FQP58N08 Equivalent & Substitute Parts

Part Overview

The FQP58N08 is an N-Channel MOSFET manufactured by onsemi, rated for 80V drain-to-source voltage with 57.5A continuous drain current at 25°C. This device is packaged in a Through Hole TO-220-3 configuration and is part of the QFET® series. The FQP58N08 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

FQP58N08

onsemiIn Stock: 18966FQP58N08 Datasheet

Current PartRFQ

PSMN017-80PS,127

Nexperia USA Inc.In Stock: 6937PSMN017-80PS,127 Datasheet

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STP40NF10

STMicroelectronicsIn Stock: 79663STP40NF10 Datasheet

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STP60NF10

STMicroelectronicsIn Stock: 1523STP60NF10 Datasheet

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STP80NF10

STMicroelectronicsIn Stock: 8927STP80NF10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FQP58N08 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• FET Type: N-Channel (all substitutes must be N-Channel)
• Technology: MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): Minimum 80V (substitutes rated at 80V or higher are acceptable)
• Continuous Drain Current (Id): Minimum 50A (substitutes must support the application current requirements)
• Package Type: TO-220-3 Through Hole (mechanical compatibility)
• Gate Threshold Voltage (Vgs(th)): 4V nominal (standard for this device class)
• Operating Temperature Range: -55°C to 175°C (all substitutes meet this range)

Substitution Logic: Substitute parts are grouped based on voltage rating and current capability. Parts rated at 80V with 50A or higher current capacity are direct substitutes. Parts rated at 100V with 50A or higher current capacity are also acceptable substitutes, as the higher voltage rating provides additional design margin while maintaining compatibility with 80V applications. All substitute parts maintain the same TO-220-3 Through Hole package configuration and operate within the same temperature range.

Parameter Comparison

Engineering Selection Recommendations

Product Status Considerations:

The FQP58N08 is classified as obsolete. The following substitute parts are available with active product status:

• STP40NF10 (STMicroelectronics): Active product status. RoHS3 compliant. Rated at 100V, 50A. Suitable for applications where the FQP58N08 current requirement does not exceed 50A.

• STP60NF10 (STMicroelectronics): Active product status. RoHS3 compliant. Rated at 100V, 80A. Provides current capability matching or exceeding the FQP58N08 specification.

• STP80NF10 (STMicroelectronics): Active product status. RoHS3 compliant. Rated at 100V, 80A. Provides current capability matching or exceeding the FQP58N08 specification with lower on-resistance.

Compliance Status:

All substitute parts listed are REACH Unaffected and classified under ECCN EAR99. The STMicroelectronics parts (STP40NF10, STP60NF10, STP80NF10) carry RoHS3 compliance certification. The Nexperia part (PSMN017-80PS,127) is obsolete, similar to the main part.

Voltage Rating Consideration:

The STP series parts are rated at 100V, providing 20V additional margin over the 80V FQP58N08 specification. This higher voltage rating is compatible with 80V applications and offers enhanced design margin without functional compromise.

Frequently Asked Questions (FAQ)

Q: Can the PSMN017-80PS,127 directly replace the FQP58N08?

A: The PSMN017-80PS,127 shares the same 80V voltage rating and provides 50A continuous drain current. However, this part is also classified as obsolete. While electrically compatible for applications not exceeding 50A, it does not provide a long-term solution due to its obsolete status.

Q: What is the difference between the STP40NF10, STP60NF10, and STP80NF10?

A: All three parts are rated at 100V and share the same TO-220 package. The primary differences are continuous drain current (50A for STP40NF10 versus 80A for STP60NF10 and STP80NF10) and on-resistance characteristics. The STP80NF10 offers the lowest on-resistance at 15 mOhm, while the STP40NF10 is rated at 28 mOhm. Selection depends on application current requirements and thermal management considerations.

Q: Are the TO-220-3 and TO-220AB packages mechanically compatible?

A: The TO-220-3, TO-220AB, and TO-220 packages are mechanically compatible for Through Hole mounting applications. All three variants use the same three-lead configuration and pin spacing, allowing direct board-level substitution without layout modification.

Q: Why are the substitute parts rated at 100V instead of 80V?

A: The 100V rating of the STP series parts provides additional design margin and voltage headroom for transient protection. These parts are fully compatible with 80V applications and do not introduce functional issues. The higher voltage rating is a design advantage in applications subject to voltage spikes or transient conditions.

Q: What is the significance of gate charge (Qg) differences among the substitute parts?

A: Gate charge affects switching speed and driver circuit requirements. The PSMN017-80PS,127 has the lowest gate charge at 26 nC, while the STP80NF10 has the highest at 182 nC. Lower gate charge enables faster switching but may require different driver circuit optimization. The FQP58N08 gate charge of 65 nC is intermediate among the substitutes.

Q: Which substitute part is recommended for new designs?

A: For new designs requiring current capability at or above 57.5A, the STP80NF10 is recommended due to its active product status, RoHS3 compliance, and superior on-resistance characteristics. For applications with lower current requirements (50A or less), the STP40NF10 provides a suitable alternative with active product status and compliance certification.

Q: Are all substitute parts RoHS compliant?

A: The STMicroelectronics parts (STP40NF10, STP60NF10, STP80NF10) are RoHS3 compliant. The Nexperia part (PSMN017-80PS,127) does not list RoHS compliance in the provided specifications. All parts are REACH Unaffected.