CS3N150AHR MOSFET — Specifications & Equivalents

About the CS3N150AHR

The CS3N150AHR is a MOSFET with a drain–source voltage (V_DS) rating of 1500 V and a continuous drain current (I_D) of 3 A. It can dissipate up to 32 W and is rated to a junction temperature of 150 °C. It is supplied in the TO3P package.

At a glance

• Type: MOSFET
• Max drain–source voltage (V_DS): 1500 V
• Max continuous drain current (I_D): 3 A
• Power dissipation (P_D): 32 W
• Max junction temperature (T_J): 150 °C
• Package: TO3P

Typical applications

With its 1500 V drain–source rating the CS3N150AHR 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 ±30 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.

Switching behaviour is characterised by an output capacitance (C_oss) of 98 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.

Choosing a replacement for the CS3N150AHR

A drop-in substitute for the CS3N150AHR should match its polarity and offer a drain–source rating of at least 1500 V and a continuous drain current rating of at least 3 A.

Mechanically, check the replacement against the TO3P 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 CS3N150AHR?

The CS3N150AHR is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 1500 V drain-source and 3 A continuous drain current.

What is the maximum voltage of the CS3N150AHR?

The CS3N150AHR has a maximum drain-source voltage (Vds) of 1500 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.

How much current can the CS3N150AHR handle?

It is rated for 3 A of continuous drain current, with power dissipation limited to 32 W. Real-world capability depends on your heatsinking and ambient temperature.

What package does the CS3N150AHR come in?

It is listed in TO3P. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the CS3N150AHR?

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.