2N6961 MOSFET — Specifications & Equivalents

About the 2N6961

The 2N6961 is a MOSFET with a drain–source voltage (V_DS) rating of 1000 V and a continuous drain current (I_D) of 4.6 A. It can dissipate up to 125 W and is rated to a junction temperature of 150 °C. It is supplied in the TO204 package.

At a glance

• Type: MOSFET
• Max drain–source voltage (V_DS): 1000 V
• Max continuous drain current (I_D): 4.6 A
• Power dissipation (P_D): 125 W
• Max junction temperature (T_J): 150 °C
• Package: TO204
• Manufacturer: Multi-source (JEDEC registered part number)

Typical applications

With its 1000 V drain–source rating the 2N6961 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

Switching behaviour is characterised by an output capacitance (C_oss) of 3500 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.

Choosing a replacement for the 2N6961

A drop-in substitute for the 2N6961 should match its polarity and offer a drain–source rating of at least 1000 V and a continuous drain current rating of at least 4.6 A.

Mechanically, check the replacement against the TO204 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.

Because 2N6961 is a JEDEC-registered part number rather than one vendor's proprietary series, it is produced by several manufacturers. Datasheet figures vary slightly between them, so check the datasheet of the brand you actually buy — this also makes like-for-like sourcing easier.

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 2N6961?

The 2N6961 is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 1000 V drain-source and 4.6 A continuous drain current.

What is the maximum voltage of the 2N6961?

The 2N6961 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 2N6961 handle?

It is rated for 4.6 A of continuous drain current, with power dissipation limited to 125 W. Real-world capability depends on your heatsinking and ambient temperature.

What package does the 2N6961 come in?

It is listed in TO204. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the 2N6961?

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.