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

Nexperia USA Inc. BC817-16QCZ

Name: BC817-16QCZ
Brand: Nexperia USA Inc.
SKU: BC817-16QCZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC817-16QCZ

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 3-XDFN Exposed Pad

Datasheet:: BC817-16QCZ.pdf

Description:: TRANS NPN 45V 0.5A DFN1412D-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,752

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Product details

Overview

BC817-16QCZ from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in a DFN1412D-3 (SOT8009) leadless SMD package with side-wettable flanks. It delivers DC current gain (h_FE) of 100–250 at V_CE = 1 V and I_C = 100 mA, supports peak collector current up to 1 A, and is AEC-Q101 qualified for automotive use - deployed in low-voltage switching circuits such as LED drivers and microcontroller I/O interface stages.

For engineers reviewing the BC817-16QCZ datasheet, BC817-16QCZ pinout, BC817-16QCZ application, or BC817-16QCZ equivalent, key selection criteria include its 0.5 mm profile, thermal resistance of 329 K/W on FR4 (35 μm Cu), side-wettable flank compatibility with automated optical inspection (AOI), and defined saturation voltage of ≤700 mV at I_C = 500 mA / I_B = 50 mA.

Technical Context

This NPN bipolar junction transistor operates as a linear amplifier or saturated switch in low-power analog and digital signal paths. Its design emphasizes high-current capability (500 mA continuous), robust breakdown ratings (V_CEO = 45 V, V_CBO = 50 V), and stable h_FE across temperature (−55 °C to 150 °C).

The DFN1412D-3 package enables high-density PCB layouts with 1.4 mm × 1.2 mm footprint and 0.48 mm body height. Side-wettable flanks support reliable solder-joint inspection via AOI, while AEC-Q101 qualification confirms suitability for automotive powertrain and body electronics where reliability under thermal cycling and vibration is critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage before breakdown under open-base conditions; defines upper rail limit in switching applications.
I_C	500 mA - Continuous collector current rating at 25 °C ambient; sets load-driving capacity in relay drivers or fan controllers.
h_FE	100–250 - DC current gain range at V_CE = 1 V, I_C = 100 mA; determines base drive requirements for predictable saturation.
V_CE(sat)	≤700 mV - Collector-emitter saturation voltage at I_C = 500 mA / I_B = 50 mA; directly impacts conduction loss and self-heating in switching mode.
P_tot	380 mW - Total power dissipation on FR4 with 35 μm copper; constrains usable duty cycle and heatsinking in compact designs.
R_th(j-a)	329 K/W - Junction-to-ambient thermal resistance on standard FR4; used to calculate junction temperature rise under steady-state bias.
AEC-Q101	Qualified - Confirmed reliability for automotive applications including engine control modules and lighting systems per stress-test standard.

Pinout & Package

DFN1412D-3 (SOT8009) is a 3-terminal, leadless, ultra-thin plastic package measuring 1.4 mm × 1.2 mm × 0.48 mm with side-wettable flanks for AOI-compatible reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Controls minority-carrier injection; requires current-limited drive (e.g., 5–50 mA) to achieve full saturation without overdrive.
2	Emitter (E)	Common reference terminal for NPN configuration; connected to ground or low-side return path in switching topologies.
3	Collector (C)	High-current output node; handles switched load current up to 500 mA and must be routed with adequate copper area for thermal management.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing.
Side-wettable flanks	Enables automated optical inspection (AOI) of solder joints without X-ray, reducing post-reflow defect escape in high-volume manufacturing.
0.5 mm package height	Supports ultra-low-profile designs in space-constrained modules such as automotive sensors and wearable electronics.
Three h_FE variants	BC817-16QCZ (100–250), BC817-25QCZ (160–400), BC817-40QCZ (250–600) allow precise gain matching for consistent switching thresholds.
Thermal enhancement	Exposed die pad (terminal 2) provides primary thermal path; mounting on ≥35 μm Cu improves power handling by 27% vs. conventional SOT23.

Applications

Automotive Interior Lighting

Industrial PLC I/O Modules

Use Scenario: Driving 12 V LED strings in dashboard backlighting and door courtesy lamps.

IC Role / Device Role / Timing Role: Low-side switch controlled by MCU GPIO, operating in saturated mode with <10 µs turn-on/turn-off.

