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Nexperia USA Inc. BC817-16W-QF
- Part No.:
- BC817-16W-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC817-16W-QF.pdf
- Description:
- TRANS NPN 45V 0.5A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:5,528
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Product details
Overview
BC817-16W-QF from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for automotive-grade switching and amplification with hFE range of 100–250 at VCE = 1 V and IC = 100 mA. It delivers 700 mV VCE(sat) at IC = 500 mA / IB = 50 mA and supports 100 MHz fT, enabling reliable low-voltage digital logic interfacing and sensor signal conditioning in compact automotive ECUs.
For engineers reviewing the BC817-16W-QF datasheet, BC817-16W-QF pinout, BC817-16W-QF application, or BC817-16W-QF equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal derating curves, SC-70 footprint layout, and validated automotive-grade alternatives - all directly traceable to Nexperia's official Rev. 1 product data sheet dated 8 June 2021.
Technical Context
This NPN bipolar junction transistor operates as a current-controlled switch or linear amplifier with fixed three-terminal topology (B-E-C), supporting DC and pulsed collector currents up to 500 mA continuous and 1 A peak. Its base-emitter voltage is 1.2 V at IC = 500 mA, and saturation behavior is characterized under IC/IB = 10 conditions across −55 °C to +150 °C ambient.
The device features AEC-Q101 qualification, 150 °C maximum junction temperature, and thermal resistance Rth(j-a) of 625 K/W on standard FR4 PCB - confirming suitability for under-hood automotive modules where thermal margin and reliability under transient load are critical design constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; defines rail compatibility in 12 V/24 V automotive systems. |
| IC | 500 mA - Continuous collector current rating; supports driving small relays, LEDs, or MOSFET gates without external heatsinking. |
| hFE | 100–250 - DC current gain range at VCE = 1 V, IC = 100 mA; enables predictable base drive sizing for stable switching. |
| VCE(sat) | 700 mV max at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| fT | 100 MHz - Transition frequency confirms usable bandwidth for audio-frequency amplification and fast digital switching up to ~10 MHz. |
| Ptot | 290 mW - Total power dissipation on FR4 PCB with 1 cm² collector pad; sets practical thermal limit for sustained 500 mA operation. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance on standard footprint; informs board-level thermal design for ambient temperatures up to 125 °C. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads; dimensions per IEC/JEDEC outline: 2.2 mm × 1.35 mm × 0.95 mm height; 0.65 mm lead pitch; tin-plated copper leads compatible with standard reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires 50 mA base drive for full 500 mA collector conduction at low VCE(sat). |
| 2 | Emitter (E) | Reference terminal for biasing; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | High-current output node; handles switched loads up to 45 V and 500 mA; thermally coupled to PCB pad for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements. |
| Three hFE selections | BC817-16W-QF (100–250), BC817-25W-QF (160–400), BC817-40W-QF (250–600) - enables precise gain matching across production batches. |
| Low VCE(sat) | 700 mV max ensures <150 mW conduction loss at 500 mA, reducing thermal stress in space-constrained modules. |
| 100 MHz fT | Supports clean square-wave switching in PWM-driven actuators and fast-response analog signal buffering without phase lag. |
| SC-70 footprint | 0.65 mm pitch and 2.2 mm × 1.35 mm body enable high-density placement on multi-layer automotive PCBs with minimal board area. |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
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 inductive loads with flyback protection; operates in saturated on/off mode. Use Value: 45 V VCEO withstands load-dump transients; 500 mA IC supports dual relay coils; AEC-Q101 ensures 15-year field reliability. |
Use Scenario: Level-shifting and amplifying 3.3 V microcontroller GPIO signals to interface with 5 V industrial sensors. IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed bias network; provides voltage gain and current buffering. Use Value: 100–250 hFE enables stable gain calibration; 100 MHz fT preserves signal integrity up to 10 kHz sensor outputs. |
| LED Lighting Driver | Power Supply Enable Switch |
Use Scenario: Constant-current switching for interior cabin LED strings in 24 V commercial vehicles. IC Role / Device Role / Timing Role: Low-side current switch in PWM dimming circuit; driven by MCU timer output. Use Value: 700 mV VCE(sat) limits power loss to <350 mW at 500 mA; SC-70 package fits tight LED driver PCB layouts. |
