

Overview
The 2SC4738 is a bipolar made by CBI in a SOT-523 package with 3 pins. 1 NPN 100mW 100nA 150mA 250mV 50V 5V 700 80MHz NPN SOT-523 Bipolar (BJT) ROHS.
PCBKit's library has its footprint (Package_TO_SOT_SMD:SOT-523, from KiCad's library), ready for a KiCad board. 2,871 are in stock at JLCPCB (part C51315076). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
The library has no symbol for this part yet.
Footprint
Parameters
10- Collector - Emitter Voltage VCEO
- 50V
- Current - Collector Cutoff
- 100nA
- Current - Collector(Ic)
- 150mA
- DC Current Gain
- 700
- Emitter-Base Voltage(Vebo)
- 5V
- Number
- 1 NPN
- Pd - Power Dissipation
- 100mW
- Transition frequency(fT)
- 80MHz
- Vce Saturation(VCE(sat))
- 250mV
- type
- NPN
Order codes
1- 2SC4738LCSC C51315076
Open-source boards using it
All 2- 2 layers148 × 110 mm

- 2 layers133.4 × 50 mm

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<iframe src="https://pcbkit.io/embed/parts/cbi/2SC4738" title="2SC4738 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/cbi/2SC4738.jpg" alt="2SC4738" width="1200" height="900">[](https://pcbkit.io/parts/cbi/2SC4738)Questions
Is there a KiCad symbol and footprint for the 2SC4738?
Yes. the footprint Package_TO_SOT_SMD:SOT-523, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 2SC4738?
SOT-523, with 3 pins. Its footprint is drawn on this page.
Where is the 2SC4738 datasheet?
CBI publishes it: the Datasheet link on this page opens it.
Where can I order the 2SC4738?
JLCPCB lists it as part C51315076, with 2,871 in stock; the sellers' links on this page open their listings.
What can replace the 2SC4738?
Parts like it in the library: the 2SC4617TLR by ROHM Semiconductor, the 2SC4617R by Shikues, the MMBT5401T by CBI and the MMBT5551T by CBI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the 2SC4738?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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