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Diodes Incorporated BC847CW-7-F
- Part No.:
- BC847CW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847CW-7-F.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:57,571
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Product details
Overview
BC847CW-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT323 package, rated for 45 V VCEO, 100 mA IC, and featuring hFE = 420–800 (Band C), optimized for switching and audio-frequency amplification in space-constrained PCBs.
For engineers reviewing the BC847CW-7-F datasheet, BC847CW-7-F pinout, BC847CW-7-F application, or BC847CW-7-F equivalent, key selection criteria include DC current gain group (C-band), VCE(sat) at 10 mA/0.5 mA drive, thermal derating above 25°C, and SOT323 footprint compatibility with automated placement.
Technical Context
This transistor operates as a general-purpose NPN switch or linear amplifier with fixed-emitter biasing topology. Its high hFE band (420–800) enables low-base-drive designs, while fT ≥ 100 MHz supports AF to low-RF signal handling up to ~100 kHz switching with minimal storage delay.
Thermal performance is defined by RθJA = 625°C/W on minimum pad layout, requiring ambient derating above 25°C per Figure 1. ESD robustness includes 4 kV HBM and 1 kV CDM ratings, supporting handling in standard assembly environments without special precautions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown under active switching conditions |
| IC | 100 mA - Continuous collector current limit defining safe linear or saturated operation |
| hFE (Band C) | 420–800 - High DC current gain enabling microampere-level base drive for 10 mA load |
| VCE(sat) | 90–250 mV @ IC=10 mA/IB=0.5 mA - Low saturation voltage reduces power loss in digital switching |
| fT | 100–300 MHz - Gain-bandwidth product confirming suitability for audio amplification and fast-switching applications |
| RθJA | 625 °C/W - Thermal resistance limiting usable power dissipation to ≤200 mW at 25°C ambient |
| ESD HBM | 4,000 V - Human Body Model rating allowing direct handling without dedicated ESD workstations |
Pinout & Package
Package: SOT323 - Surface-mount plastic package measuring 2.15 mm × 2.10 mm × 0.95 mm, with matte tin-plated leads compliant with MIL-STD-202 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; defines reference for VBE and IC control |
| 2 (Base) | Control input | Receives forward-biased current to modulate collector current; requires series resistor for current limiting |
| 3 (Collector) | Current source terminal | Delivers amplified output current to load; must be biased above emitter by ≥0.3 V for saturation |
Key Features
| Feature | Design Value |
|---|---|
| High hFE Band C | 420–800 gain range reduces required base drive current by >2× versus Band A/B variants |
| SOT323 footprint | 0.65 mm pitch and 2.15 mm × 2.10 mm body enable high-density routing in portable and IoT PCBs |
| Lead-free & Green | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets RoHS 3 and automotive green standards |
| Automated insertion ready | Flat lead geometry and consistent marking (K1M) support reliable pick-and-place accuracy at >99.9% yield |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs with limited sourcing capability. IC Role / Device Role / Timing Role: NPN switch providing current amplification and level translation between logic and load. Use Value: VCE(sat) ≤ 250 mV ensures LED forward voltage remains fully utilized, minimizing wasted power and heat rise. | Use Scenario: Adding discrete logic-level switching capability to resource-constrained microcontrollers lacking sufficient GPIO drive strength. IC Role / Device Role / Timing Role: Digital buffer and current booster for driving relays, solenoids, or optocouplers. Use Value: hFE ≥ 420 allows 20 µA base current to reliably switch 10 mA loads, reducing MCU port loading. |
| Audio Pre-amplifier Stage | Power Supply Enable Control |
Use Scenario: Low-noise voltage amplification of microphone or sensor signals in battery-powered wearables. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with bias network setting Q-point for linearity. Use Value: NF ≤ 10 dB at 1 kHz and fT ≥ 100 MHz preserve signal fidelity across 20 Hz–20 kHz bandwidth. | Use Scenario: Enabling/disabling auxiliary power rails (e.g., 5 V USB peripherals) using a 1.8 V or 3.3 V system controller. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS gate drive or LDO EN pin. Use Value: VCEO = 45 V provides 2× margin over typical 24 V industrial rails, ensuring long-term reliability. |
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 |
|---|---|---|---|
| BC847C-7-F | Same electrical specs but in SOT23 package (larger footprint, higher RθJA = 450°C/W) | Less suitable for ultra-dense layouts; better thermal margin at same IC | Select when board space permits and higher power dissipation (>200 mW) is needed |
| MMBT3904LT1G | Lower hFE (100–300), higher VCE(sat) (300 mV typ), same SOT323 package | Requires higher base drive; less efficient in low-power switching | Select when cost sensitivity outweighs gain and saturation voltage requirements |
Compared with BC847CW-7-F, BC847C-7-F offers improved thermal performance at the expense of PCB area, while MMBT3904LT1G trades gain and efficiency for broader supply-chain availability and lower unit cost in non-critical switching roles.
Availability
BC847CW-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, audio pre-amplifier stages, and power supply enable control requiring stable component supply and guaranteed RoHS-compliant sourcing.
Supply support for BC847CW-7-F 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, manufacturing, and sales operations across Asia, Europe, and North America.
The BC846AW–BC848CW series targets cost-sensitive, high-volume applications in consumer, computing, and industrial electronics where reliability, automated assembly compatibility, and environmental compliance are mandatory.
FAQ
What is the maximum operating temperature for BC847CW-7-F?
The BC847CW-7-F has an operating junction temperature range of –65°C to +150°C. Derating begins at +25°C ambient, with power dissipation dropping linearly to zero at +150°C per Figure 1 in DS30250 Rev. 16-2. The SOT323 package's RθJA = 625°C/W defines this relationship on standard FR4 PCBs.
Is BC847CW-7-F pin-compatible with BC847B variants?
Yes - all BC847x variants (A/B/C) share identical SOT323 pinout (Emitter-Base-Collector on pins 1–2–3) and mechanical dimensions. Only electrical parameters differ: hFE band (C = 420–800 vs. B = 200–450), VCE(sat), and fT vary per grade, but no layout change is needed for substitution.
Does BC847CW-7-F meet AEC-Q101 requirements?
No - BC847CW-7-F is not AEC-Q101 qualified. It is a commercial-grade part. For automotive applications, Diodes offers AEC-Q101 versions under separate part numbers (e.g., BC847CWQ-7-F), which undergo additional stress testing and are manufactured in IATF 16949-certified facilities.
What does the 'K1M' marking on BC847CW-7-F indicate?
The top-side marking 'K1M' identifies the device as BC847CW-7-F: 'K1' denotes the BC847CW type, and 'M' is the year code for 2024 per Diodes' date code system (L = 2023, M = 2024). This marking appears on the package body adjacent to the cathode band indicator.
BC847CW-7-F 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):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 20nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 420 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847CW-7-F FAQ
1.How can I place an order for BC847CW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847CW-7-F 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 BC847CW-7-F reliable?
The price and inventory of BC847CW-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CW-7-F is usually 5 days.
3.What payment methods are accepted for BC847CW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847CW-7-F?
BC847CW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847CW-7-F 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 BC847CW-7-F?
For technical support, including BC847CW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CW-7-F requirements.
6.How does Aetrix verify that BC847CW-7-F is sourced from the original manufacturer or authorized distributors?
All BC847CW-7-F 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 BC847CW-7-F meets industry standards.
7.What is the process for return or replacement of BC847CW-7-F?
All BC847CW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC847CW-7-F, 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 BC847CW-7-F part is unused and in its original packaging.
Return procedure for BC847CW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847CW-7-F Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
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MMBT2222ALT1G
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