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Infineon Technologies IRLB8748PBF
Infineon Technologies

IRLB8748PBF HEXFET N-Channel MOSFET, 30V 92A TO-220AB

MPNIRLB8748PBF
End of Life

Infineon HEXFET IRLB8748PBF, N-Channel MOSFET, 30V Vdss, 92A Id, 4.8mOhm Rds(on) at 10V, 23nC Qg, TO-220AB through-hole, -55 to 175°C.

$1.05Ref. price · indicative, final on quote
IRLB8748PBF 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

IRLB8748PBF Technical Specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
Mounting typeThrough Hole
Drain to source voltage30 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C92A (Tc)
Power dissipation75W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id2.35V @ 50µA
Rds on (Max) @ id, vgs4.8mOhm @ 40A, 10V
Gate charge (Qg) (Max) @ vgs23 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds2139 pF @ 15 V

Product details

30V, 92A, 4.8mOhm — the TO-220 workhorse

The IRLB8748PBF: Gate charge is 23 nC at 4.5 V. The 2.35 V maximum threshold at 50 µA confirms it turns on from logic-level drive. The TO-220AB through-hole package is a standard three-lead power package with a metal tab for heatsinking — the 75 W power dissipation assumes the tab is bolted to a heatsink with adequate thermal interface.

Where the 175°C rating matters

Operating junction temperature spans -55°C to 175°C. Input capacitance is 2139 pF at 15 V Vds.

Frequently asked questions

Is IRLB8748PBF a direct replacement for IRFZ44N?

The IRFZ44N is a 55 V, 49 A MOSFET with a typical Rds(on) around 17.5 mOhm. The IRLB8748PBF is a 30 V, 92 A part with 4.8 mOhm — lower voltage rating and much lower on-resistance. They are not pin-compatible replacements; the IRLB8748PBF suits lower-voltage, higher-current designs where the IRFZ44N would be over-voltaged.

What is the gate charge (Qg) of IRLB8748PBF?

Maximum gate charge is 23 nC at 4.5 V gate drive. This low Qg allows direct drive from a microcontroller GPIO or a logic-level gate driver without excessive switching losses.