
Overview
The BD678 is a darlington Transistor made by ISC in a TO-126 package with 3 pins. TO-126 Darlington Transistors ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:BD680_C5128766, from EasyEDA) and its footprint (EasyEDA_Cloud:TO-126-3_L7.6-W2.7-P2.30-L, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C491408).
Symbol
Footprint
Parameters
8- Collector - Emitter Voltage VCEO
- 60V
- Current - Collector Cutoff
- 2mA, 200uA
- Current - Collector(Ic)
- 4A
- DC Current Gain
- 750
- Emitter-Base Voltage VEBO
- 5V
- Pd - Power Dissipation
- 40W
- Vbe On(VBE(on))
- 2.5V
- Vce Saturation(VCE(sat))
- 2.5V
Order codes
1- BD678LCSC C491408
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | Emitter | Unspecified |
| 2 | Collector | Unspecified |
| 3 | Base | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/isc/BD678" title="BD678 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/isc/BD678.jpg" alt="BD678" width="1200" height="900">[](https://pcbkit.io/parts/isc/BD678)Questions
Is there a KiCad symbol and footprint for the BD678?
Yes. The symbol is EasyEDA_Cloud:BD680_C5128766 and the footprint EasyEDA_Cloud:TO-126-3_L7.6-W2.7-P2.30-L, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BD678?
TO-126, with 3 pins. Its footprint is drawn on this page.
Where is the BD678 datasheet?
ISC publishes it: the Datasheet link on this page opens it.
Where can I order the BD678?
JLCPCB lists it as part C491408, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BD678?
Parts like it in the library: the 2N6036 by ISC, the 2N6039 by ISC, the MJE700 by onsemi and the BD681 by YFW. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
52N6036
TO-126TO-126 Darlington Transistors ROHSISCDarlington Transistors2N6039
TO-126100uA 2.8V 3V@4A,40mA 4A 4V 5V 80V NPN TO-126 Darlington Transistors ROHSISCDarlington TransistorsMJE700
TO-126-55℃~+150℃ 100uA 2.5V 2.5V 40W 4A 5V 60V 750 PNP TO-126 Darlington TransistorsonsemiDarlington TransistorsBD681
TO-126Darlington TransistorsYFWBD680
TO-263TO-263 Darlington Transistors ROHSISCDarlington Transistors