RMCF1206FG2K21 Equivalent & Substitute Parts

Part Overview

The RMCF1206FG2K21 is a 2.21 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 740 pieces in stock. Substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and design requirements that may benefit from upgraded power ratings or alternative manufacturer certifications.

Key Parameters

Parameter	Value
Resistance	2.21 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 is determined by the following critical parameters:

Resistance Value: Must be 2.21 kOhms
Tolerance: Must be ±1%
Package / Case: Must be 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
RoHS Compliance: ROHS3 Compliant

Direct substitutes maintain identical electrical specifications and 0.25W power rating. The upgrade substitute (ESR18EZPF2211) provides increased power handling at 0.5W while maintaining all other core parameters. All substitute parts are packaged in tape and reel format and comply with ROHS3 and REACH requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status	Inventory (Pcs)
RMCF1206FG2K21	Stackpole Electronics Inc	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	740
RMCF1206FT2K21	Stackpole Electronics Inc	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	183257
CR1206-FX-2211ELF	Bourns Inc.	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	62937
CRCW12062K21FKEA	Vishay Dale	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	48645
ERJ-8ENF2211V	Panasonic Electronic Components	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Not For New Designs	32465
ESR18EZPF2211	Rohm Semiconductor	2.21 kOhms	±1%	0.5	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	4984
AC1206FR-072K21L	YAGEO	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	2976
CRCW12062K21FKEAC	Vishay Dale	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	67307
RC1206FR-072K21L	YAGEO	2.21 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	34663

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications)

RMCF1206FT2K21, CRCW12062K21FKEA, CR1206-FX-2211ELF, AC1206FR-072K21L, CRCW12062K21FKEAC, and RC1206FR-072K21L are direct electrical and mechanical equivalents. All maintain 2.21 kOhms ±1% resistance, 0.25W power rating, and 1206 package dimensions. RMCF1206FT2K21 offers the highest inventory availability (183,257 pieces) and maintains identical Stackpole manufacturing with AEC-Q200 certification. CRCW12062K21FKEA and CRCW12062K21FKEAC from Vishay Dale provide AEC-Q200 rated alternatives with substantial stock levels.

Automotive-Rated Alternatives

For applications requiring AEC-Q200 certification, RMCF1206FT2K21, CRCW12062K21FKEA, and CRCW12062K21FKEAC are qualified selections. ERJ-8ENF2211V from Panasonic meets AEC-Q200 specifications but carries "Not For New Designs" status, limiting suitability for new product development.

Upgrade Option

ESR18EZPF2211 from Rohm Semiconductor provides increased power dissipation at 0.5W (double the original rating) while maintaining all other electrical parameters. This upgrade is applicable when thermal margin improvement is required without changing circuit impedance characteristics.

Non-Automotive Alternatives

CR1206-FX-2211ELF (Bourns), AC1206FR-072K21L (YAGEO), CRCW12062K21FKEAC (Vishay Dale), and RC1206FR-072K21L (YAGEO) lack AEC-Q200 certification and are suitable only for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206FT2K21 replace RMCF1206FG2K21 in automotive applications?

A: Yes. Both parts are manufactured by Stackpole Electronics Inc with identical electrical specifications (2.21 kOhms ±1%, 0.25W), package dimensions (1206), and AEC-Q200 automotive certification. The difference is packaging format; both are supplied in tape and reel.

Q: What is the difference between direct substitutes and the upgrade option?

A: Direct substitutes maintain 0.25W power rating. ESR18EZPF2211 provides 0.5W power rating while preserving all other parameters. The upgrade is applicable when increased thermal headroom is needed without altering circuit resistance values.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts meet ROHS3 compliance and REACH requirements as specified in the input data.

Q: Can non-AEC-Q200 parts be used in automotive designs?

A: Non-AEC-Q200 parts (CR1206-FX-2211ELF, AC1206FR-072K21L, CRCW12062K21FKEAC, RC1206FR-072K21L) are not suitable for automotive applications requiring AEC-Q200 qualification. Use only AEC-Q200 certified alternatives for automotive designs.

Q: Why is ERJ-8ENF2211V marked "Not For New Designs"?

A: This product status indicates the manufacturer is phasing out this part number. While electrically compatible, it should not be selected for new product development. Use RMCF1206FT2K21, CRCW12062K21FKEA, or other active-status alternatives instead.

Q: Are package dimensions identical across all substitutes?

A: All substitutes use 1206 (3216 Metric) package. Minor dimensional variations exist within tolerance (length 0.120" to 0.126", height 0.024" to 0.030"), but all are mechanically compatible with standard 1206 footprints.

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