Infineon Technologies BCR198E6433HTMA1

Overview

BCR198E6433HTMA1 from Infineon Technologies is a PNP silicon digital transistor with integrated bias resistors (R1 = 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, h_FE ≥ 70, and AEC-Q101 qualification.

For engineers reviewing the BCR198E6433HTMA1 datasheet, BCR198E6433HTMA1 pinout, BCR198E6433HTMA1 application, or BCR198E6433HTMA1 equivalent, key selection criteria include built-in resistor matching, thermal resistance (R_thJS ≤ 240 K/W), SOT23 package compatibility, and guaranteed performance across −40 °C to 125 °C junction temperature range.

Technical Context

This digital transistor integrates two matched PNP transistors in a single SOT23 package with monolithically embedded base bias resistors-enabling direct logic-level interfacing without external components. Its R1/R2 ratio of 0.9–1.1 ensures consistent turn-on/off thresholds and reduces component count in level-shifting and load-switching nodes.

The device operates as a saturated switch with guaranteed V_CE(sat) ≤ 0.3 V under defined drive conditions and supports pulse operation up to 300 µs (duty < 2%). Thermal derating follows a defined P_tot vs. T_S curve, with maximum power dissipation of 200 mW at T_S ≤ 102 °C.

Key Specifications

Pinout & Package

BCR198E6433HTMA1 is housed in a Pb-free, RoHS-compliant SOT23 plastic package (JEDEC TO-236AB), with standard 3-pin configuration and 1.3 mm pitch. 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 PNP digital transistor applications.

Compared with BC807-40 and MMBT3906LT1G, BCR198E6433HTMA1 delivers reduced bill-of-materials, guaranteed input threshold behavior, and automotive qualification-making it optimal for space-constrained, safety-aware switching nodes where consistency and qualification matter more than raw gain.

Availability

BCR198E6433HTMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, consumer appliance power sequencing, and medical diagnostic equipment requiring stable component supply and AEC-Q101 compliance.

Supply support for BCR198E6433HTMA1 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 electronics, and industrial control ICs, with global manufacturing and quality certifications including IATF 16949.

The BCR198 series belongs to Infineon's digital transistor product line, engineered specifically for simplified logic interfacing and robust switching in harsh-environment applications such as automotive and industrial automation.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature (T_j) is 150 °C. Continuous operation must ensure T_j stays within this limit, using the provided R_thJS ≤ 240 K/W and P_tot vs. T_S derating curves. At T_S = 102 °C, maximum DC power is 200 mW; exceeding this requires thermal analysis or forced cooling.

Can BCR198E6433HTMA1 be used in high-frequency switching applications above 1 MHz?

Yes-its f_T = 190 MHz (typ.) supports clean switching up to ~10 MHz with proper PCB layout and gate drive. However, its primary design intent is digital on/off operation, not RF amplification; parasitic capacitance (C_cb = 3 pF) and saturation recovery time limit ultra-high-speed use.

Is the SOT23 package lead-free and compatible with standard reflow profiles?

Yes-BCR198E6433HTMA1 uses a Pb-free, RoHS-compliant SOT23 package qualified for JEDEC J-STD-020D reflow, with peak temperature tolerance up to 260 °C for 30 seconds. The package meets IPC-A-610 Class 2/3 acceptability standards for automated assembly.

How does the built-in resistor ratio affect logic compatibility with 3.3 V microcontrollers?

With R1/R2 = 0.9–1.1 and Vi(on) = 1–3 V, the device reliably turns on from 3.3 V GPIOs (even with 0.5 V noise margin). Vi(off) ≤ 1.5 V ensures solid cutoff when driven low, making it compatible with both 3.3 V and 5 V logic families without level shifters.