

Overview
The BT151 is a thyristors (SCR), Module made by WEIDA in a TO-252 package with 3 pins. -40℃~+125℃ 1 SCR 1.5V 1.75V 120A 12A 30mA 500mW 800V TO-252 Thyristors (SCR)/Modules ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:BT151, from EasyEDA) and its footprint (EasyEDA_Cloud:TO-252-2_L6.6-W6.1-P4.57-LS10.1-BR-CW, from EasyEDA), ready for a KiCad board. 4,893 are in stock at JLCPCB (part C2900856). 6 open-source boards in 4 repositories on GitHub use it.
Symbol
Footprint
Parameters
10- Average Gate Power Dissipation (PG(AV))
- 500mW
- Current - Gate Trigger(Igt)
- 30mA
- Current - On State(It(RMS))
- 12A
- Current - Surge(Itsm@f)
- 120A
- Gate Trigger Voltage (Vgt)
- 1.5V
- Holding Current (Ih)
- 30mA
- Operating Temperature
- -40℃~+125℃
- Peak off - state voltage(Vdrm)
- 600V
- SCR Type
- One unidirectional thyristor
- Voltage - On State(Vtm)
- 1.75V
Order codes
1- BT151LCSC C2900856
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | K | Unspecified |
| 2 | A | Unspecified |
| 3 | G | Unspecified |
Open-source boards using it
All 6- 2 layers98 × 83.5 mm

- 2 layers28.7 × 31.5 mm

- 2 layers

- 2 layers

- 2 layers206.1 × 150.5 mm

- 2 layers140 × 70 mm

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Is there a KiCad symbol and footprint for the BT151?
Yes. The symbol is EasyEDA_Cloud:BT151 and the footprint EasyEDA_Cloud:TO-252-2_L6.6-W6.1-P4.57-LS10.1-BR-CW, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BT151?
TO-252, with 3 pins. Its footprint is drawn on this page.
Where is the BT151 datasheet?
WEIDA publishes it: the Datasheet link on this page opens it.
Where can I order the BT151?
JLCPCB lists it as part C2900856, with 4,893 in stock; the sellers' links on this page open their listings.
What can replace the BT151?
Parts like it in the library: the BT138-800E by WEIDA, the BT138S-800E by FUXINSEMI, the BT136-800D by WEIDA and the BT151S-500R,118 by WEIDA. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BT151?
6 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
6BT138-800E
TO-220B-40℃~+125℃ 1 TRIAC 1.3V 1.6V 120A 12A 500mW 60mA 800V TO-252 Thyristors (SCR)/Modules ROHSWEIDAThyristors (SCR)/ModulesBT138S-800E
TO-252-40℃~+125℃ 1.3V 1.55V 10mA 12A 30mA 500mW 800V 95A@50Hz TO-252 Thyristors (SCR)/Modules ROHSFUXINSEMIThyristors (SCR)/ModulesBT136-800D
TO-252-40℃~+125℃ 1 TRIAC 1.3V 1.7V 20mA 25A 25mA 4A 500mW 800V TO-252 Thyristors (SCR)/Modules ROHSWEIDAThyristors (SCR)/ModulesBT151S-500R,118
TO-252-40℃~+125℃ 1.5V 1.75V 120A 12A 15mA 30mA 500mW 650V One unidirectional thyristor TO-252 Thyristors (SCR)/Modules ROHSWEIDAThyristors (SCR)/ModulesBTB06-600CW
TO-252-40℃~+125℃ 1.5V 1.5V 1W 35mA 35mA 600V 60A 6A TO-252 Thyristors (SCR)/Modules ROHSWEIDAThyristors (SCR)/ModulesMCR12DCMT4G
TO-252(DPAK)Thyristors (SCR)/ModulesLittelfuse