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

Infineon Technologies BCX56E6327HTSA1

Name: BCX56E6327HTSA1
Brand: Infineon Technologies
SKU: BCX56E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX56E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX56E6327HTSA1.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX56E6327HTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages in linear and switching applications. 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 use in low-to-mid-power amplifier and switching circuits.

For engineers reviewing the BCX56E6327HTSA1 datasheet, BCX56E6327HTSA1 pinout, BCX56E6327HTSA1 application, or BCX56E6327HTSA1 equivalent, key selection criteria include its SOT-89 package thermal performance (R_thJS ≤ 15 K/W), AEC-Q101 qualification for automotive environments, and complementary PNP pairing with BCX52/BCX53 series in push-pull configurations.

Technical Context

This NPN transistor operates in active, saturation, and cutoff regions with DC current gain (h_FE) ranging from 63 to 250 depending on collector current and bias conditions - specified at I_C = 150 mA (V_CE = 2 V) and extended to 250 at I_C = 500 mA for high-current switching support.

Its thermal design context includes a maximum junction temperature of 150 °C and total power dissipation of 2 W at T_S ≤ 120 °C, with pulse handling capability up to 1.5× I_CM (1.5 A) for t_p ≤ 10 ms - validated under AEC-Q101 stress testing for automotive-grade reliability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)CEO	80 V - supports rail voltages up to 60 V in linear amplifiers or 48 V DC-DC switchers without breakdown risk
I_C (continuous)	1 A - enables direct drive of small relays, LED arrays, or pre-driver stages without external buffering
V_CE(sat)	0.5 V @ I_C = 500 mA, I_B = 50 mA - limits conduction loss to ≤250 mW, reducing thermal load in Class-A/B output stages
f_T	100 MHz - sufficient for audio-band amplification (≤20 kHz) and low-speed digital switching (≤10 MHz clocked logic)
h_FE	63–250 - provides stable current amplification across 5 mA–500 mA range, supporting both small-signal biasing and power switching
R_thJS	≤15 K/W - allows 2 W dissipation with ≤30 K rise from solder point, compatible with minimal copper pour on PCB

Pinout & Package

BCX56E6327HTSA1 is housed in a surface-mount SOT-89 package with standardized 3-pin layout and exposed emitter pad for thermal conduction. The package meets RoHS requirements and is qualified per AEC-Q101 for automotive under-hood use.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input	Receives base current to regulate collector-emitter conduction; requires current-limiting resistor in series for safe biasing
2 (Collector)	Power output node	Connected to load or supply rail; carries full collector current and dissipates majority of heat in saturation
3 (Emitter)	Reference terminal	Common return path; tied to ground or negative rail; electrically and thermally connected to exposed metal tab

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive ambient temperatures (−50 °C to +150 °C) and humidity, vibration, and ESD stress
Low V_CE(sat)	0.5 V at rated I_C/I_B reduces power loss by >40% vs. legacy general-purpose transistors like BC337
Complementary PNP pairing	Direct match with BCX52 (60 V) and BCX53 (80 V) for symmetrical push-pull output stages
SOT-89 thermal performance	R_thJS ≤15 K/W enables 2 W operation with minimal heatsinking - suitable for space-constrained modules

Applications

Automotive Door Module Driver

Industrial Relay Interface

Use Scenario: Driving window lift motor control logic in door ECUs with 12 V battery supply and PWM modulation.

IC Role / Device Role / Timing Role: NPN switch controlling relay coil or MOSFET gate in H-bridge half-bridge stage.

Use Value: 80 V V_(BR)CEO prevents breakdown during load-dump transients; 0.5 V V_CE(sat) minimizes self-heating during 500 ms stall events.

Use Scenario: Isolating PLC output signals to activate 24 V industrial solenoids and contactors.

IC Role / Device Role / Timing Role: Level-shifting and current-amplifying interface between microcontroller GPIO and inductive load.

Use Value: 1 A I_C rating supports direct drive of 500 mA coils; h_FE ≥63 ensures reliable turn-on with ≤10 mA MCU output current.

