MCR03EZPFX1780 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1780 is a 178 Ohms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets Automotive AEC-Q200 specifications and is designed for automotive and industrial applications requiring precision resistance values with tight tolerance. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	178 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 ~ 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX1780 is determined by strict equivalence across the following parameters:

Resistance value: 178 Ohms
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 categorized as follows:

Direct Substitutes meet all electrical and mechanical parameters with identical or compatible automotive AEC-Q200 certification:

MCR03ERTF1780 (Rohm Semiconductor)
CRCW0603178RFKEA (Vishay Dale)
ERJ-3EKF1780V (Panasonic Electronic Components)
RMCF0603FT178R (Stackpole Electronics Inc)

Similar Substitutes meet all core electrical and mechanical parameters but differ in specific features (moisture resistance designation instead of automotive AEC-Q200 rating):

CR0603-FX-1780ELF (Bourns Inc.)
RC0603FR-07178RL (YAGEO)
RC1608F1780CS (Samsung Electro-Mechanics)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	RoHS
MCR03EZPFX1780	Rohm Semiconductor	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Discontinued	ROHS3
MCR03ERTF1780	Rohm Semiconductor	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Thick Film	Discontinued	ROHS3
CRCW0603178RFKEA	Vishay Dale	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
ERJ-3EKF1780V	Panasonic Electronic Components	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
RMCF0603FT178R	Stackpole Electronics Inc	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
CR0603-FX-1780ELF	Bourns Inc.	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	ROHS3
RC0603FR-07178RL	YAGEO	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	ROHS3
RC1608F1780CS	Samsung Electro-Mechanics	178 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	ROHS3

Engineering Selection Recommendations

For applications requiring Automotive AEC-Q200 certification, select from the direct substitute group: CRCW0603178RFKEA (Vishay Dale), ERJ-3EKF1780V (Panasonic Electronic Components), or RMCF0603FT178R (Stackpole Electronics Inc). All three are currently in active production status with substantial inventory availability.

For non-automotive applications where moisture resistance is the primary requirement, the similar substitute group (CR0603-FX-1780ELF, RC0603FR-07178RL, RC1608F1780CS) provides equivalent electrical performance with active product status and high inventory levels.

All substitute parts maintain identical electrical specifications (178 Ohms ±1%, 0.1W, ±100ppm/°C temperature coefficient, -55°C ~ 155°C operating range) and package compatibility (0603 / 1608 Metric). All are ROHS3 compliant with MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can MCR03ERTF1780 be used as a direct replacement for MCR03EZPFX1780?

A: Yes. Both parts are manufactured by Rohm Semiconductor with identical electrical specifications (178 Ohms ±1%, 0.1W, ±100ppm/°C) and 0603 package. The primary difference is packaging format (MCR03ERTF1780 is available in Cut Tape and Digi-Reel formats). Both meet ROHS3 compliance and MSL 1 requirements.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes (CRCW0603178RFKEA, ERJ-3EKF1780V, RMCF0603FT178R) carry Automotive AEC-Q200 certification matching the original part. Similar substitutes (CR0603-FX-1780ELF, RC0603FR-07178RL, RC1608F1780CS) are rated for moisture resistance instead of automotive qualification. All meet identical electrical and mechanical parameters.

Q: Are there any dimensional differences between substitute parts?

A: Dimensional variations exist within acceptable tolerances. CRCW0603178RFKEA measures 0.061" L x 0.033" W with 0.020" max height. MCR03EZPFX1780, ERJ-3EKF1780V, CR0603-FX-1780ELF, RC0603FR-07178RL, and RC1608F1780CS measure 0.063" L x 0.031" W with 0.022" max height. RMCF0603FT178R measures 0.061" L x 0.031" W with 0.022" max height. All variations remain within 0603 package specifications and do not affect PCB layout compatibility.

Q: Which substitute has the highest inventory availability?

A: RC0603FR-07178RL (YAGEO) has the highest inventory at 306,571 pieces. CRCW0603178RFKEA (Vishay Dale) has 17,834 pieces, and RMCF0603FT178R (Stackpole Electronics Inc) has 47,224 pieces available.

Q: Can these parts be used interchangeably in automotive applications?

A: Direct substitutes with Automotive AEC-Q200 certification (CRCW0603178RFKEA, ERJ-3EKF1780V, RMCF0603FT178R) are qualified for automotive use. Similar substitutes without AEC-Q200 certification should be evaluated against specific application requirements before deployment in automotive systems.

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