RMCF1206FT5K49 Equivalent & Substitute Parts

Part Overview

The RMCF1206FT5K49 is a 5.49 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This automotive-grade component meets AEC-Q200 specifications and operates across -55°C to 155°C. The part is currently active in production with 3465 units in stock. Equivalent and substitute parts are necessary to ensure design flexibility, manage supply chain continuity, and accommodate component availability across different manufacturing sources.

Key Parameters

Parameter	Value
Resistance	5.49 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 to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RMCF1206FT5K49 is determined by strict equivalence across the following parameters:

Resistance value: 5.49 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 to 155°C
RoHS compliance: ROHS3
Moisture sensitivity level: 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical specifications. Variations in physical dimensions (length, width, height) and additional features (automotive AEC-Q200 certification, moisture resistance) are noted but do not disqualify substitution when the primary parameters align.

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status	Inventory
Stackpole Electronics Inc	RMCF1206FT5K49	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	3465 Pcs
Bourns Inc.	CR1206-FX-5491ELF	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	624 Pcs
Vishay Dale	CRCW12065K49FKEA	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	14321 Pcs
Panasonic Electronic Components	ERJ-8ENF5491V	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Not For New Designs	61791 Pcs
Rohm Semiconductor	KTR18EZPF5491	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	11061 Pcs
YAGEO	RC1206FR-075K49L	5.49 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	6066 Pcs

Engineering Selection Recommendations

For new designs and production applications, prioritize parts with Active product status and AEC-Q200 automotive certification:

CRCW12065K49FKEA (Vishay Dale): Active status, AEC-Q200 certified, highest inventory availability (14321 units)
KTR18EZPF5491 (Rohm Semiconductor): Active status, AEC-Q200 certified, high voltage capability, 11061 units available
RMCF1206FT5K49 (Stackpole Electronics Inc): Original specification, Active status, AEC-Q200 certified

For applications where automotive certification is not required, CR1206-FX-5491ELF (Bourns Inc.) and RC1206FR-075K49L (YAGEO) are functionally equivalent alternatives with moisture-resistant features.

The ERJ-8ENF5491V (Panasonic Electronic Components) carries "Not For New Designs" status and should be used only for legacy system maintenance or repair applications despite high inventory levels.

Frequently Asked Questions (FAQ)

Q: Can I substitute any of these parts for the RMCF1206FT5K49 in automotive applications?

A: Parts with AEC-Q200 certification (CRCW12065K49FKEA, ERJ-8ENF5491V, KTR18EZPF5491) are qualified for automotive use. CR1206-FX-5491ELF and RC1206FR-075K49L lack this certification and should be evaluated against your specific automotive requirements.

Q: What is the difference between parts with and without AEC-Q200 certification?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and quality standards. Parts without this certification may still function electrically but have not undergone automotive-specific qualification testing.

Q: Are there physical dimension differences between these parts?

A: All parts use the 1206 (3216 Metric) package. Minor variations exist in seated height: RMCF1206FT5K49 and ERJ-8ENF5491V measure 0.028" (0.70mm), CRCW12065K49FKEA measures 0.024" (0.60mm), KTR18EZPF5491 measures 0.026" (0.65mm), and RC1206FR-075K49L measures 0.026" (0.65mm). These variations are within standard PCB assembly tolerances.

Q: Why is ERJ-8ENF5491V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for this part line. While functionally equivalent and available in stock, it should not be selected for new product designs. Use for legacy system support only.

Q: Do all these parts meet RoHS3 compliance?

A: Yes, all listed substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original RMCF1206FT5K49 specifications.

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