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

Infineon Technologies BCX5416H6327XTSA1

Name: BCX5416H6327XTSA1
Brand: Infineon Technologies
SKU: BCX5416H6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX5416H6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX5416H6327XTSA1.pdf

Description:: TRANS NPN 45V 1A PG-SOT89

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Product details

Overview

BCX5416H6327XTSA1 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 a 45 V collector-emitter breakdown voltage (V_(BR)CEO), 1 A continuous collector current (I_C), 2 W total power dissipation at T_S ≤ 120°C, and low 0.5 V collector-emitter saturation voltage (V_CE(sat)) at I_C = 500 mA / I_B = 50 mA - enabling efficient amplification in automotive audio amplifiers and industrial power control modules.

For engineers reviewing the BCX5416H6327XTSA1 datasheet, BCX5416H6327XTSA1 pinout, BCX5416H6327XTSA1 application, or BCX5416H6327XTSA1 equivalent, key selection criteria include verified V_(BR)CEO = 45 V, h_FE = 100–250 at I_C = 500 mA, SOT89 package thermal resistance R_thJS ≤ 15 K/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This transistor operates as a medium-power NPN switch or linear amplifier with DC current gain (h_FE) specified across three test conditions: 25–100 at I_C = 5 mA/V_CE = 2 V; 63–160 at I_C = 150 mA/V_CE = 2 V; and 100–250 at I_C = 500 mA/V_CE = 2 V. Its transition frequency f_T is typ. 100 MHz at I_C = 50 mA/V_CE = 10 V, supporting stable AF signal handling up to ~10 MHz bandwidth.

Thermal design is enabled by its SOT89 package with junction-to-soldering-point thermal resistance ≤15 K/W, and permissible pulse load capability defined for duty cycles down to 0.005 at pulse widths ≥10 µs. The device meets AEC-Q101 stress testing requirements for automotive use, including temperature cycling and high-temperature operating life.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)CEO	45 V - maximum safe collector-emitter voltage before avalanche breakdown under open-base condition
I_C	1 A - continuous DC collector current rating at T_S ≤ 120°C, defining steady-state drive capability
V_CE(sat)	0.5 V max at I_C = 500 mA / I_B = 50 mA - ensures low conduction loss in saturated switching
h_FE	100–250 at I_C = 500 mA / V_CE = 2 V - supports predictable base drive sizing for high-current switching
f_T	100 MHz typ at I_C = 50 mA / V_CE = 10 V - enables stable small-signal amplification up to mid-AF range
R_thJS	≤15 K/W - allows direct thermal path modeling from junction to PCB solder point for heatsinkless designs
AEC-Q101	Qualified - validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.)

Pinout & Package

The BCX5416H6327XTSA1 is housed in a surface-mount SOT89 package with exposed emitter pad for thermal enhancement and mechanical stability. Pin 1 = Base (B), Pin 2 = Collector (C), Pin 3 = Emitter (E).

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input terminal	Receives base current to bias transistor into active/saturation; requires current-limiting resistor in series
2 (Collector)	High-side current output node	Connected to load supply rail; carries full collector current; thermally coupled to package tab
3 (Emitter)	Low-side return path	Common reference for base-emitter junction; electrically and thermally tied to PCB copper pour

Key Features

Feature	Design Value
Low V_CE(sat)	0.5 V max at I_C = 500 mA - reduces power loss and self-heating in switching mode
High h_FE consistency	100–250 range at I_C = 500 mA - enables robust base drive design without overdesign margin
AEC-Q101 qualification	Validated for automotive ambient temperatures (−40°C to +150°C) and lifetime reliability
SOT89 thermal performance	R_thJS ≤ 15 K/W - supports >1.5 W continuous dissipation on 25 mm² 2-oz copper without external heatsink
Pb-free & RoHS compliant	Meets EU Directive 2011/65/EU - suitable for lead-free reflow assembly and environmental compliance

Applications

Automotive Audio Amplifier Output Stage

Industrial DC Motor Driver

Use Scenario: Final push-pull stage in Class AB car radio amplifier delivering 5–10 W into 4 Ω speaker load.

IC Role / Device Role / Timing Role: NPN output switch providing current sourcing capability with matched PNP complement (BCX51–BCX53 series).

Use Value: Low 0.5 V V_CE(sat) minimizes heat generation at 500 mA peak current, extending thermal margin in sealed enclosures.

Use Scenario: H-bridge half-bridge leg driving 12 V/1 A brushed DC motor in HVAC actuator or seat positioner.

IC Role / Device Role / Timing Role: High-current NPN switch controlling motor direction and PWM speed modulation.

