Infineon Technologies BCW61BE6327HTSA1

Overview

BCW61BE6327HTSA1 from Infineon Technologies is a PNP silicon small-signal transistor designed for audio-frequency input stages and driver circuits. It delivers h_FE = 180–200 (at I_C = 2 mA, V_CE = 5 V), V_CEO = 32 V, V_CE(sat) ≤ 0.25 V (I_C = 50 mA, I_B = 1.25 mA), and low noise of 2 dB (I_C = 200 µA, f = 1 kHz). It is used in automotive sensor signal conditioning and industrial analog front-ends.

For engineers reviewing the BCW61BE6327HTSA1 datasheet, BCW61BE6327HTSA1 pinout, BCW61BE6327HTSA1 application, or BCW61BE6327HTSA1 equivalent, key selection criteria include guaranteed h_FE group B/H, SOT23 package thermal resistance (R_thJS ≤ 240 K/W), low V_CE(sat) at medium current, and AEC-Q101 qualification for automotive use.

Technical Context

This transistor operates as a linear PNP amplifier with DC current gain defined across three test conditions: h_FE ≥ 180 at I_C = 2 mA, ≥ 140 at I_C = 50 mA, and ≥ 30 at I_C = 10 µA - enabling stable biasing in both low-current sensing and medium-drive applications. Its f_T = 250 MHz supports high-fidelity AF amplification up to 15 kHz with minimal phase shift.

The device features complementary NPN counterparts (BCW60/BCX70), shares identical SOT23 pinout and thermal profile with BCX71 variants, and meets AEC-Q101 stress testing for temperature cycling, HTRB, and ESD (HBM ≥ 2 kV). Junction-to-solder-point thermal resistance is specified at ≤240 K/W under TS ≤ 71 °C.

Key Specifications

Pinout & Package

BCW61BE6327HTSA1 is housed in a RoHS-compliant SOT23 plastic surface-mount package with gull-wing leads and standard JEDEC MO-178 footprint. The package supports reflow soldering per IPC/JEDEC J-STD-020 and provides thermal dissipation up to 330 mW at T_S ≤ 71 °C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP small-signal transistor applications.

Compared with BCW61BRL1G, BCW61BE6327HTSA1 offers automotive-grade reliability and tighter thermal specification; versus BCX71B, it trades 13 V headroom for optimized thermal resistance and proven fit in legacy SOT23 driver footprints.

Availability

BCW61BE6327HTSA1 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial analog front-ends, audio input stages, and power supply sequencing requiring stable component supply across extended temperature and lifecycle conditions.

Supply support for BCW61BE6327HTSA1 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 and discrete devices.

This transistor belongs to Infineon's BCW/BCX family of AEC-Q101-qualified bipolar transistors engineered for robust, low-noise signal amplification and switching in automotive and industrial analog subsystems.

FAQ

What is the maximum continuous collector current for BCW61BE6327HTSA1?

The absolute maximum continuous collector current is 100 mA at T_S ≤ 71 °C. At higher case temperatures, derating applies per the P_tot vs. T_S curve - e.g., 60 mA at T_S = 100 °C. Peak pulsed current reaches 200 mA for t_p ≤ 10 ms with duty cycle ≤ 2%.

Is BCW61BE6327HTSA1 suitable for linear amplifier applications?

Yes - its low noise figure (2 dB), high h_FE consistency, and f_T = 250 MHz make it well-suited for linear AF amplification. It is characterized for operation at I_C = 10 µA to 50 mA with V_CE = 1–5 V, supporting Class-A and AB biasing in sensor interfaces and audio preamps.

How does the SOT23 package affect thermal performance?

The SOT23 package limits total power dissipation to 330 mW at T_S = 71 °C, with R_thJS ≤ 240 K/W. Effective thermal design requires ≥10 mm² of 1-oz copper connected to the emitter pad and minimized trace length to reduce junction-to-ambient resistance in real-world PCB layouts.

Can BCW61BE6327HTSA1 replace BCW60 in a circuit?

No - BCW60 is an NPN complement. Direct replacement would invert logic polarity and require schematic redesign. However, BCW61BE6327HTSA1 pairs functionally with BCW60 in push-pull or differential configurations where matched h_FE groups (e.g., BCW60B + BCW61B) ensure balanced gain and offset.