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NXP Semiconductors PSMN4R3-80PS,127 — Discrete Semiconductors
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NXP Semiconductors / Discrete Semiconductors

PSMN4R3-80PS,127 Nexperia N-Channel MOSFET, 80V, 120A

MPN PSMN4R3-80PS,127
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Nexperia PSMN4R3-80PS,127 N-channel MOSFET, 80 V drain-source, 120 A continuous drain, 4.3 mOhm Rds(on) at 10 V, TO-220AB through-hole package, -55°C to 175°C junction temperature.

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[SPEC] Essential Parameters Snapshot Full Specifications (15)
Package / Case TO-220-3
Output / Current 80 V

Full Technical Specifications

15 Parameters
PSMN4R3-80PS,127 specifications
Parameter / AttributeSpecification / Value
FET typeN-Channel
MountingThrough Hole
Drain to source voltage80 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C120A (Tc)
Power dissipation306W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageBulk
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4V @ 1mA
Rds on (Max) @ id, vgs4.3mOhm @ 25A, 10V
Gate charge (Qg) (Max) @ vgs111 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds8161 pF @ 40 V
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Technical Details & Description

80 V, 4.3 mOhm N-channel — the power-switch workhorse

The PSMN4R3-80PS,127: The wide junction temperature range from -55°C to 175°C suits it for environments where ambient temperatures climb, such as under-hood automotive or industrial enclosures.

A 10 V drive is specified for the rated Rds(on); at lower gate voltages the on-resistance climbs. The 4 V maximum gate threshold at 1 mA drain current means the device is fully enhanced with a 10 V drive, but it won't turn on hard with a 3.3 V logic signal. For a 48 V bus with 25 A load, the 4.3 mOhm Rds(on) yields about 1.1 W conduction loss at 25 A — manageable with a modest heatsink. Avalanche ruggedness is implied by the 120 A continuous rating, but verify the single-pulse energy from the datasheet's SOA curves for your inrush or fault condition.

Frequently asked questions

What is the closest pin-compatible alternative to PSMN4R3-80PS,127?

Nexperia offers several 80 V N-channel MOSFETs in the TO-220AB package with similar Rds(on) ranges, such as the PSMN4R5-80PS. Check the parametric table for exact Rds(on) and gate charge differences to confirm fit for your switching frequency and conduction loss budget.

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