MCR03EZPFX1003 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1003 is a 100 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, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for seamless board-level substitution.

Key Parameters

Parameter	Value
Resistance	100 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 to 155°C
Automotive Rating	AEC-Q200
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 (100 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 (AEC-Q200, ROHS3). Physical dimensions must remain within specified tolerances. All substitute parts listed maintain these core specifications, enabling direct replacement without circuit redesign or performance degradation.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	RoHS3	Product Status	Packaging
MCR03EZPFX1003	Rohm Semiconductor	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Discontinued	0603
CRCW0603100KFKEA	Vishay Dale	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
CRCW0603100KFKEB	Vishay Dale	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Discontinued	0603
CRCW0603100KFKEC	Vishay Dale	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
ERJ-3EKF1003V	Panasonic Electronic Components	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
RCG0603100KFKEA	Vishay Dale	100k	±1%	0.1	±100	-55 to 155	No	Yes	Active	0603
RMCF0603FG100K	Stackpole Electronics Inc	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
RMCF0603FT100K	Stackpole Electronics Inc	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
CRCW0603100KDHEAP	Vishay Dale	100k	±0.5%	0.1	±50	-55 to 155	Yes	Yes	Active	0603
KTR03EZPF1003	Rohm Semiconductor	100k	±1%	0.1	±100	-55 to 155	Yes	Yes	Active	0603
CR0603-FX-1003ELF	Bourns Inc.	100k	±1%	0.1	±100	-55 to 155	No	Yes	Active	0603

Engineering Selection Recommendations

For direct replacement of the discontinued MCR03EZPFX1003, select from active-status parts maintaining identical electrical specifications and AEC-Q200 automotive certification: CRCW0603100KFKEA, CRCW0603100KFKEC, ERJ-3EKF1003V, RMCF0603FG100K, or RMCF0603FT100K. These parts provide equivalent performance with confirmed supply availability.

The CRCW0603100KDHEAP offers enhanced tolerance (±0.5% versus ±1%) and improved temperature coefficient (±50ppm/°C versus ±100ppm/°C) while maintaining all other specifications, suitable for applications requiring tighter tolerance control.

The KTR03EZPF1003 from Rohm Semiconductor provides an active alternative from the original manufacturer with identical specifications and added high-voltage capability.

Parts without AEC-Q200 certification (RCG0603100KFKEA, CR0603-FX-1003ELF) are electrically equivalent but lack automotive qualification and should be used only in non-automotive applications or where automotive certification is not required.

Frequently Asked Questions (FAQ)

Q: Can I use RCG0603100KFKEA as a direct replacement for MCR03EZPFX1003?

A: RCG0603100KFKEA matches all electrical parameters and package specifications but lacks AEC-Q200 automotive certification. Use only if your application does not require automotive qualification.

Q: What is the difference between CRCW0603100KFKEA and CRCW0603100KFKEC?

A: Both are electrically and mechanically identical. The difference lies in packaging format: CRCW0603100KFKEA uses Cut Tape & Digi-Reel, while CRCW0603100KFKEC uses the same format. Both are active products with equivalent performance.

Q: Is CRCW0603100KDHEAP a suitable substitute?

A: CRCW0603100KDHEAP is electrically compatible with superior tolerance (±0.5%) and temperature coefficient (±50ppm/°C). It is a performance upgrade suitable for applications requiring tighter specifications, though at potentially higher cost.

Q: Why is KTR03EZPF1003 listed as an upgrade option?

A: KTR03EZPF1003 is from the same manufacturer (Rohm Semiconductor) with identical base specifications but includes high-voltage capability, making it suitable for applications requiring enhanced voltage performance.

Q: Do all substitute parts have the same physical dimensions?

A: All parts use 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance: length ranges from 0.061" to 0.063", width from 0.031" to 0.033", and height from 0.020" to 0.022". These variations are within standard PCB footprint tolerances and do not affect assembly compatibility.

Q: Which substitute offers the best supply availability?

A: ERJ-3EKF1003V from Panasonic Electronic Components shows the highest inventory level (1,732,095 pcs), followed by RMCF0603FG100K (1,174,996 pcs) and RMCF0603FT100K (500,300 pcs).

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original part's environmental compliance status.

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