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

Infineon Technologies BC817-16B5003

Name: BC817-16B5003
Brand: Infineon Technologies
SKU: BC817-16B5003
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC817-16B5003

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BC817-16B5003.pdf

Description:: TRANS NPN 45V 0.5A PG-SOT23-3-11

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC817-16B5003 from Nexperia is an NPN silicon general-purpose audio-frequency transistor in SOT23 package, rated for 45 V V_CEO, 500 mA I_C, and minimum h_FE of 100 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 switching and linear amplification stages of power management and signal conditioning circuits.

For engineers reviewing the BC817-16B5003 datasheet, BC817-16B5003 pinout, BC817-16B5003 application, or BC817-16B5003 equivalent, key selection criteria include verified DC current gain group (h_FE = 100–160), RoHS-compliant SOT23 thermal performance (R_thJS ≤ 215 K/W), and AEC-Q101 qualification for automotive-grade reliability in discrete biasing and load-switching roles.

Technical Context

This NPN bipolar junction transistor is optimized for linear and switching operation in ambient temperatures up to 150 °C, with a guaranteed h_FE range defined per gain group (16 = 100–160) and stable f_T of 170 MHz at 50 mA/5 V. Its low V_CE(sat) and high I_C capability support efficient current amplification in compact DC-DC feedback paths and LED driver current sinks.

The device features complementary PNP pairing with BC807 series, supports pulse operation up to 1 A I_CM, and maintains specified C_cb ≤ 6 pF and C_eb ≤ 60 pF at standard test conditions - enabling predictable AC response in AF amplifier coupling and oscillator bias networks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before breakdown; enables use in 36 V rail systems with safety margin.
I_C	500 mA continuous - Supports medium-current switching in relay drivers and fan controllers without forced cooling.
h_FE (min)	100 @ 100 mA, 1 V - Ensures reliable base drive sizing for saturation in logic-level interfacing applications.
V_CE(sat)	0.7 V max @ 500 mA / 50 mA - Minimizes conduction loss and self-heating in high-duty-cycle switch mode.
f_T	170 MHz - Sufficient for audio-band amplification and low-MHz oscillator designs with stable gain.
R_thJS	≤215 K/W - Defines thermal path resistance from junction to solder point; critical for PCB copper area design.
P_tot	330 mW @ T_S ≤ 79 °C - Sets maximum steady-state power dissipation under defined board-mount thermal conditions.

Pinout & Package

BC817-16B5003 uses the industry-standard SOT23 surface-mount package (3-pin, 1.3 mm × 2.9 mm × 1.0 mm), with lead-free terminations and AEC-Q101 qualification for automotive use.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink node; connects to ground or low-side reference in common-emitter configurations.
2 (Base)	B	Control input; requires current-limited drive (max 100 mA DC, 200 mA peak) to avoid damage.
3 (Collector)	C	Current source node; interfaces with load (e.g., relay coil, LED string) and supply rail.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress-test requirements including HTOL, TC, and HTRB.
RoHS-compliant packaging	Lead-free SOT23 construction meets EU Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1.
High h_FE consistency	Guaranteed 100–160 gain range (Group 16) ensures predictable base current across production lots.
Low V_CE(sat)	0.7 V max at full 500 mA load reduces power loss by >30% vs. legacy general-purpose transistors.
Complementary PNP pairing	Direct replacement with BC807-16 enables push-pull output stages without redesign.

Applications

Automotive Door Module

Industrial PLC Output Stage

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

IC Role / Device Role / Timing Role: Discrete NPN switch controlling 12 V/300 mA inductive loads with flyback protection.

Use Value: AEC-Q101 qualification ensures 15-year field reliability; low V_CE(sat) limits thermal rise in sealed enclosures.

Use Scenario: Isolating microcontroller GPIOs from 24 V solenoid and valve actuation circuits.

IC Role / Device Role / Timing Role: Medium-current interface transistor providing galvanic separation and current gain.

Use Value: 500 mA I_C rating eliminates need for external driver ICs; SOT23 footprint saves PCB space in dense I/O modules.

Consumer Audio Amplifier Bias

Medical Sensor Signal Conditioning

Use Scenario: Setting quiescent current in Class-A headphone amplifier emitter followers.

