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Infineon Technologies BSS138W L6327 — Discrete Semiconductors

Infineon BSS138W L6327 N-Channel MOSFET, 60 V, 280 mA, SC-70

MPNBSS138W L6327
Obsolete

Infineon SIPMOS® N-Channel MOSFET, BSS138W L6327, 60 V Vds, 280 mA Id, 3.5 Ohm Rds(on) @ 220 mA, SC-70 / SOT-323 surface mount package, -55°C to 150°C operating temperature.

$2.3700Ref. price · indicative, final on quote
Infineon Technologies BSS138W L6327 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BSS138W L6327 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

The Infineon BSS138W L6327 is an N-Channel enhancement-mode MOSFET from the SIPMOS® family, rated for 60 V drain-source breakdown and 280 mA continuous drain current in a tiny SC-70 / SOT-323 package. The official product status is Obsolete. That means Infineon has stopped manufacturing this specific order code; no last-time-buy window remains open through the factory channel. Any stock you find today is either new-old-stock from distributor overstocks or surplus from the independent market. If you are supporting a legacy board that uses this exact part, you will need to source it through brokers or consider a pin-compatible alternative.

Key ratings for the design decision

The 60 V drain-source rating gives plenty of margin for 12 V or 24 V rails — it is not a part you push to the limit in a 48 V system. The 3.5 Ohm maximum on-resistance at 220 mA gate drive of 10 V is typical for a small-signal MOSFET; at 4.5 V drive the Rds(on) will be higher, so check the gate threshold curve if your logic-level driver only swings 3.3 V. The 280 mA continuous drain current is the DC limit at 25°C ambient; derate for elevated temperature.

This part comes in the SC-70 / SOT-323 package, a three-lead surface-mount case. The Infineon supplier device package is PG-SOT323.

Frequently asked questions

Is BSS138W L6327 obsolete?

Yes, the Infineon BSS138W L6327 is listed as Obsolete. Infineon no longer manufactures this order code. Any available stock is surplus or new-old-stock from the independent distribution channel.

What is the replacement for BSS138W L6327?

The evidence does not list an official Infineon successor order code for the BSS138W L6327. For a pin-compatible alternative, look at other N-Channel MOSFETs in the SC-70 / SOT-323 package with a 60 V drain-source rating and similar gate threshold. The BSS138 (without the 'W' suffix) is a common cross-shop candidate but verify the package and electrical ratings against your BOM.