RMCS1206FT150K Equivalent & Substitute Parts

Part Overview

The RMCS1206FT150K is a 150 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor features anti-sulfur composition and operates across -55°C to 155°C. The part is currently active in production with 894 units in stock.

Substitute parts are necessary when the original RMCS1206FT150K becomes unavailable, when design requirements demand enhanced specifications such as automotive qualification or higher power ratings, or when alternative sourcing improves supply chain resilience.

Key Parameters

Parameter	Value
Resistance	150 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

Resistance Value: Must be 150 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
Moisture Sensitivity Level: Must be 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in power rating (0.25W, 0.5W, 0.75W), features (anti-sulfur, automotive AEC-Q200, moisture resistant, pulse withstanding, high voltage), and physical dimensions (within 1206 package tolerance) do not disqualify substitution but indicate enhanced or specialized capabilities.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff	Temp Range	Package	RoHS	MSL	Product Status
RMCS1206FT150K	Stackpole Electronics Inc	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
RMCF1206FT150K	Stackpole Electronics Inc	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
AC1206FR-07150KL	YAGEO	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
CR1206-FX-1503ELF	Bourns Inc.	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
CRCW1206150KFKEA	Vishay Dale	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
CRCW1206150KFKEAHP	Vishay Dale	150 kOhms	±1%	0.75	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
CRCW1206150KFKTA	Vishay Dale	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	RoHS non-compliant	1	Active
ERJ-8ENF1503V	Panasonic Electronic Components	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Not For New Designs
ESR18EZPF1503	Rohm Semiconductor	150 kOhms	±1%	0.5	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
KTR18EZPF1503	Rohm Semiconductor	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active
RC1206FR-07150KL	YAGEO	150 kOhms	±1%	0.25	±100ppm/°C	-55°C ~ 155°C	1206	ROHS3	1	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, ROHS3 Compliant)

RMCF1206FT150K, AC1206FR-07150KL, CR1206-FX-1503ELF, CRCW1206150KFKEA, ESR18EZPF1503, KTR18EZPF1503, and RC1206FR-07150KL are all active production parts with ROHS3 compliance. These parts are suitable for new designs and applications requiring regulatory compliance.

Automotive-Qualified Alternatives

RMCF1206FT150K, AC1206FR-07150KL, CRCW1206150KFKEA, CRCW1206150KFKEAHP, ERJ-8ENF1503V, ESR18EZPF1503, and KTR18EZPF1503 carry AEC-Q200 automotive qualification. These parts are appropriate for automotive and high-reliability applications.

Enhanced Power Rating Option

CRCW1206150KFKEAHP provides 0.75W power rating compared to the standard 0.25W, offering increased thermal headroom for pulse withstanding applications while maintaining identical resistance, tolerance, and temperature specifications.

Legacy Status Consideration

ERJ-8ENF1503V is marked "Not For New Designs" despite meeting all electrical and mechanical parameters. This part should be avoided in new product development but remains available for legacy system support.

Compliance Exception

CRCW1206150KFKTA is RoHS non-compliant and REACH-affected. This part should not be used in applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute CRCW1206150KFKEAHP (0.75W) for RMCS1206FT150K (0.25W)?

A: Yes. The 0.75W part meets all mandatory substitution parameters: 150 kOhms resistance, ±1% tolerance, 1206 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The higher power rating provides additional thermal capability without affecting electrical performance in circuits designed for 0.25W operation.

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

A: Anti-sulfur composition protects against sulfur-containing environmental contaminants. Moisture-resistant features enhance performance in humid conditions. Both are material enhancements that do not affect core substitution eligibility based on electrical and mechanical parameters.

Q: Why is ERJ-8ENF1503V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for this part number. While the part remains available and meets all electrical specifications, it should not be selected for new product designs. Existing designs using this part may continue to source it for production.

Q: Are all 1206 package variants physically interchangeable?

A: All listed parts use the 1206 (3216 Metric) package designation. Physical dimensions vary slightly within package tolerance (length 0.122" to 0.126", width 0.061" to 0.063", height 0.024" to 0.030"). These variations are within standard PCB footprint design margins and do not prevent mechanical interchangeability.

Q: Which substitute offers the best compliance profile?

A: RMCF1206FT150K, AC1206FR-07150KL, CRCW1206150KFKEA, ESR18EZPF1503, KTR18EZPF1503, and RC1206FR-07150KL all provide ROHS3 compliance, AEC-Q200 automotive qualification, and active production status. Selection among these should be based on feature requirements (automotive, moisture resistant, high voltage, pulse withstanding) and supply availability.

Q: Can I use these substitutes interchangeably in the same circuit?

A: Yes, provided the circuit design accommodates the specified power rating and operating temperature range. All listed substitutes maintain identical resistance value, tolerance, temperature coefficient, and temperature range. Verify that any enhanced features (automotive qualification, pulse withstanding capability) do not introduce unintended performance changes in your specific application.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message