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

Infineon Technologies BCX5616H6433XTMA1

Name: BCX5616H6433XTMA1
Brand: Infineon Technologies
SKU: BCX5616H6433XTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX5616H6433XTMA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX5616H6433XTMA1.pdf

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

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Product details

Overview

BCX5616H6433XTMA1 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 V_CEO = 80 V, I_C = 1 A continuous, V_CE(sat) ≤ 0.5 V at I_C = 500 mA / I_B = 50 mA, h_FE = 100–250 (at I_C = 150 mA), and operates up to T_j = 150 °C in SOT-89 package.

For engineers reviewing the BCX5616H6433XTMA1 datasheet, BCX5616H6433XTMA1 pinout, BCX5616H6433XTMA1 application, or BCX5616H6433XTMA1 equivalent, key selection criteria include guaranteed h_FE range at high current, low saturation voltage under switching load, thermal resistance R_thJS ≤ 15 K/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This transistor is optimized for linear and switching operation in medium-power AF amplifier output stages, where stable DC current gain across temperature (25°C to 100°C) and low V_CE(sat) reduce conduction losses. Its complementary PNP counterpart is BCX52/BCX53 series.

The device supports pulsed operation up to I_CM = 1.5 A (t_p ≤ 10 ms, D < 2%), with thermal derating defined by P_tot = 2 W at T_S ≤ 120 °C and R_thJS ≤ 15 K/W enabling robust PCB-level heat dissipation in compact SOT-89 layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum collector-emitter voltage before breakdown; enables use in 48 V automotive supply rails with margin.
I_C	1 A continuous - Rated collector current defines usable linear/saturation region for driver-stage load handling.
V_CE(sat)	≤ 0.5 V at I_C = 500 mA / I_B = 50 mA - Low saturation voltage minimizes power loss and self-heating during switching.
h_FE	100–250 at I_C = 150 mA - Guaranteed DC current gain range ensures predictable base drive requirements across production lots.
f_T	100 MHz - Transition frequency confirms suitability for audio-band amplification without high-frequency instability.
R_thJS	≤ 15 K/W - Junction-to-soldering-point thermal resistance enables direct thermal coupling to copper pour on PCB for passive cooling.
T_j max	150 °C - Maximum junction temperature rating supports operation in under-hood automotive environments.

Pinout & Package

BCX5616H6433XTMA1 is housed in a surface-mount SOT-89 package with standardized 3-pin configuration and integrated heatsink tab (pin 2). The package meets RoHS requirements and is qualified per AEC-Q101 for automotive applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Reference node for bias network; connected to ground or emitter resistor in common-emitter configurations.
2 (Collector)	C	Main current output terminal; electrically and thermally coupled to heatsink tab for power dissipation.
3 (Base)	B	Control input for current amplification; requires current-limited drive to maintain h_FE linearity.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress test standard, including HTGB, HTRB, and temperature cycling.
Low V_CE(sat)	≤ 0.5 V at rated switching current reduces conduction loss and improves efficiency in Class AB output stages.
High h_FE consistency	100–250 range at 150 mA ensures stable gain matching across batches for differential pair designs.
SOT-89 thermal performance	R_thJS ≤ 15 K/W allows ≥1.5 W dissipation with minimal board area, eliminating need for external heatsinks.

Applications

Automotive Audio Amplifiers

Industrial Motor Driver Stages

Use Scenario: Final output stage in 20–50 W car radio amplifiers driving 4 Ω speakers.

IC Role / Device Role / Timing Role: NPN power switch in complementary push-pull topology delivering linear current amplification.

Use Value: V_CEO = 80 V provides headroom above 14 V nominal battery rail; low V_CE(sat) limits thermal rise at full output.

Use Scenario: High-side driver in 24 V DC motor control modules for HVAC actuators.

IC Role / Device Role / Timing Role: Medium-current switch controlling motor winding current via PWM-modulated base drive.

Use Value: I_C = 1 A and f_T = 100 MHz support clean 20 kHz PWM switching with minimal distortion.

LED Driver Circuits

Power Supply Pass Transistors

Use Scenario: Constant-current LED string driver in commercial lighting fixtures operating from 36 V DC bus.

IC Role / Device Role / Timing Role: Linear current regulator with emitter-follower configuration and sense-resistor feedback.

