FDMA520PZ Equivalent & Substitute Parts

Part Overview

The FDMA520PZ is a P-Channel MOSFET manufactured by onsemi, rated for 20V drain-to-source voltage with 7.3A continuous drain current at 25°C. The device is packaged in a 6-MicroFET (2x2) surface mount configuration and features a maximum on-resistance of 30mOhm at 7.3A and 4.5V gate-source voltage. The FDMA520PZ is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Identifying compatible alternatives ensures design continuity and supply chain flexibility while maintaining electrical and mechanical compatibility.

Substiute Parts

FDMA520PZ

onsemiIn Stock: 37530FDMA520PZ Datasheet

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PMPB29XPE,115

Nexperia USA Inc.In Stock: 15330PMPB29XPE,115 Datasheet

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PMPB30XPEX

Nexperia USA Inc.In Stock: 3983PMPB30XPEX Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FDMA520PZ are identified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• FET Type: P-Channel topology required
• Drain to Source Voltage (Vdss): Minimum 20V rating
• Gate-Source Voltage (Vgs Max): ±12V or compatible range
• Operating Temperature Range: -55°C to 150°C (TJ) or equivalent
• RoHS3 Compliance and MSL Level 1 rating

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package Configuration: 6-pin surface mount variants (6-WDFN, 6-UDFN, or equivalent)

Performance Considerations:

• Continuous Drain Current (Id): Rated at or above 5A minimum
• On-Resistance (Rds On): Comparable performance at specified gate-source voltage

The PMPB29XPE,115 meets all electrical and mechanical compatibility requirements with active product status. The PMPB30XPEX is listed as a substitute but contains incomplete specification data, limiting full compatibility verification.

Parameter Comparison

Engineering Selection Recommendations

PMPB29XPE,115 (Nexperia USA Inc.):

The PMPB29XPE,115 is the primary substitute for the FDMA520PZ. Both devices share identical Vdss (20V), Vgs (Max) (±12V), and operating temperature range (-55°C to 150°C TJ). The PMPB29XPE,115 is classified as Active product status, ensuring ongoing availability and supply chain support. Both parts maintain ROHS3 compliance and MSL Level 1 rating. The continuous drain current of the PMPB29XPE,115 is rated at 5A (Ta), which is lower than the FDMA520PZ at 7.3A (Ta). The on-resistance specification of 32.5mOhm at 5A and 4.5V is comparable to the FDMA520PZ at 30mOhm at 7.3A and 4.5V. Package differences exist: FDMA520PZ uses 6-WDFN while PMPB29XPE,115 uses 6-UDFN, both with exposed pads. Circuit designs operating at or below 5A continuous drain current can directly substitute the PMPB29XPE,115 for the FDMA520PZ.

PMPB30XPEX (Nexperia USA Inc.):

The PMPB30XPEX is listed as a substitute but contains incomplete electrical specification data. Critical parameters including FET type confirmation, Vdss rating, Rds On characteristics, and operating temperature range are not provided. The continuous drain current is specified as 8.5A (Tj), and Vgs (Max) is listed as +8V and -12V, which differs from the FDMA520PZ symmetric ±12V rating. The package and mounting type information is not available. Due to incomplete specifications, the PMPB30XPEX cannot be fully evaluated for compatibility without additional technical documentation.

Frequently Asked Questions (FAQ)

Q: Can the PMPB29XPE,115 directly replace the FDMA520PZ in all applications?

A: The PMPB29XPE,115 is electrically compatible with the FDMA520PZ for applications requiring continuous drain current at or below 5A. Both devices share the same Vdss (20V), Vgs (Max) (±12V), and operating temperature range. However, applications requiring the full 7.3A continuous drain current of the FDMA520PZ cannot use the PMPB29XPE,115 without circuit redesign. Package differences (6-WDFN versus 6-UDFN) require PCB layout verification for mechanical fit.

Q: What are the key differences between the FDMA520PZ and PMPB29XPE,115?

A: The primary differences are continuous drain current rating (7.3A versus 5A at 25°C), product status (Obsolete versus Active), and package type (6-WDFN versus 6-UDFN). Both maintain identical voltage ratings, temperature range, and compliance certifications. The on-resistance specifications are comparable at their respective rated currents.

Q: Is the PMPB30XPEX a suitable substitute?

A: The PMPB30XPEX cannot be confirmed as a suitable substitute due to incomplete specification data. Critical electrical parameters including Vdss, Rds On, and operating temperature range are not provided. The Vgs (Max) specification (+8V, -12V) differs from the FDMA520PZ (±12V). Complete technical documentation is required before considering this part for substitution.

Q: Are there package compatibility concerns when substituting the PMPB29XPE,115?

A: Yes. The FDMA520PZ uses a 6-WDFN package while the PMPB29XPE,115 uses a 6-UDFN package. Although both are 6-pin surface mount configurations with exposed pads, physical dimensions and PCB footprints differ. PCB layout verification is required to confirm mechanical fit and thermal performance before implementation.

Q: Do both substitute parts maintain RoHS3 compliance?

A: Yes. Both the PMPB29XPE,115 and PMPB30XPEX are ROHS3 compliant with MSL Level 1 rating, matching the FDMA520PZ compliance status.

Q: What is the impact of the lower continuous drain current rating on the PMPB29XPE,115?

A: The PMPB29XPE,115 is rated for 5A continuous drain current compared to the FDMA520PZ at 7.3A. Applications operating above 5A continuous drain current require alternative solutions or circuit redesign. For applications within the 5A limit, the PMPB29XPE,115 provides equivalent performance with comparable on-resistance characteristics.