Infineon Technologies BCR198B6327HTLA1

Overview

BCR198B6327HTLA1 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 BCR198B6327HTLA1 datasheet, BCR198B6327HTLA1 pinout, BCR198B6327HTLA1 application, or BCR198B6327HTLA1 equivalent, this part serves as a single-NPN-configured, resistor-equipped switch optimized for low-side load control, logic-level translation, and discrete gate driving where space-constrained SOT23 packaging and guaranteed turn-on/off thresholds are critical.

Technical Context

This digital transistor integrates two matched 47 kΩ bias resistors to form a monolithic PNP switch with defined input threshold behavior-Vi(on) = 1–3 V and Vi(off) = 0.8–1.5 V-enabling direct microcontroller GPIO interfacing without external base resistors. Its h_FE ≥ 70 at I_C = 5 mA ensures reliable saturation under typical logic-drive conditions.

The device operates across –40 °C to +125 °C junction temperature, supports pulsed loads up to 300 mW (derated above T_S = 102 °C), and achieves f_T = 190 MHz, making it suitable for medium-speed switching (< 1 MHz) in power management and signal conditioning stages.

Key Specifications

Pinout & Package

BCR198B6327HTLA1 is housed in a Pb-free, RoHS-compliant SOT23 package (JEDEC TO-236AB), measuring 2.9 mm × 1.3 mm × 1.0 mm, with gull-wing leads and thermal pad omitted. Pin 1 is emitter (E), Pin 2 is base (B), and Pin 3 is collector (C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC807-40,215 and NSV198000T1G, BCR198B6327HTLA1 uniquely combines AEC-Q101 qualification, matched dual-bias resistors, and guaranteed input thresholds-making it the preferred choice for automotive-grade, space-constrained, and production-ready digital switching.

Availability

BCR198B6327HTLA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital outputs, and consumer appliance motor drivers requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.

Supply support for BCR198B6327HTLA1 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 certification aligned to ISO/TS 16949.

BCR198B6327HTLA1 belongs to Infineon's BCR family of digital transistors-designed specifically for automotive and industrial switching applications where integration, reliability, and standardized input behavior reduce design risk and time-to-market.

FAQ

Is BCR198B6327HTLA1 pin-compatible with BC857 or BC807 series transistors?

No. BCR198B6327HTLA1 uses SOT23 with E-B-C pinout (Emitter=Pin1, Base=Pin2, Collector=Pin3), whereas BC857/BC807 have C-B-E pinout. Additionally, BCR198 includes integrated bias resistors; BC857/BC807 are bare transistors requiring external base resistors. Direct substitution would cause incorrect biasing and potential damage.

What is the maximum allowable base drive voltage for reliable operation?

The absolute maximum input reverse voltage Vi(rev) is 10 V, and input forward voltage Vi(fwd) is rated at 80 V. However, for safe and specified operation, keep input voltage between 0.8 V (Vi(off)) and 3 V (upper Vi(on) limit) to ensure clean switching without exceeding R1/R2 power dissipation or inducing latch-up in adjacent circuitry.

Does BCR198B6327HTLA1 support PWM switching at 20 kHz?

Yes. With f_T = 190 MHz and V_CE(sat) ≤ 0.3 V, the device supports clean 20 kHz PWM operation in low-duty-cycle applications. Rise/fall times are typically <50 ns, but actual performance depends on load capacitance and PCB layout; parasitic inductance must be minimized to avoid overshoot.

Can BCR198B6327HTLA1 replace a 2N3906 in existing designs?

Only with schematic and layout revision. While both are PNP transistors, BCR198B6327HTLA1 has integrated 47 kΩ bias resistors and fixed input thresholds, whereas 2N3906 requires external base resistors and offers no guaranteed Vi(on)/Vi(off). Substitution without redesign risks improper biasing, thermal runaway, or failure to saturate.