ERJ-MP4MF50MU Equivalent & Substitute Parts

Part Overview

The ERJ-MP4MF50MU is a 50 mOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This metal element current sense resistor is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

ERJ-MP4MF50MU

Panasonic Electronic ComponentsIn Stock: 809ERJ-MP4MF50MU Datasheet

Current PartRFQ

PE2512FKM070R05L

YAGEOIn Stock: 4324PE2512FKM070R05L Datasheet

DirectRFQ

WSL2512R0500FEA

Vishay DaleIn Stock: 131291WSL2512R0500FEA Datasheet

UpgradeRFQ

WSLS2512R0500FHEB

Vishay DaleIn Stock: 2269WSLS2512R0500FHEB Datasheet

UpgradeRFQ

CRA2512-FZ-R050ELF

Bourns Inc.In Stock: 3391CRA2512-FZ-R050ELF Datasheet

SimilarRFQ

WSLT2512R0500FEA

Vishay DaleIn Stock: 5735WSLT2512R0500FEA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ERJ-MP4MF50MU is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 mOhms
• Tolerance: ±1%
• Power rating: 1W (minimum)
• Package: 2512 (6432 Metric)
• Automotive qualification: AEC-Q200
• RoHS3 compliance
• Moisture Sensitivity Level: 1

Substitute parts are grouped into three categories based on their relationship to the original specification:

Direct Equivalents maintain all electrical and mechanical parameters within the original specification envelope.

Upgrade Options exceed the original specification in performance characteristics (enhanced temperature range, additional protective features) while maintaining full backward compatibility.

Similar Parts deviate in one or more parameters (power rating, temperature coefficient, operating temperature range) and require engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended for Direct Replacement):

WSL2512R0500FEA (Vishay Dale) provides the closest functional equivalence to the obsolete ERJ-MP4MF50MU. This part maintains identical electrical specifications (50 mOhms, ±1%, 1W), matching composition (metal element), temperature coefficient (±75ppm/°C), and operating temperature range (-65°C ~ 170°C). Both parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. The part is in active production with substantial inventory availability (131,217 pcs).

Upgrade Option (Enhanced Performance):

WSLT2512R0500FEA (Vishay Dale) offers extended operating temperature range (-65°C ~ 275°C) while maintaining all other electrical and mechanical parameters. This part is suitable for applications requiring higher temperature performance margins. Active production status and adequate inventory support (5,723 pcs) enable immediate sourcing.

Alternative Direct Equivalent:

PE2512FKM070R05L (YAGEO) meets the electrical specification (50 mOhms, ±1%, 1W) with metal film composition instead of metal element. Operating temperature range is -55°C ~ 170°C, which is 10°C lower at the minimum end compared to the original. AEC-Q200 qualification and ROHS3 compliance are maintained. High inventory availability (4,255 pcs) supports production needs.

Similar Part (Power Rating Upgrade):

CRA2512-FZ-R050ELF (Bourns Inc.) provides 3W power rating with 50 mOhms resistance and ±1% tolerance. Temperature coefficient is ±50ppm/°C (tighter than original ±75ppm/°C). Operating temperature range is -55°C ~ 170°C. This part is suitable for applications where higher power dissipation capability is beneficial. AEC-Q200 and ROHS3 compliance are maintained.

Packaging Consideration:

WSLS2512R0500FHEB (Vishay Dale) is identical to WSL2512R0500FEA except for Cut Tape packaging instead of Tape & Reel. This option is available for applications requiring cut tape format (2,170 pcs inventory).

Frequently Asked Questions (FAQ)

Q: Can PE2512FKM070R05L replace ERJ-MP4MF50MU directly?

A: PE2512FKM070R05L meets the electrical specification (50 mOhms, ±1%, 1W) and maintains AEC-Q200 qualification. The primary difference is metal film composition versus metal element, and minimum operating temperature of -55°C versus -65°C. For applications operating above -55°C, this part is functionally equivalent.

Q: What is the difference between WSL2512R0500FEA and WSLS2512R0500FHEB?

A: Both parts are electrically and mechanically identical. The difference is packaging format: WSL2512R0500FEA is supplied in Tape & Reel format, while WSLS2512R0500FHEB is supplied in Cut Tape format. Select based on assembly equipment requirements.

Q: Why is CRA2512-FZ-R050ELF listed as a similar part rather than a direct substitute?

A: CRA2512-FZ-R050ELF has a 3W power rating compared to the original 1W specification, and a ±50ppm/°C temperature coefficient versus ±75ppm/°C. While these represent performance improvements, they constitute specification deviations. The part is suitable for applications where higher power dissipation is required.

Q: Is WSLT2512R0500FEA compatible with the original design?

A: WSLT2512R0500FEA is fully compatible with ERJ-MP4MF50MU for all electrical and mechanical parameters. The extended operating temperature range (-65°C ~ 275°C) provides additional thermal margin without affecting performance in the original operating window.

Q: Are all substitute parts AEC-Q200 qualified?

A: All listed substitute parts carry AEC-Q200 automotive qualification, matching the original part specification.

Q: What is the inventory status for immediate sourcing?

A: WSL2512R0500FEA has the highest inventory availability (131,217 pcs), followed by PE2512FKM070R05L (4,255 pcs), CRA2512-FZ-R050ELF (3,316 pcs), WSLT2512R0500FEA (5,723 pcs), and WSLS2512R0500FHEB (2,170 pcs). All parts are in active production.