Infineon Technologies BSP299L6327HUSA1

Overview

BSP299L6327HUSA1 from Infineon Technologies is an N-channel enhancement-mode SIPMOS® small-signal power MOSFET rated for 500 V drain-source voltage, 0.4 A continuous drain current, and 4 Ω maximum R_DS(on) at V_GS = 10 V. It features avalanche energy rating (130 mJ), AEC-Q101 Class 1b qualification, and integrated body diode with 0.9–1.2 V forward voltage - used in automotive LED lighting drivers and industrial auxiliary power switches.

For engineers reviewing the BSP299L6327HUSA1 datasheet, BSP299L6327HUSA1 pinout, BSP299L6327HUSA1 application, or BSP299L6327HUSA1 equivalent, key selection criteria include its 500 V blocking capability, 130 mJ single-pulse avalanche robustness, SOT-223 thermal resistance (≤70 K/W), and gate threshold range (2.1–4.0 V) for reliable low-side switching in 24 V/48 V systems.

Technical Context

This device operates as a unidirectional, normally-off N-channel MOSFET with a planar SIPMOS® structure optimized for high-voltage, low-current switching. Its 500 V V_(BR)DSS and 130 mJ E_AS enable operation in inductive load circuits without external snubbers in many cases.

The gate threshold voltage (2.1–4.0 V) ensures compatibility with standard 3.3 V and 5 V logic-level drive, while the 300–400 pF C_iss and 15–25 pF C_rss support fast switching with moderate gate drive strength (R_GS = 50 Ω).

Key Specifications

Pinout & Package

SOT-223 package with exposed drain pad for thermal dissipation; 4-pin configuration (G-D-S-D) where Pins 1, 2, 3, and 4 correspond to Gate, Drain, Source, and Drain (dual-drain tie).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP2NK50Z and IRF640NPBF, BSP299L6327HUSA1 uniquely combines AEC-Q101 qualification, 130 mJ avalanche robustness, and SOT-223 thermal performance - making it optimal for space-constrained automotive and industrial auxiliary switches where reliability under transient stress is critical.

Availability

BSP299L6327HUSA1 is available at Aetrix Electronics and suitable for automotive LED lighting, industrial PLC outputs, and smart meter auxiliary power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BSP299L6327HUSA1 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 and discrete devices.

The BSP299 belongs to Infineon's SIPMOS® small-signal MOSFET product line, engineered for high-voltage, low-current switching in automotive and industrial applications where avalanche ruggedness and AEC-Q101 compliance are mandatory.

FAQ

Is BSP299L6327HUSA1 suitable for 24 V automotive battery monitoring circuits?

Yes - its −55 to +150 °C junction temperature range, AEC-Q101 Class 1b qualification, and 500 V V_(BR)DSS make it appropriate for battery monitoring switches that must survive load dump transients (ISO 7637-2 Pulse 5a). The 130 mJ E_AS rating further ensures robustness against inductive spikes during disconnection events.

What is the maximum gate resistor value recommended for driving BSP299L6327HUSA1 at 10 kHz PWM?

With typical C_iss = 350 pF and t_d(on) ≤ 12 ns at R_GS = 50 Ω, a gate resistor ≤ 100 Ω maintains <100 ns total switching time at 10 kHz. Higher values increase switching losses and thermal stress; values >220 Ω may cause incomplete turn-on due to V_GS(th) margin limitations.

Does BSP299L6327HUSA1 require a heatsink in SOT-223 mounting on 1 oz copper?

No - with P_tot = 1.8 W at T_A = 25 °C and R_thJA ≤ 70 K/W, junction temperature rise is ≤126 K at full 0.4 A conduction. On a 40 mm × 40 mm PCB with 6 cm² drain copper, thermal performance stays within −55 to +150 °C limits without added heatsink under typical ambient conditions.

Can BSP299L6327HUSA1 replace BS170 in existing designs?

Only with validation - while both are N-channel MOSFETs in SOT-223/TO-92 respectively, BSP299L6327HUSA1 has higher V_DS (500 V vs. 60 V), higher R_DS(on) (4 Ω vs. 5 Ω typ), and different gate threshold (2.1–4.0 V vs. 0.8–3.0 V). Its avalanche rating and AEC-Q101 status add value, but layout and drive compatibility must be confirmed.