RCS3216F4321CS Equivalent & Substitute Parts

Part Overview

The RCS3216F4321CS is a 4.32 kOhms ±1% 0.25W (1/4W) chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This thick film resistor features anti-sulfur and moisture-resistant properties, operating across the temperature range of -55°C to 155°C. The part is currently in active production status with 679 pieces available in new original inventory.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative sourcing from qualified manufacturers. All substitute parts listed maintain identical electrical specifications and mechanical compatibility within the 1206 package footprint.

Substiute Parts

RCS3216F4321CS

Samsung Electro-MechanicsIn Stock: 692RCS3216F4321CS Datasheet

Current PartRFQ

CR1206-FX-4321ELF

Bourns Inc.In Stock: 49744CR1206-FX-4321ELF Datasheet

SimilarRFQ

CRCW12064K32FKEA

Vishay DaleIn Stock: 32175CRCW12064K32FKEA Datasheet

SimilarRFQ

ERJ-8ENF4321V

Panasonic Electronic ComponentsIn Stock: 137420ERJ-8ENF4321V Datasheet

SimilarRFQ

RC1206FR-074K32L

YAGEOIn Stock: 31159RC1206FR-074K32L Datasheet

SimilarRFQ

RMCF1206FT4K32

Stackpole Electronics IncIn Stock: 2493RMCF1206FT4K32 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F4321CS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 4.32 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Package: 1206 (3216 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Termination count: 2 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• MSL rating: 1 (Unlimited) (exact match required)

All five substitute parts listed below meet these criteria without exception. Dimensional variations within the 1206 package envelope do not affect functional interchangeability. Differences in features (such as automotive AEC-Q200 qualification or anti-sulfur coating) represent enhancements that do not preclude substitution in non-specialized applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status, Standard Applications):

• CR1206-FX-4321ELF (Bourns Inc.) — 49,690 units in stock
• RC1206FR-074K32L (YAGEO) — 31,117 units in stock
• RMCF1206FT4K32 (Stackpole Electronics Inc.) — 2,391 units in stock
• CRCW12064K32FKEA (Vishay Dale) — 32,144 units in stock

All four parts maintain active production status and full ROHS3 compliance. Selection among these options should be based on availability, lead time, and supply chain requirements.

Conditional Selection (Automotive Applications):

• CRCW12064K32FKEA (Vishay Dale) — AEC-Q200 qualified
• RMCF1206FT4K32 (Stackpole Electronics Inc.) — AEC-Q200 qualified

These parts carry automotive AEC-Q200 qualification and are suitable for automotive-grade applications requiring enhanced reliability standards.

Legacy/Obsolescence Consideration:

• ERJ-8ENF4321V (Panasonic Electronic Components) — Marked "Not For New Designs"

This part carries a "Not For New Designs" status and should be avoided for new product development. It remains available with 137,406 units in stock but is suitable only for sustaining production of existing designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RCS3216F4321CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts match the critical electrical parameters (4.32 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C operating range) and the mechanical package (1206). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between the main part and substitutes in terms of features?

A: The RCS3216F4321CS includes anti-sulfur coating in addition to moisture resistance. The Bourns CR1206-FX-4321ELF and YAGEO RC1206FR-074K32L specify moisture resistance only. The Vishay Dale CRCW12064K32FKEA, Panasonic ERJ-8ENF4321V, and Stackpole RMCF1206FT4K32 include AEC-Q200 automotive qualification. These feature differences do not affect substitution eligibility for standard applications.

Q: Are there dimensional differences between the 1206 packages?

A: Minor dimensional variations exist within the 1206 package specification. The RCS3216F4321CS has a maximum seated height of 0.026" (0.66mm), while substitutes range from 0.024" to 0.030" (0.60mm to 0.75mm). These variations remain within the 1206 package envelope and do not affect PCB layout or assembly compatibility.

Q: Which substitute should I select for new product designs?

A: Select from parts with "Active" product status: CR1206-FX-4321ELF, CRCW12064K32FKEA, RC1206FR-074K32L, or RMCF1206FT4K32. Avoid ERJ-8ENF4321V, which carries "Not For New Designs" status. For automotive applications, prioritize CRCW12064K32FKEA or RMCF1206FT4K32 due to AEC-Q200 qualification.

Q: Do all substitutes carry the same compliance certifications?

A: Yes. All six parts (main part and five substitutes) are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). All share identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications.

Q: What inventory levels should influence my selection?

A: Current inventory levels are: Panasonic ERJ-8ENF4321V (137,406 units), Bourns CR1206-FX-4321ELF (49,690 units), Vishay Dale CRCW12064K32FKEA (32,144 units), YAGEO RC1206FR-074K32L (31,117 units), Stackpole RMCF1206FT4K32 (2,391 units), and Samsung RCS3216F4321CS (679 units). High inventory levels indicate stable supply, though product status should take precedence over inventory quantity for new designs.