Overview
The 2SC945 is a bipolar made by Jiangsu Changjing Electronics Technology (CJ) in a SOT-23 package with 3 pins. -55℃~+150℃ 1 NPN 100nA 130 150MHz 150mA 200mW 300mV 50V 5V NPN SOT-23 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, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2991935).
Symbol
Footprint
Parameters
12- Collector - Emitter Voltage VCEO
- 50V
- Configuration
- Standalone
- Current - Collector Cutoff
- 100nA
- Current - Collector(Ic)
- 150mA
- DC Current Gain
- 130
- Emitter-Base Voltage(Vebo)
- 5V
- Number
- 1 NPN
- Operating Temperature
- -55℃~+150℃
- Pd - Power Dissipation
- 200mW
- Transition frequency(fT)
- 150MHz
- Vce Saturation(VCE(sat))
- 300mV
- type
- NPN
Order codes
1- 2SC945LCSC C2991935
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | E | Passive |
| 3 | C | Passive |
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<iframe src="https://pcbkit.io/embed/parts/cj/2SC945" title="2SC945 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/cj/2SC945.jpg" alt="2SC945" width="1200" height="900">[](https://pcbkit.io/parts/cj/2SC945)Questions
Is there a KiCad symbol and footprint for the 2SC945?
Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 2SC945?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the 2SC945 datasheet?
Jiangsu Changjing Electronics Technology (CJ) publishes it: the Datasheet link on this page opens it.
Where can I order the 2SC945?
JLCPCB lists it as part C2991935, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 2SC945?
Parts like it in the library: the MMBT3904 by hongjiacheng, the S8050 by hongjiacheng, the SS8050 by hongjiacheng and the MMBT5551 by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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