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Infineon Technologies BSS139IXTSA1
Infineon Technologies

BSS139IXTSA1 N-Channel MOSFET, 250 V, 100 mA, SOT-23-3

MPNBSS139IXTSA1
End of Life

Infineon BSS139IXTSA1, N-Channel MOSFET, 250 Vdss, 100 mA Id, 14 Ohm Rds(on) at 10 V, SOT-23-3, -55 to 150 °C.

$0.49Ref. price · indicative, final on quote
BSS139IXTSA1 datasheet
PackagingTO-236-3, SC-59, SOT-23-3
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

BSS139IXTSA1 Technical Specifications
ParameterValue
FET typeN-Channel
Mounting typeSurface Mount
Drain to source voltage250 V
Drive voltage (Max rds on, min rds on)0V, 10V
Current - continuous drain (Id) @ 25°C100mA (Ta)
Power dissipation360mW (Ta)
Operating temperature-55°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-236-3, SC-59, SOT-23-3
Vgs(th) (Max) @ id1V @ 56µA
Rds on (Max) @ id, vgs14Ohm @ 100mA, 10V
Gate charge (Qg) (Max) @ vgs2.3 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds60 pF @ 25 V

Product details

250 V N-channel in a SOT-23 — what it buys you

The Infineon BSS139IXTSA1 is a small-signal N-channel MOSFET that packs a 250 V drain-source rating into a three-pin SOT-23-3 package. It is designed for switching and linear-mode applications where the load current stays under 100 mA — think relay and solenoid drivers, DC-DC converter auxiliary rails, or level shifters in industrial control boards.

On-resistance and drive voltage — the trade-off

Rds(on) is specified at 14 Ohm maximum with 10 V gate drive and 100 mA drain current. That is a high enough resistance that the part is not meant for continuous power delivery — the 360 mW package dissipation limit is the real constraint.

Temperature range and package fit

The gate charge is just 2.3 nC at 5 V, so a microcontroller GPIO can drive the gate directly without a pre-driver.

Frequently asked questions

What is the exact Rds(on) of BSS139IXTSA1 at 100 mA?

The maximum on-resistance is 14 Ohm at 100 mA drain current with 10 V gate drive.

What is the Vdss of BSS139IXTSA1?

The drain-to-source voltage rating is 250 V.

Is BSS139IXTSA1 RoHS compliant?

Yes, it is listed as ROHS3 compliant.

What package is BSS139IXTSA1 in?

The BSS139IXTSA1 comes in a PG-SOT-23-3 package, also described as TO-236-3, SC-59, SOT-23-3. It is supplied on Tape & Reel or Cut Tape.