RMCS1206FT1M00 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT1M00 is a 1 MOhm ±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. The part is currently active in production with 734 units in stock.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, when design requirements demand specific certifications such as AEC-Q200 automotive qualification, or when enhanced features such as moisture resistance or high voltage capability are required for application reliability.

Key Parameters

Parameter	Value
Resistance	1 MOhms
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 for the RMCS1206FT1M00 is determined by strict equivalence across the following parameters: resistance value (1 MOhms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and termination count (2). All substitute parts listed maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories based on product status and feature enhancements:

MFR Recommended Substitutes maintain the core specifications with added certifications or enhanced features such as automotive AEC-Q200 qualification, anti-sulfur properties, moisture resistance, or high voltage capability. These parts are suitable for direct replacement in applications where the additional features provide design benefits.

Upgrade Substitutes include parts with enhanced power ratings (0.75W) or specialized features such as pulse withstanding capability. These parts are electrically compatible but offer increased performance margins.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	RoHS Status
RMCS1206FT1M00	Stackpole Electronics Inc	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur	ROHS3 Compliant
RMCF1206FT1M00	Stackpole Electronics Inc	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant
AF1206FR-071ML	YAGEO	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur, Automotive AEC-Q200	ROHS3 Compliant
ERJ-S08F1004V	Panasonic Electronic Components	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur, Automotive AEC-Q200	ROHS3 Compliant
AC1206FR-071ML	YAGEO	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3 Compliant
CHV1206-FX-1004ELF	Bourns Inc.	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	High Voltage	ROHS3 Compliant
CR1206-FX-1004ELF	Bourns Inc.	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant
CRCW12061M00FKEA	Vishay Dale	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant
CRCW12061M00FKEAHP	Vishay Dale	1 MOhms	±1%	0.75	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3 Compliant
CRCW12061M00FKTA	Vishay Dale	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS non-compliant
ERJ-8ENF1004V	Panasonic Electronic Components	1 MOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant

Engineering Selection Recommendations

For General Purpose Applications: RMCF1206FT1M00 (Stackpole Electronics Inc) is the primary manufacturer-recommended substitute. It maintains identical electrical specifications and packaging while adding automotive AEC-Q200 qualification. Product status is active with high inventory availability (150,422 units).

For Automotive Applications: CRCW12061M00FKEA (Vishay Dale) or AC1206FR-071ML (YAGEO) are suitable selections. Both carry AEC-Q200 certification and ROHS3 compliance. CRCW12061M00FKEA offers the lowest seated height (0.024"), while AC1206FR-071ML adds moisture resistance.

For Enhanced Reliability: CRCW12061M00FKEAHP (Vishay Dale) provides increased power rating (0.75W) with pulse withstanding capability and AEC-Q200 qualification, suitable for applications requiring additional performance margin.

For High Voltage Applications: CHV1206-FX-1004ELF (Bourns Inc.) is specified for high voltage operation while maintaining all core electrical parameters and ROHS3 compliance.

Parts to Avoid for New Designs: ERJ-8ENF1004V (Panasonic Electronic Components) carries a "Not For New Designs" product status. CRCW12061M00FKTA (Vishay Dale) is RoHS non-compliant and REACH affected, limiting use in regulated applications.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206FT1M00 be used as a direct replacement for RMCS1206FT1M00?

A: Yes. Both parts share identical resistance (1 MOhms), tolerance (±1%), power rating (0.25W), package (1206), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). RMCF1206FT1M00 adds automotive AEC-Q200 qualification without changing electrical or mechanical compatibility.

Q: What is the difference between CRCW12061M00FKEA and CRCW12061M00FKEAHP?

A: Both are Vishay Dale CRCW series resistors with identical resistance, tolerance, and package. The primary difference is power rating: FKEA is rated 0.25W while FKEAHP is rated 0.75W and includes pulse withstanding capability. FKEAHP is suitable for applications requiring higher power dissipation or transient pulse handling.

Q: Are all substitute parts ROHS3 compliant?

A: No. CRCW12061M00FKTA is RoHS non-compliant and REACH affected. All other listed substitutes are ROHS3 compliant. Verify compliance requirements for your application before selection.

Q: Can I use ERJ-S08F1004V or ERJ-8ENF1004V in new designs?

A: ERJ-S08F1004V is active and suitable for new designs. ERJ-8ENF1004V carries "Not For New Designs" status and should be avoided for new product development.

Q: What packaging options are available for these substitutes?

A: Packaging varies between Tape & Reel (TR) and Cut Tape (CT) with Digi-Reel. Verify packaging compatibility with your assembly process. All parts use identical 1206 (3216 Metric) case size.

Q: Which substitute offers the lowest profile?

A: CRCW12061M00FKEA and CRCW12061M00FKTA both have maximum seated height of 0.024" (0.60mm), the lowest among listed substitutes. Standard alternatives range from 0.026" to 0.030" seated height.

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