MCR03EZPFX5101 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX5101 is a 5.1 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 functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Resistance	5.1 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 for the MCR03EZPFX5101 is determined by strict equivalence across the following critical parameters:

Resistance value: 5.1 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
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

Substitute parts are classified into two categories:

Direct Substitutes maintain full electrical and mechanical equivalence with identical or compatible packaging configurations (Cut Tape, Tape & Reel). These parts are interchangeable without design modification.

Similar Substitutes meet all electrical specifications and core mechanical requirements but may differ in specific features (such as moisture resistance designation) or packaging presentation. These parts are functionally equivalent for circuit operation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Packaging Type
MCR03EZPFX5101	Rohm Semiconductor	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	-
CRCW06035K10FKEA	Vishay Dale	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	Cut Tape (CT) & Digi-Reel®
CRCW06035K10FKEB	Vishay Dale	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	Tape & Reel (TR)
ERJ-3EKF5101V	Panasonic Electronic Components	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	Tape & Reel (TR)
RMCF0603FT5K10	Stackpole Electronics Inc	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	Tape & Reel (TR)
CR0603-FX-5101ELF	Bourns Inc.	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	Tape & Reel (TR)
CRG0603F5K1	TE Connectivity Passive Product	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	Tape & Reel (TR)
RC0603FR-075K1L	YAGEO	5.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Substitutes (Recommended Priority)

CRCW06035K10FKEA (Vishay Dale) is the primary recommended substitute. This part maintains active product status, carries AEC-Q200 automotive certification, and is available in Cut Tape and Digi-Reel packaging. Electrical and mechanical specifications are fully equivalent to the MCR03EZPFX5101.

ERJ-3EKF5101V (Panasonic Electronic Components) and RMCF0603FT5K10 (Stackpole Electronics Inc) are secondary direct substitutes with active status and AEC-Q200 certification. Both are available in Tape & Reel packaging with full electrical equivalence.

Similar Substitutes (Alternative Options)

CR0603-FX-5101ELF (Bourns Inc.), CRG0603F5K1 (TE Connectivity), and RC0603FR-075K1L (YAGEO) meet all electrical specifications and core mechanical requirements. These parts lack AEC-Q200 automotive certification but maintain ROHS3 compliance and identical operating parameters. Selection of these alternatives should be evaluated against specific application requirements for automotive qualification.

For applications requiring automotive-grade components, prioritize CRCW06035K10FKEA, ERJ-3EKF5101V, or RMCF0603FT5K10.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the MCR03EZPFX5101?

A: Direct substitutes (CRCW06035K10FKEA, ERJ-3EKF5101V, RMCF0603FT5K10) are fully interchangeable. Similar substitutes (CR0603-FX-5101ELF, CRG0603F5K1, RC0603FR-075K1L) are electrically equivalent but lack AEC-Q200 automotive certification. Selection depends on application requirements.

Q: What is the significance of AEC-Q200 certification?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and quality standards. For automotive applications, parts with this certification are required. The MCR03EZPFX5101 and direct substitutes carry this certification; similar substitutes do not.

Q: Are there dimensional differences between the main part and substitutes?

A: All parts use the 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance ranges (length: 0.061" to 0.063", width: 0.031" to 0.033", height: 0.020" to 0.022"). These variations are within standard PCB design tolerances and do not affect circuit board layout compatibility.

Q: What packaging options are available?

A: Substitutes are available in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) configurations. Selection depends on assembly process requirements. Cut Tape packaging suits lower-volume or manual assembly; Tape & Reel suits automated pick-and-place operations.

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

A: Yes. All listed parts maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling precautions are required during storage or assembly.

Q: Which substitute has the highest inventory availability?

A: RMCF0603FT5K10 (Stackpole Electronics Inc) has the highest reported inventory at 834,378 pieces. ERJ-3EKF5101V (Panasonic) follows with 310,571 pieces.

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