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

Infineon Technologies BCX53E6327HTSA1

Name: BCX53E6327HTSA1
Brand: Infineon Technologies
SKU: BCX53E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX53E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX53E6327HTSA1.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX53E6327HTSA1 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio-frequency driver and output stages. It features V_CEO = 80 V, I_C = 1 A continuous collector current, V_CE(sat) ≤ 0.5 V at I_C = 500 mA / I_B = 50 mA, h_FE = 63–250 (depending on operating point), and SOT-89 surface-mount package - used in linear power amplifiers and relay drivers requiring low saturation voltage and high current gain.

For engineers reviewing the BCX53E6327HTSA1 datasheet, BCX53E6327HTSA1 pinout, BCX53E6327HTSA1 application, or BCX53E6327HTSA1 equivalent, key selection criteria include guaranteed V_CEO rating, DC current gain at high I_C, thermal resistance (R_thJS ≤ 15 K/W), and complementary NPN pairing with BCX56 series for push-pull configurations.

Technical Context

This PNP BJT operates in linear and switching modes with specified DC characteristics at T_A = 25°C and extended thermal limits up to T_j = 150°C. Its f_T = 125 MHz enables stable operation in AF amplifier feedback loops and moderate-speed switching applications up to ~100 kHz.

The device uses epitaxial planar technology with Pb-free (RoHS-compliant) SOT-89 packaging. Pin configuration is fixed: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter - validated per Infineon's official package outline and marking layout documentation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - supports rail voltages up to ±40 V in Class-A/B amplifier outputs without breakdown
I_C (cont.)	1 A - delivers sufficient drive current for medium-power loads like solenoids or small relays
V_CE(sat)	≤ 0.5 V @ I_C = 500 mA / I_B = 50 mA - minimizes conduction loss and self-heating in saturated-switching use
h_FE	63–250 - provides stable current amplification across 5 mA–500 mA range, enabling predictable bias design
f_T	125 MHz - ensures adequate gain margin for audio-band feedback stability and transient response
R_thJS	≤ 15 K/W - allows direct PCB copper pour heatsinking for 2 W dissipation at T_S ≤ 120°C
P_tot	2 W @ T_S ≤ 120°C - defines maximum steady-state power handling under controlled board thermal conditions

Pinout & Package

SOT-89 package: 3-pin, single-ended surface-mount plastic case with exposed collector tab for thermal conduction. Dimensions: 4.5 × 2.5 × 1.5 mm (L × W × H), standard tape-and-reel packaging (1,000 pcs/reel, ø180 mm).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Base	Control input for forward-biased junction; requires current-limited drive to achieve target h_FE-based I_C
Pin 2	Collector	Main current sink terminal; electrically and thermally connected to exposed metal tab for heatsinking
Pin 3	Emitter	Current source reference node; tied to system ground or negative rail in common-emitter configurations

Key Features

Feature	Design Value
High V_CEO rating	80 V enables use in 48 V industrial control rails and automotive auxiliary circuits without derating
Low V_CE(sat)	≤ 0.5 V reduces power loss by >30% vs. legacy PNP transistors at 500 mA load
Complementary NPN pairing	Matched performance with BCX56 series simplifies push-pull stage design and thermal tracking
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTOL, and ESD robustness
RoHS-compliant packaging	Pb-free SOT-89 meets global environmental compliance without solderability or thermal performance trade-offs

Applications

Audio Power Amplifier Stages

Industrial Relay Drivers

Use Scenario: Final output stage in Class-AB audio amplifiers delivering 0.5–2 W into 4–8 Ω loads.

IC Role / Device Role / Timing Role: PNP emitter-follower configured as current booster, sourcing peak current during positive half-cycles.

Use Value: Low V_CE(sat) preserves headroom and reduces thermal stress; h_FE consistency ensures predictable bias current across production units.

Use Scenario: Driving 12–24 VDC electromagnetic relays in PLC I/O modules and motor control panels.

IC Role / Device Role / Timing Role: High-current saturated switch controlling relay coil current up to 800 mA.

Use Value: Guaranteed I_C = 1 A and fast turn-off (f_T-supported) prevent contact chatter and extend relay mechanical life.

Automotive Body Control Units

Linear Voltage Regulator Pass Elements

Use Scenario: Load switching for interior lighting, HVAC actuators, and window lift motors in 12 V vehicle systems.

