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

Infineon Technologies BCX5116H6433XTMA1

Name: BCX5116H6433XTMA1
Brand: Infineon Technologies
SKU: BCX5116H6433XTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX5116H6433XTMA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX5116H6433XTMA1.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX5116H6433XTMA1 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio frequency driver and output stages in linear and switching applications. It features V_CEO = 45 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 SOT-89 surface-mount package. It is RoHS-compliant and AEC-Q101 qualified for automotive-grade reliability.

For engineers reviewing the BCX5116H6433XTMA1 datasheet, BCX5116H6433XTMA1 pinout, BCX5116H6433XTMA1 application, or BCX5116H6433XTMA1 equivalent, key selection criteria include DC current gain consistency at high collector current, low saturation voltage under 500 mA load, thermal resistance (R_thJS ≤ 15 K/W), and complementary NPN pairing with BCX54–BCX56 series.

Technical Context

This PNP BJT operates in active, saturation, and cutoff regions with specified breakdown limits: V_(BR)CEO = 45 V, V_(BR)CBO = 45 V, and V_(BR)EBO = 5 V. Its f_T = 125 MHz enables stable operation up to mid-VHF range in small-signal amplification.

Thermal design is supported by R_thJS ≤ 15 K/W and P_tot = 2 W at T_S ≤ 120 °C, with pulse capability up to I_CM = 1.5 A (t_p ≤ 10 ms). The device meets AEC-Q101 stress testing for automotive under-hood use.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage before avalanche in common-emitter configuration
I_C	1 A - Continuous DC collector current rating for sustained linear or switching operation
V_CE(sat)	≤ 0.5 V at I_C = 500 mA / I_B = 50 mA - Low conduction loss in saturated switch mode
h_FE	100–250 at I_C = 150 mA - Stable current amplification across production lot for predictable biasing
f_T	125 MHz - Enables reliable small-signal amplification up to ~100 MHz with adequate gain margin
R_thJS	≤ 15 K/W - Enables efficient heat transfer from junction to solder point on PCB copper pad
T_j max	150 °C - Junction temperature limit supporting operation in engine control units and power supplies

Pinout & Package

SOT-89 package: 3-pin, surface-mount, thermally enhanced plastic case with exposed emitter tab for improved heat dissipation. Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter (standard BCX51-series pinout per Infineon outline drawing).

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input	Receives base current to regulate collector current; requires external current-limiting resistor in most linear applications
2 (Collector)	Power output node	Connected to load or supply rail; carries full collector current and dissipates majority of power in saturation
3 (Emitter)	Reference terminal	Common return path; electrically tied to PCB thermal pad for direct thermal coupling to copper pour

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock
Low V_CE(sat)	Ensures <1.0 W conduction loss at 500 mA, reducing thermal load in compact power stages
High h_FE range	Supports stable bias networks without feedback compensation across manufacturing variance
Complementary NPN pairing	Direct match with BCX54–BCX56 series for push-pull amplifier and H-bridge designs
Pb-free & RoHS compliant	Meets global environmental regulations without compromising solderability or long-term reliability

Applications

Automotive Lighting Control

DC Motor Driver Stage

Use Scenario: Switching 12 V incandescent or LED headlamp loads in body control modules.

IC Role / Device Role / Timing Role: PNP high-side switch controlling current flow from battery to lamp load.

Use Value: V_CEO = 45 V provides 3× safety margin over 12 V automotive rail; low V_CE(sat) minimizes self-heating during PWM dimming.

Use Scenario: Driving unidirectional brushed DC motors in HVAC actuators or seat positioners.

IC Role / Device Role / Timing Role: Single-ended output stage delivering up to 1 A to motor winding.

Use Value: I_C = 1 A and P_tot = 2 W support continuous 10 W motor drive; AEC-Q101 ensures lifetime reliability in vibration-prone zones.

Audio Power Amplifier Output

Industrial Sensor Signal Conditioning

Use Scenario: Complementary Class-B output pair in low-power audio amplifiers (e.g., infotainment subwoofers).

IC Role / Device Role / Timing Role: PNP half of push-pull emitter-follower stage delivering current to speaker load.

