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

Infineon Technologies BC817K16E6433HTMA1

Name: BC817K16E6433HTMA1
Brand: Infineon Technologies
SKU: BC817K16E6433HTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC817K16E6433HTMA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BC817K16E6433HTMA1.pdf

Description:: TRANS NPN 45V 0.5A PG-SOT23

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Product details

Overview

BC817K16E6433HTMA1 from Nexperia is an NPN silicon general-purpose audio-frequency transistor in SOT-23 package, rated for 45 V V_CEO, 500 mA I_C, and 100–160 h_FE (Group 16) at 100 mA/1 V. It delivers low 0.7 V V_CE(sat) at 500 mA/50 mA drive and operates up to 150 °C junction temperature. Used in discrete amplifier stages, load switching, and level translation in automotive body control modules.

For engineers reviewing the BC817K16E6433HTMA1 datasheet, BC817K16E6433HTMA1 pinout, BC817K16E6433HTMA1 application, or BC817K16E6433HTMA1 equivalent, key selection criteria include verified h_FE group consistency, thermal resistance (R_thJS ≤ 70 K/W), AEC-Q101 qualification, and SOT-23 pin compatibility with standard PCB footprints.

Technical Context

This NPN bipolar junction transistor is optimized for linear and switching operation in ambient temperatures up to 150 °C. Its design supports stable DC current gain across IC = 10 mA–500 mA and maintains V_CE(sat) ≤ 0.7 V under high-current saturation conditions.

The device features a Pb-free, RoHS-compliant SOT-23 package with defined thermal path to soldering point (R_thJS ≤ 70 K/W). Electrical behavior is characterized per JEDEC JESD22-A108 and qualified to AEC-Q101 for automotive reliability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin.
I_C	500 mA continuous - Supports medium-power switching and amplification without derating below 115 °C case temperature.
h_FE (Group 16)	100–160 at 100 mA/1 V - Ensures predictable base drive requirements in linear gain stages and saturated switches.
V_CE(sat)	≤ 0.7 V at I_C = 500 mA, I_B = 50 mA - Minimizes conduction loss and self-heating in high-duty-cycle switching.
f_T	170 MHz typical - Supports audio-band amplification and fast digital signal conditioning up to ~10 MHz square waves.
R_thJS	≤ 70 K/W - Enables direct thermal modeling from junction to solder point for board-level thermal design.

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and JEDEC MO-203-AB compliant outline.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink node; connects to ground or low-side reference; defines polarity and bias direction.
2 (Base)	B	Control input; requires current-limited drive (max 100 mA DC) to ensure safe h_FE-based operation.
3 (Collector)	C	Current source node; handles switched load or active load; routed to higher potential rail or pull-up.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control, lighting, and body electronics per stress test requirements.
Low V_CE(sat)	0.7 V max at full rated current ensures <150 mW conduction loss, reducing thermal load on adjacent components.
High h_FE consistency	Group 16 binning (100–160) enables predictable base resistor sizing without design margin inflation.
Pb-free / RoHS compliant	Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles (peak 260 °C).

Applications

Automotive Door Module Switching

Industrial Sensor Signal Conditioning

Use Scenario: Driving window lift motor relays and LED status indicators in door control units.

IC Role / Device Role / Timing Role: NPN switch controlling 12 V loads with microcontroller GPIO-level base drive.

Use Value: Low V_CE(sat) minimizes power dissipation during extended duty cycles; AEC-Q101 rating ensures field reliability.

Use Scenario: Amplifying low-level analog outputs from pressure or temperature sensors before ADC sampling.

IC Role / Device Role / Timing Role: Discrete common-emitter amplifier stage providing 20–30 dB voltage gain.

Use Value: Stable h_FE over temperature enables consistent gain calibration; f_T > 100 MHz supports wideband sensor response.

Consumer Audio Pre-amplifier Stage

Power Supply Enable Circuitry

Use Scenario: First-stage gain block in battery-powered portable audio devices.

IC Role / Device Role / Timing Role: Linear NPN amplifier biased in Class-A for low-noise signal amplification.

