MCR03EZPFX6650 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX6650 is a 665 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, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for seamless board-level substitution.

Substiute Parts

MCR03EZPFX6650

Rohm SemiconductorIn Stock: 706MCR03EZPFX6650 Datasheet

Current PartRFQ

CRCW0603665RFKEA

Vishay DaleIn Stock: 16597CRCW0603665RFKEA Datasheet

DirectRFQ

ERJ-3EKF6650V

Panasonic Electronic ComponentsIn Stock: 112788ERJ-3EKF6650V Datasheet

DirectRFQ

RMCF0603FT665R

Stackpole Electronics IncIn Stock: 97089RMCF0603FT665R Datasheet

DirectRFQ

CR0603-FX-6650ELF

Bourns Inc.In Stock: 25865CR0603-FX-6650ELF Datasheet

SimilarRFQ

RC0603FR-07665RL

YAGEOIn Stock: 114548RC0603FR-07665RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCR03EZPFX6650 is determined by strict equivalence across the following parameters: resistance value (665 Ohms), 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 (ROHS3, REACH Unaffected).

Substitute parts are categorized into two groups:

Direct Equivalents (Automotive AEC-Q200 Rated): CRCW0603665RFKEA (Vishay Dale), ERJ-3EKF6650V (Panasonic Electronic Components), and RMCF0603FT665R (Stackpole Electronics Inc). These parts maintain full automotive qualification and are functionally identical across all specified parameters.

Similar Equivalents (Moisture Resistant, Non-Automotive Rated): CR0603-FX-6650ELF (Bourns Inc.) and RC0603FR-07665RL (YAGEO). These parts match all electrical and mechanical specifications but feature moisture-resistant construction instead of automotive AEC-Q200 certification. Selection of these alternatives requires application-level assessment of automotive qualification requirements.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring automotive AEC-Q200 certification, select from the direct equivalent group: CRCW0603665RFKEA, ERJ-3EKF6650V, or RMCF0603FT665R. All three maintain full compliance with automotive qualification standards and are currently in active production status with substantial inventory availability.

For non-automotive applications or where automotive certification is not a design requirement, CR0603-FX-6650ELF and RC0603FR-07665RL provide functionally equivalent performance with moisture-resistant construction. These alternatives are also in active production status.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the original MCR03EZPFX6650.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-6650ELF or RC0603FR-07665RL as direct replacements for MCR03EZPFX6650 in automotive applications?

A: CR0603-FX-6650ELF and RC0603FR-07665RL are electrically and mechanically equivalent but lack AEC-Q200 automotive certification. Use these only if your application does not require automotive qualification. For automotive designs, select CRCW0603665RFKEA, ERJ-3EKF6650V, or RMCF0603FT665R.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in 0603 (1608 Metric) package with identical footprint dimensions and two terminations, ensuring direct PCB compatibility without layout modifications.

Q: What is the difference between the direct equivalents (CRCW0603665RFKEA, ERJ-3EKF6650V, RMCF0603FT665R)?

A: All three direct equivalents meet identical electrical specifications and AEC-Q200 automotive certification. Selection among them is based on manufacturer preference, supply chain availability, and packaging format (all supplied in Tape & Reel).

Q: Do all substitute parts meet the same temperature coefficient specification?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, matching the original MCR03EZPFX6650 specification.

Q: Are there any dimensional differences between the main part and substitutes?

A: Minor dimensional variations exist within the 0603 package tolerance. MCR03EZPFX6650, ERJ-3EKF6650V, CR0603-FX-6650ELF, and RC0603FR-07665RL measure 0.063" L × 0.031" W (1.60mm × 0.80mm). CRCW0603665RFKEA and RMCF0603FT665R measure 0.061" L × 0.033" W (1.55mm × 0.85mm) and 0.061" L × 0.031" W (1.55mm × 0.80mm) respectively. All variations remain within standard 0603 package specifications and are PCB compatible.