Ncep 15T14 N Channel Mosfet To-220

If your solar inverter, power supply, or motor control board needs a strong N-channel MOSFET in a TO-220 body, and the old part was rated 150 V and 140 A, this is the part to order. It switches high current with very low on-resistance, so less power is lost as heat. It does not fit circuits that run above 150 V, above 140 A of steady current, or above 20 V on the gate. Check the checks below before you order, so the voltage, current, and size all match your board.

This is an original, high-quality part.

What NCEP15T14 does

A MOSFET is a switch that a small gate signal turns on and off. When it is on, current flows from drain to source through a very low resistance. On this part that resistance is 5.8 milliohms in the typical case at 10 V on the gate, so a high current can pass with only a small voltage drop. When it is off, it blocks up to 150 V between drain and source. The gate charge is 80 nC in total, which keeps switching losses low in fast switching work.

This part sits in the same N-channel TO-220 family as the 85 V part on the neighbouring page, but the two are not swaps for each other. Their voltage and current limits differ, so order by your own circuit’s numbers, not by family.

Key features

• N-channel power MOSFET in a TO-220-3L body
• 150 V drain-source voltage limit
• 140 A steady drain current at 25 °C case temperature, 100 A at 100 °C
• 560 A pulsed drain current limit
• Very low on-resistance: 5.8 milliohms typical, 6.5 milliohms at most, at 10 V on the gate
• 320 W power dissipation limit at 25 °C case temperature
• Gate drive up to ±20 V
• Fast switching: 26 ns turn-on delay, 47 ns turn-off delay in the test circuit
• Junction temperature up to 175 °C
• 100% UIS tested, as stated in the datasheet

Checks before you order

• Voltage: the drain-source voltage on your circuit must stay at or below 150 V. Above that, this part is the wrong pick.
• Current and heat: the steady current must stay at or below 140 A at a cool case, and only 100 A when the case runs at 100 °C. Work out the heat from your real current and the on-resistance in the table below, and use a heatsink that keeps the case cool enough. The 320 W limit counts only with the case held at 25 °C.
• Gate drive: drive the gate with 10 V to get the rated low on-resistance. Never push the gate past ±20 V. The part starts to turn on between 2.0 V and 4.0 V on the gate, but that is only the turn-on point, not the drive level for full current.
• Package: your board footprint must be TO-220 with three leads. This is a through-hole power part with a metal tab for a heatsink. It is not a surface-mount part.
• Body marking: the body must show NCEP15T14. If your old part shows a different code, stop and check your board list again.
• Switching speed: if your circuit switches slowly, a plain power switch may do. This part earns its place in fast switching work, where its low gate charge and short delay times matter.

Specifications

All figures below are from the manufacturer datasheet for this exact part, at 25 °C unless noted. No figure here was guessed.

Type	N-channel power MOSFET
Package	TO-220-3L, 3 leads
Body marking	NCEP15T14
Drain-source voltage	150 V
Gate-source voltage	±20 V
Continuous drain current	140 A at 25 °C case; 100 A at 100 °C case
Pulsed drain current	560 A
Power dissipation	320 W at 25 °C case
On-state resistance	5.8 milliohms typical, 6.5 milliohms at most, at 10 V gate, 70 A
Gate threshold voltage	2.0 V to 4.0 V (3.0 V typical)
Total gate charge	80 nC
Junction and storage temperature	−55 °C to +175 °C

Other names for the same part (good to know)

Buyers and repair techs write this same part a few ways. NCEP15T14 is the full part code. 15T14 MOSFET is the short code buyers type when they search. 150V 140A MOSFET is the plain rating buyers search by. N channel MOSFET TO-220 is the plain type-and-size name. MOSFET for solar inverter is the job name buyers use, since this part is most often fitted in solar inverter boards. If you see NCEP15T14 on a TO-220 body, and your circuit needs 150 V and 140 A, this page is the right match. Do not judge by the code alone — check the voltage, the current, and the TO-220 size too.

Frequently Asked Questions

What do 150 V and 140 A mean for this part?

150 V is the most the part can block between drain and source when it is off. 140 A is the most steady current it can carry with the case held at 25 °C. At a 100 °C case the steady limit falls to 100 A, so heat control is part of the rating, not an extra.

What does low on-resistance mean for heat?

When the part is on, it still has a small resistance — 5.8 milliohms in the typical case. Current through that resistance turns into heat. A lower resistance means less heat at the same current, which is why this part suits high-current boards.

Can I use this part in a solar inverter?

Yes, if your inverter stage runs at or below 150 V and 140 A of steady current, with a TO-220 footprint and proper heatsinking. Check your board’s own voltage and current first — an inverter that runs hotter or higher than those limits needs a different part.

What gate voltage does this part need?

Drive the gate with 10 V for the rated low on-resistance. The gate must never go past ±20 V. The part starts to turn on between 2.0 V and 4.0 V, but that turn-on point alone does not give full current — use the full 10 V drive.

Does this part fit a TO-220 footprint?

Yes, if your board has a TO-220 three-lead footprint with room for the heatsink tab. This is a through-hole part, not a surface-mount part, so the leads go through holes in the board.

What is the price of this part?

Check the live price on the product page. The price shown there is the current one.

Use note kept from the old page: this part was listed before for solar inverters, power supplies, motor control, and battery chargers, with low on-resistance for efficient high-power switching, and that use still stands.

You can view and download the datasheet for this part from the Download button on this page.