MCR03EZPFX3093 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX3093 is a 309 kOhms ±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	309 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 the MCR03EZPFX3093 is determined by strict equivalence across the following parameters: resistance value (309 kOhms), 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: CRCW0603309KFKEA (Vishay Dale), ERJ-3EKF3093V (Panasonic Electronic Components), and RMCF0603FT309K (Stackpole Electronics Inc).

Similar Substitutes meet all electrical and mechanical parameters but feature moisture-resistant composition instead of automotive AEC-Q200 rating: CR0603-FX-3093ELF (Bourns Inc.) and RC0603FR-07309KL (YAGEO).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Inventory
MCR03EZPFX3093	Rohm Semiconductor	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	1088 Pcs
CRCW0603309KFKEA	Vishay Dale	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	31202 Pcs
ERJ-3EKF3093V	Panasonic Electronic Components	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	106181 Pcs
RMCF0603FT309K	Stackpole Electronics Inc	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	139404 Pcs
CR0603-FX-3093ELF	Bourns Inc.	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	14033 Pcs
RC0603FR-07309KL	YAGEO	309 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	125650 Pcs

Engineering Selection Recommendations

For applications requiring strict automotive AEC-Q200 compliance, select from the direct substitutes: CRCW0603309KFKEA, ERJ-3EKF3093V, or RMCF0603FT309K. All three maintain full compliance with the original MCR03EZPFX3093 specifications and certifications.

RMCF0603FT309K (Stackpole Electronics Inc) offers the highest inventory availability at 139404 pieces. ERJ-3EKF3093V (Panasonic Electronic Components) provides 106181 pieces in stock. CRCW0603309KFKEA (Vishay Dale) maintains 31202 pieces.

For non-automotive applications where AEC-Q200 certification is not required, CR0603-FX-3093ELF (Bourns Inc.) and RC0603FR-07309KL (YAGEO) are functionally equivalent alternatives. RC0603FR-07309KL offers superior inventory availability at 125650 pieces.

All substitute parts maintain RoHS3 compliance, REACH Unaffected status, and EAR99 classification consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-3093ELF or RC0603FR-07309KL as direct replacements for MCR03EZPFX3093 in automotive applications?

A: No. CR0603-FX-3093ELF and RC0603FR-07309KL lack AEC-Q200 automotive qualification. Use these only in non-automotive applications. For automotive use, select CRCW0603309KFKEA, ERJ-3EKF3093V, or RMCF0603FT309K.

Q: Are all substitute parts physically compatible with the original PCB footprint?

A: Yes. All substitute parts use the 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm), but these do not affect PCB footprint compatibility.

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

A: Direct substitutes (CRCW0603309KFKEA, ERJ-3EKF3093V, RMCF0603FT309K) maintain AEC-Q200 automotive rating. Similar substitutes (CR0603-FX-3093ELF, RC0603FR-07309KL) feature moisture-resistant composition but lack automotive certification.

Q: Do all substitutes meet the same temperature coefficient and operating temperature specifications?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range.

Q: Which substitute offers the best inventory availability?

A: RMCF0603FT309K (Stackpole Electronics Inc) provides the highest stock at 139404 pieces for AEC-Q200 compliant applications. RC0603FR-07309KL (YAGEO) offers 125650 pieces for non-automotive applications.

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