Rutronik News

Replacement for obsolete components: Obsolete NPN Transistor BC817K from Infineon now from Diotec - available at Rutronik

Created by Emilia Mance |   Knowledge

The NPN Silicon AF Transistor BC817K from Diotec in a SOT-23 package is an equivalent substitute for the obsolete BC817K from Infineon.


With a power dissipation of 500mW, a high collector current of 500mA, a peak collector current of up to 1A as well as a high current gain between 100 (BC817K-16) and 630 (BC817K-40), measured at 100mA, the BC817K is ideal for all general AF applications.

The surface mount transistor has a low collector-emitter saturation voltage of 0,7V, measured with pulses of 300µs and a duty cycle below 2%. Its SOT-23 plastic case is RoHS compliant.

You will find more information on the BC817K on the e-commerce platform (where you can also place orders directly):

Contact Person (Rutronik):
Emilia Mance, Product Sales Manager Power Semiconductors
Tel: +49 7231 801-0
e-mail: Emilia.Mance(at)