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Nexperia USA Inc. BC817-16-QR
- Part No.:
- BC817-16-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC817-16-QR.pdf
- Description:
- TRANS NPN 45V 0.5A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:24,000
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Product details
Overview
BC817-16-QR from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in SOT23 (TO-236AB) package, with DC current gain (hFE) of 100–250 at VCE = 1 V and IC = 100 mA, qualified to AEC-Q101 for automotive use, and commonly deployed in low-voltage switching circuits such as LED drivers and microcontroller interface buffers.
For engineers reviewing the BC817-16-QR datasheet, BC817-16-QR pinout, BC817-16-QR application, or BC817-16-QR equivalent, key selection criteria include its 45 V VCEO, 500 mA continuous collector current, 700 mV VCE(sat) at IC = 500 mA / IB = 50 mA, thermal resistance of 362 K/W on 1 cm² collector pad, and automotive-grade qualification status.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with defined breakdown limits: VCEO = 45 V, VCBO = 50 V, and VEBO = 5 V. Its pulsed operation supports ICM = 1 A (tp ≤ 1 ms), and it delivers fT = 100 MHz at VCE = 5 V, IC = 10 mA, enabling moderate-frequency amplification tasks.
Thermal performance is characterized by Rth(j-a) = 362 K/W when mounted on FR4 PCB with 1 cm² collector pad, and junction temperature is rated to 150 °C. The device exhibits Cc = 3 pF collector capacitance at VCB = 10 V, supporting stable high-frequency behavior in compact signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in switching applications. |
| IC | 500 mA - Continuous DC collector current rating; determines load-driving capability in linear or saturated switch modes. |
| hFE | 100–250 - DC current gain range at VCE = 1 V, IC = 100 mA; sets base drive requirement for reliable saturation. |
| VCE(sat) | 700 mV max at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss and heating in on-state switching. |
| Ptot | 345 mW - Total power dissipation with 1 cm² copper pad; defines thermal design margin for PCB layout. |
| fT | 100 MHz - Transition frequency confirms suitability for audio-frequency amplification and digital signal buffering up to ~10 MHz. |
| Cc | 3 pF - Collector capacitance at 10 V reverse bias; impacts high-frequency response and Miller effect in amplifier stages. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads, 1.3 mm profile, and standard reflow footprint (0.6 mm solder land width per pin). Dimensions: 2.9 × 1.3 × 1.0 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ≥50 mA base drive for full 500 mA collector conduction in saturation. |
| 2 | Emitter (E) | Reference terminal for current flow; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | High-current output node; routed to load and supply rail; thermally coupled to PCB copper for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive ambient temperature range (−40 °C to +150 °C) and stress testing, enabling use in engine control modules and body electronics. |
| Three hFE selections | BC817-16-QR (100–250), BC817-25-QR (160–400), BC817-40-QR (250–600); allows precise base drive optimization across production batches. |
| Low VCE(sat) | 700 mV max ensures <150 mW conduction loss at 500 mA, reducing thermal load in space-constrained PCBs. |
| 100 MHz fT | Supports stable small-signal amplification up to audio band and clean digital edge handling without oscillation. |
| SOT23 footprint compatibility | Standard 0.95 mm pin pitch and 2.9 mm body length enable drop-in replacement in legacy designs using BC847, MMBT3904, or PN2222A layouts. |
Applications
| Automotive Door Module Switching | Industrial PLC Input Buffer |
|---|---|
Use Scenario: Driving 12 V incandescent lamps and small solenoids in vehicle door latch and mirror control units. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, controlled by 3.3 V/5 V MCU GPIO with resistive base bias. Use Value: 45 V VCEO withstands automotive load-dump transients; AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime. |
Use Scenario: Level-shifting and isolation between 24 V field sensors and 3.3 V logic inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Discrete interface transistor providing galvanic separation and current gain for optocoupler-compatible input stages. Use Value: 500 mA IC supports robust sink capability; 3 pF Cc prevents signal integrity degradation at 10 kHz sensor update rates. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Signal Amplifier |
Use Scenario: PWM-driven fan and pump control in HVAC systems and kitchen appliances. IC Role / Device Role / Timing Role: Low-side switch modulating motor current at 20–25 kHz, synchronized to avoid audible noise. Use Value: 700 mV VCE(sat) limits conduction loss to <350 mW at 500 mA, enabling operation without heatsink in sealed enclosures. |
