RCS3216F4123CS Equivalent & Substitute Parts

Part Overview

The RCS3216F4123CS is a 412 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 maintains Active product status with 927 pieces currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and compliance certifications to ensure direct functional interchangeability in circuit applications.

Key Parameters

Parameter	Value
Resistance	412 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F4123CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (412 kOhms), tolerance (±1%), and power rating (0.25W) must match exactly. Temperature coefficient (±100ppm/°C) and operating temperature range (-55°C ~ 155°C) establish thermal performance boundaries.

Mechanical Compatibility: Package type (1206 / 3216 Metric) and number of terminations (2) ensure physical fit and solderability on printed circuit boards.

Regulatory Compliance: RoHS3 compliance and MSL Level 1 classification are mandatory for environmental and moisture handling consistency.

Composition: Thick film construction maintains electrical performance characteristics across the specified temperature range.

All identified substitute parts meet these criteria without exception. Variations in height-seated dimensions, packaging format (Tape & Reel), and supplementary features (anti-sulfur, automotive AEC-Q200 certification) do not affect functional substitutability but may influence procurement and application-specific requirements.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Composition	MSL	RoHS Status	Product Status
RCS3216F4123CS	Samsung Electro-Mechanics	412 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Thick Film	1	ROHS3	Active
CR1206-FX-4123ELF	Bourns Inc.	412 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Thick Film	1	ROHS3	Active
CRCW1206412KFKEA	Vishay Dale	412 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Thick Film	1	ROHS3	Active
ERJ-8ENF4123V	Panasonic Electronic Components	412 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Thick Film	1	ROHS3	Not For New Designs
RC1206FR-07412KL	YAGEO	412 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Thick Film	1	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

CR1206-FX-4123ELF (Bourns Inc.), CRCW1206412KFKEA (Vishay Dale), and RC1206FR-07412KL (YAGEO) are recommended as primary equivalents. All three maintain Active product status, ensuring long-term availability and supply chain stability. CRCW1206412KFKEA includes automotive AEC-Q200 certification, suitable for applications requiring automotive-grade reliability. CR1206-FX-4123ELF and RC1206FR-07412KL provide moisture-resistant thick film construction consistent with the main part specification.

Secondary Substitute (Legacy Status):

ERJ-8ENF4123V (Panasonic Electronic Components) meets all electrical and mechanical equivalence criteria and carries AEC-Q200 automotive certification. However, this part is designated "Not For New Designs," indicating Panasonic has discontinued active development. Use is restricted to replacement or maintenance applications where existing inventory exists.

Compliance Verification:

All substitute parts are ROHS3 compliant and MSL Level 1 classified, matching the environmental and moisture handling requirements of the main part. REACH status is unaffected across all options.

Frequently Asked Questions (FAQ)

Q: Can CR1206-FX-4123ELF replace RCS3216F4123CS in existing designs?

A: Yes. Both parts share identical electrical specifications (412 kOhms ±1%, 0.25W), operate across -55°C to 155°C, and use 1206 package with 2 terminations. Physical dimensions are equivalent within manufacturing tolerances. Substitution is direct.

Q: What is the difference between CRCW1206412KFKEA and other substitutes?

A: CRCW1206412KFKEA includes automotive AEC-Q200 certification, indicating qualification for automotive applications with enhanced reliability testing. Electrical and mechanical specifications remain identical to other substitutes. Selection depends on application requirements.

Q: Why is ERJ-8ENF4123V marked "Not For New Designs"?

A: This designation indicates Panasonic has transitioned this part to end-of-life status and no longer recommends it for new circuit designs. Existing inventory may be used for replacement or maintenance. For new designs, select from Active-status alternatives.

Q: Are there dimensional differences between substitute parts?

A: All parts conform to 1206 (3216 Metric) package specifications. Height-seated dimensions vary slightly (0.024" to 0.030" maximum), but these variations fall within standard PCB assembly tolerances and do not affect solderability or circuit performance.

Q: Do all substitutes have the same moisture sensitivity level?

A: Yes. All parts are classified MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Standard component storage practices apply.

Q: Which substitute offers the best inventory availability?

A: RC1206FR-07412KL (YAGEO) has 31,551 pieces in stock. CR1206-FX-4123ELF (Bourns) has 75,780 pieces available. Both provide robust supply for immediate procurement needs.

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