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

Infineon Technologies BC818K16WH6327XTSA1

Name: BC818K16WH6327XTSA1
Brand: Infineon Technologies
SKU: BC818K16WH6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC818K16WH6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC818K16WH6327XTSA1.pdf

Description:: TRANS NPN 25V 0.5A PG-SOT323

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Product details

Overview

BC818K16WH6327XTSA1 from Infineon Technologies is an NPN silicon general-purpose audio-frequency transistor in SOT323 package, rated for 25 V V_CEO, 500 mA I_C, and 250 mW P_tot at T_S ≤ 130 °C, with h_FE = 100–160 (Group 16), V_CE(sat) ≤ 0.7 V at I_C = 500 mA/I_B = 50 mA, used in low-voltage switching and amplification stages of automotive body control modules.

For engineers reviewing the BC818K16WH6327XTSA1 datasheet, BC818K16WH6327XTSA1 pinout, BC818K16WH6327XTSA1 application, or BC818K16WH6327XTSA1 equivalent, key selection criteria include guaranteed h_FE group consistency, AEC-Q101 qualification, thermal derating behavior in SOT323, and saturation voltage performance under high-current DC bias conditions.

Technical Context

This device operates as a discrete NPN bipolar junction transistor optimized for linear amplification and saturated switching in automotive and industrial signal conditioning circuits. It features a V_CEO rating of 25 V and V_CBO of 30 V, enabling use in 12 V and 24 V rail systems with margin against transients.

Its h_FE group 16 specification ensures predictable current gain across production lots at I_C = 100 mA/V_CE = 1 V, while the 0.7 V max V_CE(sat) at 500 mA supports efficient low-side switching in power management subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	25 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in 12 V automotive logic-level switching
I_C	500 mA - Continuous collector current rating; supports medium-power driver stages without forced cooling
h_FE (Group 16)	100–160 - Guaranteed DC current gain at I_C = 100 mA/V_CE = 1 V; enables stable bias design in amplifier feedback networks
V_CE(sat)	≤ 0.7 V at I_C = 500 mA/I_B = 50 mA - Low saturation voltage minimizes conduction loss in on-state switching applications
P_tot	250 mW at T_S ≤ 130 °C - Power dissipation limit for SOT323 package; requires PCB copper area planning per AN077
f_T	170 MHz typical - Transition frequency confirms suitability for audio-band amplification and low-MHz digital signal buffering
R_thJS	≤ 80 K/W - Junction-to-soldering-point thermal resistance; informs thermal interface design for reliability at elevated ambient

Pinout & Package

BC818K16WH6327XTSA1 uses the SOT323 (SC-70) plastic surface-mount package, measuring 2.1 mm × 2.0 mm × 0.95 mm, with gull-wing leads and RoHS-compliant matte tin plating.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Current-controlled input terminal	Receives base drive current to modulate collector current; requires series resistor for current limiting in digital switch applications
2 (Emitter)	Reference node for BJT operation	Connected to ground or low-impedance return path; establishes emitter-base voltage reference for bias stability
3 (Collector)	Output current terminal	Delivers amplified/saturated output current; routed to load with minimal trace inductance for switching integrity

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress test requirements including HTSL, TC, and HTRB - enables use in non-safety-critical vehicle subsystems
h_FE group binning (16)	Guaranteed 100–160 gain range at standard test conditions - reduces need for post-bias trimming in production
Low V_CE(sat)	≤ 0.7 V at full-rated 500 mA - lowers power loss by >30% vs. generic transistors with 1.0 V saturation
SOT323 footprint	Compact 2.1 × 2.0 mm outline with 0.65 mm lead pitch - supports high-density PCB layouts in space-constrained ECUs
Pb-free / RoHS compliant	Matte tin termination with no lead, cadmium, or hexavalent chromium - meets global environmental compliance mandates

Applications

Automotive Door Module Driver

Industrial Sensor Signal Amplifier

Use Scenario: Driving resistive loads such as window lift motors and mirror actuators in 12 V body control units.

IC Role / Device Role / Timing Role: NPN switch operating in saturation mode to sink up to 500 mA from load to ground.

Use Value: V_CE(sat) ≤ 0.7 V ensures <150 mW conduction loss at full load, reducing thermal stress on PCB copper.

Use Scenario: Amplifying low-level analog outputs from temperature or pressure sensors in factory automation nodes.

IC Role / Device Role / Timing Role: Linear-mode common-emitter amplifier with fixed bias network for 20–20 kHz bandwidth.

