RMCS1206FT110R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT110R is a 110 Ohm ±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. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate specific application requirements such as automotive qualification or enhanced pulse withstanding capabilities.

Key Parameters

Parameter	Value
Resistance	110 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 for the RMCS1206FT110R is determined by strict equivalence across the following parameters: resistance value (110 Ohms), tolerance (±1%), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents (0.25W Power Rating) Parts with identical power rating (0.25W) and all core electrical specifications matching the main part. These include AC1206FR-07110RL, CR1206-FX-1100ELF, CRCW1206110RFKEA, ERJ-8ENF1100V, and RC1206FR-07110RL.

Category 2: Enhanced Performance (0.75W Power Rating) CRCW1206110RFKEAHP provides higher power dissipation (0.75W) while maintaining all other electrical parameters, offering increased thermal margin for demanding applications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status
RMCS1206FT110R	Stackpole Electronics Inc	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur	Active
AC1206FR-07110RL	YAGEO	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	Active
CR1206-FX-1100ELF	Bourns Inc.	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
CRCW1206110RFKEA	Vishay Dale	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CRCW1206110RFKEAHP	Vishay Dale	110 Ω	±1%	0.75	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	Active
ERJ-8ENF1100V	Panasonic Electronic Components	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Not For New Designs
RC1206FR-07110RL	YAGEO	110 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active

Engineering Selection Recommendations

For general-purpose applications requiring direct equivalence to RMCS1206FT110R, RC1206FR-07110RL (YAGEO) and CR1206-FX-1100ELF (Bourns Inc.) are suitable active alternatives with moisture-resistant thick film construction.

For automotive applications requiring AEC-Q200 qualification, AC1206FR-07110RL (YAGEO), CRCW1206110RFKEA (Vishay Dale), or CRCW1206110RFKEAHP (Vishay Dale) are appropriate selections. CRCW1206110RFKEAHP provides enhanced pulse withstanding capability and higher power dissipation (0.75W) for thermally demanding circuits.

ERJ-8ENF1100V (Panasonic Electronic Components) carries AEC-Q200 qualification but is marked "Not For New Designs" and should be avoided for new product development.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206110RFKEAHP (0.75W) be used as a direct replacement for RMCS1206FT110R (0.25W)?

A: Yes. The higher power rating provides additional thermal margin and does not compromise circuit function. The 0.75W part is physically compatible within the 1206 package footprint and maintains all electrical specifications (resistance, tolerance, temperature coefficient, operating range).

Q: What is the difference between moisture-resistant and anti-sulfur features?

A: Both features address environmental protection. Anti-sulfur (RMCS1206FT110R) protects against sulfur-containing atmospheric corrosion. Moisture-resistant (RC1206FR-07110RL, CR1206-FX-1100ELF) protects against moisture ingress. Selection depends on application environment.

Q: Are all substitute parts suitable for automotive applications?

A: No. Only AC1206FR-07110RL, CRCW1206110RFKEA, CRCW1206110RFKEAHP, and ERJ-8ENF1100V carry AEC-Q200 qualification. RMCS1206FT110R, CR1206-FX-1100ELF, and RC1206FR-07110RL are not automotive-qualified.

Q: Why is ERJ-8ENF1100V marked "Not For New Designs"?

A: This designation indicates the part is in mature/legacy status. While functionally equivalent and currently in stock, Panasonic recommends using alternative sources for new product development to ensure long-term availability.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 1206 package specification. All parts conform to 1206 (3216 Metric) package dimensions and are PCB footprint compatible. Height variations range from 0.024" to 0.030" (0.60mm to 0.75mm), which is within standard PCB assembly tolerances.

Q: Do all parts have the same moisture sensitivity level?

A: Yes. All parts listed carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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