RMCF1206FT357K Equivalent & Substitute Parts

Part Overview

The RMCF1206FT357K is a 357 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor is rated for automotive applications under AEC-Q200 and operates across -55°C to 155°C. The part is currently active in production with 2332 units in stock.

Substitute parts are necessary when the primary manufacturer experiences supply constraints, lead time extensions, or when design requirements allow for equivalent components from alternative manufacturers that meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	357 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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RMCF1206FT357K is determined by strict equivalence across the following parameters:

Resistance value: 357 kOhms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS compliance: ROHS3
Moisture sensitivity level: 1 (Unlimited)

All five substitute parts listed meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) remain within acceptable tolerances for 1206 package specifications and do not affect circuit board layout or thermal performance. Differences in product status and automotive feature sets are noted for design consideration but do not disqualify substitution based on electrical equivalence.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS3	MSL	Product Status	Inventory
RMCF1206FT357K	Stackpole Electronics Inc	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	1	Active	2332 Pcs
CRCW1206357KFKEA	Vishay Dale	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	1	Active	11475 Pcs
ERJ-8ENF3573V	Panasonic Electronic Components	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	1	Not For New Designs	54270 Pcs
KTR18EZPF3573	Rohm Semiconductor	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	1	Active	9059 Pcs
MCR18ERTF3573	Rohm Semiconductor	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Yes	1	Discontinued at DiGi Electronics	11108 Pcs
RC1206FR-07357KL	YAGEO	357 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Yes	1	Active	18728 Pcs

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, CRCW1206357KFKEA (Vishay Dale) and KTR18EZPF3573 (Rohm Semiconductor) are the primary substitutes. Both parts maintain active product status and full automotive compliance.

ERJ-8ENF3573V (Panasonic) is electrically equivalent but carries "Not For New Designs" status, limiting its use to legacy system support or existing inventory management.

MCR18ERTF3573 (Rohm) and RC1206FR-07357KL (YAGEO) lack AEC-Q200 certification. MCR18ERTF3573 is discontinued at DiGi Electronics. RC1206FR-07357KL is active but suitable only for non-automotive applications or designs where automotive qualification is not required.

All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can ERJ-8ENF3573V be used in new automotive designs? A: No. ERJ-8ENF3573V carries "Not For New Designs" status. It is suitable only for legacy system support or replacement in existing applications.

Q: What is the difference between CRCW1206357KFKEA and KTR18EZPF3573? A: Both parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, and operating temperature range. KTR18EZPF3573 includes high voltage capability as an additional feature. Selection depends on supplier availability and lead time.

Q: Are MCR18ERTF3573 and RC1206FR-07357KL suitable for automotive applications? A: MCR18ERTF3573 lacks AEC-Q200 certification and is discontinued. RC1206FR-07357KL lacks AEC-Q200 certification. Neither part is suitable for automotive applications requiring AEC-Q200 compliance. Both are suitable for industrial or consumer applications.

Q: Do all substitute parts fit the same PCB footprint? A: Yes. All parts use the 1206 (3216 Metric) package. Physical dimension variations (length, width, height) remain within standard 1206 package tolerances and do not affect PCB layout compatibility.

Q: What is MSL 1 and why does it matter? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. All listed parts have MSL 1 rating, eliminating special storage or handling procedures.

Q: Can I substitute based on resistance value alone? A: No. Substitution requires equivalence across all specified parameters: resistance, tolerance, power rating, package, composition, temperature coefficient, operating temperature range, and compliance certifications. Partial matching does not ensure circuit performance or reliability.

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