Use Value: 1 A I_C rating and AEC-Q101 qualification ensure reliable operation under 125°C under-hood temperature cycling.

LED Driver for Automotive Lighting

Power Supply Pass Transistor

Use Scenario: Constant-current LED string driver for interior dome lights or map lamps using linear regulation.

IC Role / Device Role / Timing Role: Linear pass element regulating current through 3–5 white LEDs in series.

Use Value: Stable h_FE across temperature enables precise current mirror implementation without feedback compensation.

Use Scenario: Adjustable linear regulator pass transistor in 5 V/1 A auxiliary power supply for infotainment MCU core rails.

IC Role / Device Role / Timing Role: Series pass element dissipating up to 1.5 W during dropout conditions.

Use Value: R_thJS ≤ 15 K/W allows direct mounting on 2-layer PCB with 500 mm² copper area, eliminating discrete heatsink.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX5416TA	Same electrical specs; SOT-23 package instead of SOT89; R_thJS ≈ 250 K/W vs. ≤15 K/W	Limited to <150 mW continuous dissipation; unsuitable for >200 mA linear operation	Select only for low-power signal switching where board space is critical and thermal load is minimal.
MMBT4401LT1G	Higher V_(BR)CEO = 40 V (vs. 45 V); lower h_FE = 100 min at I_C = 150 mA; SOT-23 package	Not AEC-Q101 qualified; rated for commercial temp range only (−55°C to +150°C, no automotive validation)	Acceptable for non-automotive consumer applications requiring cost-sensitive, general-purpose NPN switching.

Compared with BCX5416H6327XTSA1, BCX5416TA trades thermal performance for footprint reduction, while MMBT4401LT1G offers broader commercial availability but lacks automotive qualification and high-current linearity.

Availability

BCX5416H6327XTSA1 is available at Aetrix Electronics and suitable for automotive audio amplifiers, industrial motor drivers, and LED lighting systems requiring stable component supply with AEC-Q101 assurance and SOT89 thermal performance.

Supply support for BCX5416H6327XTSA1 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 legacy bipolar transistor product line engineered specifically for high-reliability audio-frequency power amplification and switching in automotive and industrial environments.

FAQ

Is BCX5416H6327XTSA1 pin-compatible with BCX54-16 or BCX5416TA?

No. BCX5416H6327XTSA1 uses SOT89 (3-pin, tab-connected to emitter), while BCX5416TA uses SOT-23 (3-pin, no thermal tab). Pin numbering differs: SOT89 assigns Base–Collector–Emitter to pins 1–2–3; SOT-23 uses Emitter–Base–Collector. Mechanical and thermal layouts are incompatible.

What is the maximum allowable case temperature (T_S) for continuous operation?

The datasheet specifies P_tot = 2 W at T_S ≤ 120°C. Exceeding 120°C case temperature violates the absolute maximum rating and risks permanent degradation. Derating is required above this point: at T_S = 130°C, maximum allowable P_tot drops to ~1.6 W per the P_tot vs. T_S curve.

Does BCX5416H6327XTSA1 support pulsed operation beyond 1 A?

Yes. Peak collector current I_CM is rated at 1.5 A for pulse widths ≤10 ms (duty cycle ≤2%). This enables short-duration surge handling in motor startup or LED strobe circuits, provided average power remains within 2 W and thermal mass prevents junction overheating.

Can BCX5416H6327XTSA1 be used as a direct replacement for BCX56-16 in a 80 V circuit?

No. BCX5416H6327XTSA1 has V_(BR)CEO = 45 V; BCX56-16 is rated for 80 V. Using BCX5416H6327XTSA1 in an 80 V application risks catastrophic breakdown during transients or supply overshoot. Voltage rating must not be exceeded - select BCX56-16 or higher-voltage alternatives like BCP56-16.

BCX5416H6327XTSA1 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):: 45 V

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

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 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

BCX5416H6327XTSA1 FAQ

1.How can I place an order for BCX5416H6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX5416H6327XTSA1 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 BCX5416H6327XTSA1 reliable?

The price and inventory of BCX5416H6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5416H6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BCX5416H6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5416H6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX5416H6327XTSA1?

BCX5416H6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX5416H6327XTSA1 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 BCX5416H6327XTSA1?

For technical support, including BCX5416H6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5416H6327XTSA1 requirements.

6.How does Aetrix verify that BCX5416H6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX5416H6327XTSA1 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 BCX5416H6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BCX5416H6327XTSA1?

All BCX5416H6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX5416H6327XTSA1, 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 BCX5416H6327XTSA1 part is unused and in its original packaging.

Return procedure for BCX5416H6327XTSA1:

1.Submit a request within 90 days.

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

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