Use Value: Stable h_FE over temperature ensures consistent LED current regulation without active compensation.

Use Scenario: Series pass element in adjustable linear voltage regulators supplying 5 V/1 A to microcontroller subsystems.

IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output by dissipating excess input-output differential.

Use Value: R_thJS ≤ 15 K/W enables reliable 1.5 W dissipation at ambient 70 °C without forced air cooling.

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
BCX56-16TA (ON Semiconductor)	V_CEO = 80 V, h_FE = 100–250, but R_thJS = 18 K/W and not AEC-Q101 qualified.	Lacks automotive qualification; suitable only for industrial/commercial non-safety-critical use.	Select when cost sensitivity outweighs automotive compliance and thermal margin is acceptable.
MJD122G (ON Semiconductor)	Higher I_C = 3 A, V_CEO = 100 V, but larger TO-252 package and no AEC-Q101 certification.	Requires more PCB area and lacks automotive stress validation; better for higher-current non-automotive designs.	Choose when >1 A continuous current is required and board space permits larger footprint.

Compared with BCX56-16TA and MJD122G, BCX5616H6433XTMA1 uniquely combines AEC-Q101 qualification, SOT-89 thermal efficiency (R_thJS ≤ 15 K/W), and tightly binned h_FE, making it optimal for space-constrained, thermally demanding automotive audio and actuator drivers.

Availability

BCX5616H6433XTMA1 is available at Aetrix Electronics and suitable for automotive audio systems, industrial motor controllers, LED lighting drivers, and linear power supply designs requiring stable component supply and AEC-Q101 compliance.

Supply support for BCX5616H6433XTMA1 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.

BCX5616H6433XTMA1 belongs to Infineon's BCX family of AEC-Q101-qualified general-purpose transistors, engineered for reliable linear and switching operation in automotive and industrial power stages.

FAQ

Is BCX5616H6433XTMA1 pin-compatible with BCX56-16?

Yes - BCX5616H6433XTMA1 uses the same SOT-89 package with identical pin 1 (Emitter), pin 2 (Collector), and pin 3 (Base) assignment as BCX56-16. Mechanical and electrical pinout alignment is confirmed per Infineon's package outline EHP00449 and marking layout documentation.

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current is I_B = 100 mA per datasheet Section 2. IB = 50 mA is specified for V_CE(sat) testing, but sustained operation above 50 mA requires verification of thermal limits using R_thJS ≤ 15 K/W and T_j ≤ 150 °C constraints.

Does BCX5616H6433XTMA1 support pulsed operation beyond 1 A?

Yes - peak collector current I_CM = 1.5 A is rated for pulse widths ≤ 10 ms with duty cycle < 2%. Pulse capability is validated in Figure 6 of the datasheet and must be applied with appropriate thermal averaging to avoid junction overheating.

Can this transistor replace BCX54 or BCX55 in existing designs?

No - BCX5616H6433XTMA1 has V_CEO = 80 V and V_CBO = 100 V, exceeding BCX54 (45 V) and BCX55 (60 V). Substitution may cause overstress in circuits designed for lower-voltage transistors unless voltage margins are re-verified per application conditions.

BCX5616H6433XTMA1 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:: 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

BCX5616H6433XTMA1 FAQ

1.How can I place an order for BCX5616H6433XTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX5616H6433XTMA1 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 BCX5616H6433XTMA1 reliable?

The price and inventory of BCX5616H6433XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5616H6433XTMA1 is usually 5 days.

3.What payment methods are accepted for BCX5616H6433XTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5616H6433XTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX5616H6433XTMA1?

BCX5616H6433XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX5616H6433XTMA1 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 BCX5616H6433XTMA1?

For technical support, including BCX5616H6433XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5616H6433XTMA1 requirements.

6.How does Aetrix verify that BCX5616H6433XTMA1 is sourced from the original manufacturer or authorized distributors?

All BCX5616H6433XTMA1 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 BCX5616H6433XTMA1 meets industry standards.

7.What is the process for return or replacement of BCX5616H6433XTMA1?

All BCX5616H6433XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX5616H6433XTMA1, 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 BCX5616H6433XTMA1 part is unused and in its original packaging.

Return procedure for BCX5616H6433XTMA1:

1.Submit a request within 90 days.

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

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