Infineon Technologies BSP62H6327XTSA1

Overview

BSP62H6327XTSA1 from Infineon Technologies is a PNP silicon Darlington transistor in SOT-223 package, rated for 80 V V_CEO, 1 A continuous collector current, and 1.5 W total power dissipation at T_S ≤ 124 °C. It delivers low V_CE(sat) (1.8 V @ I_C = 1 A, I_B = 1 mA) and high DC current gain (h_FE ≥ 1000 @ I_C = 150 mA), enabling efficient high-gain switching in automotive load control circuits.

For engineers reviewing the BSP62H6327XTSA1 datasheet, BSP62H6327XTSA1 pinout, BSP62H6327XTSA1 application, or BSP62H6327XTSA1 equivalent, key selection criteria include V_CEO rating, Darlington saturation voltage, thermal resistance (R_thJS ≤ 17 K/W), AEC-Q101 qualification, and complementary NPN pairing with BSP52.

Technical Context

This device implements a two-stage PNP Darlington configuration to achieve high current gain while maintaining single-package integration. Its structure supports direct base-driven switching without external bias networks, with guaranteed V_CE(sat) ≤ 1.8 V at full-rated 1 A load and V_BE(sat) ≤ 2.2 V under same conditions.

Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features Pb-free (RoHS-compliant) packaging. Thermal performance is characterized by junction-to-soldering-point resistance ≤17 K/W, enabling operation up to 150 °C junction temperature with appropriate PCB copper area.

Key Specifications

Pinout & Package

SOT-223 package with 4-pin configuration: three functional terminals (B, C, E) plus an exposed collector tab (Pin 4) serving as both electrical connection and primary thermal path to PCB.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP Darlington switching applications.

Compared with BCP52TA and ZTX951, BSP62H6327XTSA1 uniquely combines 80 V rating, AEC-Q101 compliance, and SOT-223 thermal performance-making it the only choice for automotive 12/24 V high-side switching where reliability, voltage margin, and PCB thermal management are jointly critical.

Availability

BSP62H6327XTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial relay replacement systems, and LED lighting power stages requiring stable component supply across extended production lifecycles.

Supply support for BSP62H6327XTSA1 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 electronics, and industrial control ICs, with global manufacturing and quality certification infrastructure.

This part belongs to Infineon's BSP6x family of AEC-Q101-qualified PNP Darlington transistors, designed specifically for high-reliability, high-gain switching in automotive body electronics and industrial solid-state relay replacements.

FAQ

What is the maximum safe operating temperature for BSP62H6327XTSA1?

The junction temperature must not exceed 150 °C, and the soldering point temperature (T_S) must remain ≤124 °C to maintain 1.5 W power dissipation capability. Derating is required above T_S = 124 °C per the P_tot vs. T_S curve in the datasheet, with zero dissipation at 150 °C ambient at the soldering point.

Can BSP62H6327XTSA1 be used in parallel for higher current handling?

No-Darlington transistors exhibit positive thermal feedback and unequal current sharing due to h_FE variation and V_BE mismatch. Parallel operation is not recommended unless externally ballasted with emitter resistors and thermally coupled mounting, which negates size and efficiency advantages.

Is there a recommended base resistor value for driving BSP62H6327XTSA1 from a 3.3 V MCU GPIO?

For 1 A load, assuming h_FE = 1000 and V_BE(sat) ≈ 2.0 V, a 1 kΩ base resistor limits I_B to ~1.3 mA, providing sufficient drive margin. Layout must minimize base trace inductance, and a 100 nF ceramic capacitor near the base pin improves transient response.

Does BSP62H6327XTSA1 require a flyback diode when switching inductive loads?

Yes-inductive loads (e.g., solenoids, relays) require an external flyback diode (e.g., 1N4007) connected cathode-to-collector, anode-to-emitter to clamp V_CE spikes during turn-off. The device lacks integrated protection, and exceeding 80 V V_CEO risks avalanche failure.