MCR03EZPFX5112 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX5112 is a 51.1 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 operating temperature range of -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain identical electrical and mechanical specifications for seamless board-level replacement.

Key Parameters

Parameter	Value
Resistance	51.1 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

Substitute parts for the MCR03EZPFX5112 are selected based on strict equivalence across the following critical parameters:

Resistance value: 51.1 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
Moisture sensitivity level: 1 (Unlimited)

Substitutes are categorized as Direct Equivalents (identical electrical and mechanical specifications with active product status) and Similar Alternatives (matching core specifications with minor feature variations). All listed parts maintain full compatibility with the original MCR03EZPFX5112 footprint and electrical performance requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	RoHS Status	Product Status	Packaging Type
MCR03EZPFX5112	Rohm Semiconductor	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Discontinued	-
CRCW060351K1FKEA	Vishay Dale	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active	Cut Tape (CT) & Digi-Reel®
CRCW060351K1FKTA	Vishay Dale	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	RoHS non-compliant	Active	Tape & Reel (TR)
ERJ-3EKF5112V	Panasonic Electronic Components	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active	Tape & Reel (TR)
RMCF0603FT51K1	Stackpole Electronics Inc	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active	Tape & Reel (TR)
CR0603-FX-5112ELF	Bourns Inc.	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	ROHS3 Compliant	Active	Cut Tape (CT) & Digi-Reel®
RC0603FR-0751K1L	YAGEO	51.1 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	ROHS3 Compliant	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For applications requiring strict AEC-Q200 automotive qualification with ROHS3 compliance and active product status, the recommended direct equivalents are:

CRCW060351K1FKEA (Vishay Dale) — Active status, ROHS3 compliant, Cut Tape packaging
ERJ-3EKF5112V (Panasonic Electronic Components) — Active status, ROHS3 compliant, Tape & Reel packaging
RMCF0603FT51K1 (Stackpole Electronics Inc) — Active status, ROHS3 compliant, Tape & Reel packaging

The CRCW060351K1FKTA variant from Vishay Dale is electrically equivalent but carries RoHS non-compliant status and REACH Affected designation, requiring compliance verification before selection.

For applications where AEC-Q200 certification is not mandatory, CR0603-FX-5112ELF (Bourns Inc.) and RC0603FR-0751K1L (YAGEO) provide active alternatives with ROHS3 compliance, though without automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX5112 be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts maintain identical resistance value (51.1 kOhms), tolerance (±1%), power rating (0.1W), package (0603), and temperature specifications. Direct footprint and electrical substitution is supported without circuit modification.

Q: What is the difference between Direct Equivalents and Similar Alternatives?

A: Direct Equivalents (CRCW060351K1FKEA, ERJ-3EKF5112V, RMCF0603FT51K1) maintain full AEC-Q200 automotive qualification and ROHS3 compliance matching the original part. Similar Alternatives (CR0603-FX-5112ELF, RC0603FR-0751K1L) provide equivalent electrical and mechanical specifications but lack AEC-Q200 certification, suitable for non-automotive applications.

Q: Does packaging type (Cut Tape vs. Tape & Reel) affect electrical performance?

A: No. Packaging type affects only supply format and handling logistics. Electrical and mechanical specifications remain identical regardless of packaging configuration.

Q: Is CRCW060351K1FKTA suitable for automotive applications?

A: CRCW060351K1FKTA maintains AEC-Q200 rating and identical electrical specifications but carries RoHS non-compliant status and REACH Affected designation. Compliance requirements must be verified against specific application and regional regulations before selection.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed substitutes share this specification, eliminating moisture sensitivity as a selection constraint.

Q: Are there dimensional variations between substitute parts?

A: Minor dimensional variations exist within 0603 package tolerance. All parts maintain 0603 (1608 Metric) footprint compatibility. Specific dimensional data is available in individual manufacturer datasheets for precision placement verification.

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