Use Scenario: Pre-amplifying low-level analog signals from ECG electrodes before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier stage with emitter degeneration for linearity and bandwidth control. Use Value: 100 MHz fT and 100–250 hFE support stable 10× gain up to 100 kHz with <0.5% THD at 1 VPP. |
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 |
|---|---|---|---|
| MMBT3904-7-F | hFE = 100–300; VCEO = 40 V; Ptot = 310 mW; not AEC-Q101 qualified | Limited to commercial/industrial use; lower voltage margin reduces robustness in 12 V automotive systems. | Select when cost sensitivity outweighs automotive qualification and 5 V headroom is acceptable. |
| BC847BW,115 | hFE = 200–450; VCEO = 45 V; same SOT23 package; AEC-Q101 qualified; higher gain variation | Higher hFE reduces base drive but increases sensitivity to temperature drift in precision bias networks. | Prefer where tighter gain tolerance is less critical than maximizing current gain in low-power sensor interfaces. |
Compared with MMBT3904-7-F, BC817-16-QR offers 5 V higher VCEO and automotive qualification; compared with BC847BW,115, it provides tighter hFE spread (100–250 vs. 200–450), simplifying base resistor design for consistent saturation across temperature.
Availability
BC817-16-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, consumer appliance motor control, and medical diagnostic signal conditioning requiring stable component supply and long-term lifecycle assurance.
Supply support for BC817-16-QR 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 advanced packaging technologies.
The BC817-Q series targets cost-sensitive, high-reliability general-purpose switching and amplification in automotive, industrial, and consumer applications-designed to replace legacy through-hole transistors while meeting stringent AEC-Q101 requirements.
FAQ
What is the maximum allowable base current for BC817-16-QR?
The absolute maximum peak base current is 200 mA for single pulses ≤1 ms at 25 °C ambient. For continuous DC operation, base current must be limited to ensure IC ≤ 500 mA and junction temperature remains ≤150 °C-typically ≤50 mA with appropriate thermal design.
Does BC817-16-QR support 24 V industrial control applications?
Yes-its 45 V VCEO provides 21 V headroom above 24 V nominal rails, accommodating transients up to ±20 V per IEC 61000-4-4. Combined with AEC-Q101 qualification, it meets extended temperature and surge immunity requirements for DIN-rail mounted PLC modules.
How does the hFE range affect base resistor selection?
With hFE = 100–250, base resistors must be sized for worst-case gain (hFE = 100) to guarantee saturation at IC = 500 mA. For 3.3 V GPIO driving via 1 kΩ resistor, IB ≈ 2.6 mA yields minimum forced β = 192-sufficient for reliable switching across temperature and process variation.
Can BC817-16-QR replace BC817-25-QR in existing designs?
Yes, with functional trade-offs: BC817-16-QR has lower hFE (100–250 vs. 160–400), requiring ~25% higher base current for equivalent collector drive. Layout and thermal design remain identical due to shared SOT23 package and pinout; verify saturation margin under worst-case temperature and voltage conditions.
BC817-16-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC817-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC817-16-QR FAQ
1.How can I place an order for BC817-16-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-16-QR 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 BC817-16-QR reliable?
The price and inventory of BC817-16-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-16-QR is usually 5 days.
3.What payment methods are accepted for BC817-16-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-16-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-16-QR?
BC817-16-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-16-QR 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 BC817-16-QR?
For technical support, including BC817-16-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-16-QR requirements.
6.How does Aetrix verify that BC817-16-QR is sourced from the original manufacturer or authorized distributors?
All BC817-16-QR 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 BC817-16-QR meets industry standards.
7.What is the process for return or replacement of BC817-16-QR?
All BC817-16-QR units undergo pre-shipment inspection (PSI). If there is an issue with BC817-16-QR, 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 BC817-16-QR part is unused and in its original packaging.
Return procedure for BC817-16-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-16-QR Tags
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MMBT3906LT1G
onsemi
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Diodes Incorporated
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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MMBTA06LT1G
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