MMD80R900PRH MOSFET — Specifications & Equivalents
About the MMD80R900PRH
The MMD80R900PRH is a MOSFET with a drain–source voltage (VDS) rating of 800 V and a continuous drain current (ID) of 6 A. It can dissipate up to 75.8 W and is rated to a junction temperature of 150 °C. It is supplied in the TO-252 package.
At a glance
- Type: MOSFET
- Max drain–source voltage (VDS): 800 V
- Max continuous drain current (ID): 6 A
- Power dissipation (PD): 75.8 W
- Max junction temperature (TJ): 150 °C
- Package: TO-252
Typical applications
With its 800 V drain–source rating the MMD80R900PRH sits in the high-voltage (offline) class of switching MOSFETs, typically found in primary-side switching in offline SMPS (flyback, forward and quasi-resonant), active PFC boost stages, half-bridge and full-bridge inverters, induction heating and electronic ballasts and BLDC and AC motor drives. The rating leaves usable margin above the ~325 V DC bus obtained by rectifying 230 VAC mains, which is why this class dominates offline power supplies.
Gate drive and switching notes
Keep gate–source voltage within the ±30 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.
Switching behaviour is characterised by an output capacitance (Coss) of 508 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the MMD80R900PRH
A drop-in substitute for the MMD80R900PRH should match its polarity and offer a drain–source rating of at least 800 V and a continuous drain current rating of at least 6 A.
Mechanically, check the replacement against the TO-252 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 MMD80R900PRH?
The MMD80R900PRH is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 800 V drain-source and 6 A continuous drain current.
What is the maximum voltage of the MMD80R900PRH?
The MMD80R900PRH has a maximum drain-source voltage (Vds) of 800 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the MMD80R900PRH handle?
It is rated for 6 A of continuous drain current, with power dissipation limited to 75.8 W. Real-world capability depends on your heatsinking and ambient temperature.
What package does the MMD80R900PRH come in?
It is listed in TO-252. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the MMD80R900PRH?
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 | 75.8 W |
|---|---|
| |Vds|ⓘ - Maximum Drain-Source Voltage | 800 V |
| |Vgs|ⓘ - Maximum Gate-Source Voltage | 30 V |
| |Id| ⓘ - Maximum Drain Current | 6 A |
| Tj ⓘ - Maximum Junction Temperature | 150 °C |
| Cossⓘ - Output Capacitance | 508 pF |
| Package | TO-252 |
| isc N-Channel MOSFET Transistor MMD80R900PRHFEATURESDrain Current | I = 6A@ T =25D CDrain Source Voltage: V = 800V(Min)DSSStatic Drain-Source On-Resistance: R = 0.9(Max) @V = 10VDS(on) GS100% avalanche testedMinimum Lot-to-Lot variations for robust deviceperformance and reliable operationDESCRIPTIONmotor drive, DC-DC converter, power switchand sole |