ERJ-M1WSF15MU Equivalent & Substitute Parts

Part Overview

The ERJ-M1WSF15MU is a 15 mOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This current sense metal element resistor is designed for precision low-resistance applications requiring stable performance across industrial temperature ranges. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

ERJ-M1WSF15MU

Panasonic Electronic ComponentsIn Stock: 1011ERJ-M1WSF15MU Datasheet

Current PartRFQ

PF2512FKF070R015L

YAGEOIn Stock: 1170PF2512FKF070R015L Datasheet

DirectRFQ

PF2512FKF070R015Z

YAGEOIn Stock: 1142PF2512FKF070R015Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-M1WSF15MU are qualified based on the following electrical and mechanical parameters:

• Resistance value: 15 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Package: 2512 (6432 Metric)
• Temperature coefficient: ±100ppm/°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The identified substitutes are YAGEO PF series metal foil resistors (PF2512FKF070R015L and PF2512FKF070R015Z), which meet all critical electrical specifications. These parts utilize metal foil composition with moisture-resistant properties, providing equivalent performance in current sense applications.

Parameter Comparison

Engineering Selection Recommendations

Both YAGEO PF2512FKF070R015L and PF2512FKF070R015Z are qualified substitutes for the obsolete ERJ-M1WSF15MU. Selection between these options should be based on product status and supply chain considerations:

PF2512FKF070R015Z is the preferred choice for new designs and ongoing production due to its active product status, ensuring long-term availability and supply chain stability.

PF2512FKF070R015L remains available as an alternative, though classified as obsolete. This part may be suitable for legacy system maintenance where existing inventory exists.

Both substitutes maintain ROHS3 compliance and MSL 1 rating, meeting regulatory and environmental requirements equivalent to the original part. The operating temperature range of -55°C to 155°C covers the majority of industrial applications, with the exception of designs requiring the full -55°C to 170°C range of the original Panasonic part.

Frequently Asked Questions (FAQ)

Q: Can PF2512FKF070R015L and PF2512FKF070R015Z be used interchangeably with ERJ-M1WSF15MU?

A: Both YAGEO parts meet the critical electrical specifications (15 mOhms ±1%, 1W, ±100ppm/°C) and package requirements (2512 metric). They are mechanically and electrically compatible for standard current sense applications. The primary difference is product status; PF2512FKF070R015Z is active production while PF2512FKF070R015L is obsolete.

Q: What is the difference between metal element and metal foil composition?

A: Both compositions are suitable for current sense applications at the specified resistance and tolerance values. Metal foil resistors in the YAGEO PF series include moisture-resistant properties, providing enhanced environmental protection compared to the metal element construction of the original Panasonic part.

Q: Are there temperature range limitations when substituting?

A: The YAGEO substitutes operate from -55°C to 155°C, compared to the original part's -55°C to 170°C range. Applications requiring operation above 155°C are not suitable for these substitutes.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both PF2512FKF070R015L and PF2512FKF070R015Z are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the original ERJ-M1WSF15MU specifications.

Q: What packaging options are available for the substitute parts?

A: Both YAGEO substitutes are supplied in Tape & Reel (TR) packaging format.