SD10425JAA MOSFET — Specifications & Equivalents

About the SD10425JAA

The SD10425JAA is a MOSFET with a drain–source voltage (V_DS) rating of 1000 V and a continuous drain current (I_D) of 2 A. It can dissipate up to 75 W and is rated to a junction temperature of 150 °C. It is supplied in the TO254 package.

At a glance

• Type: MOSFET
• Max drain–source voltage (V_DS): 1000 V
• Max continuous drain current (I_D): 2 A
• Power dissipation (P_D): 75 W
• Max junction temperature (T_J): 150 °C
• Package: TO254

Typical applications

With its 1000 V drain–source rating the SD10425JAA sits in the ultra-high-voltage class of switching MOSFETs, typically found in industrial ignition and igniter circuits, high-voltage pulse generators and electrostatic and CRT deflection stages. Ratings at this level demand careful creepage/clearance and insulation design on the PCB.

Gate drive and switching notes

Keep gate–source voltage within the ±20 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.

Switching behaviour is characterised by an output capacitance (C_oss) of 60 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.

Choosing a replacement for the SD10425JAA

A drop-in substitute for the SD10425JAA should match its polarity and offer a drain–source rating of at least 1000 V and a continuous drain current rating of at least 2 A.

Mechanically, check the replacement against the TO254 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.

Where the application switches inductive loads or runs near the voltage limit, keep extra headroom rather than choosing a part that only just meets the original numbers.

Frequently asked questions

What is the SD10425JAA?

The SD10425JAA is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 1000 V drain-source and 2 A continuous drain current.

What is the maximum voltage of the SD10425JAA?

The SD10425JAA has a maximum drain-source voltage (Vds) of 1000 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.

How much current can the SD10425JAA handle?

It is rated for 2 A of continuous drain current, with power dissipation limited to 75 W. Real-world capability depends on your heatsinking and ambient temperature.

What package does the SD10425JAA come in?

It is listed in TO254. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the SD10425JAA?

This page lists 17 candidate equivalents matched on electrical ratings and package. Any replacement should meet or exceed the original voltage, current and dissipation figures and use a compatible drive level.