Infineon Technologies BCX5316E6327HTSA1

Overview

BCX5316E6327HTSA1 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 = 80 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. Used in automotive lighting drivers and industrial relay interface circuits.

For engineers reviewing the BCX5316E6327HTSA1 datasheet, BCX5316E6327HTSA1 pinout, BCX5316E6327HTSA1 application, or BCX5316E6327HTSA1 equivalent, key selection criteria include guaranteed h_FE range at high I_C, low V_CE(sat) under 500 mA drive, thermal resistance R_thJS ≤ 15 K/W, AEC-Q101 qualification, and complementary NPN pairing with BCX56 series.

Technical Context

This PNP BJT operates in active, saturation, and cutoff regions for linear amplification and hard-switching functions. Its design supports stable DC current gain across I_C = 5 mA to 500 mA with V_CE = 2 V bias, and maintains low saturation voltage even at elevated junction temperatures up to 150 °C.

The device uses epitaxial planar technology with Pb-free (RoHS-compliant) metallization and is qualified per AEC-Q101 for automotive-grade reliability. Thermal performance is defined by R_thJS ≤ 15 K/W from junction to soldering point, enabling operation at P_tot = 2 W with T_S ≤ 120 °C.

Key Specifications

Pinout & Package

SOT-89 package: 3-pin, single-ended surface-mount plastic case with exposed emitter pad for thermal enhancement. Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter (standard BCX series configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX53-16, the E6327HTSA1 offers identical performance in optimized SMT packaging; versus MJD2955G, it trades off absolute voltage/current headroom for automotive qualification, smaller footprint, and lower assembly cost in high-volume PCB assembly.

Availability

BCX5316E6327HTSA1 is available at Aetrix Electronics and suitable for automotive lighting control, industrial relay interfaces, DC motor half-bridges, and linear audio pre-amplifiers requiring stable component supply and AEC-Q101 compliance.

Supply support for BCX5316E6327HTSA1 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 ICs, and discrete devices, with global R&D and manufacturing infrastructure.

BCX5316E6327HTSA1 belongs to Infineon's BCX family of general-purpose bipolar transistors engineered for high-reliability linear and switching applications in automotive and industrial environments.

FAQ

Is BCX5316E6327HTSA1 pin-compatible with BCX53-16?

Yes - both share identical SOT-89 package outline, pin 1 (Base), pin 2 (Collector), pin 3 (Emitter) assignment, and thermal pad layout. The "E6327HTSA1" suffix denotes Infineon's standard 1000-piece tape-and-reel packaging; electrical and mechanical compatibility is fully maintained.

What is the maximum safe operating temperature for continuous 1 A collector current?

At I_C = 1 A, P_tot ≈ 0.5 W (assuming V_CE(sat) ≈ 0.5 V). With R_thJS ≤ 15 K/W and T_S ≤ 120 °C, junction temperature remains below 150 °C - the rated T_j limit - provided soldering point temperature is controlled per AN077 guidelines.

Can BCX5316E6327HTSA1 replace BCX51 or BCX52 in existing designs?

No - BCX53 has higher V_CEO (80 V vs. 45/60 V) and different h_FE distribution. Substituting it into BCX51/52 circuits may cause overvoltage stress on base drive components or unintended gain shifts; redesign validation is required for safety-critical use.

Does this transistor support pulse operation beyond its DC ratings?

Yes - per datasheet Figure 6, it supports peak collector current up to 1.5 A for pulses ≤10 ms (duty cycle ≤2%). Pulse derating follows P_tot(max)/P_tot(DC) curves; at t_p = 1 ms, allowable peak power rises to ~4.5 W with D = 0.1.