My Inquiry
My Account
Diodes Incorporated BC817-16W-7
- Part No.:
- BC817-16W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC817-16W-7.pdf
- Description:
- TRANS NPN 45V 0.5A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:2,760
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC817-16W-7 from Diodes Incorporated is a 45 V, 500 mA NPN small-signal transistor in SOT323 package, featuring hFE = 100–250 at IC = 100 mA, VCE(SAT) ≤ 700 mV at IC = 500 mA/IB = 50 mA, and fT = 100 MHz - used in automotive-grade switching and audio-frequency amplification circuits.
For engineers reviewing the BC817-16W-7 datasheet, BC817-16W-7 pinout, BC817-16W-7 application, or BC817-16W-7 equivalent, key selection criteria include DC current gain binning (16W = 100–250), thermal resistance (RθJA = 625 °C/W), AEC-Q101 qualification, SOT323 mechanical compatibility, and complementary PNP pairing with BC807-16W.
Technical Context
This NPN bipolar junction transistor employs epitaxial planar die construction for stable gain and low leakage. It operates with VCEO = 45 V, IC = 500 mA continuous, and supports pulsed base drive up to IBM = 200 mA - enabling reliable on/off control in 24 V automotive load switches and low-voltage logic-level interfaces.
Its 100 MHz fT and low CCBO = 12 pF support AF amplifier stages up to ~10 kHz with minimal phase shift. The device is qualified to AEC-Q101, with ESD HBM = 4 kV and moisture sensitivity level 1 - confirming suitability for reflow-soldered automotive PCBs without special handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - maximum collector-emitter voltage before breakdown; sets safe operating range in 24 V automotive and 3.3/5 V logic interface applications |
| hFE (IC = 100 mA) | 100–250 - current gain binning defines base drive sizing; 16W grade enables predictable 5–10 mA base current for 500 mA collector switching |
| VCE(SAT) | ≤ 700 mV @ IC = 500 mA / IB = 50 mA - ensures < 0.35 W conduction loss in high-duty-cycle switching |
| fT | 100 MHz - usable bandwidth for audio preamplifier gain stages and fast digital signal conditioning up to ~10 kHz |
| RθJA | 625 °C/W - thermal limit requires minimum copper pour on FR4; derates to ~125 mW at +85°C ambient |
| ESD HBM | 4,000 V - withstands standard handling in non-classified assembly environments without additional protection circuitry |
Pinout & Package
SOT323 plastic surface-mount package: 3-terminal, lead-free matte tin-plated leads, UL 94V-0 rated molding compound, 0.006 g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-side return path; must handle full load current and provide reference for base bias network |
| 2 (Base) | Control input | Receives current-limited drive (typically 5–50 mA); requires series resistor to prevent overdrive and thermal runaway |
| 3 (Collector) | Current source terminal | Switches positive rail or load supply; layout must minimize trace inductance for fast turn-off in PWM applications |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in body control modules and lighting drivers without additional qualification |
| Complementary PNP pairing | Direct match with BC807-16W - simplifies push-pull output stage design and reduces BOM count in dual-rail amplifier circuits |
| Lead-free & halogen-free | Meets RoHS 2 and "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb) - compliant with EU automotive material declarations and end-of-life recycling mandates |
| Automated insertion compatible | SOT323 footprint and marking (K6A) support high-yield pick-and-place and AOI inspection in volume production lines |
Applications
| Automotive Interior Lighting Control | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving LED strings in door courtesy lights and map lamps using PWM from MCU GPIO. IC Role / Device Role / Timing Role: Low-side switch controlling current path to ground; handles 350 mA peak LED current with <1 µs turn-on delay. Use Value: VCE(SAT) ≤ 700 mV minimizes power loss and self-heating during 100% duty cycle operation in confined lamp housings. | Use Scenario: Amplifying millivolt-level thermistor or bridge sensor outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Common-emitter DC amplifier stage with fixed bias; provides 20–50× gain before ADC input. Use Value: hFE binning (100–250) ensures consistent gain across production batches without per-unit calibration. |
| Consumer Audio Preamp Stage | Smart Home Relay Driver Interface |
