![Leshan-Radio](/logo/Leshan-Radio.png)
Leshan Radio Company
Digital transistors (built-in resistors)
![Rectron](/logo/Rectron.png)
Rectron Semiconductor
SOT-23 DIGITAL TRANSISTOR TRANSISTORS(NPN)
![NXP](/logo/NXP.png)
NXP Semiconductors.
NPN resistor-equipped transistors; R1 = 22 kΩ, R2 = 22 kΩ
![ROHM](/logo/ROHM.png)
ROHM Semiconductor
NPN 100mA 50V Digital Transistors (Bias Resistor Built-in Transistors)