Infineon Technologies BCX6825H6327XTSA1

Overview

BCX6825H6327XTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for general-purpose audio-frequency amplification and switching. It delivers 1 A continuous collector current, 250–375 DC current gain (h_FE) at I_C = 1 A / V_CE = 1 V, 0.5 V max V_CE(sat), and operates up to 150 °C junction temperature in SOT-89 package. It serves in low-voltage power switching stages of automotive body control modules.

For engineers reviewing the BCX6825H6327XTSA1 datasheet, BCX6825H6327XTSA1 pinout, BCX6825H6327XTSA1 application, or BCX6825H6327XTSA1 equivalent, key selection criteria include verified h_FE range at high I_C, thermal resistance R_thJS ≤ 12 K/W, V_CE(sat) performance under 100 mA base drive, and AEC-Q101 qualification for automotive use.

Technical Context

This transistor uses planar epitaxial silicon technology with a vertically integrated structure optimized for high-current linear and saturated switching operation. Its h_FE is specified from 160 to 375 at I_C = 1 A, ensuring stable gain across production lots under defined bias conditions (V_CE = 1 V).

The device features low V_CE(sat) (≤ 0.5 V) at I_C = 1 A / I_B = 100 mA and supports pulsed operation up to 2 A (t_p ≤ 10 ms), enabled by its 3 W total power dissipation rating at T_S ≤ 114 °C and R_thJS ≤ 12 K/W thermal path.

Key Specifications

Pinout & Package

SOT-89 package: surface-mount, 3-pin, single-ended leadframe with exposed thermal pad (pin 2 connected to collector). Dimensions: 4.5 × 2.5 × 1.5 mm (L × W × H), pitch 2.3 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN high-current switching applications.

Compared with BCX68-25,115 and MJD122G, BCX6825H6327XTSA1 uniquely balances automotive qualification, compact SOT-89 form factor, and high h_FE at full 1 A load-making it optimal for space-constrained, thermally demanding automotive modules.

Availability

BCX6825H6327XTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and LED driver designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for BCX6825H6327XTSA1 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.

BCX6825H6327XTSA1 belongs to Infineon's BCX68 family of AEC-Q101-qualified NPN transistors, engineered specifically for high-reliability, medium-current switching in automotive body control units and industrial actuator drivers.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current is 100 mA DC. Exceeding this value risks metallization failure or bond wire degradation. For reliable 1 A collector switching, a peak base current of 100 mA is sufficient due to the device's high h_FE; sustained base drive should be limited to ≤ 70 mA to maintain long-term reliability under thermal stress.

Does BCX6825H6327XTSA1 support pulsed operation beyond its DC ratings?

Yes-it supports peak collector current up to 2 A for pulse widths ≤ 10 ms (duty cycle ≤ 2%). This is validated by its permissible pulse load curve and thermal time constant. Designers must ensure average power remains within 3 W and junction temperature stays below 150 °C using appropriate PCB copper area and thermal vias.

How does the SOT-89 package affect thermal performance in real-world PCB layouts?

The SOT-89's exposed collector pad (pin 2) must be soldered to ≥ 100 mm² of 2-oz copper with ≥ 4 thermal vias (0.3 mm diameter) to achieve the rated R_thJS ≤ 12 K/W. Without this, R_thJA degrades significantly-measured data shows >45 K/W on minimal copper, limiting usable power to <1 W.

Is BCX6825H6327XTSA1 pin-compatible with BCX69 series PNP transistors?

No-while BCX6825 and BCX69-25 share identical SOT-89 footprints and pin numbering (E-C-B), their complementary polarity means direct substitution would invert circuit function. They are intended for matched pair use in push-pull or H-bridge topologies, not drop-in replacement. Layout must preserve emitter-collector orientation.