MCR03EZPFX9102 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX9102 is a 91 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	91 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	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	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX9102 is determined by strict equivalence across the following parameters:

Resistance value: 91 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
RoHS compliance: ROHS3
Moisture sensitivity: MSL 1

Substitute parts are categorized as follows:

Direct Substitutes maintain full equivalence across all electrical and mechanical parameters, including automotive AEC-Q200 certification. These parts are functionally interchangeable without design modification.

Similar Substitutes meet all core electrical and mechanical requirements but may have minor dimensional variations or different feature sets (such as moisture-resistant composition). These parts are compatible for applications where the specific feature differences do not impact circuit performance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status	Inventory
MCR03EZPFX9102	Rohm Semiconductor	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	Discontinued	6270 Pcs
CRCW060391K0FKEA	Vishay Dale	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	66667 Pcs
ERJ-3EKF9102V	Panasonic Electronic Components	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	167838 Pcs
RMCF0603FT91K0	Stackpole Electronics Inc	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	143911 Pcs
AC0603FR-0791KL	YAGEO	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	Active	805 Pcs
CR0603-FX-9102ELF	Bourns Inc.	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	No	Active	50177 Pcs
RC0603FR-0791KL	YAGEO	91 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	No	Active	121630 Pcs

Engineering Selection Recommendations

Direct Substitutes (Recommended for AEC-Q200 Applications):

CRCW060391K0FKEA (Vishay Dale): Active status with high inventory availability. Maintains full AEC-Q200 automotive certification and all electrical specifications.
ERJ-3EKF9102V (Panasonic Electronic Components): Active status with highest inventory level. Full AEC-Q200 compliance and identical electrical parameters.
RMCF0603FT91K0 (Stackpole Electronics Inc): Active status with substantial inventory. Complete AEC-Q200 certification and parameter equivalence.

Similar Substitutes (For Non-AEC-Q200 Constrained Applications):

AC0603FR-0791KL (YAGEO): Active status with AEC-Q200 certification and additional moisture-resistant feature. Limited inventory.
CR0603-FX-9102ELF (Bourns Inc.): Active status without AEC-Q200 certification but with moisture-resistant composition. Suitable for applications where automotive qualification is not mandatory.
RC0603FR-0791KL (YAGEO): Active status without AEC-Q200 certification but with moisture-resistant feature. High inventory availability.

For automotive applications requiring AEC-Q200 compliance, select from direct substitutes. For general-purpose applications, similar substitutes with moisture-resistant features provide additional environmental protection.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part without modifying my circuit design?

A: Yes. All listed substitute parts maintain identical electrical specifications (91 kOhms ±1%, 0.1W, ±100ppm/°C) and the same 0603 package footprint. Direct substitution is possible without circuit modification.

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

A: Direct substitutes (CRCW060391K0FKEA, ERJ-3EKF9102V, RMCF0603FT91K0) carry AEC-Q200 automotive certification identical to the original part. Similar substitutes (AC0603FR-0791KL, CR0603-FX-9102ELF, RC0603FR-0791KL) meet all electrical and mechanical requirements but either lack AEC-Q200 certification or have additional features such as moisture resistance. Use direct substitutes for automotive applications requiring AEC-Q200 compliance.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 0603 package specification. The MCR03EZPFX9102, ERJ-3EKF9102V, AC0603FR-0791KL, and RC0603FR-0791KL measure 0.063" L × 0.031" W (1.60mm × 0.80mm). The CRCW060391K0FKEA and RMCF0603FT91K0 measure 0.061" L × 0.031" W (1.55mm × 0.80mm). These variations remain within 0603 package tolerance and do not affect PCB footprint compatibility.

Q: Which substitute has the best availability?

A: ERJ-3EKF9102V (Panasonic) offers the highest inventory at 167,838 pieces, followed by RMCF0603FT91K0 (Stackpole) at 143,911 pieces and RC0603FR-0791KL (YAGEO) at 121,630 pieces.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original MCR03EZPFX9102 specifications.

Q: Can I use CR0603-FX-9102ELF or RC0603FR-0791KL in automotive applications?

A: These parts lack AEC-Q200 certification. Use them only in applications where automotive qualification is not required. For AEC-Q200 mandated designs, select from direct substitutes.

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