RMCS1206FT20K0 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT20K0 is a 20 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor operates across -55°C to 155°C and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently active in production with 763 units in stock.

Substitute parts are necessary when the RMCS1206FT20K0 becomes unavailable, when design requirements demand automotive qualification (AEC-Q200), or when enhanced features such as moisture resistance or pulse withstanding capability are required for specific applications.

Key Parameters

Parameter	Value
Resistance	20 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
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Resistance Value: Must be 20 kOhms
Tolerance: Must be ±1%
Package / Case: Must be 1206 (3216 Metric)
Composition: Must be Thick Film
Temperature Coefficient: Must be ±100ppm/°C
Operating Temperature Range: Must be -55°C ~ 155°C
Number of Terminations: Must be 2
Moisture Sensitivity Level: Must be 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in power rating (0.25W vs 0.75W), feature set (anti-sulfur, automotive AEC-Q200, moisture resistant, pulse withstanding), and compliance certifications (RoHS status, REACH status) do not disqualify substitution but indicate application-specific suitability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package / Case	Temperature Coefficient	Operating Temperature	Composition	RoHS Status	Product Status
RMCS1206FT20K0	Stackpole Electronics Inc	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
RMCF1206FT20K0	Stackpole Electronics Inc	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
AC1206FR-0720KL	YAGEO	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
CR1206-FX-2002ELF	Bourns Inc.	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
CRCW120620K0FKEA	Vishay Dale	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
CRCW120620K0FKEAHP	Vishay Dale	20 kOhms	±1%	0.75W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
CRCW120620K0FKTA	Vishay Dale	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	RoHS non-compliant	Active
ERJ-8ENF2002V	Panasonic Electronic Components	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Not For New Designs
KTR18EZPF2002	Rohm Semiconductor	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active
RC1206FR-0720KL	YAGEO	20 kOhms	±1%	0.25W	1206 (3216 Metric)	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3 Compliant	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

RMCF1206FT20K0 (Stackpole Electronics Inc) is the manufacturer-recommended substitute. It maintains identical electrical specifications and package geometry while adding automotive AEC-Q200 qualification. Active product status and ROHS3 compliance make this the preferred choice for applications requiring automotive-grade reliability.

CRCW120620K0FKEA (Vishay Dale) and CRCW120620K0FKTA (Vishay Dale) are automotive AEC-Q200 qualified alternatives with active product status. CRCW120620K0FKEA maintains full ROHS3 compliance, while CRCW120620K0FKTA is RoHS non-compliant and REACH affected, limiting its use in regulated applications.

Secondary Substitutes (Active, General Purpose)

AC1206FR-0720KL (YAGEO), CR1206-FX-2002ELF (Bourns Inc.), KTR18EZPF2002 (Rohm Semiconductor), and RC1206FR-0720KL (YAGEO) are all active products meeting core electrical and mechanical parameters. AC1206FR-0720KL and KTR18EZPF2002 carry AEC-Q200 automotive qualification. All maintain ROHS3 compliance and unlimited moisture sensitivity rating.

Legacy Substitute (Not Recommended for New Designs)

ERJ-8ENF2002V (Panasonic Electronic Components) meets all electrical and mechanical substitution criteria and carries AEC-Q200 qualification. However, its "Not For New Designs" status disqualifies it from new product development. Existing designs using this part may continue with it, but migration to active alternatives is recommended.

Higher Power Alternative

CRCW120620K0FKEAHP (Vishay Dale) provides 0.75W power rating versus the standard 0.25W. This higher power variant is suitable only when increased power dissipation capability is required. Mechanical dimensions remain within 1206 package specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCS1206FT20K0 with any of these parts without circuit redesign?

A: Yes. All listed substitutes maintain the core electrical parameters (20 kOhms ±1%, ±100ppm/°C, -55°C to 155°C) and 1206 package geometry. Direct PCB footprint compatibility is assured. Feature differences (anti-sulfur, automotive qualification, moisture resistance, pulse withstanding) do not affect basic substitution eligibility but may provide additional benefits for specific applications.

Q: What is the difference between RMCS1206FT20K0 and RMCF1206FT20K0?

A: Both are Stackpole Electronics Inc products with identical electrical specifications and 1206 package. RMCF1206FT20K0 adds automotive AEC-Q200 qualification and is the manufacturer-recommended substitute. RMCS1206FT20K0 features anti-sulfur composition. For new automotive designs, RMCF1206FT20K0 is preferred.

Q: Are there packaging differences between substitutes?

A: Packaging format varies. RMCS1206FT20K0, RMCF1206FT20K0, AC1206FR-0720KL, CRCW120620K0FKEA, CRCW120620K0FKEAHP, ERJ-8ENF2002V, and KTR18EZPF2002 are supplied in Tape & Reel (TR). CRCW120620K0FKTA, CR1206-FX-2002ELF, and RC1206FR-0720KL are supplied in Cut Tape (CT) & Digi-Reel. Packaging format does not affect electrical performance or PCB assembly compatibility.

Q: Which substitute should I use for automotive applications?

A: RMCF1206FT20K0, AC1206FR-0720KL, CRCW120620K0FKEA, CRCW120620K0FKTA, ERJ-8ENF2002V, and KTR18EZPF2002 all carry AEC-Q200 automotive qualification. RMCF1206FT20K0 is the manufacturer-recommended choice. CRCW120620K0FKEA is preferred if full ROHS3 compliance is required. ERJ-8ENF2002V is not recommended for new designs despite AEC-Q200 status.

Q: Can I use CRCW120620K0FKEAHP as a direct substitute?

A: CRCW120620K0FKEAHP is electrically and mechanically compatible but provides 0.75W power rating instead of 0.25W. Use this part only when increased power dissipation is required. In standard 0.25W applications, it functions correctly but represents over-specification.

Q: What does "Not For New Designs" mean for ERJ-8ENF2002V?

A: This designation indicates the manufacturer is discontinuing or has discontinued active promotion of this part. While it meets all substitution criteria and remains available in inventory, new product designs should select from active alternatives such as RMCF1206FT20K0, CRCW120620K0FKEA, or KTR18EZPF2002.

Q: Are all substitutes ROHS3 compliant?

A: No. CRCW120620K0FKTA is RoHS non-compliant and REACH affected. All other listed substitutes are ROHS3 compliant and REACH unaffected. For applications subject to RoHS or REACH regulations, exclude CRCW120620K0FKTA.

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