Equivalent & Substitute Parts for RCS2012F3921CS

Part Overview

The RCS2012F3921CS is a 3.92 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture-resistant characteristics. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value
Resistance	3.92 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 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

Substitute parts for the RCS2012F3921CS are qualified based on the following criteria:

Electrical Parameters (Must Match):

Resistance value: 3.92 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match):

Package type: 0805 (2012 Metric)
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of terminations: 2

Compliance Parameters (Must Match):

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Unaffected status

All four substitute parts meet these criteria and are therefore direct equivalents suitable for replacement in the same circuit application.

Parameter Comparison

Parameter	RCS2012F3921CS (Samsung)	CRCW08053K92FKEA (Vishay Dale)	ERJ-6ENF3921V (Panasonic)	RC0805FR-073K92L (YAGEO)	RMCF0805FT3K92 (Stackpole)
Resistance	3.92 kOhms	3.92 kOhms	3.92 kOhms	3.92 kOhms	3.92 kOhms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Height - Seated (Max)	0.026" (0.66mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.024" (0.60mm)	0.026" (0.65mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All four substitute parts are qualified equivalents for the RCS2012F3921CS based on matching electrical, mechanical, and compliance specifications. Selection among these alternatives is determined by:

Availability and Lead Time: RMCF0805FT3K92 (Stackpole Electronics Inc) offers the highest inventory level at 131,297 pieces. ERJ-6ENF3921V (Panasonic) provides 63,073 pieces, CRCW08053K92FKEA (Vishay Dale) provides 36,241 pieces, and RC0805FR-073K92L (YAGEO) provides 22,886 pieces.

Automotive Qualification: CRCW08053K92FKEA, ERJ-6ENF3921V, and RMCF0805FT3K92 carry AEC-Q200 automotive qualification. RC0805FR-073K92L does not specify automotive qualification.

Packaging Format: CRCW08053K92FKEA, ERJ-6ENF3921V, and RMCF0805FT3K92 are supplied in Tape & Reel (TR) format. RC0805FR-073K92L is supplied in Cut Tape (CT) & Digi-Reel® format.

Physical Height Variation: Seated height ranges from 0.020" (0.50mm) to 0.028" (0.70mm). All values remain within acceptable PCB assembly tolerances for 0805 package components.

Frequently Asked Questions (FAQ)

Q: Can CRCW08053K92FKEA directly replace RCS2012F3921CS?

A: Yes. CRCW08053K92FKEA meets all electrical specifications (3.92 kOhms ±1%, 0.125W), operates across the same temperature range (-55°C ~ 155°C), uses identical 0805 package dimensions, and maintains ROHS3 compliance and MSL 1 rating. Physical height is 0.020" (0.50mm), which is within PCB assembly tolerance.

Q: What is the difference between ERJ-6ENF3921V and RC0805FR-073K92L?

A: Both components share identical electrical specifications and 0805 package dimensions. ERJ-6ENF3921V carries AEC-Q200 automotive qualification and is supplied in Tape & Reel format with 63,073 pieces in stock. RC0805FR-073K92L does not specify automotive qualification and is supplied in Cut Tape & Digi-Reel® format with 22,886 pieces in stock. Physical height differs: ERJ-6ENF3921V is 0.028" (0.70mm) versus RC0805FR-073K92L at 0.024" (0.60mm).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts (CRCW08053K92FKEA, ERJ-6ENF3921V, RC0805FR-073K92L, RMCF0805FT3K92) are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the original RCS2012F3921CS.

Q: Which substitute offers the best availability?

A: RMCF0805FT3K92 (Stackpole Electronics Inc) provides the highest inventory at 131,297 pieces in stock.

Q: Do all substitutes support the same operating temperature range?

A: Yes. All substitute parts operate across -55°C ~ 155°C with ±100ppm/°C temperature coefficient, identical to the RCS2012F3921CS.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Unlimited) indicates unlimited shelf life without moisture bake-out requirements. All parts, including the original and substitutes, carry this rating.

Q: Can I use RC0805FR-073K92L in automotive applications?

A: RC0805FR-073K92L does not carry AEC-Q200 automotive qualification. For automotive applications, use CRCW08053K92FKEA, ERJ-6ENF3921V, or RMCF0805FT3K92.

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