4 layers85 × 50 mm
OpenHap
kenyattaejones32-boop/AQM
Open-source hardware design for OpenHAP, an ESP32-based air quality monitor with CO sensing, thermistor temperature input, USB-C charging, and cellular data upload.
269 parts
BCW71
onsemiExtended
-55℃~+150℃ 1 NPN 100uA 110 250mV 330MHz 350mW 45V 500mA 5V NPN SOT-23-3 Bipolar (BJT) ROHS
- Part id
- onsemi/BCW71
- Category
- Bipolar (BJT)
- Package
- SOT-23-3
- Pins
- 3
- In stock
- 0 at JLCPCB (C890258)
- Used on
- 2 open-source boards
Overview
The BCW71 is a bipolar made by onsemi in a SOT-23-3 package with 3 pins. -55℃~+150℃ 1 NPN 100uA 110 250mV 330MHz 350mW 45V 500mA 5V NPN SOT-23-3 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2E_3C, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C890258). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
5- Collector-emitter, most
- 45 V · collector-emitter voltage, absolute max · p. 2
- Collector current, most
- 500 mA · continuous collector current at TA = 25°C, absolute max · p. 2
- Junction, hottest
- 150 °C · operating junction temperature, absolute max · p. 2
- Junction to air (SOT-23)
- 357 K/W · junction to ambient, FR-4 PCB 40 mm X 40 mm X 1.5 mm, max · p. 2
- Current gain, least
- 110 · DC current gain, IC = 2.0 mA, VCE = 5.0 V, min · p. 3
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | E | Passive |
| 3 | C | Passive |
Open-source boards using it
2- 2 layers82 × 62.4 mm
Kaarten shieter
ThomasKramp/kaarten_shieter
The PDF was generated using: - The PDF version of the .md file . - An online md to pdf converter
90 parts
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Questions
Is there a KiCad symbol and footprint for the BCW71?
Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C and the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BCW71?
SOT-23-3, with 3 pins. Its footprint is drawn on this page.
Where is the BCW71 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the BCW71?
JLCPCB lists it as part C890258, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BCW71?
Parts like it in the library: the S9013 J3 by TDSEMIC, the STR1550 by STMicroelectronics, the BCV71 by onsemi and the FJV42MTF by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BCW71?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.