FDP7030L Equivalent & Substitute Parts

Part Overview

The FDP7030L is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with 80A continuous drain current in a Through Hole TO-220-3 package. This device is part of the PowerTrench® series and is classified as Obsolete. Due to its obsolete status, equivalent substitute parts are necessary for new designs and ongoing production requirements. Substitute devices must maintain electrical compatibility across critical parameters including voltage rating, current capacity, and thermal characteristics while accommodating the Through Hole TO-220 package form factor.

Substiute Parts

FDP7030L

onsemiIn Stock: 46225FDP7030L Datasheet

Current PartRFQ

STP70NS04ZC

STMicroelectronicsIn Stock: 8301STP70NS04ZC Datasheet

SimilarRFQ

STP90NF03L

STMicroelectronicsIn Stock: 35428STP90NF03L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FDP7030L is determined by the following critical parameters:

Voltage Compatibility: Substitute devices must have a Drain to Source Voltage (Vdss) rating equal to or greater than 30V to ensure safe operation within the original design envelope.

Current Capacity: Substitute devices must support continuous drain current (Id) at or above 80A to maintain equivalent current-handling capability.

On-State Resistance (Rds On): Substitute devices must not exceed the maximum on-state resistance of the original part to prevent excessive power dissipation and thermal stress.

Package Form Factor: All substitute devices must utilize Through Hole TO-220 package variants to ensure mechanical and thermal compatibility with existing PCB layouts and heatsinking arrangements.

Gate Charge and Input Capacitance: These parameters influence switching speed and gate drive requirements; substitutes with comparable values ensure consistent circuit performance.

Operating Temperature Range: Substitute devices must support the full operating temperature range of -65°C to 175°C to maintain reliability across all environmental conditions.

Parameter Comparison

Engineering Selection Recommendations

STP90NF03L (STMicroelectronics) is the primary substitute for the FDP7030L. This device matches the 30V voltage rating and exceeds the 80A current requirement with 90A continuous drain current. The on-state resistance of 6.5 mOhm at 45A, 10V is superior to the original 7 mOhm specification, resulting in lower power dissipation. The operating temperature range of -65°C to 175°C is identical to the original part. The STP90NF03L is ROHS3 compliant and carries STripFET™ series designation. However, this device is classified as "Not For New Designs," indicating it may have limited long-term availability. Inventory of 35,400 pieces is currently available.

STP70NS04ZC (STMicroelectronics) is a secondary substitute option. This device provides a 33V voltage rating, exceeding the original 30V specification, and maintains the 80A continuous drain current requirement. The on-state resistance of 11 mOhm at 40A, 10V is higher than the original specification, resulting in increased power dissipation. The power dissipation rating of 180W significantly exceeds the original 68W, providing thermal margin. The operating temperature range extends to -55°C minimum, which is 10°C higher than the original -65°C specification. This device is Active status and ROHS3 compliant, with 8,200 pieces in inventory.

For applications requiring strict adherence to the original -65°C lower temperature limit, the STP90NF03L is the appropriate selection. For applications with relaxed low-temperature requirements and higher thermal dissipation capability, the STP70NS04ZC provides an active-status alternative.

Frequently Asked Questions (FAQ)

Q: Can the STP90NF03L directly replace the FDP7030L in existing designs?

A: Yes, the STP90NF03L is electrically compatible with the FDP7030L. Both devices share the same 30V voltage rating, support 80A or greater continuous drain current, and utilize Through Hole TO-220 package variants. The superior on-state resistance (6.5 mOhm vs. 7 mOhm) and higher current rating (90A vs. 80A) make it a direct functional replacement. No circuit modifications are required.

Q: What is the significance of the higher gate charge (Qg) in the STP70NS04ZC?

A: The STP70NS04ZC exhibits a gate charge of 58 nC at 10V, compared to 33 nC at 5V for the FDP7030L. Higher gate charge requires greater gate drive energy and may result in slower switching transitions. This parameter must be evaluated in the context of the gate driver circuit's current capability and the application's switching frequency requirements.

Q: Why does the STP70NS04ZC have a higher minimum operating temperature limit?

A: The STP70NS04ZC specifies a minimum operating temperature of -55°C, whereas the FDP7030L and STP90NF03L support -65°C. This 10°C difference reflects different device design and qualification standards between manufacturers. Applications requiring operation below -55°C must use the STP90NF03L or FDP7030L.

Q: Are both substitute parts available in the same package configuration?

A: Both substitute parts utilize Through Hole TO-220 package variants, which are mechanically compatible with the original TO-220-3 package. The TO-220 and TO-220-3 designations refer to the same physical form factor with three leads (Gate, Drain, Source). PCB layouts and heatsinking arrangements designed for the FDP7030L accommodate both substitute devices without modification.

Q: What is the impact of the lower input capacitance (Ciss) in the STP70NS04ZC?

A: The STP70NS04ZC exhibits an input capacitance of 1930 pF at 25V, compared to 2440 pF at 15V for the FDP7030L. Lower input capacitance reduces the gate charge required for switching and may improve switching speed. This characteristic is beneficial in high-frequency applications and reduces gate driver stress.

Q: Should I consider the product status when selecting a substitute?

A: Product status is a critical consideration for long-term supply chain planning. The STP90NF03L is classified as "Not For New Designs," indicating potential future discontinuation. The STP70NS04ZC is Active status, providing greater assurance of long-term availability. For new designs with extended production horizons, the STP70NS04ZC may be the preferred choice despite higher on-state resistance.

Q: Are both substitute parts RoHS compliant?

A: Yes, both the STP70NS04ZC and STP90NF03L are ROHS3 compliant. The original FDP7030L does not specify RoHS status. Both substitute devices meet current environmental and regulatory requirements for electronic component manufacturing and distribution.