RMCS1206FT100R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT100R is a 100 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor is designed for general-purpose applications requiring precision resistive elements with environmental protection. The part is currently active in production. Substitute parts are necessary to address supply availability, design upgrades for automotive applications, or enhanced performance requirements such as increased power ratings or additional environmental certifications.

Key Parameters

Parameter	Value
Resistance	100 Ohms
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Substitution Criteria (Must Match):

Resistance value: 100 Ohms
Tolerance: ±1%
Package / Case: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Substitution Criteria (May Vary):

Power Rating: 0.25W, 0.5W, or 0.75W (higher ratings provide design margin)
Manufacturer: Stackpole Electronics Inc, YAGEO, Bourns Inc., Vishay Dale, Panasonic Electronic Components, Rohm Semiconductor
Features: Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant, Pulse Withstanding
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®
Product Status: Active or Not For New Designs

Substitute parts are grouped by power rating and feature set to facilitate selection based on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Features	Temp Coeff	Op Temp Range	RoHS Status	Product Status
RMCS1206FT100R	Stackpole Electronics Inc	100 Ohms	±1%	0.25W	1206	Anti-Sulfur	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
RMCF1206FT100R	Stackpole Electronics Inc	100 Ohms	±1%	0.25W	1206	Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
RMCP1206FT100R	Stackpole Electronics Inc	100 Ohms	±1%	0.5W	1206	Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
AF1206FR-07100RL	YAGEO	100 Ohms	±1%	0.25W	1206	Anti-Sulfur, Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
AC1206FR-07100RL	YAGEO	100 Ohms	±1%	0.25W	1206	Automotive AEC-Q200, Moisture Resistant	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
CR1206-FX-1000ELF	Bourns Inc.	100 Ohms	±1%	0.25W	1206	Moisture Resistant	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
CRCW1206100RFKEA	Vishay Dale	100 Ohms	±1%	0.25W	1206	Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
CRCW1206100RFKEAHP	Vishay Dale	100 Ohms	±1%	0.75W	1206	Automotive AEC-Q200, Pulse Withstanding	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active
CRCW1206100RFKTA	Vishay Dale	100 Ohms	±1%	0.25W	1206	Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	RoHS non-compliant	Active
ERJ-8ENF1000V	Panasonic Electronic Components	100 Ohms	±1%	0.25W	1206	Automotive AEC-Q200	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Not For New Designs
ESR18EZPF1000	Rohm Semiconductor	100 Ohms	±1%	0.5W	1206	Automotive AEC-Q200, Pulse Withstanding	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Equivalents (Same Power Rating, Active Status, ROHS3 Compliant):

RMCF1206FT100R (Stackpole Electronics Inc) provides equivalent electrical performance with automotive AEC-Q200 certification, suitable for designs requiring automotive-grade qualification without anti-sulfur specification.

AF1206FR-07100RL (YAGEO) and AC1206FR-07100RL (YAGEO) both maintain 0.25W power rating and ROHS3 compliance. AF1206FR-07100RL includes anti-sulfur protection matching the original part. AC1206FR-07100RL adds moisture resistance for enhanced environmental protection.

CRCW1206100RFKEA (Vishay Dale) and CRCW1206100RFKTA (Vishay Dale) maintain 0.25W rating and automotive AEC-Q200 certification. CRCW1206100RFKEA is ROHS3 compliant; CRCW1206100RFKTA is RoHS non-compliant and should not be selected for new designs requiring RoHS compliance.

CR1206-FX-1000ELF (Bourns Inc.) provides 0.25W rating with moisture resistance and ROHS3 compliance, suitable for applications requiring environmental protection without automotive certification.

Higher Power Rating Alternatives (Enhanced Design Margin):

RMCP1206FT100R (Stackpole Electronics Inc) offers 0.5W power rating with automotive AEC-Q200 certification and ROHS3 compliance, providing increased thermal margin for the same package footprint.

CRCW1206100RFKEAHP (Vishay Dale) provides 0.75W power rating with automotive AEC-Q200 certification, pulse withstanding capability, and ROHS3 compliance for applications requiring maximum power dissipation capability.

ESR18EZPF1000 (Rohm Semiconductor) offers 0.5W power rating with automotive AEC-Q200 certification and pulse withstanding capability, suitable for designs requiring enhanced transient protection.

Legacy Status:

ERJ-8ENF1000V (Panasonic Electronic Components) is marked "Not For New Designs" and should be avoided in new product development despite ROHS3 compliance and automotive AEC-Q200 certification.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCS1206FT100R with a higher power rating resistor such as RMCP1206FT100R or CRCW1206100RFKEAHP?

A: Yes. Higher power ratings (0.5W or 0.75W) are electrically compatible substitutes. The 1206 package accommodates these ratings. Higher power ratings provide additional thermal margin and are suitable for applications where the original 0.25W rating may be marginal. Verify PCB layout and thermal design accommodate the substitute part's physical dimensions.

Q: What is the difference between RMCF1206FT100R and RMCS1206FT100R?

A: RMCF1206FT100R includes automotive AEC-Q200 certification, while RMCS1206FT100R includes anti-sulfur protection. Both maintain identical electrical specifications (100 Ohms ±1%, 0.25W, ±100ppm/°C, -55°C ~ 155°C). RMCF1206FT100R is suitable for automotive applications; RMCS1206FT100R is suitable for general-purpose applications in sulfur-rich environments.

Q: Are all substitute parts ROHS3 compliant?

A: No. CRCW1206100RFKTA is RoHS non-compliant and should not be selected for applications requiring RoHS compliance. All other listed substitutes are ROHS3 compliant.

Q: Can I use ERJ-8ENF1000V in a new design?

A: No. ERJ-8ENF1000V is marked "Not For New Designs" by the manufacturer. Select an active-status alternative such as CRCW1206100RFKEA, AF1206FR-07100RL, or RMCF1206FT100R.

Q: What packaging formats are available for these substitutes?

A: Substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. RMCS1206FT100R, RMCF1206FT100R, RMCP1206FT100R, and ESR18EZPF1000 are supplied in Tape & Reel format. AF1206FR-07100RL, AC1206FR-07100RL, CR1206-FX-1000ELF, CRCW1206100RFKEA, CRCW1206100RFKEAHP, CRCW1206100RFKTA, and ERJ-8ENF1000V are supplied in Cut Tape & Digi-Reel® format. Verify packaging compatibility with assembly equipment before design finalization.

Q: Which substitute offers the best environmental protection?

A: AC1206FR-07100RL (YAGEO) combines automotive AEC-Q200 certification with moisture resistance. CRCW1206100RFKEAHP (Vishay Dale) adds pulse withstanding capability to automotive AEC-Q200 certification. AF1206FR-07100RL (YAGEO) includes anti-sulfur protection with automotive AEC-Q200 certification. Selection depends on specific environmental requirements.

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