IC Role / Device Role / Timing Role: Linear-mode current source establishing stable DC operating point.

Use Value: Tight h_FE tolerance (100–160) minimizes channel-to-channel offset; f_T > 170 MHz preserves audio bandwidth.

Use Scenario: Amplifying low-level thermistor or photodiode signals in portable diagnostic devices.

IC Role / Device Role / Timing Role: Low-noise preamplifier stage with DC-coupled gain and minimal thermal drift.

Use Value: 150 °C T_j rating allows operation near battery cells; low C_eb (≤60 pF) maintains stability in high-gain feedback loops.

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
BC817-25	Higher h_FE group (160–250) at same V_CEO/I_C; identical SOT23 package and pinout.	Preferred where lower base drive current is needed (e.g., ultra-low-power MCU GPIOs).	Select when higher gain reduces required base resistor value and improves noise immunity in weak-signal paths.
MMBT3904LT1G	Same V_CEO (40 V), but lower h_FE min (100), higher V_CE(sat) (0.3 V typ), and non-AEC-Q101 rated.	Suitable for commercial-grade consumer products where automotive qualification is not required.	Choose for cost-sensitive non-automotive designs where thermal margin and qualification are secondary to BOM simplification.

Compared with BC817-25 and MMBT3904LT1G, BC817-16B5003 provides balanced gain, AEC-Q101 assurance, and proven thermal robustness - making it optimal for automotive and industrial applications demanding both reliability and predictable DC characteristics.

Availability

BC817-16B5003 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and medical sensor front-ends requiring stable component supply with long-term lifecycle visibility.

Supply support for BC817-16B5003 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

BC817-16B5003 belongs to Nexperia's BC817/BC818 family of AEC-Q101-qualified general-purpose transistors designed specifically for automotive signal switching and linear amplification in harsh-environment ECUs and power modules.

FAQ

Is BC817-16B5003 pin-compatible with BC817-16 and BC817-16W?

Yes - BC817-16B5003 shares identical SOT23 pinout (E-B-C) and mechanical dimensions with BC817-16 and BC817-16W. Differences lie only in internal die version and thermal resistance (R_thJS ≤ 215 K/W for BC817-16B5003 vs. ≤ 80 K/W for BC817-16W), which affects maximum power handling at elevated board temperatures.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is 100 mA, as specified in the "Maximum Ratings" table. For reliable long-term operation, design base drive to stay below 50 mA continuous, especially when operating near T_j = 150 °C, to prevent degradation of h_FE and V_CE(sat).

Can BC817-16B5003 replace BC807-16 in a circuit?

No - BC807-16 is a PNP transistor with complementary polarity; direct substitution would invert logic and cause circuit failure. However, BC817-16B5003 and BC807-16 are intended as matched NPN/PNP pairs for push-pull or differential amplifier topologies, not drop-in replacements.

Does BC817-16B5003 require a heatsink in typical SOT23 mounting?

No - the SOT23 package relies on PCB copper pour for thermal dissipation. With 330 mW P_tot at T_S ≤ 79 °C, a minimum 25 mm² 1-oz copper pad under the tab is sufficient for most applications; no external heatsink is needed unless ambient exceeds 85 °C or duty cycle approaches 100%.

BC817-16B5003 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

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-SOT23-3-11

BC817-16B5003 FAQ

1.How can I place an order for BC817-16B5003 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC817-16B5003 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 BC817-16B5003 reliable?

The price and inventory of BC817-16B5003 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-16B5003 is usually 5 days.

3.What payment methods are accepted for BC817-16B5003?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-16B5003 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC817-16B5003?

BC817-16B5003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC817-16B5003 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 BC817-16B5003?

For technical support, including BC817-16B5003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-16B5003 requirements.

6.How does Aetrix verify that BC817-16B5003 is sourced from the original manufacturer or authorized distributors?

All BC817-16B5003 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 BC817-16B5003 meets industry standards.

7.What is the process for return or replacement of BC817-16B5003?

All BC817-16B5003 units undergo pre-shipment inspection (PSI). If there is an issue with BC817-16B5003, 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 BC817-16B5003 part is unused and in its original packaging.

Return procedure for BC817-16B5003:

1.Submit a request within 90 days.

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

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