are supplied in Tape & Reel (TR) format for automated assembly. MCR18ERTF4121 uses Cut Tape (CT) & Digi-Reel® format. All packaging formats contain electrically and mechanically identical components; packaging selection depends on assembly process requirements.

Q: Why is ERJ-8ENF4121V marked "Not For New Designs"?

A: This designation indicates Panasonic has transitioned this part to end-of-life status. While the component remains functionally equivalent and suitable for existing applications, new product designs should specify alternative parts with Active status such as CRCW12064K12FKEA or RC1206FR-074K12L to ensure long-term supply continuity.

Q: Are there physical dimension differences between substitutes?

A: Minor variations exist within manufacturing tolerances. RCS3216F4121CS height is 0.026" (0.66mm). CRCW12064K12FKEA is 0.024" (0.60mm), ERJ-8ENF4121V is 0.028" (0.70mm), MCR18ERTF4121 is 0.026" (0.65mm), and RC1206FR-074K12L is 0.026" (0.65mm). All dimensions remain within 1206 package specifications and do not affect PCB layout or assembly compatibility.

Q: Do all substitutes have identical moisture sensitivity ratings?

A: Yes. All parts including RCS3216F4121CS carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling. Standard component storage practices apply uniformly across all listed parts.

Q: Which substitute offers the best long-term availability?

A: RC1206FR-074K12L (YAGEO) and CRCW12064K12FKEA (Vishay Dale) both maintain Active product status with substantial inventory levels (15,754 and 8,323 pieces respectively). These parts are recommended for new designs requiring assured supply continuity.