Infineon Technologies BCV26E6327HTSA1

Overview

BCV26E6327HTSA1 from Infineon Technologies is a PNP silicon Darlington transistor designed for general audio-frequency amplification and low-speed switching in automotive and industrial control circuits. It delivers 500 mA continuous collector current, minimum DC current gain of 4000 at IC = 100 µA, VCE = 1 V, and features 30 V VCEO rating with SOT23 package for space-constrained PCB layouts.

For engineers reviewing the BCV26E6327HTSA1 datasheet, BCV26E6327HTSA1 pinout, BCV26E6327HTSA1 application, or BCV26E6327HTSA1 equivalent, key selection criteria include its high hFE at low bias, VCEsat ≤ 1 V at IC = 100 mA/IB = 0.1 mA, thermal resistance RthJS ≤ 210 K/W, AEC-Q101 qualification, and complementary NPN pairing with BCV27.

Technical Context

The BCV26E6327HTSA1 integrates two cascaded PNP transistors in a single SOT23 die to achieve ultra-high current gain without external bias network complexity. Its Darlington configuration enables direct drive of relays, LEDs, and small solenoids from microcontroller GPIOs with minimal base current-typically under 100 µA for 100 mA load.

It operates within −65 °C to +150 °C junction temperature range and supports pulsed operation up to 800 mA (tp ≤ 10 ms). The device exhibits fT = 200 MHz at IC = 50 mA/VCE = 5 V and Ccb = 4.5 pF at VCB = 10 V, confirming suitability for AF signal amplification rather than RF use.

Key Specifications

Pinout & Package

SOT23-3 plastic surface-mount package with gull-wing leads, 1.3 mm pitch, and 2.9 mm × 1.3 mm footprint. RoHS-compliant, lead-free termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCV26E6327HTSA1, BCV27E6327HTSA1 provides polarity-matched functionality in dual-transistor designs, while MMDT3906-7-F trades Darlington gain for higher speed and lower VCEsat-but cannot replicate the 4000× current multiplication essential for low-power microcontroller interfacing.

Availability

BCV26E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output modules, and portable audio amplifier designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BCV26E6327HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q standards.

The BCV26E6327HTSA1 belongs to Infineon's BCVxx family of discrete bipolar transistors engineered specifically for AEC-Q101-compliant automotive signal conditioning and load switching applications.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current (IB) is 100 mA, but for reliable long-term operation, IB should be limited to ≤10 mA under continuous DC conditions. At IC = 100 mA, typical IB is 0.1 mA due to Darlington hFE ≥ 4000; exceeding 1 mA base current offers no performance benefit and increases junction heating unnecessarily.

Can BCV26E6327HTSA1 replace BCV26 in legacy designs?

Yes-BCV26E6327HTSA1 is the tape-and-reel packaged, RoHS-compliant, AEC-Q101 qualified version of the original BCV26. Pinout, electrical specs, thermal characteristics, and SOT23 footprint are identical; only packaging format and compliance status differ. No layout or schematic changes are required.

Is this device suitable for switching inductive loads like relays?

Yes, it is commonly used for relay driving. With VCEO = 30 V and built-in clamp diode capability via external flyback diode placement (anode to emitter, cathode to collector), it safely handles back-EMF. Derate IC to 300 mA for >100,000-cycle relay life; ensure VCEsat remains ≤0.8 V during hold phase.

How does temperature affect DC current gain?

hFE increases with junction temperature up to ~125 °C, then declines above that point. At TA = −55 °C, hFE drops to ~70% of room-temperature value; at TA = 125 °C, it rises to ~130%. Designers must verify minimum hFE at worst-case cold start (−40 °C) and thermal shutdown margin at max ambient + self-heating.