Infineon Technologies BCV29E6327HTSA1

Overview

BCV29E6327HTSA1 from Infineon Technologies is an NPN silicon Darlington transistor in SOT-89 package, rated for 30 V V_CEO, 500 mA I_C, and 1 W P_tot at T_S ≤ 130 °C. It delivers high DC current gain (h_FE = 4000–20000), low V_CE(sat) ≤ 1 V at I_C = 100 mA/I_B = 0.1 mA, and f_T = 150 MHz - used in automotive body control modules for driving relays and solenoids.

For engineers reviewing the BCV29E6327HTSA1 datasheet, BCV29E6327HTSA1 pinout, BCV29E6327HTSA1 application, or BCV29E6327HTSA1 equivalent, key selection criteria include guaranteed h_FE ≥ 4000 at I_C = 100 µA, AEC-Q101 qualification, thermal resistance R_thJS ≤ 20 K/W, and complementary PNP pairing with BCV28.

Technical Context

This Darlington pair integrates two NPN transistors in a single SOT-89 package to achieve high current gain while maintaining manageable base drive requirements. Its structure supports linear amplification and switching in medium-power analog and digital interface circuits where low input current and robust saturation performance are essential.

Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and operates across –65 °C to +150 °C junction temperature range. Electrical characteristics are fully specified at T_A = 25 °C and extended to T_A = 150 °C for leakage parameters, enabling use in under-hood environments.

Key Specifications

Pinout & Package

SOT-89 package: 3-pin surface-mount plastic case with exposed thermal pad (pin 2 = collector tab), standardized footprint per Infineon outline drawing, JEDEC MO-220 compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCV27E6327HTSA1, BCV29E6327HTSA1 offers 20% higher voltage margin and 2× minimum h_FE; versus MJD2955G, it provides Darlington-level gain in half the footprint but requires complementary PNP for push-pull use.

Availability

BCV29E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial I/O modules, and LED driver circuits requiring stable component supply, AEC-Q101 compliance, and SOT-89 thermal performance.

Supply support for BCV29E6327HTSA1 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 infrastructure.

BCV29E6327HTSA1 belongs to Infineon's BCV series of general-purpose bipolar transistors designed specifically for AEC-Q101-compliant automotive signal and power interface applications.

FAQ

Is BCV29E6327HTSA1 pin-compatible with BCV49E6327HTSA1?

No. Although both use SOT-89 packaging and share identical pin 1 (B), pin 2 (C), pin 3 (E) assignments, BCV49 has V_CEO = 60 V and V_CBO = 80 V - higher ratings require verification of layout clearance and thermal design margins. Electrical differences affect gain linearity and saturation behavior at high V_CE.

What is the maximum allowable PCB copper area for thermal relief on the collector tab?

Infineon recommends ≥ 100 mm² of 2-oz copper connected directly to pin 2 (collector tab) with ≥ 4 thermal vias (0.3 mm diameter, filled) to inner ground plane. This achieves R_thJA ≈ 65 K/W in standard 4-layer board configurations per AN077.

Does BCV29E6327HTSA1 support pulsed operation beyond 500 mA?

Yes - peak collector current I_CM = 800 mA is rated for pulse widths ≤ 10 ms with duty cycle ≤ 2%. Derating curves in datasheet Figure 5 confirm permissible pulse load scaling down to 100 µs pulses at 1.2 A, provided average power remains within 1 W limit.

Can BCV29E6327HTSA1 be used in linear regulator pass transistor applications?

It is not recommended. While V_CE(sat) is low, the device lacks SOA (Safe Operating Area) characterization for linear mode, and its f_T and capacitance profile are optimized for switching, not analog regulation. Thermal runaway risk increases above V_CE > 5 V in unregulated configurations.