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NXP Semiconductors BUK7507-55B,127 — Discrete Semiconductors

NXP BUK7507-55B,127 TrenchMOS N-Channel MOSFET

MPNBUK7507-55B,127
End of Life

NXP TrenchMOS™ N-Channel MOSFET, 55V Vdss, 75A continuous drain, 7.1mOhm Rds(on) at 25A/10V, 53nC gate charge, TO-220AB through-hole package, -55°C to 175°C junction temperature.

$0.48Ref. price · indicative, final on quote
NXP Semiconductors BUK7507-55B,127 datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesTrenchMOS™
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BUK7507-55B,127 specifications
ParameterValue
SeriesTrenchMOS™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C75A (Tc)
Power dissipation203W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4V @ 1mA
Rds on (Max) @ id, vgs7.1mOhm @ 25A, 10V
Gate charge (Qg) (Max) @ vgs53 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds3760 pF @ 25 V

Product details

55 V, 75 A, 7.1 mΩ — the conduction-loss anchor for a 48 V bus

The BUK7507-55B,127: The 7.1 mΩ maximum on-resistance at 25 A with 10 V gate drive sets conduction loss in a motor-drive or battery-switch path.

Junction temperature and the thermal budget

The junction temperature range runs from -55°C to 175°C, covering military-grade cold soak and the hot end of an under-hood or industrial enclosure. Power dissipation is rated at 203 W at the case — that number assumes an infinite heatsink; real designs need to derate against the thermal resistance of the chosen heatsink and airflow.

If you are reviewing a BOM for a motor-drive or power-supply line that used this part, you are not under a lifecycle squeeze.

Sourcing posture

We source the BUK7507-55B,127 through independent distribution. Submit an RFQ for a firm price and lead-time commitment on your quantity.

Frequently asked questions

Where can I buy BUK7507-55B,127 and get a price?

Submit a request with your target quantity and we will confirm current pricing and availability at quote time.

What are the equivalents for BUK7507-55B?

The BUK7507-55B,127 is a 55 V, 75 A, 7.1 mΩ N-channel TrenchMOS in TO-220AB. Pin-compatible equivalents would share the same TO-220-3 footprint and similar parametric window — 55 V to 60 V Vdss, 75 A or higher drain current, and on-resistance at or below 7.1 mΩ at 10 V gate drive. The IRF3205 (55 V, 110 A, 8 mΩ) is a common cross-shop candidate but has a higher on-resistance; verify Rds(on) against your conduction-loss budget before substituting.