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ERJ-MP4PF22MU Equivalent & Substitute Parts
Part Overview
The ERJ-MP4PF22MU is a 22 mOhms ±1% 2W 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 part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring this specific resistance value and power rating.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 22 mOhms |
| Tolerance | ±1% |
| Power Rating | 2W |
| Package | 2512 (6432 Metric) |
| Composition | Metal Element |
| Temperature Coefficient | ±75ppm/°C |
| Operating Temperature Range | -65°C ~ 170°C |
| Automotive Rating | AEC-Q200 |
| Moisture Sensitivity Level | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution for the ERJ-MP4PF22MU is determined by strict equivalence across the following critical parameters:
- Resistance value: 22 mOhms
- Tolerance: ±1%
- Power rating: 2W
- Package type: 2512 (6432 Metric)
- Temperature coefficient: ±75ppm/°C
- Automotive qualification: AEC-Q200
- Moisture sensitivity level: 1 (Unlimited)
- RoHS compliance: ROHS3 Compliant
Two substitute parts meet these criteria. The PE2512FKM7W0R022L from YAGEO is a direct functional equivalent with metal film composition and active product status. The WSL2512R0220FEA18 from Vishay Dale is an upgrade option with enhanced pulse withstanding capability while maintaining all core electrical and mechanical specifications.
Parameter Comparison
| Parameter | ERJ-MP4PF22MU (Panasonic) | PE2512FKM7W0R022L (YAGEO) | WSL2512R0220FEA18 (Vishay Dale) |
|---|---|---|---|
| Resistance | 22 mOhms | 22 mOhms | 22 mOhms |
| Tolerance | ±1% | ±1% | ±1% |
| Power Rating | 2W | 2W | 2W |
| Package | 2512 (6432 Metric) | 2512 (6432 Metric) | 2512 (6432 Metric) |
| Composition | Metal Element | Metal Film | Metal Element |
| Temperature Coefficient | ±75ppm/°C | ±75ppm/°C | ±75ppm/°C |
| Operating Temperature | -65°C ~ 170°C | -55°C ~ 170°C | -65°C ~ 170°C |
| AEC-Q200 Rating | Yes | Yes | Yes |
| Moisture Resistant | Yes | No | Yes |
| Pulse Withstanding | No | No | Yes |
| Product Status | Obsolete | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Both substitute parts are active products with full AEC-Q200 automotive qualification and ROHS3 compliance, making them suitable replacements for the obsolete ERJ-MP4PF22MU.
The PE2512FKM7W0R022L from YAGEO provides direct functional equivalence with identical electrical specifications. This option is appropriate for applications where the original metal element composition is not a critical requirement and the operating temperature range does not extend below -55°C.
The WSL2512R0220FEA18 from Vishay Dale maintains metal element composition matching the original part and extends full temperature range coverage to -65°C. The addition of pulse withstanding capability provides enhanced robustness for transient current events. This option is recommended for applications requiring maximum compatibility with the original design specifications and enhanced reliability margins.
Frequently Asked Questions (FAQ)
Q: Can PE2512FKM7W0R022L be used as a direct replacement for ERJ-MP4PF22MU?
A: Yes. Both parts meet the core substitution criteria: 22 mOhms ±1% resistance, 2W power rating, 2512 package, ±75ppm/°C temperature coefficient, AEC-Q200 qualification, and ROHS3 compliance. The metal film composition of the YAGEO part differs from the original metal element, but electrical performance is equivalent for current sense applications. The operating temperature range is -55°C to 170°C versus -65°C to 170°C for the original.
Q: What is the difference between the two substitute options?
A: The PE2512FKM7W0R022L uses metal film composition, while the WSL2512R0220FEA18 uses metal element composition matching the original ERJ-MP4PF22MU. The Vishay Dale part adds pulse withstanding capability and maintains the full -65°C lower temperature limit. Both are AEC-Q200 qualified and ROHS3 compliant.
Q: Are all three parts pin-compatible?
A: Yes. All three parts use the 2512 (6432 Metric) package with identical footprint dimensions and two terminations, ensuring direct PCB compatibility.
Q: Which substitute should be selected for new designs?
A: Selection depends on application requirements. For standard current sense applications without extreme low-temperature operation, the PE2512FKM7W0R022L offers cost-effective equivalence. For applications requiring maximum design margin, full temperature range coverage, and enhanced transient protection, the WSL2512R0220FEA18 is the preferred option.
Q: Are moisture-resistant properties critical for substitution?
A: The original ERJ-MP4PF22MU includes moisture-resistant construction. The PE2512FKM7W0R022L does not specify this feature. The WSL2512R0220FEA18 maintains moisture-resistant properties. For applications in high-humidity or harsh environments, the Vishay Dale part is the appropriate choice.
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