Infineon Technologies BCX5310E6327HTSA1

Overview

BCX5310E6327HTSA1 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio frequency driver and output stages in linear amplifiers and switching applications. It features V_CEO = 80 V, I_C = 1 A continuous, h_FE = 63–100 at I_C = 150 mA, V_CE(sat) = 0.5 V max at I_C = 500 mA / I_B = 50 mA, and SOT-89 surface-mount package. It is used in automotive body control modules for relay and lamp driver circuits.

For engineers reviewing the BCX5310E6327HTSA1 datasheet, BCX5310E6327HTSA1 pinout, BCX5310E6327HTSA1 application, or BCX5310E6327HTSA1 equivalent, key selection criteria include guaranteed h_FE range at high I_C, low V_CE(sat) under 500 mA load, 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 (h_FE ≥ 63 at I_C = 150 mA) and low saturation voltage (V_CE(sat) ≤ 0.5 V) under defined base drive, enabling efficient power stage operation in 12 V automotive systems.

The device meets AEC-Q101 stress test requirements for automotive use and uses Pb-free SOT-89 packaging with thermal performance validated up to T_J = 150 °C. Junction-to-soldering-point thermal resistance is specified at ≤ 15 K/W, supporting reliable power dissipation of 2 W at T_S ≤ 120 °C.

Key Specifications

Pinout & Package

BCX5310E6327HTSA1 is housed in a standard SOT-89 plastic surface-mount package with gull-wing leads, optimized for thermal conduction via the exposed emitter pad. The package measures 4.5 mm × 2.5 mm × 1.5 mm and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX53-16E6327HTSA1, BCX5310E6327HTSA1 trades higher h_FE tolerance for lower cost and same thermal performance; versus MJD2955T4G, it delivers equivalent switching capability in 1/5 the footprint and 3× better thermal resistance in SMT layout.

Availability

BCX5310E6327HTSA1 is available at Aetrix Electronics and suitable for automotive lamp drivers, relay coil interfaces, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BCX5310E6327HTSA1 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 security solutions, with global R&D and manufacturing infrastructure.

BCX5310E6327HTSA1 belongs to Infineon's BCX5x family of general-purpose PNP transistors engineered for high-reliability automotive and industrial switching and amplification applications.

FAQ

Is BCX5310E6327HTSA1 AEC-Q101 qualified?

Yes. BCX5310E6327HTSA1 is explicitly qualified to AEC-Q101 Rev D for stress testing including HTGB, HTRB, temperature cycling, and ESD. This certification is documented in Infineon's official product brief and qualification report dated July 2011.

What is the maximum safe operating current at 85 °C ambient?

At T_A = 85 °C with standard SOT-89 PCB layout (1 cm² 2-oz copper), derated I_C is approximately 750 mA. This is calculated using P_tot = 2 W, R_thJA ≈ 120 K/W (per AN077), and T_J(max) = 150 °C, yielding ΔT = 65 K and allowable power = 0.54 W → I_C ≈ 0.75 A at V_CE(sat) = 0.5 V.

Can BCX5310E6327HTSA1 replace BCX53-16 in existing designs?

Yes, with functional verification. Both share identical pinout, package, V_CEO, V_CE(sat), and thermal specs. The only difference is h_FE range: BCX5310 specifies 63–100 vs. BCX53-16's 100–160. Base resistor values may require minor adjustment if original design relied on minimum h_FE = 100.

Does this transistor support pulsed operation above 1 A?

Yes. Peak collector current I_CM is rated at 1.5 A for pulse width ≤ 10 ms and duty cycle ≤ 2%. The permissible pulse load curve (Fig. 6) confirms 1.5 A is sustainable at t_p = 1 ms with D = 0.02, provided PCB thermal design maintains T_J < 150 °C.