MCR03EZPFX3900 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX3900 is a 390 Ohm ±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, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	390 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 to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX3900 is determined by strict equivalence across the following parameters: resistance value (390 Ohms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (RoHS3, REACH Unaffected, EAR99).

Substitute parts are grouped into two categories:

Direct Substitutes maintain full AEC-Q200 automotive qualification and identical electrical specifications. These parts are interchangeable without design modification.

Similar Substitutes meet all electrical and mechanical parameters but may have different feature sets (such as moisture resistance designation) or lack explicit AEC-Q200 rating. These parts are functionally equivalent for the specified electrical parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status	Inventory
MCR03EZPFX3900	Rohm Semiconductor	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	1045 Pcs
CRCW0603390RFKEA	Vishay Dale	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	5100 Pcs
ERJ-3EKF3900V	Panasonic Electronic Components	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	228101 Pcs
RMCF0603FT390R	Stackpole Electronics Inc	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	767 Pcs
CR0603-FX-3900ELF	Bourns Inc.	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	55167 Pcs
CRG0603F390R	TE Connectivity Passive Product	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	20275 Pcs
RC0603FR-07390RL	YAGEO	390 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	163073 Pcs

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from the direct substitutes: CRCW0603390RFKEA (Vishay Dale), ERJ-3EKF3900V (Panasonic Electronic Components), or RMCF0603FT390R (Stackpole Electronics Inc). All three maintain active product status and full compliance with automotive standards.

ERJ-3EKF3900V offers the highest inventory availability at 228,101 pieces. CRCW0603390RFKEA provides 5,100 pieces with Cut Tape and Digi-Reel packaging options. RMCF0603FT390R has the lowest inventory at 767 pieces.

For non-automotive applications or where AEC-Q200 is not required, CR0603-FX-3900ELF (Bourns Inc.), CRG0603F390R (TE Connectivity), and RC0603FR-07390RL (YAGEO) are functionally equivalent. RC0603FR-07390RL has the highest inventory at 163,073 pieces and is available in Cut Tape and Digi-Reel packaging.

All substitute parts are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-3900ELF as a direct replacement for MCR03EZPFX3900 in automotive applications?

A: CR0603-FX-3900ELF meets all electrical and mechanical parameters but lacks AEC-Q200 automotive qualification. Use only if automotive certification is not required for your application.

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

A: Direct substitutes (CRCW0603390RFKEA, ERJ-3EKF3900V, RMCF0603FT390R) carry AEC-Q200 automotive rating identical to the original part. Similar substitutes meet electrical specifications but may lack automotive certification or have different feature designations such as moisture resistance.

Q: Are all substitute parts available in the same packaging as MCR03EZPFX3900?

A: Packaging varies by manufacturer. CRCW0603390RFKEA and RC0603FR-07390RL are available in Cut Tape and Digi-Reel formats. ERJ-3EKF3900V and RMCF0603FT390R are available in Cut Tape and Digi-Reel. CR0603-FX-3900ELF and CRG0603F390R are supplied in Tape & Reel format. Verify packaging requirements for your assembly process.

Q: Do all substitutes have the same physical dimensions?

A: All parts use 0603 (1608 Metric) package with minor dimensional variations. Maximum seated height ranges from 0.020" to 0.022" (0.50mm to 0.55mm). Length and width vary between 0.061" to 0.063" (1.55mm to 1.60mm) and 0.031" to 0.033" (0.80mm to 0.85mm) respectively. These variations are within standard 0603 package tolerances and do not affect PCB layout compatibility.

Q: Which substitute has the best inventory availability?

A: RC0603FR-07390RL (YAGEO) has 163,073 pieces in stock. For AEC-Q200 qualified parts, ERJ-3EKF3900V (Panasonic) has 228,101 pieces available.

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