Infineon Technologies BCP5310H6327XTSA1

Overview

BCP5310H6327XTSA1 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio-frequency driver and output stages in linear and switching applications. It features 80 V collector-emitter breakdown voltage (V_(BR)CEO), 1 A continuous collector current (I_C), 0.5 V collector-emitter saturation voltage (V_CE(sat)) at I_C = 500 mA / I_B = 50 mA, DC current gain (h_FE) of 63–100 at I_C = 150 mA, and 125 MHz transition frequency (f_T). It is used in automotive body control modules for relay and lamp driver circuits.

For engineers reviewing the BCP5310H6327XTSA1 datasheet, BCP5310H6327XTSA1 pinout, BCP5310H6327XTSA1 application, or BCP5310H6327XTSA1 equivalent, this page provides verified package mapping (SOT-223), terminal roles, thermal resistance (R_thJS ≤ 15 K/W), complementary NPN pairing (BCP56), and AEC-Q101 qualification status - all critical for automotive-grade discrete selection.

Technical Context

This PNP transistor operates in active, saturation, and cutoff regions with defined DC gain linearity across 5 mA to 500 mA collector current. Its low V_CE(sat) and high f_T support efficient switching in 12 V automotive loads while maintaining analog linearity for AF amplification stages.

The device uses epitaxial planar technology with emitter ballasting for current sharing and thermal stability. Junction temperature is rated to 150 °C, and R_thJS ≤ 15 K/W enables direct PCB copper pour heatsinking without external heatsinks in typical 1 W dissipation scenarios.

Key Specifications

Pinout & Package

BCP5310H6327XTSA1 is housed in a surface-mount SOT-223 package with four terminals: pins 1 (Base), 2 (Collector), 3 (Emitter), and 4 (Collector tab). The exposed collector tab serves as both electrical connection and primary thermal path to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCP53-16 and MMBT53-4LT1G, BCP5310H6327XTSA1 offers optimal balance of 80 V ruggedness, 1 A capability, and AEC-Q101 compliance - making it the default choice for production automotive switching where long-term thermal stability and transient immunity are mandatory.

Availability

BCP5310H6327XTSA1 is available at Aetrix Electronics and suitable for automotive lamp drivers, industrial relay interfaces, and audio output stages requiring stable component supply, long-lifecycle availability, and traceable RoHS-compliant sourcing.

Supply support for BCP5310H6327XTSA1 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 and discretes.

BCP5310H6327XTSA1 belongs to Infineon's BCP5x family of AEC-Q101-qualified PNP transistors engineered specifically for automotive body electronics, focusing on high-voltage robustness, thermal resilience, and seamless integration with microcontroller GPIOs.

FAQ

Is BCP5310H6327XTSA1 pin-compatible with BCP53-16?

Yes - both share identical SOT-223 pinout (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector tab) and mechanical footprint. The "10" and "16" denote h_FE gain bins, not package variants. No PCB redesign is needed when substituting between these versions.

What is the maximum allowable PCB copper area for thermal performance?

Infineon recommends ≥100 mm² of 2-oz copper connected to Pin 4 (collector tab) for full 2 W dissipation at T_S ≤ 120 °C. Smaller areas (≥25 mm²) support 1 W continuous operation with R_thJA ≈ 60 K/W per AN077 guidelines.

Does this transistor require a base resistor in switching applications?

Yes - a series base resistor is mandatory to limit I_B and ensure saturation. For 500 mA I_C, a 100 Ω resistor from a 5 V MCU GPIO delivers ~45 mA I_B, satisfying the h_FE-based drive requirement while preventing base overcurrent.

Can BCP5310H6327XTSA1 replace BC807 in existing designs?

No - BC807 uses SOT-23 (3-pin) packaging and has lower V_(BR)CEO (45 V) and I_C (0.5 A). Direct replacement would require PCB redesign, increased voltage derating, and loss of AEC-Q101 compliance. Use only after full thermal, electrical, and qualification revalidation.