Audio Power Amplifier Pre-Driver

DC-DC Converter Switch

Use Scenario: Biasing output stage in Class-AB headphone amplifier with ±15 V rails and <1 % THD requirement.

IC Role / Device Role / Timing Role: Medium-power driver transistor delivering base current to complementary output pair.

Use Value: f_T = 100 MHz ensures flat gain response up to 50 kHz; low V_BE(ON) improves thermal tracking in differential pairs.

Use Scenario: Low-side switch in 48 V buck converter for telecom power supplies operating at 250 kHz.

IC Role / Device Role / Timing Role: Pulse-width modulated switching element in non-synchronous topology.

Use Value: 1.5 A peak current (I_CM) accommodates startup surges; R_thJS ≤15 K/W sustains 2 W dissipation at 100 kHz duty cycle.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX56-16	Same die, identical electrical specs; differs only in h_FE binning (160–250 vs. 63–250 for E6327HTSA1)	Higher guaranteed h_FE enables lower base drive current in fixed-bias designs	Select when precise current gain stability is required over wide temperature range
MJD112G	TO-252 package, higher I_C (2 A), higher V_(BR)CEO (100 V), but lower f_T (30 MHz)	Better for high-current, low-frequency switching; unsuitable for audio-band linearity-critical roles	Choose for industrial motor control where thermal mass matters more than bandwidth

Compared with BCX56-16, the E6327HTSA1 offers broader h_FE tolerance for cost-sensitive designs; versus MJD112G, it trades current capacity for superior RF performance and smaller footprint - ideal for compact automotive modules.

Availability

BCX56E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial relay interfaces, and audio pre-driver circuits requiring stable component supply and AEC-Q101 compliance.

Supply support for BCX56E6327HTSA1 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.

The BCX54–BCX56 series belongs to Infineon's automotive-qualified general-purpose transistor product line, engineered for robustness in harsh environments and compatibility with legacy through-hole and SMT assembly processes.

FAQ

Is BCX56E6327HTSA1 pin-compatible with BCX54 or BCX55?

Yes - all BCX54/55/56 variants share identical SOT-89 pinout (B-C-E) and mechanical footprint. However, voltage ratings differ: BCX54 is 45 V, BCX55 is 60 V, and BCX56 is 80 V. Substitution requires verification of V_(BR)CEO margin against system rail voltage and transients.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is 100 mA per datasheet. For reliable long-term operation, keep I_B ≤ 50 mA at T_A ≤ 85 °C. At I_C = 500 mA, the recommended I_B is 50 mA to ensure deep saturation and minimize V_CE(sat) drift.

Does BCX56E6327HTSA1 require a heatsink in 2 W operation?

No external heatsink is required if the PCB provides ≥1 cm² of 2-oz copper connected to the emitter tab. With R_thJS ≤15 K/W and 2 W dissipation, junction-to-solder-point rise is ≤30 K - well within the 150 °C T_j limit when board temperature stays below 120 °C.

Can BCX56E6327HTSA1 be used in linear regulator pass transistor applications?

It can serve as a pass element in low-dropout linear regulators up to ~1 A load, provided V_IN − V_OUT ≤ 5 V and power dissipation remains ≤2 W. Its low V_CE(sat) and stable h_FE support predictable dropout and thermal foldback, but SOA limitations must be checked for transient overload conditions.

BCX56E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX56E6327HTSA1 FAQ

1.How can I place an order for BCX56E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX56E6327HTSA1 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 BCX56E6327HTSA1 reliable?

The price and inventory of BCX56E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BCX56E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX56E6327HTSA1?

BCX56E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX56E6327HTSA1 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 BCX56E6327HTSA1?

For technical support, including BCX56E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56E6327HTSA1 requirements.

6.How does Aetrix verify that BCX56E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX56E6327HTSA1 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 BCX56E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BCX56E6327HTSA1?

All BCX56E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX56E6327HTSA1, 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 BCX56E6327HTSA1 part is unused and in its original packaging.

Return procedure for BCX56E6327HTSA1:

1.Submit a request within 90 days.

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

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