MCR03EZPFX1803 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1803 is a 180 kOhms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This automotive-grade thick film resistor meets AEC-Q200 qualification and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	180 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (180 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 categorized as follows:

Upgrade Category: KTR03EZPF1803 (Rohm Semiconductor) — Same manufacturer, active product status, identical electrical specifications with additional high-voltage feature designation.

Direct Equivalents: CRCW0603180KFKEA (Vishay Dale), ERJ-3EKF1803V (Panasonic Electronic Components), RMCF0603FT180K (Stackpole Electronics Inc) — All meet core electrical and mechanical parameters with active product status.

Similar Equivalents: CR0603-FX-1803ELF (Bourns Inc.), RC0603FR-07180KL (YAGEO) — Meet all electrical and mechanical parameters; feature designation differs (moisture resistant vs. automotive AEC-Q200).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Product Status	RoHS	MSL
MCR03EZPFX1803	Rohm Semiconductor	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Discontinued	ROHS3	1
KTR03EZPF1803	Rohm Semiconductor	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1
CRCW0603180KFKEA	Vishay Dale	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1
ERJ-3EKF1803V	Panasonic Electronic Components	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1
RMCF0603FT180K	Stackpole Electronics Inc	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1
CR0603-FX-1803ELF	Bourns Inc.	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1
RC0603FR-07180KL	YAGEO	180 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3	1

Engineering Selection Recommendations

All listed substitute parts satisfy the core electrical and mechanical requirements for direct replacement of the MCR03EZPFX1803. Selection should prioritize active product status and supply availability.

Primary Selection: KTR03EZPF1803 (Rohm Semiconductor) — Same manufacturer as the original part, active product status, and highest inventory availability (20,731 pcs). Maintains identical specifications with additional high-voltage capability.

Secondary Selections: CRCW0603180KFKEA (Vishay Dale), ERJ-3EKF1803V (Panasonic Electronic Components), and RMCF0603FT180K (Stackpole Electronics Inc) — All active products with substantial inventory levels and full compliance with ROHS3, REACH, and EAR99 requirements.

Alternative Selections: CR0603-FX-1803ELF (Bourns Inc.) and RC0603FR-07180KL (YAGEO) — Meet all electrical and mechanical parameters. Feature designation differs (moisture resistant classification rather than automotive AEC-Q200 rating), but electrical performance remains equivalent.

All candidates maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can KTR03EZPF1803 directly replace MCR03EZPFX1803 in automotive applications? A: Yes. Both parts share identical resistance (180 kOhms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). KTR03EZPF1803 is the active equivalent from the same manufacturer.

Q: What is the difference between the automotive AEC-Q200 rated parts and the moisture-resistant parts? A: The MCR03EZPFX1803, KTR03EZPF1803, CRCW0603180KFKEA, ERJ-3EKF1803V, and RMCF0603FT180K carry automotive AEC-Q200 qualification. CR0603-FX-1803ELF and RC0603FR-07180KL are designated as moisture resistant. All meet identical electrical specifications and operating parameters. Selection depends on application requirements for automotive qualification.

Q: Are all substitute parts available in the same packaging format? A: All substitute parts use 0603 (1608 Metric) package. Packaging format (Tape & Reel, Cut Tape, or Digi-Reel) varies by manufacturer and supplier. Verify packaging availability with your component distributor.

Q: Do all substitute parts meet RoHS compliance? A: Yes. All listed substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. Moisture Sensitivity Level is 1 (Unlimited) across all parts.

Q: Which substitute offers the best supply availability? A: KTR03EZPF1803 (Rohm Semiconductor) has the highest reported inventory at 20,731 pcs. YAGEO RC0603FR-07180KL follows with 90,400 pcs, and CRCW0603180KFKEA (Vishay Dale) has 5,000,300 pcs available. Verify current availability with your distributor.

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