Infineon Technologies BCR108E6433HTMA1

Overview

BCR108E6433HTMA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = 2.2 kΩ, R2 = 47 kΩ), designed for switching, inverting, interface, and driver circuits in automotive and industrial control systems. It features V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V at I_C = 10 mA / I_B = 0.5 mA, and AEC-Q101 qualification.

For engineers reviewing the BCR108E6433HTMA1 datasheet, BCR108E6433HTMA1 pinout, BCR108E6433HTMA1 application, or BCR108E6433HTMA1 equivalent, key selection criteria include built-in resistor ratio (R1/R2 = 0.047), thermal resistance (R_thJS ≤ 240 K/W), junction temperature rating (T_j = 150 °C), and SOT23 package compatibility with automated assembly.

Technical Context

This digital transistor integrates two on-chip resistors to enable direct logic-level drive without external bias components. Its R1–R2 network sets a fixed base current path, supporting reliable saturation switching at V_i(on) = 0.5–1.1 V and V_i(off) = 0.4–0.8 V under defined load conditions.

The device operates in common-emitter configuration with h_FE ≥ 70 at I_C = 5 mA / V_CE = 5 V, f_T = 170 MHz, and C_cb = 2 pF - enabling use in medium-speed digital signal routing and level translation up to ~10 MHz edge rates.

Key Specifications

Pinout & Package

BCR108E6433HTMA1 is housed in a RoHS-compliant SOT23 plastic surface-mount package (3-pin, standard footprint per Infineon outline EHA07174). Pin 1 = Base (B), Pin 2 = Emitter (E), Pin 3 = Collector (C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847B,115 and NSV10800MT1G, BCR108E6433HTMA1 delivers optimal balance of integration (reduced component count), automotive qualification, and predictable switching behavior across temperature - making it preferred for new designs targeting AEC-Q101 compliance and rapid prototyping.

Availability

BCR108E6433HTMA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, LED backlight drivers, and smart appliance motor enable circuits requiring stable component supply and long-term lifecycle support.

Supply support for BCR108E6433HTMA1 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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and discrete devices, with global manufacturing and quality certification aligned to ISO/TS 16949 and AEC standards.

BCR108E6433HTMA1 belongs to Infineon's BCR family of digital transistors - engineered specifically for automotive and industrial interface applications where integration, reliability, and qualification consistency reduce design validation time.

FAQ

Is BCR108E6433HTMA1 pin-compatible with other SOT23 digital transistors like the MMBT2222A?

No. BCR108E6433HTMA1 uses Base–Emitter–Collector pinout (Pin 1=B, Pin 2=E, Pin 3=C), whereas MMBT2222A follows Emitter–Base–Collector (Pin 1=E, Pin 2=B, Pin 3=C). Swapping them causes functional failure or damage due to reversed bias network connection.

What is the maximum allowable continuous collector current at 85°C ambient?

At T_A = 85°C, derating applies per the P_tot vs. T_S curve: maximum total power dissipation drops to ~130 mW. With V_CE(sat) ≈ 0.25 V, the corresponding I_C limit is approximately 520 mA × (130 mW / 200 mW) ≈ 65 mA for continuous DC operation.

Can BCR108E6433HTMA1 be used in linear amplifier configurations?

No. It is optimized as a saturated switch, not a linear amplifier. The integrated R1–R2 network fixes bias point, and h_FE variation over I_C (shown in Fig. 4) and lack of linearity specs make it unsuitable for analog gain stages or Class-A operation.

Does this part support reflow soldering per JEDEC J-STD-020?

Yes. As a standard SOT23 package with Pb-free terminations, BCR108E6433HTMA1 complies with JEDEC J-STD-020D moisture sensitivity level (MSL) 1 and supports peak reflow temperatures up to 260°C for ≤ 30 seconds, verified per Infineon's packaging documentation.