MCR03EZPFX9101 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX9101 is a 9.1 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, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for seamless board-level substitution.

Key Parameters

Parameter	Value
Resistance	9.1 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 ~ 155°C
Automotive Rating	AEC-Q200
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: 9.1 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 ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

All substitute parts listed below meet these core electrical and mechanical requirements. Parts are categorized as Direct Manufacturer equivalents (full parameter match) or Similar equivalents (minor feature variations that do not affect core functionality).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Inventory
MCR03EZPFX9101	Rohm Semiconductor	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	709 Pcs
CRCW06039K10FKEA	Vishay Dale	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	21191 Pcs
CRG0603F9K1	TE Connectivity Passive Product	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	20716 Pcs
ERJ-3EKF9101V	Panasonic Electronic Components	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	141752 Pcs
RMCF0603FT9K10	Stackpole Electronics Inc	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	86875 Pcs
AC0603FR-079K1L	YAGEO	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	68718 Pcs
RC0603FR-079K1L	YAGEO	9.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	711184 Pcs

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Recommended for AEC-Q200 Applications):

ERJ-3EKF9101V (Panasonic): Active product with AEC-Q200 certification, highest inventory availability (141752 Pcs), identical dimensional and electrical specifications.
RMCF0603FT9K10 (Stackpole Electronics): Active product with AEC-Q200 certification, substantial inventory (86875 Pcs), full parameter equivalence.
CRCW06039K10FKEA (Vishay Dale): Active product with AEC-Q200 certification, adequate inventory (21191 Pcs), direct electrical match.

Similar Equivalents (For Non-AEC-Q200 Applications):

AC0603FR-079K1L (YAGEO): Active product with AEC-Q200 certification and moisture-resistant feature, high inventory (68718 Pcs).
RC0603FR-079K1L (YAGEO): Active product with moisture-resistant feature, highest inventory availability (711184 Pcs). Note: AEC-Q200 rating not specified; suitable for general industrial applications.
CRG0603F9K1 (TE Connectivity): Active product without AEC-Q200 certification; suitable for non-automotive applications requiring standard thick film performance.

For automotive applications requiring AEC-Q200 compliance, select from ERJ-3EKF9101V, RMCF0603FT9K10, or CRCW06039K10FKEA. For general-purpose applications, RC0603FR-079K1L offers maximum availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute MCR03EZPFX9101 with any of these parts in an automotive circuit?

A: For automotive applications requiring AEC-Q200 compliance, use only ERJ-3EKF9101V, RMCF0603FT9K10, or CRCW06039K10FKEA. These parts carry explicit AEC-Q200 certification. CRG0603F9K1 and RC0603FR-079K1L lack this certification and are not suitable for automotive use.

Q: What is the difference between Direct Manufacturer and Similar equivalents?

A: Direct Manufacturer equivalents match all specified parameters including AEC-Q200 certification. Similar equivalents meet core electrical and mechanical specifications but may lack specific certifications (such as AEC-Q200) or include additional features (such as moisture resistance). Selection depends on application requirements.

Q: Are dimensional variations between parts significant?

A: All listed parts use the 0603 (1608 Metric) package. Minor dimensional variations (e.g., 0.061" vs 0.063" length, 0.020" vs 0.022" height) fall within standard 0603 package tolerances and do not affect PCB footprint compatibility or assembly processes.

Q: Which substitute offers the best availability?

A: RC0603FR-079K1L (YAGEO) has the highest inventory at 711184 Pcs. For AEC-Q200 applications, ERJ-3EKF9101V (Panasonic) offers the best availability at 141752 Pcs.

Q: Do all substitutes have the same moisture sensitivity level?

A: Yes. All listed parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Is RoHS3 compliance maintained across all substitutes?

A: Yes. All substitute parts are ROHS3 compliant, matching the original MCR03EZPFX9101 specification.

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