Use Value: h_FE ≥ 100 at 150 mA ensures linear current delivery; f_T = 125 MHz preserves audio bandwidth up to 20 kHz with margin.

Use Scenario: Current-source biasing for precision temperature or pressure sensors in PLC analog input modules.

IC Role / Device Role / Timing Role: Constant-current source setting sensor excitation level with minimal drift.

Use Value: Tight h_FE distribution and low I_CBO (<0.1 µA at 150 °C) maintain accuracy across industrial temperature range (−40 to +125 °C).

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP BJT switching and amplification applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX51-16TA	Same electrical specs, identical SOT-89 package, but marked with "BCX51-16" and shipped in tape-and-reel (3000 pcs/reel) vs. 1000 pcs/reel	No functional difference; compatible in all PCB layouts and thermal designs	Select when standard reel size or alternate marking is required for traceability
MMBT5087LT1G	Lower V_CEO = 30 V, lower I_C = 0.5 A, SOT-23 package (higher R_thJA)	Not suitable for 45 V automotive loads or >500 mA continuous current; limited thermal performance	Only consider for space-constrained, low-power consumer applications where voltage/current margins are relaxed

Compared with BCX5116H6433XTMA1, BCX51-16TA offers identical performance in a different packaging format, while MMBT5087LT1G trades voltage/current capability and thermal robustness for smaller footprint-making it unsuitable for automotive or industrial power-stage roles.

Availability

BCX5116H6433XTMA1 is available at Aetrix Electronics and suitable for automotive lighting control, DC motor drivers, audio power amplifiers, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BCX5116H6433XTMA1 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.

BCX5116H6433XTMA1 belongs to Infineon's BCX51–BCX53 family of AEC-Q101-qualified PNP transistors, engineered for high-reliability linear and switching functions in automotive and industrial power stages.

FAQ

Is BCX5116H6433XTMA1 pin-compatible with BCX51-16TA?

Yes-both share identical SOT-89 pinout (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter), same thermal pad layout, and identical electrical specifications. The only differences are marking format and reel quantity (1000 vs. 3000 pieces), making them fully interchangeable on PCBs and in assembly lines.

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current is I_B = 100 mA (DC), with peak limit I_BM = 200 mA for pulses ≤10 ms. For reliable 1 A collector current, typical design uses I_B ≈ 50 mA (h_FE ≥ 20), ensuring saturation without overstressing the base-emitter junction.

Does BCX5116H6433XTMA1 require a heatsink in 2 W operation?

No external heatsink is required if mounted on ≥1 cm² of 2-oz copper with thermal vias. With R_thJS ≤ 15 K/W and ambient ≤ 70 °C, junction temperature stays below 150 °C at full 2 W dissipation-verified per Infineon AN077 thermal modeling guidelines for SOT-89 on standard FR4.

Can BCX5116H6433XTMA1 be used in complementary symmetry amplifier circuits?

Yes-it is explicitly designed as the PNP complement to BCX54–BCX56 NPN transistors. Matching h_FE ranges, V_CE(sat), and thermal characteristics enable balanced push-pull operation in Class-B and AB audio outputs without crossover distortion.

BCX5116H6433XTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Transistor Type:: PNP

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:: 125MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX5116H6433XTMA1 FAQ

1.How can I place an order for BCX5116H6433XTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX5116H6433XTMA1 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 BCX5116H6433XTMA1 reliable?

The price and inventory of BCX5116H6433XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5116H6433XTMA1 is usually 5 days.

3.What payment methods are accepted for BCX5116H6433XTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5116H6433XTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX5116H6433XTMA1?

BCX5116H6433XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX5116H6433XTMA1 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 BCX5116H6433XTMA1?

For technical support, including BCX5116H6433XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5116H6433XTMA1 requirements.

6.How does Aetrix verify that BCX5116H6433XTMA1 is sourced from the original manufacturer or authorized distributors?

All BCX5116H6433XTMA1 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 BCX5116H6433XTMA1 meets industry standards.

7.What is the process for return or replacement of BCX5116H6433XTMA1?

All BCX5116H6433XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX5116H6433XTMA1, 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 BCX5116H6433XTMA1 part is unused and in its original packaging.

Return procedure for BCX5116H6433XTMA1:

1.Submit a request within 90 days.

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

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