MCR03EZPFX73R2 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX73R2 is a 73.2 Ohm ±1% thick film chip resistor in 0603 (1608 Metric) package rated for 0.1W power dissipation. Manufactured by Rohm Semiconductor, this component is qualified to automotive AEC-Q200 standards and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain identical electrical specifications and package dimensions to ensure direct PCB compatibility.

Key Parameters

Parameter	Specification
Resistance Value	73.2 Ohms
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	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance value: 73.2 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C to 155°C (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All identified substitute parts meet these core electrical and mechanical criteria. Variations in product status, compliance certifications, and dimensional tolerances are noted but do not preclude functional substitution in applications where the main part is no longer available.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS Status	Product Status	Inventory
MCR03EZPFX73R2	Rohm Semiconductor	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Discontinued	656 Pcs
MCR03ERTF73R2	Rohm Semiconductor	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	ROHS3	Discontinued	1927 Pcs
CRCW060373R2FKEA	Vishay Dale	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active	31412 Pcs
CRCW060373R2FKTA	Vishay Dale	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	RoHS non-compliant	Active	5812 Pcs
ERJ-3EKF73R2V	Panasonic Electronic Components	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active	73406 Pcs
RMCF0603FT73R2	Stackpole Electronics Inc	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active	23910 Pcs
RC0603FR-0773R2L	YAGEO	73.2 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	ROHS3	Active	63727 Pcs

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from: CRCW060373R2FKEA, CRCW060373R2FKTA, ERJ-3EKF73R2V, or RMCF0603FT73R2. All four parts carry AEC-Q200 certification matching the original MCR03EZPFX73R2.

For RoHS3 compliance with active product status, CRCW060373R2FKEA, ERJ-3EKF73R2V, and RMCF0603FT73R2 are preferred. CRCW060373R2FKTA is RoHS non-compliant and REACH-affected, limiting suitability for regulated applications.

For highest inventory availability, ERJ-3EKF73R2V (73406 Pcs) and RC0603FR-0773R2L (63727 Pcs) offer the most reliable supply. RC0603FR-0773R2L lacks AEC-Q200 certification but maintains ROHS3 compliance and active product status.

MCR03ERTF73R2 from Rohm Semiconductor provides continuity within the same manufacturer but is discontinued and lacks AEC-Q200 certification.

Frequently Asked Questions (FAQ)

Q: Can I substitute MCR03EZPFX73R2 with any of these parts on my PCB?

A: Yes, all listed parts are electrically and mechanically equivalent. They share identical resistance (73.2 Ω), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). Direct PCB substitution is feasible without circuit redesign.

Q: What is the difference between AEC-Q200 and non-AEC-Q200 parts?

A: AEC-Q200 certification indicates automotive-grade qualification with defined reliability and quality standards. Parts with AEC-Q200 (CRCW060373R2FKEA, CRCW060373R2FKTA, ERJ-3EKF73R2V, RMCF0603FT73R2) are suitable for automotive applications. RC0603FR-0773R2L and MCR03ERTF73R2 lack this certification and should not be used in safety-critical automotive circuits.

Q: Does RoHS compliance affect substitution?

A: RoHS3 compliance is a regulatory requirement for many markets. CRCW060373R2FKTA is RoHS non-compliant and REACH-affected, making it unsuitable for applications subject to EU regulations. CRCW060373R2FKEA, ERJ-3EKF73R2V, RMCF0603FT73R2, and RC0603FR-0773R2L are all ROHS3 compliant.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within 0603 package tolerance. Length ranges from 0.061" to 0.063" (1.55mm to 1.60mm), width from 0.031" to 0.033" (0.80mm to 0.85mm), and height from 0.020" to 0.022" (0.50mm to 0.55mm). These variations remain within standard 0603 specifications and do not affect PCB assembly or functionality.

Q: Which substitute offers the best supply availability?

A: ERJ-3EKF73R2V (Panasonic) has the highest inventory at 73406 Pcs, followed by RC0603FR-0773R2L (YAGEO) at 63727 Pcs. Both are active products with reliable long-term availability.

Q: Can I use RC0603FR-0773R2L in automotive applications?

A: RC0603FR-0773R2L lacks AEC-Q200 certification. While electrically equivalent, it is not qualified for automotive use. For automotive applications, use CRCW060373R2FKEA, CRCW060373R2FKTA, ERJ-3EKF73R2V, or RMCF0603FT73R2.

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