Infineon Technologies BSP373 E6327

Overview

BSP373 E6327 from Infineon Technologies is an N-channel enhancement-mode SIPMOS® small-signal power MOSFET rated for 100 V drain-source voltage, 1.7 A continuous drain current, and 0.3 Ω maximum R_DS(on) at V_GS = 10 V. It features avalanche energy rating (45 mJ), AEC-Q101 qualification, and is housed in PG-SOT223 package with G-D-S-D pinout - used in automotive load switching and industrial DC-DC converter high-side control.

For engineers reviewing the BSP373 E6327 datasheet, BSP373 E6327 pinout, BSP373 E6327 application, or BSP373 E6327 equivalent, key selection criteria include its 2.1–4.0 V gate threshold voltage, 1.5–2.8 S transconductance, 400–550 pF input capacitance, and -55 °C to +150 °C operating junction temperature range.

Technical Context

This MOSFET operates in enhancement mode with a silicon-based SIPMOS® structure optimized for fast switching and robust unclamped inductive switching (UIS) performance. Its dual-drain configuration supports higher current handling in SOT223 footprint while maintaining low thermal resistance (R_thJA ≤ 70 K/W).

The device integrates an intrinsic body diode with 1.7 A continuous forward current capability and 0.8–1.1 V forward voltage at 1.7 A, enabling synchronous rectification and flyback snubbing without external diodes in compact DC-DC topologies.

Key Specifications

Pinout & Package

Package: PG-SOT223 (standardized JEDEC TO-261AA variant with exposed drain pad for thermal relief). Pin 1 = Gate, Pin 2 = Drain, Pin 3 = Source, Pin 4 = Drain (dual-drain configuration).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel MOSFET switching applications.

Compared with STP1NK60ZFP and DMN3025LFG-7, the BSP373 E6327 uniquely balances 100 V ruggedness, 1.7 A current, and 0.3 Ω R_DS(on) in automotive-qualified SOT223 - making it optimal for 12/24 V load switching where both voltage margin and thermal efficiency matter.

Availability

BSP373 E6327 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC output stages, DC-DC converter synchronous rectifiers, and LED driver current switches requiring stable component supply and AEC-Q101 assurance.

Supply support for BSP373 E6327 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification infrastructure.

The BSP373 belongs to Infineon's SIPMOS® small-signal MOSFET product line, engineered for high-reliability switching in automotive and industrial environments where avalanche robustness and temperature stability are critical.

FAQ

Is BSP373 E6327 suitable for 5 V logic-level gate drive?

Yes - its gate threshold voltage range of 2.1–4.0 V ensures reliable turn-on with standard 5 V microcontroller outputs. At V_GS = 5 V, R_DS(on) is typically 0.22 Ω (vs. 0.16 Ω at 10 V), delivering sufficient performance for most 12 V load-switching applications without requiring level-shifting circuitry.

What is the thermal performance of BSP373 E6327 on a standard PCB?

With a 40 mm × 40 mm × 1.5 mm epoxy PCB and 6 cm² copper area for drain connection, its junction-to-ambient thermal resistance is ≤ 70 K/W. At 1.7 A and 0.3 Ω R_DS(on), power dissipation is ~0.86 W, resulting in ~60 K temperature rise above ambient - well within its -55 °C to +150 °C T_j limit.

Does BSP373 E6327 include integrated ESD protection?

No - it lacks on-chip ESD protection diodes. The absolute maximum gate-source voltage is ±20 V, and gate oxide is susceptible to damage from static discharge. External 10 kΩ series gate resistor and TVS clamp (e.g., PESD5V0S1BA) are recommended in production designs handling manual assembly or connector mating.

Can BSP373 E6327 replace a mechanical relay in automotive applications?

Yes - its 45 mJ avalanche energy rating and AEC-Q101 qualification make it suitable for replacing 12 V/1.5 A electromechanical relays in door modules and seat controls. Unlike relays, it offers silent operation, no contact wear, and sub-microsecond switching - though external flyback protection remains necessary for highly inductive loads.