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Infineon Technologies IRL3705NPBF
Infineon Technologies

IRL3705NPBF HEXFET N-Ch MOSFET, 55V 89A TO-220AB

MPNIRL3705NPBF
End of Life

Infineon HEXFET N-Channel MOSFET, IRL3705NPBF, 55 V Vdss, 89 A continuous drain current, 10 mOhm Rds(on) max at 46 A, TO-220AB through-hole package.

$1.85Ref. price · indicative, final on quote
IRL3705NPBF 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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

IRL3705NPBF Technical Specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
Mounting typeThrough Hole
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)4V, 10V
Current - continuous drain (Id) @ 25°C89A (Tc)
Power dissipation170W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±16V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id2V @ 250µA
Rds on (Max) @ id, vgs10mOhm @ 46A, 10V
Gate charge (Qg) (Max) @ vgs98 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds3600 pF @ 25 V

Product details

10 mOhm at 46 A — the switching-loss anchor

The IRL3705NPBF: The 98 nC gate charge at 5 V sets the switching-loss budget.

Gate threshold and drive-voltage window

The gate threshold voltage is 2 V max at 250 µA drain current, with the drive voltage for best Rds(on) specified at 4 V and 10 V.

175 °C junction — military-grade thermal headroom

The 170 W power dissipation at case temperature is the thermal limit under continuous operation — the actual safe dissipation depends on the heatsink and the RthJC of the TO-220AB package.

Input capacitance and switching speed

The input capacitance Ciss is 3600 pF typical at 25 V drain-source.

Sourcing and lifecycle posture

The ROHS3 compliance is confirmed. The TO-220AB package is widely stocked across the spot market, but the date-code traceability and laser-etch consistency should be verified on any gray-market lot — the HEXFET series is a common target for re-marked stock.

Frequently asked questions

Can I use IRL3705NPBF for motor control?

Yes, the 55 V Vdss and 89 A continuous rating make the IRL3705NPBF suitable for 12 V and 24 V DC motor drives, provided the inductive-load ringing does not exceed the 55 V breakdown. The 10 mOhm Rds(on) keeps conduction losses low at high current, and the 98 nC gate charge is manageable for PWM frequencies up to several tens of kilohertz with an appropriate gate driver. The 175 °C junction rating gives headroom for the thermal cycling typical in motor-start and stall conditions.