MCR03EZPFX2490 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX2490 is a 249 Ohm ±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

MCR03EZPFX2490

Rohm SemiconductorIn Stock: 4799MCR03EZPFX2490 Datasheet

Current PartRFQ

CRCW0603249RFKEA

Vishay DaleIn Stock: 96255CRCW0603249RFKEA Datasheet

DirectRFQ

CRCW0603249RFKEB

Vishay DaleIn Stock: 38639CRCW0603249RFKEB Datasheet

DirectRFQ

ERJ-3EKF2490V

Panasonic Electronic ComponentsIn Stock: 118198ERJ-3EKF2490V Datasheet

DirectRFQ

RMCF0603FT249R

Stackpole Electronics IncIn Stock: 54333RMCF0603FT249R Datasheet

DirectRFQ

CR0603-FX-2490ELF

Bourns Inc.In Stock: 26339CR0603-FX-2490ELF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX2490 is determined by strict equivalence across the following parameters:

• Resistance value: 249 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
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

All substitute parts listed meet these electrical and mechanical specifications. Packaging format (Cut Tape, Tape & Reel) may vary based on procurement requirements but does not affect electrical performance or board-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the discontinued MCR03EZPFX2490, the following parts are recommended based on product status and compliance:

Primary Substitutes (Active Status, AEC-Q200 Rated):

• ERJ-3EKF2490V (Panasonic) - Active product with full automotive qualification
• RMCF0603FT249R (Stackpole) - Active product with full automotive qualification
• CRCW0603249RFKEA (Vishay Dale) - Active product with full automotive qualification

Secondary Substitute (Active Status, Moisture Resistant):

• CR0603-FX-2490ELF (Bourns) - Active product with moisture resistant construction; lacks AEC-Q200 automotive rating

All primary substitutes maintain identical electrical specifications and automotive compliance. Selection between primary options may be based on packaging format preference (Cut Tape vs. Tape & Reel) and supplier availability. The Bourns CR0603-FX-2490ELF is suitable for non-automotive applications or where moisture resistance is prioritized over automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-2490ELF as a direct replacement for MCR03EZPFX2490 in automotive applications?

A: CR0603-FX-2490ELF is not recommended for automotive applications requiring AEC-Q200 certification. While it meets all electrical and mechanical specifications, it lacks automotive qualification. Use ERJ-3EKF2490V, RMCF0603FT249R, or CRCW0603249RFKEA for automotive designs.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Both packaging formats contain identical components. Cut Tape & Digi-Reel is suitable for lower-volume applications and manual assembly. Tape & Reel is optimized for high-volume automated pick-and-place assembly. Electrical performance and board-level compatibility are identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and meet the same environmental standards as the original MCR03EZPFX2490.

Q: Can I mix different manufacturers' parts in the same production run?

A: Yes. All substitute parts meet identical electrical specifications (249 Ω ±1%, 0.1W, 0603 package, ±100ppm/°C, -55°C ~ 155°C). They are electrically and mechanically interchangeable at the board level. Procurement and quality documentation should reflect the specific manufacturer part number used.

Q: What is the significance of the ±100ppm/°C temperature coefficient?

A: Temperature coefficient defines resistance change over the operating temperature range. ±100ppm/°C means the resistance will vary by approximately ±1.5% across the full -55°C to 155°C operating range. All listed parts share this specification, ensuring consistent circuit performance across temperature extremes.