can i replace ao4435 pchannel to 4407a pchannel?
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I tried to use this method:
Testing an N-channel MOSFET:
Step 1: Discharge the Gate (turn off the MOSFET)
Place the black probe (COM) on the Source (S) and the red probe on the Drain (D). The multimeter should show no continuity (high resistance or "OL" – open line).
Then, touch the black probe to the Source (S) and the red probe to the Gate (G). This discharges any stored charge in the Gate, turning the MOSFET off.
Step 2: Charge the Gate (turn on the MOSFET)
Now, place the red probe on the Gate (G) and the black probe on the...09-27-2024, 03:31 AM -
Hi there,
I have an Intel DX58SO motherboard that failed last year. One of the high side VRM MOSFETs failed shorted, and it killed my i7 980 CPU. This motherboard has a 6-phase VRM. The parts used on this motherboard's VRM are:
- 6 x High side MOSFET: NTMFS4841NH
- 6 x Low side MOSFET: NTMFS4834N
- 6 x Driver: ADP3121JCPZ
It was easy to figure out where the short was, because the bad MOSFET's gate was shorted to the drain/source too. Once I removed it, all the shorts were gone on the motherboard, and I confirmed on the removed MOSFET itself that the gate/drain/source... -
Hello, guys!
Got this 8-pin MOSFET (I presume) on the motherboard that I'm still trying to repair (HP Stream 11-ah117wm DAY0HGMB6C1 REV:C), close to the DC IN connector, and when I read voltage on Drain (5-8 pins) and Source (1-3 pins), I got the 19.81 VDC of the DC IN on each, but on the Gate (pin 4) it's 25 VDC. Is it normal? Now, I'm not quite sure the component is a MOSFET, but it looks like, and since it has the printed code on it totally unreadable, I can't try to find the datasheet. Can anyone give me a hand on this? Or maybe ff there's some MOSFET tutorial or something that you can... -
Hello guys,
I have a shorted MOSFET K8A60DA with the following characteristics:
Type Designator: TK8A60DA
Marking Code: K8A60DA
Type of Transistor: MOSFET
Type of Control Channel: N -Channel
Maximum Power Dissipation (Pd): 45 W
Maximum Drain-Source Voltage |Vds|: 600 V
Maximum Gate-Source Voltage |Vgs|: 30 V
Maximum Gate-Threshold Voltage |Vgs(th)|: 4 V
Maximum Drain Current |Id|: 7.5 A
Maximum Junction Temperature (Tj): 150 °C
Total Gate Charge (Qg): 20 nC
Rise Time (tr): 25 nS
Drain-Source... -
Hi Folks
Wonder if you can help
my mosfet knowledge is not great
so this is my question
19v in
1234 pins on mosfet 1= 19v
5678 on mosfet 1 ==0v
mosfter 2 12345678= 0v
Now im guessing because 1 of the mosfet 1 legs has to have voltage
Mosftet 2 is fine but no being turned on
So is mosfet 1 faulty
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