MCR03EZPFX6652 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX6652 is a 66.5 kOhms ±1% thick film chip resistor in 0603 (1608 Metric) package rated for 0.1W power dissipation. Manufactured by Rohm Semiconductor, this component meets AEC-Q200 automotive qualification standards and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Resistance	66.5 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
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: 66.5 kOhms
Tolerance: ±1%
Power rating: 0.1W
Package designation: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2
RoHS3 compliance
MSL rating: 1

Substitute parts are classified into two categories:

Direct Substitutes meet all electrical and mechanical parameters with AEC-Q200 automotive qualification: CRCW060366K5FKEA, CRCW060366K5FKEB, ERJ-3EKF6652V, and RMCF0603FT66K5.

Similar Substitutes meet all core electrical and mechanical parameters but feature moisture-resistant construction without explicit AEC-Q200 designation: CR0603-FX-6652ELF and RC0603FR-0766K5L.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	AEC-Q200	Product Status	Inventory
MCR03EZPFX6652	Rohm Semiconductor	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Discontinued	782 Pcs
CRCW060366K5FKEA	Vishay Dale	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	5460 Pcs
CRCW060366K5FKEB	Vishay Dale	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Discontinued	29005 Pcs
ERJ-3EKF6652V	Panasonic Electronic Components	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	130798 Pcs
RMCF0603FT66K5	Stackpole Electronics Inc	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	207020 Pcs
CR0603-FX-6652ELF	Bourns Inc.	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Active	11737 Pcs
RC0603FR-0766K5L	YAGEO	66.5 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Active	231633 Pcs

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from direct substitutes: RMCF0603FT66K5 (Stackpole Electronics Inc, active status, 207020 Pcs inventory), ERJ-3EKF6652V (Panasonic Electronic Components, active status, 130798 Pcs inventory), or CRCW060366K5FKEA (Vishay Dale, active status, 5460 Pcs inventory).

For non-automotive applications where AEC-Q200 certification is not required, similar substitutes CR0603-FX-6652ELF (Bourns Inc., 11737 Pcs) and RC0603FR-0766K5L (YAGEO, 231633 Pcs) provide equivalent electrical performance with moisture-resistant construction and active product status.

All substitute parts maintain ROHS3 compliance, MSL rating of 1, and identical electrical specifications to the original MCR03EZPFX6652.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-6652ELF or RC0603FR-0766K5L as direct replacements for MCR03EZPFX6652 in automotive applications?

A: CR0603-FX-6652ELF and RC0603FR-0766K5L are electrically and mechanically equivalent but lack explicit AEC-Q200 automotive qualification. Use these only in non-automotive circuits or where automotive qualification is not a design requirement.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes (CRCW060366K5FKEA, CRCW060366K5FKEB, ERJ-3EKF6652V, RMCF0603FT66K5) carry AEC-Q200 automotive qualification matching the original part. Similar substitutes (CR0603-FX-6652ELF, RC0603FR-0766K5L) meet all electrical and mechanical specifications but feature moisture-resistant construction without automotive certification.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in 0603 (1608 Metric) package with 2 terminations, identical to the original MCR03EZPFX6652. Packaging format is Tape & Reel (TR) for all listed substitutes.

Q: Which substitute offers the best inventory availability?

A: RC0603FR-0766K5L (YAGEO) provides the highest inventory at 231633 Pcs, followed by RMCF0603FT66K5 (Stackpole Electronics Inc) at 207020 Pcs and ERJ-3EKF6652V (Panasonic Electronic Components) at 130798 Pcs.

Q: Do all substitutes maintain the same temperature coefficient and operating range?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, identical to MCR03EZPFX6652.

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