MCR03EZPFX8663 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX8663 is an 866 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This automotive-grade component meets AEC-Q200 qualification standards and is designed for high-reliability applications requiring stable resistance performance across extended temperature ranges. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers.

Key Parameters

Parameter	Value
Resistance	866 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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX8663 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 866 kOhms
Tolerance: ±1%
Power rating: 0.1W
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
RoHS compliance: ROHS3
Moisture sensitivity: MSL 1

Substitution Categories:

Direct Equivalents (Automotive AEC-Q200 Rated): MCR03ERTF8663, CRCW0603866KFKEA, ERJ-3EKF8663V, RMCF0603FT866K. These parts maintain full automotive qualification and are suitable for applications requiring AEC-Q200 compliance.

Functional Equivalent (Non-Automotive Rated): RC0603FR-07866KL. This YAGEO part meets all electrical and mechanical specifications but lacks automotive AEC-Q200 certification. Suitable only for non-automotive applications where automotive qualification is not required.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status
MCR03EZPFX8663	Rohm Semiconductor	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Discontinued
MCR03ERTF8663	Rohm Semiconductor	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Discontinued
CRCW0603866KFKEA	Vishay Dale	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active
ERJ-3EKF8663V	Panasonic Electronic Components	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active
RMCF0603FT866K	Stackpole Electronics Inc	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Active
RC0603FR-07866KL	YAGEO	866 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Active

Engineering Selection Recommendations

For Automotive Applications (AEC-Q200 Required):

Select from CRCW0603866KFKEA (Vishay Dale), ERJ-3EKF8663V (Panasonic), or RMCF0603FT866K (Stackpole Electronics). All three maintain active product status and full AEC-Q200 automotive qualification. CRCW0603866KFKEA offers the highest inventory availability (10,126 units). ERJ-3EKF8663V provides the largest stock position (68,619 units) and is supplied on Tape & Reel. RMCF0603FT866K is available in 9,748 units on Tape & Reel.

For Non-Automotive Applications:

RC0603FR-07866KL (YAGEO) is suitable when automotive qualification is not a design requirement. This part is actively manufactured with substantial inventory (66,328 units) and meets all electrical and mechanical specifications of the original part.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and REACH unaffected status, matching the original MCR03EZPFX8663 specifications.

Frequently Asked Questions (FAQ)

Q: Can MCR03ERTF8663 be used as a direct replacement for MCR03EZPFX8663?

A: MCR03ERTF8663 matches all electrical and mechanical parameters but does not carry AEC-Q200 automotive certification. Use only in applications where automotive qualification is not required.

Q: What is the primary difference between the automotive-rated substitutes?

A: CRCW0603866KFKEA, ERJ-3EKF8663V, and RMCF0603FT866K are electrically and mechanically identical. Selection should be based on inventory availability, packaging preference (Cut Tape vs. Tape & Reel), and supplier lead times.

Q: Is RC0603FR-07866KL suitable for automotive applications?

A: No. RC0603FR-07866KL lacks AEC-Q200 certification. It is suitable only for consumer and industrial applications where automotive qualification is not mandated.

Q: Do all substitute parts fit the same PCB footprint?

A: Yes. All parts use the 0603 (1608 Metric) package with identical land pattern requirements. Minor dimensional variations (0.061" to 0.063" length, 0.031" to 0.033" width) are within standard PCB design tolerances.

Q: Are there any performance differences between the substitute parts?

A: No. All substitute parts meet identical electrical specifications: 866 kOhms ±1%, 0.1W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range.

Q: What packaging options are available for the substitutes?

A: CRCW0603866KFKEA and RC0603FR-07866KL are supplied in Cut Tape (CT) & Digi-Reel format. ERJ-3EKF8663V and RMCF0603FT866K are supplied on Tape & Reel (TR).

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