Infineon Technologies BSS223PW L6327

Overview

BSS223PW L6327 from Infineon Technologies is a P-channel enhancement-mode MOSFET optimized for low-voltage logic-level switching, featuring R_DS(on) = 1.27 Ω at V_GS = −2.5 V, −20 V V_DS rating, −0.39 A continuous drain current, and SOT-323 package. It serves as a compact load switch in space-constrained DC-DC converter bias rails and USB port power control.

For engineers reviewing the BSS223PW L6327 datasheet, BSS223PW L6327 pinout, BSS223PW L6327 application, or BSS223PW L6327 equivalent, key selection criteria include logic-level gate drive compatibility (2.5 V threshold), avalanche ruggedness (E_AS = 1.4 mJ), thermal derating above 70°C, and reverse diode forward voltage (V_SD = −1.0 V at −0.39 A).

Technical Context

This OptiMOS™-P device uses trench-gate silicon technology to achieve low R_DS(on) with minimal gate charge (Q_g = 0.5–0.62 nC) and fast switching (t_r = 5–7.5 ns, t_f = 3.2–4.8 ns). Its −0.9 V typical gate threshold enables reliable turn-on from 2.5 V microcontroller I/Os.

The integrated body diode supports synchronous rectification in buck converters, with t_rr = 7.6–9.5 ns and Q_rr = 1.1–1.4 nC. Avalanche rating (E_AS = 1.4 mJ) and dv/dt immunity (−6 kV/µs) support robust operation in inductive load switching.

Key Specifications

Pinout & Package

SOT-323 (SC-70) 3-pin surface-mount package with 1.3 mm × 1.75 mm footprint and 0.65 mm pitch; thermally enhanced plastic case rated for 150°C junction operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel logic-level MOSFET applications.

Compared with DMG2302UK-7 and SI2301DS-T1-E3, BSS223PW L6327 offers optimal balance of logic-level drive, SOT-323 size, and ruggedness-making it preferred for space-limited, transient-prone applications like USB power gating and sensor bias sequencing.

Availability

BSS223PW L6327 is available at Aetrix Electronics and suitable for USB power management, DC-DC bias sequencing, LED backlight dimming, and low-power sensor biasing requiring stable component supply across production lifecycles.

Supply support for BSS223PW L6327 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949.

BSS223PW belongs to the OptiMOS™-P small-signal transistor family, engineered for high-efficiency, low-voltage logic-level switching in portable and space-constrained power systems.

FAQ

What is the maximum safe operating temperature for BSS223PW L6327?

The BSS223PW L6327 is rated for junction temperatures from −55°C to +150°C. Its thermal resistance R_thJA is 500 K/W, so at 25°C ambient and 0.25 W power dissipation, junction temperature rises to 150°C-matching the absolute maximum. Derating is required above 70°C ambient per Figure 2 in the datasheet.

Can BSS223PW L6327 be used in high-side switching configurations?

Yes-BSS223PW L6327 functions as a high-side switch when source is tied to the positive rail and gate is driven negative relative to source. Its −2.5 V logic-level threshold allows direct control from 3.3 V MCUs using simple level-shifting resistors or dedicated gate drivers for faster switching.

Does BSS223PW L6327 have a built-in body diode, and what are its characteristics?

Yes-it integrates a monolithic body diode with V_SD = −1.0 to −1.33 V at −0.39 A and reverse recovery time t_rr = 7.6–9.5 ns. This enables synchronous rectification in buck topologies and freewheeling in inductive loads, though external Schottky diodes may be preferred for ultra-low V_F requirements.

How does the avalanche rating affect real-world circuit design?

The 1.4 mJ single-pulse avalanche energy rating allows BSS223PW L6327 to safely absorb inductive kickback from relays, solenoids, or motor windings without external clamping. Designers can eliminate TVS diodes in low-energy applications, reducing BOM count-but repetitive avalanche must be avoided per Infineon's application notes.