MCR03EZPFX1433 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1433 is a 143 kOhms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets Automotive AEC-Q200 specifications 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	143 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

Substitution for MCR03EZPFX1433 is determined by strict equivalence across the following parameters:

Resistance value: 143 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
RoHS3 compliance
MSL rating: 1 (Unlimited)

Substitute parts are grouped into two categories:

Direct Substitutes maintain full AEC-Q200 automotive qualification and identical electrical specifications. These parts are pin-compatible and functionally equivalent for automotive applications.

Similar Substitutes meet all core electrical and mechanical parameters but differ in specific features (moisture resistance designation instead of explicit AEC-Q200 rating, or minor dimensional variations within tolerance). These are suitable for general industrial applications where automotive qualification is not mandatory.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Inventory
MCR03EZPFX1433	Rohm Semiconductor	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	615 Pcs
MCR03ERTF1433	Rohm Semiconductor	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Discontinued	950 Pcs
CRCW0603143KFKEA	Vishay Dale	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	21110 Pcs
ERJ-3EKF1433V	Panasonic Electronic Components	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	20871 Pcs
RMCF0603FT143K	Stackpole Electronics Inc	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	395992 Pcs
CR0603-FX-1433ELF	Bourns Inc.	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	26475 Pcs
RC0603FR-07143KL	YAGEO	143 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	299920 Pcs

Engineering Selection Recommendations

For Automotive Applications (AEC-Q200 Required):

CRCW0603143KFKEA (Vishay Dale), ERJ-3EKF1433V (Panasonic), and RMCF0603FT143K (Stackpole Electronics) are direct substitutes with active product status and full AEC-Q200 compliance. All three maintain identical electrical specifications and operating temperature range. RMCF0603FT143K offers the highest inventory availability (395,992 pcs), followed by CRCW0603143KFKEA (21,110 pcs) and ERJ-3EKF1433V (20,871 pcs).

For General Industrial Applications:

CR0603-FX-1433ELF (Bourns) and RC0603FR-07143KL (YAGEO) are suitable alternatives when AEC-Q200 certification is not required. Both are active products with moisture-resistant thick film construction. RC0603FR-07143KL has significantly higher inventory (299,920 pcs) compared to CR0603-FX-1433ELF (26,475 pcs).

For Discontinued Part Replacement:

MCR03ERTF1433 (Rohm Semiconductor) is a direct Rohm alternative but is also discontinued. This part should not be selected for new designs or long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-1433ELF or RC0603FR-07143KL as direct replacements for MCR03EZPFX1433 in automotive applications?

A: No. CR0603-FX-1433ELF and RC0603FR-07143KL lack AEC-Q200 automotive qualification. Use CRCW0603143KFKEA, ERJ-3EKF1433V, or RMCF0603FT143K for automotive applications requiring AEC-Q200 compliance.

Q: Are all substitute parts pin-compatible with the original MCR03EZPFX1433?

A: Yes. All listed substitutes use the 0603 (1608 Metric) package with 2 terminations, ensuring mechanical and electrical pin compatibility on PCB layouts.

Q: What is the difference between Direct and Similar substitutes?

A: Direct substitutes (CRCW0603143KFKEA, ERJ-3EKF1433V, RMCF0603FT143K) maintain AEC-Q200 automotive qualification. Similar substitutes (CR0603-FX-1433ELF, RC0603FR-07143KL) meet all electrical and mechanical parameters but are designated as moisture-resistant rather than automotive-qualified.

Q: Which substitute offers the best supply availability?

A: RC0603FR-07143KL (YAGEO) has the highest inventory at 299,920 pcs. For automotive-qualified parts, RMCF0603FT143K (Stackpole) offers 395,992 pcs.

Q: Do all substitutes have the same temperature coefficient and operating range?

A: Yes. All substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, matching the original MCR03EZPFX1433 specifications.

Q: Is RoHS3 compliance maintained across all substitutes?

A: Yes. All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's environmental compliance.

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