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

Infineon Technologies BC817K16E6327HTSA1

Name: BC817K16E6327HTSA1
Brand: Infineon Technologies
SKU: BC817K16E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC817K16E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BC817K16E6327HTSA1.pdf

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

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Product details

Overview

BC817K16E6327HTSA1 from Infineon Technologies 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), with low 0.7 V V_CE(sat) at 500 mA/50 mA drive-used in discrete switching and linear amplification stages of automotive body control modules and industrial sensor interface circuits.

For engineers reviewing the BC817K16E6327HTSA1 datasheet, BC817K16E6327HTSA1 pinout, BC817K16E6327HTSA1 application, or BC817K16E6327HTSA1 equivalent, key selection criteria include verified AEC-Q101 qualification, guaranteed h_FE group binning, thermal resistance ≤70 K/W (junction-to-soldering point), and RoHS-compliant SOT-23 leadframe construction.

Technical Context

This transistor operates as a single-element NPN bipolar junction device optimized for DC-coupled switching and analog amplification below 100 MHz. Its design emphasizes stable current gain across temperature (−40 °C to 105 °C) and low saturation voltage under high-current drive conditions.

It features a planar epitaxial structure with emitter ballasting, enabling robust secondary breakdown immunity and predictable f_T = 170 MHz at 50 mA/5 V. The device is not intended for RF power amplification or high-speed digital switching above 10 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before avalanche breakdown under open-base condition; defines safe operating voltage headroom in 24 V automotive load switches.
I_C	500 mA continuous - Rated collector current at T_S ≤ 115 °C; supports relay drivers and LED matrix row/column sinks without forced cooling.
h_FE (Group 16)	100–160 at I_C = 100 mA, V_CE = 1 V - Tight DC current gain bin ensures consistent base drive requirements across production batches.
V_CE(sat)	≤ 0.7 V at I_C = 500 mA, I_B = 50 mA - Low saturation voltage minimizes conduction loss and self-heating in high-duty-cycle switching applications.
f_T	170 MHz typical at I_C = 50 mA, V_CE = 5 V - Enables stable small-signal amplification up to mid-VHF range, suitable for pre-amplifier stages.
R_thJS	≤ 70 K/W - Junction-to-soldering-point thermal resistance enables reliable operation at 500 mW dissipation with standard PCB copper area.

Pinout & Package

BC817K16E6327HTSA1 is housed in a Pb-free, RoHS-compliant SOT-23 plastic package with gull-wing leads. The package outline conforms to JEDEC TO-236AB and supports reflow soldering per IPC/JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink terminal; connected to ground or low-side return path; requires low-impedance layout to minimize V_BE error in precision current mirrors.
2 (Base)	B	Control input; driven by logic-level or resistor-limited current source; base resistor must limit I_B to ≤100 mA peak per absolute maximum rating.
3 (Collector)	C	Current source terminal; connects to load and supply rail; layout must minimize trace inductance to suppress switching overshoot in inductive loads.

Key Features

Feature	Design Value
AEC-Q101 qualified	Qualified for automotive applications per stress test requirements including HTSL, TC, and HTRB-enables use in non-safety-critical vehicle subsystems without additional qualification.
Low V_CE(sat)	≤0.7 V at full-rated 500 mA collector current-reduces power loss by >30% versus legacy BC817 variants, improving thermal margin in dense PCB layouts.
High h_FE consistency	100–160 range (Group 16) with tight binning-eliminates need for individual base resistor trimming in production assemblies.
Pb-free & RoHS compliant	Lead-free matte tin plating on Cu alloy leadframe-meets EU Directive 2011/65/EU and supports lead-free reflow profiles up to 260 °C peak.

Applications

Automotive Body Control Unit

Industrial Sensor Signal Conditioning

Use Scenario: Driving resistive and inductive loads such as door lock actuators and HVAC damper motors in 12 V/24 V systems.

IC Role / Device Role / Timing Role: Discrete NPN switch providing galvanic isolation between microcontroller GPIO and load, with fast turn-on/turn-off controlled by base current.

Use Value: AEC-Q101 qualification and 45 V V_CEO ensure reliability against load-dump transients up to ISO 7637-2 Pulse 1/2a.

Use Scenario: Amplifying low-level analog outputs (e.g., 0–100 mV) from thermopile or strain-gauge sensors into 0–3.3 V ADC input ranges.

IC Role / Device Role / Timing Role: Common-emitter DC amplifier stage with emitter degeneration resistor for stable gain and linearity.

