MCR01MZPJ4R3 Equivalent & Substitute Parts

Part Overview

The MCR01MZPJ4R3 is a 4.3 Ohm ±5% thick film chip resistor in 0402 (1005 Metric) package rated for 0.063W (1/16W) power dissipation. Manufactured by Rohm Semiconductor, this component is designed for automotive applications with AEC-Q200 qualification and operates across -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	4.3 Ohms
Tolerance	±5%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thick Film
Operating Temperature	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Parameters (Must Match):

Resistance value: 4.3 Ohms
Package: 0402 (1005 Metric)
Composition: Thick Film
Operating temperature range: -55°C to 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Allowable Variations:

Tolerance: ±5% or tighter (±1% acceptable as upgrade)
Power rating: 0.063W minimum (0.1W acceptable as upgrade)
Temperature coefficient: Within specified ranges
Automotive qualification (AEC-Q200): Present in original; optional in substitutes
Packaging format: Cut Tape (CT) or Tape & Reel (TR) acceptable

All listed substitutes meet the mandatory parameters and are electrically and mechanically compatible with the MCR01MZPJ4R3.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	AEC-Q200	Status	Packaging
MCR01MZPJ4R3	Rohm Semiconductor	4.3 Ω	±5%	0.063	-250/+500	Yes	Discontinued	-
MCR01MRTJ4R3	Rohm Semiconductor	4.3 Ω	±5%	0.063	-250/+500	-	Discontinued	Cut Tape
ERJ-2GEJ4R3X	Panasonic Electronic Components	4.3 Ω	±5%	0.1	-100/+600	Yes	Active	Tape & Reel
RC0402JR-074R3L	YAGEO	4.3 Ω	±5%	0.063	±200	-	Active	Tape & Reel
CRCW04024R30FKED	Vishay Dale	4.3 Ω	±1%	0.063	±100	Yes	Active	Tape & Reel
CRCW04024R30JNED	Vishay Dale	4.3 Ω	±5%	0.063	±200	Yes	Active	Cut Tape

Engineering Selection Recommendations

For Automotive Applications with AEC-Q200 Requirement: CRCW04024R30FKED (Vishay Dale) or CRCW04024R30JNED (Vishay Dale) are preferred substitutes. Both maintain AEC-Q200 qualification and are in active production status. CRCW04024R30FKED offers improved tolerance (±1%) and lower temperature coefficient (±100ppm/°C) for applications requiring tighter performance specifications.

For General Industrial Applications: RC0402JR-074R3L (YAGEO) provides an active-status alternative with moisture-resistant construction and adequate performance parameters. ERJ-2GEJ4R3X (Panasonic) offers higher power rating (0.1W) and AEC-Q200 qualification with active availability.

For Direct Rohm Semiconductor Continuity: MCR01MRTJ4R3 maintains identical electrical specifications to the original MCR01MZPJ4R3 but is also discontinued. This option is suitable only if existing inventory is available.

All recommended substitutes are ROHS3 compliant with MSL rating 1 (Unlimited) and operate within the -55°C to 155°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute with ±1% tolerance instead of ±5%? A: Yes. Tighter tolerance (±1%) is a performance upgrade and maintains full compatibility. The MCR01MZPJ4R3 application will function identically or with improved accuracy.

Q: Is the 0.1W power rating (ERJ-2GEJ4R3X) compatible with a 0.063W design? A: Yes. Higher power rating provides additional thermal margin and is fully compatible. The component will operate safely in applications designed for 0.063W dissipation.

Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance? A: No. Packaging format affects only handling, storage, and assembly processes. Electrical and mechanical specifications remain identical.

Q: Which substitute is best for automotive applications? A: CRCW04024R30FKED or CRCW04024R30JNED (both Vishay Dale) maintain AEC-Q200 qualification and active production status, making them optimal for automotive designs.

Q: Can I mix substitutes from different manufacturers in the same design? A: Yes. All listed substitutes meet identical electrical and mechanical specifications. Cross-manufacturer substitution is permissible within a single design.

Q: What is the significance of temperature coefficient differences? A: Temperature coefficient indicates resistance change over temperature range. Lower values (±100ppm/°C) provide better stability across temperature extremes. All listed substitutes operate within the required -55°C to 155°C range.

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