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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Infineon Technologies BCX56H6327XTSA1

Name: BCX56H6327XTSA1
Brand: Infineon Technologies
SKU: BCX56H6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX56H6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX56H6327XTSA1.pdf

Description:: TRANS NPN 80V 1A PG-SOT89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX56H6327XTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages in automotive and industrial power amplifiers. It features 80 V collector-emitter breakdown voltage (V_(BR)CEO), 1 A continuous collector current (I_C), 0.5 V collector-emitter saturation voltage at I_C = 500 mA / I_B = 50 mA, and a transition frequency (f_T) of 100 MHz - enabling reliable linear amplification and switching in low-to-medium power analog circuits.

For engineers reviewing the BCX56H6327XTSA1 datasheet, BCX56H6327XTSA1 pinout, BCX56H6327XTSA1 application, or BCX56H6327XTSA1 equivalent, key selection criteria include its SOT-89 package thermal performance (R_thJS ≤ 15 K/W), AEC-Q101 qualification for automotive use, complementary PNP pairing with BCX52/BCX53, and verified DC current gain (h_FE = 63–250) across I_C = 5 mA to 500 mA at V_CE = 2 V.

Technical Context

This transistor operates as a medium-power NPN BJT optimized for linear amplification and saturated switching in analog signal chains. Its design supports stable DC biasing with h_FE min. 63 at I_C = 150 mA and typ. 100 at I_C = 500 mA, while maintaining low V_CE(sat) (≤0.5 V) under high-current drive conditions.

The device meets AEC-Q101 stress testing requirements for automotive electronics and uses a Pb-free SOT-89 package with exposed emitter pad for enhanced thermal dissipation. Junction temperature is rated to 150 °C, and total power dissipation is 2 W at T_S ≤ 120 °C - confirming suitability for thermally constrained PCB layouts in engine control modules and body electronics.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)CEO	80 V - supports rail voltages up to ±36 V in Class-AB amplifier outputs without breakdown
I_C (continuous)	1 A - enables direct drive of small speakers, relays, or LED arrays without external buffering
V_CE(sat)	0.5 V max at I_C = 500 mA / I_B = 50 mA - minimizes conduction loss and self-heating in saturated switch mode
h_FE	63–250 - provides predictable DC bias stability across production lots and temperature (−50 °C to +100 °C)
f_T	100 MHz - ensures usable gain at audio harmonics up to 20 kHz with margin for transient response
R_thJS	≤15 K/W - allows 2 W power dissipation with <15 K junction-to-solder-point rise, critical for compact SOT-89 mounting

Pinout & Package

BCX56H6327XTSA1 is housed in a surface-mount SOT-89 package with three terminals: Pin 1 = Base (B), Pin 2 = Collector (C), Pin 3 = Emitter (E). The exposed emitter pad serves as primary thermal path to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input	Receives base current to regulate collector current; requires series resistor for stable biasing in linear operation
2 (Collector)	Power output node	Connected to load (e.g., speaker coil or relay coil); must be decoupled from supply rail with local ceramic capacitor
3 (Emitter)	Current return path & thermal interface	Directly soldered to large copper pour for heat sinking; often tied to ground or negative rail in common-emitter configuration

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood applications including engine control units and lighting drivers
Low V_CE(sat)	0.5 V max ensures <0.25 W conduction loss at 500 mA, reducing thermal stress in sealed enclosures
High h_FE consistency	Min. 63 at 150 mA enables single-stage gain ≥20 dB in audio pre-driver stages without feedback compensation
Pb-free RoHS-compliant	Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles (peak 260 °C)

Applications

Automotive Audio Amplifier Output Stage

Industrial Relay Driver Circuit

Use Scenario: Final output stage in 5–10 W mono audio amplifier for vehicle infotainment head units.

IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology delivering amplified current to 4 Ω speaker load.

Use Value: 80 V V_(BR)CEO headroom prevents clipping-induced breakdown during transients; 0.5 V V_CE(sat) limits idle dissipation to <0.1 W at quiescent bias.

Use Scenario: Driving 12 V/24 V electromagnetic relay coils in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: Saturated switch controlling relay coil current up to 800 mA with fast turn-on/turn-off.

Use Value: 100 MHz f_T ensures clean switching edges (<100 ns rise/fall) even with inductive kickback suppression diodes.

