K1307 MOSFET — Specifications & Equivalents
About the K1307
The K1307 is a MOSFET with a drain–source voltage (VDS) rating of 100 V and a continuous drain current (ID) of 18 A. It can dissipate up to 48 W and is rated to a junction temperature of 175 °C. It is supplied in the TO220FP package.
At a glance
- Type: MOSFET
- Max drain–source voltage (VDS): 100 V
- Max continuous drain current (ID): 18 A
- Power dissipation (PD): 48 W
- Max junction temperature (TJ): 175 °C
- Package: TO220FP
Typical applications
With its 100 V drain–source rating the K1307 sits in the medium-voltage class of switching MOSFETs, typically found in 48 V and 96 V distribution systems, solar and telecom power stages, DC motor drives and intermediate-bus DC-DC converters.
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 (Coss) of 560 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the K1307
A drop-in substitute for the K1307 should match its polarity and offer a drain–source rating of at least 100 V and a continuous drain current rating of at least 18 A.
Mechanically, check the replacement against the TO220FP 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 K1307?
The K1307 is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 100 V drain-source and 18 A continuous drain current.
What is the maximum voltage of the K1307?
The K1307 has a maximum drain-source voltage (Vds) of 100 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the K1307 handle?
It is rated for 18 A of continuous drain current, with power dissipation limited to 48 W. Real-world capability depends on your heatsinking and ambient temperature.
What package does the K1307 come in?
It is listed in TO220FP. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the K1307?
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.
Key Specifications
| Pd ⓘ - Maximum Power Dissipation | 48 W |
|---|---|
| |Vds|ⓘ - Maximum Drain-Source Voltage | 100 V |
| |Vgs|ⓘ - Maximum Gate-Source Voltage | 20 V |
| |Id| ⓘ - Maximum Drain Current | 18 A |
| Tj ⓘ - Maximum Junction Temperature | 175 °C |
| Cossⓘ - Output Capacitance | 560 pF |
| Package | TO220FP |
| isc N-Channel MOSFET Transistor 2SK1307FEATURESDrain Current I = 20A@ T =25D CDrain Source Voltage- | V = 100V(Min)DSSStatic Drain-Source On-Resistance: R = 85m(Max)DS(on)100% avalanche testedMinimum Lot-to-Lot variations for robust deviceperformance and reliable operationDESCRIPTIONmotor drive, DC-DC converter, power switchand solenoid drive.A |