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Infineon Technologies BSS138W L6433 — Discrete Semiconductors

Infineon BSS138W L6433 N-Channel MOSFET, 60 V, 280 mA, SC-70

MPNBSS138W L6433
Obsolete

Infineon SIPMOS N-Channel MOSFET, BSS138W L6433, 60 V Vdss, 280 mA Id, 3.5 Ohm Rds(on) at 10 V, SC-70 SOT-323 package, -55°C to 150°C.

$0.4800Ref. price · indicative, final on quote
Infineon Technologies BSS138W L6433 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BSS138W L6433 specifications
ParameterValue
SeriesSIPMOS®
FET typeN-Channel
MountingSurface Mount
Drain to source voltage60 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C280mA (Ta)
Power dissipation500mW (Ta)
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseSC-70, SOT-323
Vgs(th) (Max) @ id1.4V @ 26µA
Rds on (Max) @ id, vgs3.5Ohm @ 220mA, 10V
Gate charge (Qg) (Max) @ vgs1.5 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds43 pF @ 25 V

Product details

Small-signal N-channel MOSFET in a hand-solderable SC-70

The BSS138W L6433: It comes in a SC-70 (SOT-323) surface-mount package — a tiny three-lead footprint that is still practical for hand soldering with a fine tip and magnification.

Parametric profile for low-power switching

Gate threshold voltage is 1.4 V max at 26 µA drain current. Gate charge is 1.5 nC typical at 10 V. Power dissipation is rated at 500 mW at 25°C ambient, typical for a small SOT-323 package.

Buyers should verify the date code and package marking (PG-SOT323) when ordering from non-franchised channels.

The supplier device package code is PG-SOT323. The land pattern follows the JEDEC standard for this footprint.

Frequently asked questions

Where can I buy BSS138W L6433 available via RFQ confirmation?

The BSS138W L6433 is obsolete and available through independent distribution.

Is BSS138W L6433 obsolete?

Yes, Infineon lists the BSS138W L6433 as obsolete. No official replacement part number has been published. For existing designs, source through independent distribution against an RFQ.

What is the Vgs threshold of BSS138W L6433?

The maximum gate threshold voltage is 1.4 V at 26 µA drain current. This allows direct drive from 3.3 V logic levels.