Use Value: f_T = 170 MHz provides ample gain-margin for stable 20 kHz operation with h_FE-controlled bias.

LED Current Regulator

Power Supply Enable Switch

Use Scenario: Constant-current LED driver stage in dashboard backlighting with PWM dimming input.

IC Role / Device Role / Timing Role: Switching transistor controlling LED cathode current via base-pulse modulation.

Use Value: 500 mA I_C rating supports multi-LED strings; fast turn-on/off enabled by low C_cb (3 pF).

Use Scenario: Enabling/disabling auxiliary 5 V or 3.3 V rails in embedded power sequencers.

IC Role / Device Role / Timing Role: Low-side enable switch placed between regulator GND and system ground.

Use Value: AEC-Q101 qualification ensures robustness against load dump transients during rail activation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC817-16W,115 (Nexperia)	V_CEO = 45 V, h_FE = 100–250, SOT323, same pinout	Higher voltage headroom but wider h_FE spread increases bias sensitivity	Select when higher V_CEO margin is required and gain tolerance can be managed in circuit design
MMBT3904LT1G (ON Semiconductor)	V_CEO = 40 V, h_FE = 100–300, SOT23, different pinout (1=E, 2=B, 3=C)	Requires PCB layout change; higher f_T (300 MHz) but no AEC-Q101 qualification	Choose for cost-sensitive industrial designs where automotive qualification is not mandated

Compared with BC818K16WH6327XTSA1, BC817-16W offers greater voltage safety margin but less consistent gain control, while MMBT3904LT1G delivers higher speed and lower cost but lacks automotive qualification and demands board redesign due to pinout mismatch.

Availability

BC818K16WH6327XTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, LED driver circuits, and power supply enable functions requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC818K16WH6327XTSA1 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 the BC817/BC818K family of AEC-Q101-qualified general-purpose NPN transistors designed specifically for reliable switching and amplification in automotive body electronics and industrial control units.

FAQ

What is the maximum allowable junction temperature for BC818K16WH6327XTSA1?

The absolute maximum junction temperature (T_j) is 150 °C, as specified in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent degradation of h_FE and increased leakage currents. Thermal design must ensure T_j remains below 150 °C under worst-case ambient and power dissipation conditions, using R_thJS ≤ 80 K/W and appropriate PCB copper area.

Is BC818K16WH6327XTSA1 pin-compatible with BC817K-16W?

Yes - both devices use identical SOT323 package with pin 1 = Base, pin 2 = Emitter, pin 3 = Collector. However, BC817K-16W has V_CEO = 45 V versus 25 V for BC818K16WH6327XTSA1, so direct substitution is only safe if the application's collector-emitter voltage remains below 25 V.

Does BC818K16WH6327XTSA1 support pulsed operation above its DC current rating?

Yes - peak collector current (I_CM) is rated at 1000 mA for pulse widths < 300 µs and duty cycle < 2%. This allows short-duration surge handling in motor startup or fault-clearing scenarios, provided average power remains within the 250 mW DC limit and thermal mass prevents junction overheating.

How does the h_FE group 16 specification affect circuit design?

h_FE group 16 guarantees a minimum of 100 and maximum of 160 at I_C = 100 mA/V_CE = 1 V, enabling deterministic bias resistor calculation without guard-banding. This reduces variation in quiescent current and improves consistency across production batches in amplifier and switch driver designs.

BC818K16WH6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 25 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:: 250 mW

Frequency - Transition:: 170MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT323

BC818K16WH6327XTSA1 FAQ

1.How can I place an order for BC818K16WH6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC818K16WH6327XTSA1 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 BC818K16WH6327XTSA1 reliable?

The price and inventory of BC818K16WH6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC818K16WH6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BC818K16WH6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC818K16WH6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC818K16WH6327XTSA1?

BC818K16WH6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC818K16WH6327XTSA1 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 BC818K16WH6327XTSA1?

For technical support, including BC818K16WH6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC818K16WH6327XTSA1 requirements.

6.How does Aetrix verify that BC818K16WH6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BC818K16WH6327XTSA1 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 BC818K16WH6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BC818K16WH6327XTSA1?

All BC818K16WH6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC818K16WH6327XTSA1, 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 BC818K16WH6327XTSA1 part is unused and in its original packaging.

Return procedure for BC818K16WH6327XTSA1:

1.Submit a request within 90 days.

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

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