Use Scenario: Boosting line-level audio signals (200 mV–1 V) prior to Class AB power amplifier input. IC Role / Device Role / Timing Role: Voltage amplifier with emitter degeneration; operates in linear region with VCE ≈ 3–5 V DC bias. Use Value: fT = 100 MHz ensures flat frequency response up to 20 kHz with <0.1 dB ripple and low harmonic distortion. | Use Scenario: Interfacing 3.3 V microcontroller outputs to 12 V/24 V electromechanical relay coils. IC Role / Device Role / Timing Role: Digital switch translating logic-high to coil energization; driven by open-drain GPIO with pull-up. Use Value: IC = 500 mA rating safely covers relay inrush currents (up to 400 mA) while maintaining saturation under temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC817-16LT1G (ON Semiconductor) | SOT-23 package (not SOT323); RθJA = 405 °C/W; hFE min = 100 at IC = 10 mA | Higher thermal performance but different footprint - requires PCB redesign and requalification for automotive use | Select only if board space allows SOT-23 and thermal margin exceeds 625 °C/W requirement |
| MMBT3904LT1G (ON Semiconductor) | Lower VCEO = 40 V; hFE = 100–300; no AEC-Q101 qualification | Not approved for automotive systems; suitable for consumer-grade relay drivers where reliability testing is not mandated | Use only in non-automotive industrial or commercial designs lacking AEC-Q101 compliance requirements |
Compared with BC817-16W-7, BC817-16LT1G offers better thermal dissipation but demands layout change, while MMBT3904LT1G sacrifices automotive qualification and voltage margin for broader hFE spread - making BC817-16W-7 optimal for cost-sensitive, AEC-Q101–compliant SOT323 implementations.
Availability
BC817-16W-7 is available at Aetrix Electronics and suitable for automotive interior lighting control, industrial sensor signal conditioning, and smart home relay driver interfaces requiring stable component supply and long-term lifecycle support.
Supply support for BC817-16W-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the US.
The BC817 series belongs to Diodes' AEC-Q101–qualified small-signal transistor product line, engineered specifically for automotive body electronics and industrial control applications demanding high reliability in compact SOT323 packaging.
FAQ
What is the maximum continuous collector current for BC817-16W-7?
The BC817-16W-7 supports 500 mA continuous collector current (IC) at TA = +25°C. Derating applies above +25°C: at +85°C ambient, maximum IC drops to approximately 250 mA due to its 625 °C/W thermal resistance and 200 mW power dissipation limit.
Is BC817-16W-7 suitable for automotive applications?
Yes - BC817-16W-7 is fully qualified to AEC-Q101 standards, including temperature cycling, humidity bias, and ESD testing. Its SOT323 package, lead-free/Green construction, and 4 kV HBM ESD rating meet Tier-1 automotive supplier requirements for body electronics and lighting modules.
How does the hFE binning of "16W" differ from "25W" or "40W" variants?
The "16W" suffix denotes hFE = 100–250 at IC = 100 mA/VCE = 1 V; "25W" is 160–400, and "40W" is 250–600. This binning enables precise base resistor selection - e.g., a 16W device requires ~10 mA base drive for 500 mA collector current, whereas a 40W may saturate with ≤5 mA.
Can BC817-16W-7 replace BC847B in existing designs?
No - BC847B uses SOT23 package (different pinout and thermal profile) and has VCEO = 50 V but lower IC = 100 mA. Substituting BC817-16W-7 requires verifying PCB pad layout compatibility, recalculating base resistors for higher hFE, and validating thermal performance at 500 mA load conditions.
BC817-16W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 100mA, 1V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC817-16W-7 FAQ
1.How can I place an order for BC817-16W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-16W-7 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-7 reliable?
The price and inventory of BC817-16W-7 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-7 is usually 5 days.
3.What payment methods are accepted for BC817-16W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-16W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-16W-7?
BC817-16W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-16W-7 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-7?
For technical support, including BC817-16W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-16W-7 requirements.
6.How does Aetrix verify that BC817-16W-7 is sourced from the original manufacturer or authorized distributors?
All BC817-16W-7 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-7 meets industry standards.
7.What is the process for return or replacement of BC817-16W-7?
All BC817-16W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BC817-16W-7, 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-7 part is unused and in its original packaging.
Return procedure for BC817-16W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-16W-7 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
