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Infineon Technologies BUZ73AIN
Infineon Technologies

Infineon BUZ73AIN N-Channel Power MOSFET, 200 V, 5.5 A

MPNBUZ73AIN
End of Life

Infineon SIPMOS® BUZ73AIN, N-Channel Power MOSFET, 200 V Vdss, 5.5 A Id, 600 mOhm Rds(on) @ 4.5 A, 10 V, TO-220-3, Through Hole, -55°C to 150°C.

$0.32Ref. price · indicative, final on quote
BUZ73AIN datasheet
PackagingTO-220-3
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

BUZ73AIN Technical Specifications
ParameterValue
SeriesSIPMOS®
FET typeN-Channel
Mounting typeThrough Hole
Drain to source voltage200 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C5.5A (Tc)
Power dissipation40W (Tc)
Operating temperature-55°C ~ 150°C (TJ)
PackageBulk
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4V @ 1mA
Rds on (Max) @ id, vgs600mOhm @ 4.5A, 10V
Input capacitance (Ciss) (Max) @ vds530 pF @ 25 V

Product details

200 V N-channel MOSFET in a TO-220-3 — what it handles

The Infineon BUZ73AIN is an N-channel power MOSFET from the SIPMOS® family, rated for 200 V drain-to-source and 5.5 A continuous drain current at 25 °C case temperature. On-resistance is specified at 600 mOhm maximum with a 10 V gate drive, which keeps conduction losses manageable for a 40 W package in a TO-220-3 through-hole mount. The gate threshold is 4 V at 1 mA, so a 10 V drive is recommended to achieve the rated Rds(on). Operating junction temperature spans -55 °C to 150 °C, covering industrial and automotive under-hood environments.

Where it fits in a power stage

The 200 V Vdss and 5.5 A Id suit DC-DC converters, flyback primary switches, motor drives, and solenoid drivers.

Lifecycle and sourcing

That means it remains a safe choice for new BOM entries and production builds. The part is from the Infineon SIPMOS® series, a long-running MOSFET family with established second sources in the TO-220 footprint.

Frequently asked questions

What is the equivalent of BUZ73AIN?

A common cross-shop candidate is the IRF840, also a 500 V N-channel TO-220 MOSFET, but the BUZ73AIN is a 200 V part — the voltage class differs. For a 200 V pin-compatible alternative within the SIPMOS® family, check the Infineon BUZ71A or BUZ72A series parts in the same TO-220-3 footprint. Verify gate threshold and Rds(on) against your load requirements.