MCR18ERTF2321 Equivalent & Substitute Parts

Part Overview

The MCR18ERTF2321 is a 2.32 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) surface mount package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The resistor operates across -55°C to 155°C with ±100ppm/°C temperature coefficient and meets ROHS3 compliance requirements.

Key Parameters

Parameter	Value
Resistance	2.32 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 Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance value: 2.32 kOhms
Tolerance: ±1%
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1

Parts are grouped into two categories:

Direct Equivalents maintain identical power rating (0.25W) and core specifications. These include KTR18EZPF2321, CRCW12062K32FKEA, ERJ-8ENF2321V, RC1206FR-072K32L, and RMCF1206FT2K32.

Upgrade Equivalents provide enhanced power rating (0.5W) or additional certifications while maintaining all other core parameters. These include ESR18EZPF2321 and AC1206FR-072K32L.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Package	Temp Coeff	Operating Temp	Product Status	RoHS
MCR18ERTF2321	Rohm Semiconductor	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Discontinued	ROHS3
KTR18EZPF2321	Rohm Semiconductor	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3
ESR18EZPF2321	Rohm Semiconductor	2.32 kΩ	±1%	0.5W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3
CRCW12062K32FKEA	Vishay Dale	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3
ERJ-8ENF2321V	Panasonic Electronic Components	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Not For New Designs	ROHS3
RC1206FR-072K32L	YAGEO	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3
RMCF1206FT2K32	Stackpole Electronics Inc	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3
AC1206FR-072K32L	YAGEO	2.32 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: KTR18EZPF2321

KTR18EZPF2321 from Rohm Semiconductor is the preferred direct substitute. It maintains identical electrical specifications and package dimensions while offering active product status. The part includes AEC-Q200 automotive qualification and high voltage features, providing enhanced reliability margins. Inventory availability is substantial at 10,616 pieces.

Secondary Recommendations: CRCW12062K32FKEA, RMCF1206FT2K32, RC1206FR-072K32L

These parts provide direct electrical and mechanical equivalence with active product status. CRCW12062K32FKEA (Vishay Dale) and RMCF1206FT2K32 (Stackpole Electronics) both carry AEC-Q200 automotive certification. RC1206FR-072K32L (YAGEO) offers moisture-resistant thick film construction. All three maintain identical power rating and package specifications.

Upgrade Option: ESR18EZPF2321

ESR18EZPF2321 provides enhanced power rating (0.5W versus 0.25W) while maintaining all other core parameters. This upgrade is suitable for applications requiring additional thermal margin or pulse withstanding capability. AEC-Q200 automotive qualification is included.

Avoid: ERJ-8ENF2321V

ERJ-8ENF2321V carries "Not For New Designs" status despite meeting all electrical and mechanical requirements. This designation indicates manufacturer discontinuation trajectory and should be avoided for new production designs.

Frequently Asked Questions (FAQ)

Q: Can I use ESR18EZPF2321 as a direct replacement for MCR18ERTF2321?

A: Yes. ESR18EZPF2321 is electrically and mechanically equivalent with identical resistance, tolerance, temperature coefficient, and operating range. The 0.5W power rating is a superset of the original 0.25W specification, providing additional thermal capability without affecting circuit performance.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 1206 package specification. Length ranges from 0.120" to 0.126", width from 0.061" to 0.063", and height from 0.024" to 0.028". These variations remain within standard 1206 footprint tolerances and do not affect PCB assembly compatibility.

Q: Which substitute offers the best long-term availability?

A: RC1206FR-072K32L (YAGEO) demonstrates the highest inventory level at 5,000,200 pieces, indicating strong production continuity. KTR18EZPF2321 (Rohm Semiconductor) with 10,616 pieces and CRCW12062K32FKEA (Vishay Dale) with 8,798 pieces also provide reliable supply.

Q: Do all substitutes meet automotive qualification requirements?

A: KTR18EZPF2321, ESR18EZPF2321, CRCW12062K32FKEA, RMCF1206FT2K32, and AC1206FR-072K32L carry AEC-Q200 certification. RC1206FR-072K32L and ERJ-8ENF2321V do not include automotive qualification but meet all electrical specifications.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the manufacturer is transitioning the product to end-of-life. While ERJ-8ENF2321V remains functionally equivalent, it should not be selected for new production designs due to anticipated discontinuation.

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