2SK3435-S MOSFET — Specifications & Equivalents

About the 2SK3435-S

The 2SK3435-S is a MOSFET with a drain–source voltage (V_DS) rating of 60 V and a continuous drain current (I_D) of 80 A. It can dissipate up to 84 W and is rated to a junction temperature of 150 °C. It is supplied in the TO262 package.

At a glance

• Type: MOSFET
• Max drain–source voltage (V_DS): 60 V
• Max continuous drain current (I_D): 80 A
• Power dissipation (P_D): 84 W
• Max junction temperature (T_J): 150 °C
• Package: TO262
• Manufacturer: Multi-source (JIS registered part number)

Typical applications

With its 60 V drain–source rating the 2SK3435-S sits in the mid-range class of switching MOSFETs, typically found in 24 V and 48 V industrial and battery systems, motor drives and H-bridges and load and hot-swap switching.

The 80 A current rating puts it in high-current territory, where conduction loss (I² × R_DS(on)) and thermal design usually matter more than switching loss. Budget for adequate copper area and a heatsink.

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 520 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.

Choosing a replacement for the 2SK3435-S

A drop-in substitute for the 2SK3435-S should match its polarity and offer a drain–source rating of at least 60 V and a continuous drain current rating of at least 80 A.

Mechanically, check the replacement against the TO262 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.

Because 2SK3435-S is a JIS-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 2SK3435-S?

The 2SK3435-S is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 60 V drain-source and 80 A continuous drain current.

What is the maximum voltage of the 2SK3435-S?

The 2SK3435-S has a maximum drain-source voltage (Vds) of 60 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.

How much current can the 2SK3435-S handle?

It is rated for 80 A of continuous drain current, with power dissipation limited to 84 W. Real-world capability depends on your heatsinking and ambient temperature.

What package does the 2SK3435-S come in?

It is listed in TO262. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the 2SK3435-S?

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.