IC Role / Device Role / Timing Role: PNP high-side switch with base resistor network, managing loads up to 750 mA.

Use Value: AEC-Q101 qualification ensures operation over –40°C to +125°C ambient; V_CEO = 80 V accommodates load-dump transients.

Use Scenario: Series pass element in adjustable 3-terminal linear regulators supplying analog sensor rails.

IC Role / Device Role / Timing Role: Current-amplifying element between error amplifier output and regulated output node.

Use Value: High h_FE (≥100 at 150 mA) reduces base drive burden on op-amp; R_thJS ≤ 15 K/W supports stable thermal regulation under 1.5 W dissipation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX53-16	Same die, higher h_FE bin (160–250 vs. 63–250); identical V_CEO, I_C, package	Preferred where tighter h_FE tolerance needed for precision bias networks	Select when consistent DC gain across temperature is critical; otherwise BCX53E6327HTSA1 offers broader h_FE coverage for general-purpose use
MJD2955G	TO-252 package, higher I_C = 10 A, lower f_T = 3 MHz, V_CEO = 60 V	Used in higher-power linear regulators and motor drivers where thermal mass matters more than speed	Choose for >2 W continuous dissipation; avoid if SOT-89 footprint or 80 V rating is required

Compared with BCX53-16, BCX53E6327HTSA1 offers wider h_FE distribution suitable for cost-sensitive designs, while MJD2955G trades compactness and voltage headroom for raw power handling - making each optimal for distinct thermal, layout, and gain-stability priorities.

Availability

BCX53E6327HTSA1 is available at Aetrix Electronics and suitable for audio amplifier stages, industrial relay drivers, and automotive body control units requiring stable component supply, RoHS compliance, and AEC-Q101 reliability assurance.

Supply support for BCX53E6327HTSA1 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 BCX53 series belongs to Infineon's general-purpose bipolar transistor product line, engineered for reliable linear and switching operation in cost-sensitive, thermally constrained applications across automotive, industrial, and consumer segments.

FAQ

Is BCX53E6327HTSA1 pin-compatible with BCX53-10 or BCX53-16?

Yes - all BCX53 variants (including -10, -16, and E6327HTSA1) share identical SOT-89 pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter. Mechanical and electrical compatibility is confirmed by Infineon's package outline documentation and marking layout diagrams.

What is the maximum allowable junction temperature during pulsed operation?

The absolute maximum junction temperature remains 150°C regardless of pulse duration. For pulsed I_C, duty cycle and peak current must be limited per the permissible pulse load curves in Infineon's Application Note AN077, ensuring average power stays within P_tot = 2 W at T_S ≤ 120°C.

Does BCX53E6327HTSA1 require a heatsink in typical 1 A switching applications?

Not necessarily - with R_thJS ≤ 15 K/W and proper PCB copper area (≥ 250 mm² 2 oz Cu connected to Pin 2), it can dissipate 2 W at T_S = 120°C. For sustained 1 A at V_CE > 0.4 V, however, thermal simulation or measurement is recommended to verify T_j < 150°C.

Can BCX53E6327HTSA1 be used as a direct replacement for BCX51 or BCX52 in existing designs?

No - BCX53 has higher V_CEO (80 V) and V_CBO (100 V) than BCX51 (45 V) and BCX52 (60 V). Substituting it into circuits designed for lower-voltage types may cause unintended overdesign or mismatched gain/saturation behavior; always verify bias network and voltage margin compatibility first.

BCX53E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

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:: 125MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX53E6327HTSA1 FAQ

1.How can I place an order for BCX53E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX53E6327HTSA1 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 BCX53E6327HTSA1 reliable?

The price and inventory of BCX53E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX53E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BCX53E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX53E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX53E6327HTSA1?

BCX53E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX53E6327HTSA1 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 BCX53E6327HTSA1?

For technical support, including BCX53E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX53E6327HTSA1 requirements.

6.How does Aetrix verify that BCX53E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX53E6327HTSA1 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 BCX53E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BCX53E6327HTSA1?

All BCX53E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX53E6327HTSA1, 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 BCX53E6327HTSA1 part is unused and in its original packaging.

Return procedure for BCX53E6327HTSA1:

1.Submit a request within 90 days.

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

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