RC3216F4021CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F4021CS is a 4.02 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 status with 1146 pieces in stock inventory.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value	Substitution Relevance
Resistance	4.02 kOhms	Critical - must match exactly
Tolerance	±1%	Critical - must match exactly
Power Rating	0.25W (1/4W)	Critical - minimum requirement; higher ratings acceptable
Package / Case	1206 (3216 Metric)	Critical - physical and electrical compatibility
Composition	Thick Film	Critical - electrical characteristics and reliability
Temperature Coefficient	±100ppm/°C	Critical - temperature stability
Operating Temperature Range	-55°C to 155°C	Critical - thermal performance envelope
Moisture Resistance	Yes	Important - environmental protection
RoHS Status	ROHS3 Compliant	Important - regulatory compliance
MSL Rating	1 (Unlimited)	Important - handling and storage

Substitute Part Grouping Explanation

Substitute parts are classified based on electrical and mechanical compatibility with the RC3216F4021CS. All identified substitutes maintain the core electrical specifications: 4.02 kOhms resistance, ±1% tolerance, 1206 package, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range.

Substitution Logic:

Direct Equivalents share identical electrical and mechanical specifications with the main part, differing only in manufacturer and packaging format.

Upgrade Substitutes provide enhanced features (automotive AEC-Q200 qualification) while maintaining or exceeding the original electrical performance.

Similar Substitutes offer equivalent electrical performance with variations in power rating, automotive qualification, or product lifecycle status. Higher power ratings (0.5W, 0.75W) are acceptable upgrades for the 0.25W requirement.

Key Determining Parameters:

Resistance value: 4.02 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Power rating: minimum 0.25W (higher ratings acceptable)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature: -55°C to 155°C (exact match required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	Product Status	Inventory
RC3216F4021CS	Samsung Electro-Mechanics	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active	1146
CR1206-FX-4021ELF	Bourns Inc.	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active	44100
RC1206FR-074K02L	YAGEO	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active	340248
AC1206FR-074K02L	YAGEO	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	Active	10132
CRCW12064K02FKEA	Vishay Dale	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active	24081
CRCW12064K02FKEAHP	Vishay Dale	4.02 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	Active	57620
CRCW12064K02FKTA	Vishay Dale	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS non-compliant	Active	5928
ERJ-8ENF4021V	Panasonic Electronic Components	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Not For New Designs	105364
ESR18EZPF4021	Rohm Semiconductor	4.02 kΩ	±1%	0.5	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	Active	15561
RMCF1206FT4K02	Stackpole Electronics Inc	4.02 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active	167530

Engineering Selection Recommendations

For Standard Industrial Applications (ROHS3 Compliant, Non-Automotive):

RC1206FR-074K02L (YAGEO) is the primary substitute, offering highest inventory availability (340,248 units) with identical electrical specifications and ROHS3 compliance. CR1206-FX-4021ELF (Bourns Inc.) provides an alternative with 44,100 units in stock.

For Automotive Applications (AEC-Q200 Qualified):

AC1206FR-074K02L (YAGEO) is recommended for standard automotive designs requiring AEC-Q200 qualification with 10,132 units available. RMCF1206FT4K02 (Stackpole Electronics Inc) offers the highest inventory (167,530 units) among automotive-qualified options. CRCW12064K02FKEA (Vishay Dale) provides an alternative with 24,081 units.

For Enhanced Power Dissipation Requirements:

CRCW12064K02FKEAHP (Vishay Dale) and ESR18EZPF4021 (Rohm Semiconductor) provide 0.75W and 0.5W ratings respectively, both with pulse withstanding capability and AEC-Q200 qualification. These are suitable when thermal margin is required beyond the 0.25W specification.

Avoid for New Designs:

ERJ-8ENF4021V (Panasonic Electronic Components) carries "Not For New Designs" status despite high inventory (105,364 units) and should not be selected for new product development.

Compliance Consideration:

CRCW12064K02FKTA (Vishay Dale) is RoHS non-compliant and REACH affected; selection requires explicit regulatory approval for the application.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC3216F4021CS with a part having a different power rating?

A: Yes. The RC3216F4021CS is rated 0.25W. Substitute parts with equal or higher power ratings (0.5W, 0.75W) are electrically compatible and provide additional thermal margin. Lower power ratings are not acceptable.

Q: What is the difference between standard and automotive-qualified substitutes?

A: Automotive-qualified parts (AEC-Q200) meet additional reliability and qualification standards required for automotive applications. Standard industrial parts lack this certification. Selection depends on application requirements; automotive qualification is not necessary for non-automotive designs.

Q: Are all substitute parts physically interchangeable in the 1206 package?

A: All listed substitutes use the 1206 (3216 Metric) package with identical footprint dimensions (0.126" L x 0.063" W / 3.20mm x 1.60mm). Physical interchangeability is confirmed. Minor height variations (0.024" to 0.030" seated height) do not affect PCB assembly compatibility.

Q: Which substitute has the best inventory availability?

A: RC1206FR-074K02L (YAGEO) offers the highest inventory at 340,248 units for standard applications. RMCF1206FT4K02 (Stackpole Electronics Inc) provides the highest availability (167,530 units) among automotive-qualified options.

Q: Can I use ERJ-8ENF4021V as a substitute?

A: ERJ-8ENF4021V meets all electrical and mechanical specifications but carries "Not For New Designs" status from Panasonic Electronic Components. This part is suitable only for legacy design maintenance or repair applications, not for new product development.

Q: What does ROHS3 compliance mean for this resistor?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes maintain ROHS3 compliance except CRCW12064K02FKTA, which is RoHS non-compliant.

Q: Are moisture-resistant features identical across all substitutes?

A: The main part RC3216F4021CS explicitly specifies moisture resistance. Most substitutes maintain this feature. Verify moisture resistance specifications in datasheets for applications requiring environmental protection beyond standard MSL 1 (Unlimited) rating.

Q: What is MSL 1 (Unlimited) rating?

A: MSL 1 indicates Moisture Sensitivity Level 1, the lowest moisture sensitivity classification. Components with this rating have unlimited shelf life and do not require special moisture-control handling during storage or assembly.

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