DC Motor Speed Control (Low-Power)

Linear Voltage Regulator Pass Element

Use Scenario: PWM-driven H-bridge half-bridge leg for bidirectional control of 6–12 V brushed DC motors in automotive seat/mirror actuators.

IC Role / Device Role / Timing Role: High-side or low-side switching element handling peak currents up to 1.5 A (10 ms pulses).

Use Value: I_CM = 1.5 A and R_thJS ≤ 15 K/W allow safe operation under short-duration PWM overloads without thermal runaway.

Use Scenario: Series pass transistor in adjustable 3–12 V linear regulator supplying analog sensor circuitry in engine management systems.

IC Role / Device Role / Timing Role: Current-controlled variable resistor dissipating up to 1.8 W between input and output rails.

Use Value: 2 W P_tot rating and 150 °C T_j limit enable stable regulation under worst-case dropout (≥5 V) and ambient (125 °C) conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX56-16H6327XTSA1	Same die, but binned for h_FE = 100–250 (vs. standard BCX56's 63–250); tighter gain distribution	Preferred where precise DC bias stability required (e.g., differential pair tail current sources)	Select when h_FE matching or reduced gain variation across temperature is critical
MJD112T4G	TO-252 package; higher I_C = 2 A, V_(BR)CEO = 100 V, but lower f_T = 30 MHz and no AEC-Q101 qualification	Suitable for non-automotive industrial motor drives requiring higher current, not audio linearity	Choose only if board space allows TO-252 and automotive qualification is unnecessary

Compared with BCX56H6327XTSA1, the BCX56-16 variant offers improved h_FE consistency for precision biasing, while MJD112T4G trades automotive compliance and RF capability for higher current and voltage headroom in cost-sensitive industrial designs.

Availability

BCX56H6327XTSA1 is available at Aetrix Electronics and suitable for automotive audio amplifiers, industrial relay drivers, DC motor controllers, and linear voltage regulators requiring stable component supply with AEC-Q101 assurance and SOT-89 thermal performance.

Supply support for BCX56H6327XTSA1 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 and discrete devices.

BCX56H6327XTSA1 belongs to Infineon's BCX5x family of AEC-Q101-qualified general-purpose NPN transistors, engineered for robustness and thermal reliability in automotive signal conditioning and power interface applications.

FAQ

Is BCX56H6327XTSA1 pin-compatible with BCX54 or BCX55?

Yes - all BCX54/55/56 variants share identical SOT-89 pinout (B-C-E) and mechanical footprint. However, maximum ratings differ: BCX54 is rated for 45 V V_(BR)CEO and 45 V V_(BR)CBO, while BCX56 supports 80 V and 100 V respectively. Substitution requires verification of voltage stress margins in the target circuit.

What is the recommended PCB layout for thermal management?

Use a minimum 10 mm² copper pour connected directly to Pin 3 (Emitter) with ≥4 thermal vias (0.3 mm diameter) to inner ground plane. Keep traces to Pins 1 and 2 short and wide; avoid routing high-speed signals near the emitter pad to prevent coupling into the base node.

Does BCX56H6327XTSA1 support pulsed operation beyond 1 A?

Yes - peak collector current I_CM is specified at 1.5 A for pulse widths ≤10 ms with duty cycle ≤2%. Derating follows the permissible pulse load curve in the datasheet; at t_p = 1 ms, maximum allowable current rises to ~2.2 A with D = 0.01.

Can BCX56H6327XTSA1 be used in complementary symmetry amplifier designs?

Yes - it is explicitly paired with PNP types BCX51 (45 V), BCX52 (60 V), and BCX53 (80 V). Matching h_FE ranges and thermal coefficients between BCX56 and BCX53 enable balanced push-pull operation in Class-B/AB output stages without significant crossover distortion.

BCX56H6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 40 @ 150mA, 2V

Power - Max:: 2 W

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX56H6327XTSA1 FAQ

1.How can I place an order for BCX56H6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX56H6327XTSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BCX56H6327XTSA1 reliable?

The price and inventory of BCX56H6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56H6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BCX56H6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56H6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX56H6327XTSA1?

BCX56H6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX56H6327XTSA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BCX56H6327XTSA1?

For technical support, including BCX56H6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56H6327XTSA1 requirements.

6.How does Aetrix verify that BCX56H6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX56H6327XTSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BCX56H6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BCX56H6327XTSA1?

All BCX56H6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX56H6327XTSA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BCX56H6327XTSA1 part is unused and in its original packaging.

Return procedure for BCX56H6327XTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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