MCR03EZPFX5490 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX5490 is a 549 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.

Substiute Parts

MCR03EZPFX5490

Rohm SemiconductorIn Stock: 1129MCR03EZPFX5490 Datasheet

Current PartRFQ

CRCW0603549RFKEA

Vishay DaleIn Stock: 21767CRCW0603549RFKEA Datasheet

DirectRFQ

ERJ-3EKF5490V

Panasonic Electronic ComponentsIn Stock: 36836ERJ-3EKF5490V Datasheet

DirectRFQ

RMCF0603FT549R

Stackpole Electronics IncIn Stock: 16977RMCF0603FT549R Datasheet

DirectRFQ

CR0603-FX-5490ELF

Bourns Inc.In Stock: 21013CR0603-FX-5490ELF Datasheet

SimilarRFQ

RC0603FR-07549RL

YAGEOIn Stock: 134285RC0603FR-07549RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX5490 is determined by strict equivalence across the following critical parameters:

• Resistance value: 549 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 ~ 155°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Substitute parts are grouped into two categories based on automotive qualification:

Direct Substitutes (Automotive AEC-Q200 Rated): CRCW0603549RFKEA, ERJ-3EKF5490V, RMCF0603FT549R

Similar Substitutes (Non-Automotive Rated): CR0603-FX-5490ELF, RC0603FR-07549RL

Parameter Comparison

Engineering Selection Recommendations

For applications requiring automotive qualification under AEC-Q200 standard, select from the direct substitutes: CRCW0603549RFKEA (Vishay Dale), ERJ-3EKF5490V (Panasonic Electronic Components), or RMCF0603FT549R (Stackpole Electronics Inc). All three maintain full electrical and mechanical equivalence to the MCR03EZPFX5490 while offering active product status and established supply availability.

For non-automotive applications where AEC-Q200 qualification is not required, CR0603-FX-5490ELF (Bourns Inc.) and RC0603FR-07549RL (YAGEO) are functionally equivalent alternatives. Both parts meet all electrical specifications and RoHS3 compliance requirements.

All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-5490ELF or RC0603FR-07549RL as direct replacements for MCR03EZPFX5490 in automotive applications?

A: No. CR0603-FX-5490ELF and RC0603FR-07549RL are not rated for automotive applications under AEC-Q200 standard. For automotive designs, use CRCW0603549RFKEA, ERJ-3EKF5490V, or RMCF0603FT549R.

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

A: All substitute parts share the 0603 (1608 Metric) package specification. Physical dimensions vary slightly within tolerance: length ranges from 0.061" to 0.063" and height from 0.020" to 0.022". These variations are within standard PCB design tolerances for 0603 components.

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

A: Direct substitutes (CRCW0603549RFKEA, ERJ-3EKF5490V, RMCF0603FT549R) carry AEC-Q200 automotive qualification matching the original part. Similar substitutes (CR0603-FX-5490ELF, RC0603FR-07549RL) meet all electrical and mechanical specifications but lack automotive certification.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All substitute parts carry MSL rating of 1 (Unlimited), identical to the original MCR03EZPFX5490, requiring no changes to storage or handling procedures.

Q: Which substitute offers the highest inventory availability?

A: RC0603FR-07549RL (YAGEO) has the highest reported inventory at 134,267 pieces. For automotive-qualified alternatives, ERJ-3EKF5490V (Panasonic) offers 36,809 pieces in stock.