RC3216F4121CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F4121CS is a 4.12 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 918 pieces in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct circuit board compatibility.

Substiute Parts

RC3216F4121CS

Samsung Electro-MechanicsIn Stock: 965RC3216F4121CS Datasheet

Current PartRFQ

RC1206FR-074K12L

YAGEOIn Stock: 15835RC1206FR-074K12L Datasheet

DirectRFQ

CRCW12064K12FKEA

Vishay DaleIn Stock: 8347CRCW12064K12FKEA Datasheet

SimilarRFQ

ERJ-8ENF4121V

Panasonic Electronic ComponentsIn Stock: 121337ERJ-8ENF4121V Datasheet

SimilarRFQ

MCR18ERTF4121

Rohm SemiconductorIn Stock: 3512MCR18ERTF4121 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following 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
• RoHS compliance: ROHS3
• MSL rating: 1 (Unlimited)

Acceptable Variations:

• Manufacturer identity (different suppliers)
• Packaging format (Tape & Reel vs. Cut Tape)
• Physical dimensions within tolerance (length 3.05-3.20mm, width 1.55-1.60mm, height 0.60-0.70mm)
• Product status (Active or Discontinued at distributor)
• Additional certifications (AEC-Q200 automotive rating is compatible but not required)

All identified substitutes meet these criteria and are electrically and mechanically interchangeable with the RC3216F4121CS.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Production Status):

RC1206FR-074K12L (YAGEO) and CRCW12064K12FKEA (Vishay Dale) are the preferred substitutes. Both are in active production with substantial inventory availability. YAGEO's RC1206FR-074K12L offers the highest inventory level (15754 pieces) and is suitable for general applications. Vishay Dale's CRCW12064K12FKEA includes AEC-Q200 automotive qualification, making it appropriate for automotive or high-reliability applications requiring additional environmental testing certification.

Secondary Substitutes (Limited Production Status):

ERJ-8ENF4121V (Panasonic) carries "Not For New Designs" status and should be used only for legacy system maintenance or repair applications where the original part specification is mandatory. MCR18ERTF4121 (Rohm) is discontinued at the primary distributor and should be considered only when existing inventory is available and no other alternatives are viable.

Selection Criteria:

• For new designs: Select RC1206FR-074K12L or CRCW12064K12FKEA
• For automotive applications: Select CRCW12064K12FKEA (AEC-Q200 rated)
• For high-volume production: Select based on distributor lead time and pricing
• For legacy support: ERJ-8ENF4121V or MCR18ERTF4121 only if original part is unavailable

All substitutes maintain identical electrical performance and mechanical compatibility with the RC3216F4121CS.

Frequently Asked Questions (FAQ)

Q: Can RC1206FR-074K12L replace RC3216F4121CS directly on the PCB?

A: Yes. Both components share identical 1206 (3216 Metric) package dimensions, footprint, and electrical specifications (4.12 kOhms ±1%, 0.25W, -55°C to 155°C). No PCB redesign is required.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape (CT) is supplied in shorter tape segments for manual handling or lower-volume applications. Both formats contain identical components; packaging format selection depends on assembly process requirements.

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

A: This designation indicates the manufacturer (Panasonic) has discontinued active development and recommends alternative parts for new product designs. The component remains functionally equivalent and may be used for maintenance, repair, or legacy system support where existing inventory exists.

Q: Does CRCW12064K12FKEA's AEC-Q200 rating affect compatibility?

A: No. AEC-Q200 is an additional automotive qualification that exceeds the base specification. A part with AEC-Q200 certification is fully compatible with applications requiring standard industrial specifications and adds no incompatibility.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All identified substitutes carry ROHS3 compliance certification, matching the RC3216F4121CS environmental and regulatory requirements.

Q: What is MSL 1 (Unlimited) and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and requires no special moisture-controlled storage or baking procedures before soldering. All substitutes share this rating, ensuring identical handling requirements.

Q: Can I mix different manufacturers' parts in the same assembly?

A: Yes. All substitutes meet identical electrical and mechanical specifications. Mixed-manufacturer assemblies are acceptable from a functional and reliability standpoint. Verify with your quality assurance process if manufacturer traceability requirements apply.

Q: Which substitute has the best availability?

A: ERJ-8ENF4121V (Panasonic) shows the highest inventory level at 121291 pieces. However, this part carries "Not For New Designs" status. For active production, RC1206FR-074K12L (YAGEO) with 15754 pieces is the recommended choice.