MCR10ERTF3003 Equivalent & Substitute Parts

Part Overview

The MCR10ERTF3003 is a 300 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Resistance	300 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following parameters: resistance value (300 kOhms), tolerance (±1%), power rating (0.125W), package type (0805), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, REACH Unaffected).

Parts are categorized as direct substitutes when all electrical and mechanical parameters match the MCR10ERTF3003. Upgrade substitutes are identified where power rating or additional certifications exceed the original specification while maintaining all other parameters. All substitute parts listed maintain identical dimensional specifications and termination count (2 terminations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Status	Features
MCR10ERTF3003	Rohm Semiconductor	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Discontinued	Thick Film
KTR10EZPF3003	Rohm Semiconductor	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200, High Voltage
CR0805-FX-3003ELF	Bourns Inc.	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Moisture Resistant
CRCW0805300KFKEA	Vishay Dale	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200
ERJ-6ENF3003V	Panasonic Electronic Components	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200
RC0805FR-07300KL	YAGEO	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Moisture Resistant
RMCF0805FG300K	Stackpole Electronics Inc	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200
RMCF0805FT300K	Stackpole Electronics Inc	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200
AC0805FR-07300KL	YAGEO	300 kOhms	±1%	0.125	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200, Moisture Resistant
CRCW0805300KFKEAHP	Vishay Dale	300 kOhms	±1%	0.5	0805	±100ppm/°C	-55°C to 155°C	Active	Automotive AEC-Q200, Pulse Withstanding

Engineering Selection Recommendations

Direct substitutes with identical 0.125W power rating and active product status include KTR10EZPF3003 (Rohm Semiconductor), CR0805-FX-3003ELF (Bourns Inc.), CRCW0805300KFKEA (Vishay Dale), ERJ-6ENF3003V (Panasonic Electronic Components), RC0805FR-07300KL (YAGEO), RMCF0805FG300K (Stackpole Electronics Inc), and RMCF0805FT300K (Stackpole Electronics Inc). All maintain full electrical and mechanical compatibility with the MCR10ERTF3003.

For applications requiring enhanced reliability, AC0805FR-07300KL (YAGEO) provides Automotive AEC-Q200 certification combined with moisture resistance while maintaining the original 0.125W specification.

CRCW0805300KFKEAHP (Vishay Dale) functions as an upgrade substitute with increased 0.5W power rating and pulse withstanding capability, suitable for applications with higher transient stress requirements while maintaining all other electrical parameters and AEC-Q200 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use CRCW0805300KFKEAHP as a direct replacement for MCR10ERTF3003?

A: CRCW0805300KFKEAHP is electrically compatible but rated at 0.5W versus the original 0.125W specification. It functions as an upgrade substitute in applications where the higher power rating does not create thermal or space constraints. Verify circuit design allows the increased power dissipation capability.

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

A: Direct substitutes maintain identical electrical specifications (0.125W power rating) and are interchangeable without circuit modification. Upgrade substitutes exceed the original specification (0.5W power rating) and are suitable only when the enhanced capability does not conflict with circuit design parameters.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental compliance of the MCR10ERTF3003.

Q: What does Automotive AEC-Q200 certification indicate?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and quality standards. Parts bearing this certification (KTR10EZPF3003, CRCW0805300KFKEA, ERJ-6ENF3003V, RMCF0805FG300K, RMCF0805FT300K, AC0805FR-07300KL, CRCW0805300KFKEAHP) are suitable for automotive applications requiring enhanced qualification.

Q: Do all substitutes have identical physical dimensions?

A: All substitute parts use the 0805 (2012 Metric) package with identical length (0.079") and width (0.049"). Height varies slightly between manufacturers (0.020" to 0.028" seated maximum), but all remain within standard 0805 package specifications and are PCB-compatible.

Q: Which substitute offers the best moisture resistance?

A: CR0805-FX-3003ELF (Bourns Inc.), RC0805FR-07300KL (YAGEO), and AC0805FR-07300KL (YAGEO) are specified with moisture-resistant features. AC0805FR-07300KL combines moisture resistance with Automotive AEC-Q200 certification.

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