Use Value: Low C_cb (3 pF) and C_eb (40 pF) preserve high-frequency fidelity; SOT-23 footprint saves board space.

Use Scenario: Enabling/disabling secondary DC-DC converter rails via MCU-controlled enable logic.

IC Role / Device Role / Timing Role: High-side or low-side enable switch translating 3.3 V logic to 5–24 V rail control.

Use Value: 500 mA I_C rating supports >100 mA enable currents; V_CEO = 45 V accommodates industrial 36 V nominal supplies.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC817-16,115 (Nexperia)	Same die, identical h_FE group and ratings; differs only in tape-and-reel packaging (EIA-481-D vs E6433HTMA1's EIA-481-E).	No functional difference; suitable for same PCB layout and thermal design.	Select when standard reel size or distributor stock alignment is prioritized.
MMBT3904LT1G (onsemi)	Lower V_CEO (40 V), lower h_FE min (100), same SOT-23 package; not AEC-Q101 qualified.	Limited to non-automotive industrial or consumer use due to qualification gap.	Choose for cost-sensitive non-automotive designs where AEC-Q101 is not required.

Compared with BC817K16E6433HTMA1, BC817-16,115 offers identical electrical performance with alternate packaging, while MMBT3904LT1G trades AEC-Q101 compliance and 45 V margin for broader commercial availability-making it viable only where automotive qualification is unnecessary.

Availability

BC817K16E6433HTMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer audio pre-amplifiers requiring stable component supply and AEC-Q101 assurance.

Supply support for BC817K16E6433HTMA1 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The BC817K series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, designed specifically for robust switching and amplification in harsh-environment automotive and industrial control systems.

FAQ

Is BC817K16E6433HTMA1 pin-compatible with BC817-16,115?

Yes, both parts share identical SOT-23 pinout (Emitter-Base-Collector on pins 1-2-3) and mechanical footprint. The only difference is tape-and-reel packaging format (E6433HTMA1 uses EIA-481-E, 115 uses EIA-481-D), which does not affect PCB layout or electrical interface.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is 100 mA, per the datasheet's "Maximum Ratings" table. For reliable long-term operation, base current should be limited to ≤50 mA at 25 °C ambient, with proportional derating above 115 °C case temperature to avoid bond wire overheating.

Does this transistor support pulsed operation beyond its DC ratings?

Yes - pulse operation up to 1000 mA peak collector current (I_CM) is permitted with duty cycle ≤2% and pulse width <300 µs, as specified in the "Maximum Ratings" table. Thermal limits still apply, and R_thJS must be used to verify junction temperature rise during pulses.

Can BC817K16E6433HTMA1 replace BC817-25 or BC817-40 in existing designs?

No - BC817K16E6433HTMA1 is binned to h_FE Group 16 (100–160), whereas BC817-25 and BC817-40 have higher minimum gains (250 and 400 respectively). Substitution may cause insufficient drive in circuits relying on higher h_FE, especially at elevated temperature or low V_CE.

BC817K16E6433HTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 700mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 100mA, 1V

Power - Max:: 500 mW

Frequency - Transition:: 170MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BC817K16E6433HTMA1 FAQ

1.How can I place an order for BC817K16E6433HTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC817K16E6433HTMA1 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 BC817K16E6433HTMA1 reliable?

The price and inventory of BC817K16E6433HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817K16E6433HTMA1 is usually 5 days.

3.What payment methods are accepted for BC817K16E6433HTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817K16E6433HTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC817K16E6433HTMA1?

BC817K16E6433HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC817K16E6433HTMA1 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 BC817K16E6433HTMA1?

For technical support, including BC817K16E6433HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817K16E6433HTMA1 requirements.

6.How does Aetrix verify that BC817K16E6433HTMA1 is sourced from the original manufacturer or authorized distributors?

All BC817K16E6433HTMA1 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 BC817K16E6433HTMA1 meets industry standards.

7.What is the process for return or replacement of BC817K16E6433HTMA1?

All BC817K16E6433HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC817K16E6433HTMA1, 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 BC817K16E6433HTMA1 part is unused and in its original packaging.

Return procedure for BC817K16E6433HTMA1:

1.Submit a request within 90 days.

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

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