Use Scenario: Enabling/disabling auxiliary 5 V LDO regulators in infotainment head units based on ignition state. IC Role / Device Role / Timing Role: High-side or low-side enable switch; controlled by vehicle CAN bus microcontroller. Use Value: 150 °C Tj(max) and AEC-Q101 qualification ensure operation during prolonged engine-off hot-soak conditions. |
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 | Same hFE range (100–250) and VCEO (45 V), but SOT23 package (larger footprint, higher Ptot = 350 mW). | Not AEC-Q101 qualified; rated for commercial/industrial use only - unsuitable for automotive ECU deployment. | Select when cost or legacy SOT23 layout compatibility outweighs automotive qualification requirements. |
| MMBT3904LT1G | Lower VCEO (40 V), lower IC (200 mA), wider hFE spread (100–400); same SOT23 package. | Lacks AEC-Q101 certification and thermal robustness for under-hood environments; limited to non-safety-critical subsystems. | Choose only for non-automotive applications where 40 V rail margin and 200 mA load current are sufficient. |
Compared with BC817-16W-QF, BC817-16LT1G offers higher power handling but no automotive qualification, while MMBT3904LT1G trades voltage/current capability and qualification for broader hFE tolerance - making BC817-16W-QF the sole option meeting AEC-Q101, 45 V, and 500 mA requirements in SC-70.
Availability
BC817-16W-QF is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and LED lighting drivers requiring stable component supply with guaranteed AEC-Q101 compliance and long-term lifecycle support.
Supply support for BC817-16W-QF 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 BC817W-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor portfolio, engineered specifically for robust switching and amplification in harsh automotive environments - not generic replacement but purpose-built for ECU, body control, and ADAS subsystems.
FAQ
Is BC817-16W-QF pin-compatible with BC817-16W-Q?
Yes - BC817-16W-QF uses the identical SOT323 (SC-70) package and pinout (1=B, 2=E, 3=C) as BC817-16W-Q. The "F" suffix denotes tape-and-reel packaging per JEDEC standard J-STD-020, with no electrical or mechanical differences. Both share identical limiting values, characteristics, and AEC-Q101 qualification.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 200 mA per Table 6, but for continuous DC operation, the recommended limit is 50 mA - derived from the specified test condition for VCE(sat) (IC = 500 mA, IB = 50 mA). Exceeding 50 mA continuously risks thermal runaway due to limited Ptot (290 mW) and Rth(j-a) (625 K/W).
Does BC817-16W-QF support PWM switching at 25 kHz?
Yes - with fT = 100 MHz and typical VCE(sat) settling time <100 ns, BC817-16W-QF fully supports 25 kHz PWM in LED dimming and motor control. Its low Cc (3 pF) and fast turn-on/turn-off times (<100 ns each) prevent switching losses and waveform distortion at this frequency.
How does thermal performance change with PCB copper area?
Rth(j-a) improves from 625 K/W (standard footprint) to 431 K/W when the collector pad is enlarged to 1 cm² on FR4 - a 31 % reduction in thermal resistance. This allows 25 % higher continuous IC before reaching Tj = 150 °C at 85 °C ambient, per Figure 1's derating curve.
BC817-16W-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC817-16W-QF FAQ
1.How can I place an order for BC817-16W-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-16W-QF 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 BC817-16W-QF reliable?
The price and inventory of BC817-16W-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-16W-QF is usually 5 days.
3.What payment methods are accepted for BC817-16W-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-16W-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-16W-QF?
BC817-16W-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-16W-QF 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 BC817-16W-QF?
For technical support, including BC817-16W-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-16W-QF requirements.
6.How does Aetrix verify that BC817-16W-QF is sourced from the original manufacturer or authorized distributors?
All BC817-16W-QF 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 BC817-16W-QF meets industry standards.
7.What is the process for return or replacement of BC817-16W-QF?
All BC817-16W-QF units undergo pre-shipment inspection (PSI). If there is an issue with BC817-16W-QF, 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 BC817-16W-QF part is unused and in its original packaging.
Return procedure for BC817-16W-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-16W-QF Tags
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