Infineon Technologies BCR169WE6327HTSA1

Overview

BCR169WE6327HTSA1 from Infineon Technologies is a PNP silicon digital transistor with integrated 4.7 kΩ bias resistor (R1), designed for switching, inverting, interfacing, 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 = 120–630, and AEC-Q101 qualification.

For engineers reviewing the BCR169WE6327HTSA1 datasheet, BCR169WE6327HTSA1 pinout, BCR169WE6327HTSA1 application, or BCR169WE6327HTSA1 equivalent, key selection criteria include built-in bias resistor value, SOT-323 package thermal resistance (R_thJS ≤ 105 K/W), junction temperature rating (T_j = 150 °C), and automotive-grade reliability per AEC-Q101.

Technical Context

This device integrates a single PNP bipolar transistor with monolithically embedded base bias resistor R1 (typ. 4.7 kΩ), eliminating external bias components in low-power switching applications. Its common-emitter configuration supports direct logic-level drive with defined Vi(on)/Vi(off) thresholds (0.5–1.1 V / 0.4–0.8 V) and stable h_FE across −40 °C to 125 °C.

Thermal performance is optimized for surface-mount operation in constrained PCB spaces: P_tot = 250 mW at T_S ≤ 124 °C, with R_thJS ≤ 105 K/W enabling reliable power handling in automotive cabin and engine-control modules without heatsinking.

Key Specifications

Pinout & Package

BCR169WE6327HTSA1 is housed in a RoHS-compliant SOT-323 (SC-70) plastic package with gull-wing leads, optimized for automated pick-and-place and reflow soldering. The package measures 2.13 × 1.3 × 0.9 mm and supports high-density board layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR169SE6327HTSA1 and NSV169WQX, BCR169WE6327HTSA1 uniquely balances AEC-Q101 compliance, compact SOT-323 packaging, and verified 100 mA switching capability-making it optimal for space-constrained automotive signal switching where qualification and thermal efficiency are mandatory.

Availability

BCR169WE6327HTSA1 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC output stages, and appliance motor interface applications requiring stable component supply, AEC-Q101 reliability, and SMT-compatible packaging.

Supply support for BCR169WE6327HTSA1 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 infrastructure.

BCR169W belongs to Infineon's BCR series of digital transistors-designed specifically for replacing discrete BJT + resistor combinations in automotive body electronics and industrial interface circuits.

FAQ

Is BCR169WE6327HTSA1 pin-compatible with standard SOT-323 NPN transistors like BC846?

No. BCR169WE6327HTSA1 is a PNP digital transistor with integrated base resistor and fixed pinout (1=B, 2=E, 3=C). Standard NPN transistors such as BC846 have different polarity, no internal resistor, and incompatible biasing requirements. Direct substitution would reverse current flow and likely damage the circuit.

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

The absolute maximum input reverse voltage (Vi(rev)) is 5 V, and input forward voltage (Vi(fwd)) is rated to 30 V. For safe continuous operation, keep base-emitter voltage ≤ 5 V. Exceeding Vi(rev) risks damaging the internal R1 network or junction integrity, especially during hot-swap or ESD events.

Does this part support PWM switching at frequencies above 10 kHz?

Yes. With f_T = 200 MHz and V_CE(sat) stable up to 20 MHz in pulse conditions, BCR169WE6327HTSA1 supports PWM switching well beyond 10 kHz. However, layout parasitics and load capacitance dominate timing at >100 kHz; verify rise/fall times empirically in target application.

How does the built-in R1 affect compatibility with 3.3 V microcontrollers?

Vi(on) ranges from 0.5–1.1 V at I_C = 2 mA, ensuring reliable turn-on with 3.3 V GPIOs even with series resistance or voltage drop. The 4.7 kΩ R1 provides sufficient base current (≈0.7 mA at 3.3 V) to achieve h_FE-dependent saturation, making it directly compatible without external level-shifting.