Use Value: 700 mV V_CE(sat) minimizes power loss and heat generation in sealed lamp housings where airflow is restricted.

Use Scenario: Isolating and amplifying 24 V DC sensor signals into PLC input logic levels.

IC Role / Device Role / Timing Role: Signal-level NPN amplifier with fixed-gain bias network, providing level translation and noise immunity.

Use Value: Stable h_FE across −40 °C to 85 °C ensures consistent gain calibration without software compensation.

Consumer Appliance Motor Control

Medical Portable Device Power Management

Use Scenario: Switching small brushed DC motors in smart home appliances (e.g., coffee grinders, air purifiers).

IC Role / Device Role / Timing Role: High-current saturated switch interfacing between microcontroller PWM output and motor winding.

Use Value: 1 A peak current rating accommodates motor inrush transients without secondary protection components.

Use Scenario: Enabling/disabling auxiliary power rails in battery-powered diagnostic tools and handheld monitors.

IC Role / Device Role / Timing Role: Load switch controlling 3.3 V or 5 V subsystems during sleep/wake transitions.

Use Value: 0.48 mm height and 1.2 mm width enable integration into sub-10 mm thick enclosures without compromising thermal margin.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC817-16LT1G	TO-236AB (SOT-23) package; 1.3 mm × 1.3 mm × 1.1 mm; no side-wettable flanks; R_th(j-a) = 400 K/W.	Lacks AOI support and thermal performance; suitable only for non-automotive, non-high-density layouts.	Select when legacy SOT-23 footprint compatibility is required and AOI is not mandated.
MMBT3904LT1G	Lower V_CEO = 40 V; h_FE = 100–300; same SOT-23 package; not AEC-Q101 qualified.	Not rated for 45 V automotive rails; unsuitable for 12 V/24 V systems with load-dump transients.	Choose only for cost-sensitive consumer applications below 40 V with no automotive qualification needs.

Compared with BC817-16QCZ, BC817-16LT1G trades AOI capability and thermal efficiency for legacy footprint reuse, while MMBT3904LT1G sacrifices voltage margin and automotive compliance for broader commercial availability - making BC817-16QCZ the sole choice for space-constrained, AEC-Q101–compliant 45 V switching.

Availability

BC817-16QCZ is available at Aetrix Electronics and suitable for automotive interior lighting, industrial PLC I/O modules, and consumer appliance motor control requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 traceability.

Supply support for BC817-16QCZ 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 semiconductors for high-volume applications, delivering high-performance, reliable, and efficient devices with strong automotive and industrial focus.

The BC817QC series belongs to Nexperia's AEC-Q101–qualified general-purpose transistor product line, engineered specifically for robust, space-efficient switching and amplification in automotive body electronics and industrial control systems.

FAQ

What is the maximum allowable junction temperature for BC817-16QCZ?

The absolute maximum junction temperature (T_j) is 150 °C, as specified in Table 6 of the datasheet. Operation above this threshold risks permanent degradation of h_FE and increased leakage currents. Derating is required above 25 °C ambient using the 329 K/W thermal resistance value for standard FR4 mounting.

Does BC817-16QCZ support pulse operation beyond its DC current rating?

Yes - it supports peak collector current (I_CM) of 1 A for single pulses ≤1 ms at 25 °C ambient, as confirmed in Table 2 and Table 6. This enables short-duration inrush current handling in relay or solenoid driver circuits without thermal runaway.

How does the side-wettable flank design impact soldering process validation?

The side-wettable flanks on the DFN1412D-3 package allow automated optical inspection (AOI) to verify solder fillet formation on all three terminals, eliminating reliance on X-ray for quality assurance. Reflow profiles must follow Nexperia's recommended stencil thickness (0.1 mm) and land pattern in Figure 17.

Is BC817-16QCZ pin-compatible with other members of the BC817QC series?

Yes - all BC817QC variants (BC817-16QCZ, BC817-25QCZ, BC817-40QCZ) share identical DFN1412D-3 (SOT8009) pinout and package dimensions. Only the h_FE range differs; substitution requires verification of gain-dependent bias stability in the target circuit.

BC817-16QCZ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BC817QC

Package/Case:: 3-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

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:: 380 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: DFN1412D-3

BC817-16QCZ FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your BC817-16QCZ 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 BC817-16QCZ?

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

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

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

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

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

Return procedure for BC817-16QCZ:

1.Submit a request within 90 days.

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

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