MCR03EZPFX5110 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX5110 is a 511 Ohms ±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	511 Ohms
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
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX5110 is determined by strict equivalence across the following parameters: resistance value (511 Ohms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional interchangeability in automotive and general-purpose applications.

The substitute parts are grouped into two categories: Direct Substitutes (electrically and mechanically identical with active product status) and Similar Substitutes (electrically equivalent with minor feature variations).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op. Temp Range	RoHS Status	Product Status
MCR03EZPFX5110	Rohm Semiconductor	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Discontinued
CRCW0603511RFKEA	Vishay Dale	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Active
CRCW0603511RFKTA	Vishay Dale	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Non-compliant	Active
ERJ-3EKF5110V	Panasonic Electronic Components	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Active
RMCF0603FT511R	Stackpole Electronics Inc	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Active
CR0603-FX-5110ELF	Bourns Inc.	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Active
RC0603FR-07511RL	YAGEO	511 Ω	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	Active

Engineering Selection Recommendations

For applications requiring ROHS3 compliance and active product status, the recommended direct substitutes are CRCW0603511RFKEA (Vishay Dale), ERJ-3EKF5110V (Panasonic), RMCF0603FT511R (Stackpole Electronics), CR0603-FX-5110ELF (Bourns), and RC0603FR-07511RL (YAGEO). All maintain full electrical and mechanical equivalence to the original MCR03EZPFX5110.

CRCW0603511RFKTA (Vishay Dale) is electrically equivalent but carries RoHS non-compliance and REACH-affected status, making it unsuitable for applications with regulatory compliance requirements.

For automotive applications requiring AEC-Q200 certification, CRCW0603511RFKEA, ERJ-3EKF5110V, and RMCF0603FT511R are certified options. CR0603-FX-5110ELF and RC0603FR-07511RL are moisture-resistant alternatives without explicit AEC-Q200 rating but maintain equivalent electrical performance and temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the MCR03EZPFX5110?

A: All listed substitute parts share identical resistance (511 Ohms), tolerance (±1%), power rating (0.1W), package (0603), and temperature specifications. Physical and electrical interchangeability is confirmed for all active parts. CRCW0603511RFKTA differs in compliance status and should be evaluated against your regulatory requirements.

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

A: Direct Substitutes (CRCW0603511RFKEA, CRCW0603511RFKTA, ERJ-3EKF5110V, RMCF0603FT511R) carry AEC-Q200 automotive certification matching the original part. Similar Substitutes (CR0603-FX-5110ELF, RC0603FR-07511RL) are moisture-resistant thick film resistors without explicit AEC-Q200 rating but maintain equivalent electrical and thermal performance.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within tolerance. The MCR03EZPFX5110, ERJ-3EKF5110V, CR0603-FX-5110ELF, and RC0603FR-07511RL measure 0.063" L × 0.031" W with 0.022" maximum height. CRCW0603511RFKEA and CRCW0603511RFKTA measure 0.061" L × 0.033" W with 0.020" maximum height. RMCF0603FT511R measures 0.061" L × 0.031" W with 0.022" maximum height. All dimensions fall within 0603 package specifications and are suitable for standard PCB layouts.

Q: Which substitute offers the best availability?

A: RMCF0603FT511R (Stackpole Electronics) shows the highest inventory at 403,173 pieces. CRCW0603511RFKEA (Vishay Dale) has 89,404 pieces available. ERJ-3EKF5110V (Panasonic) has 105,732 pieces. All three maintain active product status with substantial stock levels.

Q: What compliance certifications should I verify for my application?

A: Confirm RoHS compliance requirements (ROHS3 Compliant vs. Non-compliant), REACH status (Unaffected vs. Affected), and AEC-Q200 automotive certification if applicable to your end-use. All active substitutes except CRCW0603511RFKTA meet ROHS3 and REACH Unaffected criteria.

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