Infineon Technologies BCW61E6384HTMA1

Overview

BCW61E6384HTMA1 from Infineon Technologies is an NPN general-purpose bipolar junction transistor (BJT) in SOT-23 package, with DC current gain (h_FE) of 100–250 at I_C = 2 mA, V_CE = 5 V, maximum collector-emitter voltage V_CEO = 45 V, and continuous collector current I_C = 100 mA. It is used in low-power signal amplification and switching circuits in consumer audio and industrial sensor interface modules.

For engineers reviewing the BCW61E6384HTMA1 datasheet, BCW61E6384HTMA1 pinout, BCW61E6384HTMA1 application, or BCW61E6384HTMA1 equivalent, key selection criteria include h_FE range consistency, V_CEO margin for 24 V rail systems, SOT-23 thermal resistance, and base drive compatibility with 3.3 V microcontroller GPIOs.

Technical Context

This BJT operates in active and saturation regions for analog amplification and digital switching respectively. Its h_FE is specified across I_C = 2–10 mA and V_CE = 1–5 V, supporting stable biasing in emitter-follower and common-emitter configurations.

Thermal performance is defined by R_θJA = 350 K/W (SOT-23, on FR-4, 1 cm² copper), limiting power dissipation to ~140 mW at T_A = 50 °C. The device exhibits typical V_CE(sat) = 0.15 V at I_C = 10 mA and I_B = 0.5 mA, enabling low-loss switching in discrete logic-level translators.

Key Specifications

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads; standard pin assignment per JEDEC TO-236AB outline.

Key Features

Applications

Availability

BCW61E6384HTMA1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, consumer audio front-ends, LED status indicators, and discrete logic level translation requiring stable component supply and AEC-Q101 qualification.

Supply support for BCW61E6384HTMA1 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.

The BCW61 series belongs to Infineon's portfolio of general-purpose BJTs designed for cost-sensitive, high-reliability signal conditioning and switching in automotive and industrial applications.

FAQ

Is BCW61E6384HTMA1 pin-compatible with BCW61B or BCW61C?

Yes - all BCW61 variants share identical SOT-23 pinout (E-B-C) and mechanical dimensions. However, h_FE bins differ: BCW61B is 100–160, BCW61C is 160–250, while BCW61E is 100–250. Circuit designs relying on minimum h_FE must verify bias stability across the full range.

What is the maximum allowable base current for reliable operation?

The absolute maximum base current is 10 mA per Infineon's datasheet. For continuous operation, design base drive to limit I_B ≤ 1 mA at V_BB = 5 V using a ≥4.7 kΩ series resistor, ensuring I_C/I_B ≤ 100 to avoid deep saturation and slow turn-off.

Does BCW61E6384HTMA1 support pulsed operation beyond its DC ratings?

Yes - the device allows I_C(pulse) = 200 mA at duty cycle ≤ 10% and pulse width ≤ 1 ms, provided average power remains below 250 mW. Thermal limits still apply; board layout must sustain peak junction temperature < 150 °C.

Can BCW61E6384HTMA1 be used in linear regulator pass elements?

No - it lacks safe operating area (SOA) characterization for linear regulation and has no guaranteed SOA curve above V_CE > 10 V. Its primary design intent is switching and small-signal amplification, not power dissipation in active region.