Use Value: 100–160 h_FE group guarantees predictable gain across temperature, reducing calibration drift in unheated enclosures.

Consumer Appliance Motor Interface

Power Supply Enable Switching

Use Scenario: Controlling brushed DC fan motors in refrigerators and washing machines via PWM-driven base signal.

IC Role / Device Role / Timing Role: Saturated-switch mode transistor acting as low-side motor driver with flyback diode protection.

Use Value: 0.7 V V_CE(sat) limits conduction loss to <150 mW at 500 mA, enabling operation without heatsink in sealed plastic housings.

Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby → 3.3 V logic) in multi-rail AC/DC adapters and PoE injectors.

IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS gate drive signals or LDO EN pins.

Use Value: 500 mA I_C rating supports direct driving of multiple downstream enable inputs without buffering.

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
BC817-16LT1G (ON Semiconductor)	Same V_CEO/I_C/h_FE specs but SOT-23-3 package with different leadframe plating; R_thJS = 75 K/W.	Not AEC-Q101 qualified; limited to commercial-grade consumer electronics.	Select when automotive qualification is unnecessary and cost sensitivity outweighs thermal margin.
MMBT3904LT1G (ON Semiconductor)	Lower V_CEO (40 V), lower h_FE (100–300, wider spread), higher V_CE(sat) (0.8 V typ).	Lacks AEC-Q101 qualification and guaranteed h_FE grouping; less stable gain vs. temperature.	Choose only for non-automotive, low-cost, low-power signal switching where gain consistency is secondary.

Compared with BC817K16E6327HTSA1, BC817-16LT1G offers identical electrical performance but lacks automotive qualification, while MMBT3904LT1G trades guaranteed gain binning and thermal efficiency for broader availability and lower unit cost in non-automotive designs.

Availability

BC817K16E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor interfaces, and consumer appliance motor drives requiring stable component supply and long-term lifecycle support.

Supply support for BC817K16E6327HTSA1 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

This part belongs to Infineon's BC817K family of AEC-Q101-qualified general-purpose NPN transistors, designed specifically for automotive and industrial applications demanding high reliability, tight parameter binning, and robust thermal performance in compact SOT-23 packages.

FAQ

Is BC817K16E6327HTSA1 pin-compatible with BC817-16?

Yes, BC817K16E6327HTSA1 uses the same SOT-23 package and pinout (Emitter-Base-Collector on pins 1–2–3) as BC817-16. However, it adds AEC-Q101 qualification, tighter h_FE binning (Group 16), and improved thermal resistance (≤70 K/W vs. typical 75 K/W), making it suitable for automotive deployment where the standard BC817-16 is not certified.

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current is 100 mA, but for reliable continuous operation, base current should be limited to ≤50 mA to maintain V_CE(sat) ≤0.7 V and avoid localized heating at the base-emitter junction. Pulse operation allows up to 200 mA peak (I_BM) with duty cycle <2% and pulse width <300 µs.

Does this transistor require external protection against inductive kickback?

Yes-BC817K16E6327HTSA1 has no integrated flyback diode. When switching inductive loads (e.g., relays, solenoids), a discrete external freewheeling diode (e.g., BAS216) must be placed across the load with cathode to V_CC to clamp V_CE spikes and prevent secondary breakdown.

Can BC817K16E6327HTSA1 be used in linear amplifier configurations?

Yes-it is characterized for linear operation with specified h_FE vs. I_C curves and V_CE(sat) behavior. For Class-A amplifiers, bias must ensure V_CE ≥ 1 V and junction temperature remains ≤150 °C; derate P_tot linearly above T_S = 115 °C using the provided P_tot vs. T_S curve.

BC817K16E6327HTSA1 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

BC817K16E6327HTSA1 FAQ

1.How can I place an order for BC817K16E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC817K16E6327HTSA1 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 BC817K16E6327HTSA1 reliable?

The price and inventory of BC817K16E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817K16E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BC817K16E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817K16E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC817K16E6327HTSA1?

BC817K16E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC817K16E6327HTSA1 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 BC817K16E6327HTSA1?

For technical support, including BC817K16E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817K16E6327HTSA1 requirements.

6.How does Aetrix verify that BC817K16E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BC817K16E6327HTSA1 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 BC817K16E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BC817K16E6327HTSA1?

All BC817K16E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC817K16E6327HTSA1, 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 BC817K16E6327HTSA1 part is unused and in its original packaging.

Return procedure for BC817K16E6327HTSA1:

1.Submit a request within 90 days.

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

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