STP20NK50Z on a repaired board1 / 8
mos6 · Main board of a Rcf HDL20 powered speaker

Photos show this part as we found it on boards during repairs - not the stock you'll receive.

STP20NK50Z

N-channel power MOSFET, 500V 20A, TO-220 package

Ask About This Part
Where to buy online
MouserDigiKeyLCSC Amazon eBay AliExpress

Other stores - prices, stock and shipping are theirs.

Datasheet

  • Identified on 8 board photos in 2 devices

Specifications (MOSFET)

N or PN
Max power dissipation190 W
Max drain-source voltage |Vds|500 V
Max gate-source voltage |Vgs|30 V
Max gate threshold voltage |Vgs(th)|4.5 V
Max continuous drain current |Id|17 A
Max junction temperature150 deg C
Total gate charge85 nC
Rise time20 ns
Output capacitance (Coss)328 pF
Max drain-source on-resistance Rds(on)0.27 Ohm
Package, e.g. TO220ABTO220
Single-pulse avalanche energy850 mJ
Repetitive avalanche current17 A
Single-pulse avalanche current17 A

Found in these devices

Where we've identified this part on boards we've worked on.

DeviceBoardPosition on board
Rcf HDL20 powered speakerMain boardMOS5, MOS6
Dbtech SIGMA S215 powered speakerMain board

From our repair bench

1
repairs involving this part
0
times replaced
0
found faulty
1
checked and OK

Totals across every repair logged on Circuit Fixers.

Similar parts

FDP20N50
FDP20N50
N-channel power MOSFET, 500V 20A, TO-220
500V · 20A · 0.23Ω

Verified replacements were fitted in place of this part in our repairs, and the repair worked. Tested substitutes have been used in our repairs to replace this part. Related parts are ones this part can replace, not the other way round. The others match on ratings from our parameter tables - check the datasheet before fitting.

Often found with

Parts we stock that sit on the same boards - handy when the fault is in that area.

IRS21531D
IRS21531D
Self oscillating gate driver
On 3 of the same board photos
MC33078
MC33078
IC OP AMP 2CH 8-SOIC
On 2 of the same board photos
PIC16F689
PIC16F689
8-bit microcontroller, 20 MHz, 4 KB flash, 256 bytes RAM
On 2 of the same board photos
IRS20957S
IRS20957S
Single-channel gate driver IC, high-side/low-side MOSFET driver.
On 1 of the same board photo
IRFB4227
IRFB4227
N-channel power MOSFET, 200V 49A, TO-220AB package
On 1 of the same board photo
4.7 OHM 0805
4.7 OHM 0805
Thick film resistor, 4.7 ohm, surface mount 0805 package.
On 1 of the same board photo
10UF 16V SMD
10UF 16V SMD
Tantalum or ceramic capacitor, 10 microfarads, 16 volt surface mount package.
On 1 of the same board photo
10 OHM 3W
10 OHM 3W
Wirewound resistor, 10 ohm, 3 watt power rating.
On 1 of the same board photo