Infineon Technologies BCX5116H6327XTSA1

Overview

BCX5116H6327XTSA1 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 V_CEO = 45 V, I_C = 1 A continuous, V_CE(sat) ≤ 0.5 V at I_C = 500 mA / I_B = 50 mA, h_FE = 100–250 (at I_C = 150 mA), and SOT-89 surface-mount package. It is RoHS-compliant and AEC-Q101 qualified for automotive-grade reliability.

For engineers reviewing the BCX5116H6327XTSA1 datasheet, BCX5116H6327XTSA1 pinout, BCX5116H6327XTSA1 application, or BCX5116H6327XTSA1 equivalent, key selection criteria include DC current gain consistency at high collector current, low saturation voltage under 500 mA load, thermal resistance (R_thJS ≤ 15 K/W), and complementary NPN pairing with BCX54–BCX56 series.

Technical Context

This PNP BJT operates in active, saturation, and cutoff regions for linear amplification and switching control. Its design supports stable DC biasing with h_FE ≥ 100 at I_C = 150 mA and ≥ 25 at I_C = 500 mA, enabling predictable gain across mid-to-high current drive ranges.

Thermal performance is defined by R_thJS ≤ 15 K/W and P_tot = 2 W at T_S ≤ 120 °C, with pulse capability up to I_CM = 1.5 A (t_p ≤ 10 ms). The device meets AEC-Q101 stress testing requirements for automotive under-hood environments.

Key Specifications

Pinout & Package

SOT-89 package: 3-pin, single-ended surface-mount plastic case with exposed emitter pad for thermal conduction. Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter (confirmed per Infineon marking layout and pin configuration table).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX5116H6327XTSA1, BCX5116TA trades thermal capability for footprint reduction, while MMBT5087LT1G offers wider h_FE spread at low current but lacks automotive qualification and high-current gain validation.

Availability

BCX5116H6327XTSA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial fan controllers, audio amplifier output stages, and power supply enable switches requiring stable component supply and AEC-Q101 compliance.

Supply support for BCX5116H6327XTSA1 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 discrete devices.

BCX5116H6327XTSA1 belongs to the BCX51–BCX53 family of AEC-Q101-qualified PNP transistors engineered for high-reliability automotive signal and power switching in temperature-stressed environments.

FAQ

Is BCX5116H6327XTSA1 pin-compatible with BCX5116TA?

No. BCX5116H6327XTSA1 uses SOT-89 (3-pin, wide-body) with Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter. BCX5116TA uses SOT-23 (3-pin, narrow-body) with identical pin numbering but different mechanical dimensions and thermal characteristics. PCB footprints are not interchangeable.

What is the maximum allowable junction temperature during pulsed operation?

The absolute maximum junction temperature remains 150 °C per datasheet. Under pulsed conditions (t_p ≤ 10 ms, duty cycle < 2%), peak I_C may reach 1.5 A, but thermal limits still apply - junction temperature must be calculated using R_thJS ≤ 15 K/W and actual power dissipation to avoid exceeding 150 °C.

Does BCX5116H6327XTSA1 support direct replacement for BCX53-16 in the same circuit?

No. BCX53-16 has V_CEO = 80 V and higher breakdown ratings. Substituting BCX5116H6327XTSA1 (V_CEO = 45 V) risks avalanche failure in circuits operating near 60 V. Only acceptable if system V_CE never exceeds 35 V with margin.

How is the SOT-89 exposed pad intended to be used thermally?

The SOT-89 package exposes the emitter metallization on the underside of the molded body. It must be soldered directly to a large, thermally conductive PCB copper area (≥ 100 mm² recommended) to achieve R_thJS ≤ 15 K/W. No thermal compound or additional heatsink is required for 2 W dissipation at T_S ≤ 120 °C.