MCR03EZPFX4323 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX4323 is a 432 kOhms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets automotive AEC-Q200 qualification and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Substiute Parts

MCR03EZPFX4323

Rohm SemiconductorIn Stock: 1240MCR03EZPFX4323 Datasheet

Current PartRFQ

CRCW0603432KFKEA

Vishay DaleIn Stock: 27030CRCW0603432KFKEA Datasheet

DirectRFQ

ERJ-3EKF4323V

Panasonic Electronic ComponentsIn Stock: 42579ERJ-3EKF4323V Datasheet

DirectRFQ

RC0603FR-07432KL

YAGEOIn Stock: 130939RC0603FR-07432KL Datasheet

DirectRFQ

RMCF0603FT432K

Stackpole Electronics IncIn Stock: 15197RMCF0603FT432K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCR03EZPFX4323 is determined by strict equivalence across the following parameters:

• Resistance value: 432 kOhms
• Tolerance: ±1%
• Power rating: 0.1W
• Package designation: 0603 (1608 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Termination count: 2
• RoHS compliance: ROHS3

All identified substitute parts meet these electrical and mechanical specifications. Physical dimensions show minor variations within acceptable tolerances for PCB assembly. Packaging format (Cut Tape, Digi-Reel, or Tape & Reel) does not affect electrical equivalence but may influence procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are electrically and mechanically equivalent to the MCR03EZPFX4323. Selection among these alternatives should be based on:

Product Status: CRCW0603432KFKEA (Vishay Dale), ERJ-3EKF4323V (Panasonic), RC0603FR-07432KL (YAGEO), and RMCF0603FT432K (Stackpole) are all active products with confirmed inventory availability, ensuring long-term supply chain continuity.

Compliance & Certifications: CRCW0603432KFKEA, ERJ-3EKF4323V, and RMCF0603FT432K carry automotive AEC-Q200 qualification, matching the original part's automotive-grade specification. RC0603FR-07432KL features moisture-resistant composition without explicit AEC-Q200 rating.

Inventory Availability: RC0603FR-07432KL offers the highest stock level (130,881 pcs), followed by ERJ-3EKF4323V (42,545 pcs), CRCW0603432KFKEA (27,016 pcs), and RMCF0603FT432K (15,142 pcs).

Physical Dimensions: All parts fit the 0603 package footprint. Minor dimensional variations (length 1.55–1.60mm, width 0.80–0.85mm, height 0.50–0.55mm) are within standard PCB assembly tolerances.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for MCR03EZPFX4323?

A: Yes. All four substitute parts meet the electrical specifications (432 kOhms ±1%, 0.1W, ±100ppm/°C, -55°C to 155°C) and physical package requirements (0603 1608 Metric) of the original part. No circuit redesign is required.

Q: Does the difference between AEC-Q200 rated and non-AEC-Q200 parts matter?

A: This depends on application requirements. If your design specifies automotive-grade components, use CRCW0603432KFKEA, ERJ-3EKF4323V, or RMCF0603FT432K. RC0603FR-07432KL is suitable for non-automotive applications or where automotive qualification is not mandated.

Q: Are there physical dimension differences that affect PCB assembly?

A: Minor variations exist within the 0603 package specification. All parts are within standard PCB assembly tolerances. Length ranges from 1.55–1.60mm, width from 0.80–0.85mm, and height from 0.50–0.55mm. These variations do not impact soldering or component placement.

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

A: These are packaging and delivery formats that do not affect electrical performance. Cut Tape and Digi-Reel are suitable for smaller quantities and manual assembly. Tape & Reel is optimized for high-volume automated assembly. Select based on procurement volume and assembly process requirements.

Q: Which substitute part should I choose for highest availability?

A: RC0603FR-07432KL offers the largest inventory (130,881 pcs). If automotive AEC-Q200 qualification is required, ERJ-3EKF4323V provides the next highest availability (42,545 pcs).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts are ROHS3 compliant with MSL rating 1 (Unlimited), matching the original MCR03EZPFX4323 specifications.