Infineon Technologies BCR533E6327HTSA1

Overview

BCR533E6327HTSA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = R2 = 10 kΩ), designed for DC switching and signal amplification in automotive and industrial control circuits. It features V_CEO = 50 V, I_C = 500 mA, V_CE(sat) ≤ 0.3 V at I_C = 50 mA/I_B = 2.5 mA, h_FE ≥ 70, and AEC-Q101 qualification.

For engineers reviewing the BCR533E6327HTSA1 datasheet, BCR533E6327HTSA1 pinout, BCR533E6327HTSA1 application, or BCR533E6327HTSA1 equivalent, key selection criteria include built-in resistor ratio tolerance (R1/R2 = 0.9–1.1), input voltage thresholds (V_i(off) ≤ 1.5 V, V_i(on) ≥ 1 V), thermal resistance (R_thJS ≤ 215 K/W), and SOT23 package compatibility with high-density PCB layouts.

Technical Context

This digital transistor integrates two precision bias resistors to enable direct logic-level drive without external components-R1 connects base to input, R2 provides base-emitter shunt for reliable turn-off. Its common-emitter configuration supports fast switching with f_T = 100 MHz at I_C = 50 mA/V_CE = 5 V.

Designed for automotive-grade reliability, it operates across –65 °C to +150 °C junction temperature range and sustains 500 mA continuous collector current at T_S ≤ 79 °C, with P_tot = 330 mW derated linearly above that case temperature.

Key Specifications

Pinout & Package

BCR533E6327HTSA1 is housed in a RoHS-compliant SOT23 plastic surface-mount package (3.15 mm × 1.75 mm × 1.15 mm), optimized for automated assembly and thermal dissipation via PCB copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR533E6327HTSA1, the HTMA1 variant offers identical performance in a smaller reel format for flexible manufacturing, while XTSA1 adds halogen-free compliance without trade-offs in switching speed, saturation voltage, or bias resistor accuracy-making both drop-in alternatives for specific supply chain or regulatory requirements.

Availability

BCR533E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and LED backlight drivers requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for BCR533E6327HTSA1 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.

The BCR533 belongs to Infineon's automotive-qualified digital transistor product line, engineered specifically for robust, space-constrained switching in harsh-environment control units-emphasizing reliability, integrated biasing, and seamless microcontroller interfacing.

FAQ

What is the maximum safe operating voltage for BCR533E6327HTSA1?

The absolute maximum collector-emitter voltage (V_CEO) is 50 V, and collector-base voltage (V_CBO) is also rated at 50 V. Operation beyond these values risks avalanche breakdown. For 24 V automotive systems, this provides 100 % margin over nominal supply, supporting transients up to ISO 7637-2 Pulse 1 (–100 V) when used with appropriate clamping protection.

Can BCR533E6327HTSA1 replace a standard NPN transistor like BC847 in existing designs?

No-it is not a direct replacement due to its integrated bias resistors. Unlike BC847, BCR533E6327HTSA1 has fixed R1/R2 network connecting base to input and emitter; removing external bias resistors from a BC847 circuit would cause improper biasing. Redesign is required to leverage its digital-input architecture.

Does BCR533E6327HTSA1 support PWM dimming of LEDs at 1 kHz?

Yes-its 100 MHz f_T and ≤ 0.3 V V_CE(sat) support clean 1 kHz PWM switching with negligible rise/fall time impact. At I_C = 50 mA, switching losses remain below 0.5 mW per transition, making it suitable for dashboard backlight modulation without audible noise or thermal penalty.

Is the SOT23 package of BCR533E6327HTSA1 compatible with standard reflow profiles?

Yes-the device is qualified for Pb-free reflow per JEDEC J-STD-020, with peak temperature support up to 260 °C. Its SOT23 outline matches IPC-7351B SOIC_N-3 standard, ensuring compatibility with automated pick-and-place and convection reflow equipment used in high-volume manufacturing.