2N5640 N-Channel JFET 30V @ 5mA - (AD36839)

Description:

If you've ever wondered how to control LEDs from a microcontroller, a JFET is what you need. This is a very common JFET with very low on-resistance and a control voltage (also known as gate voltage) that is compatible with any 3-5V microcontroller or mechanical switch. This allows you to control high-power devices with very low-power control mechanisms.

Data sheet