Silicon LED ?

[Phil Allison]

** See ABSE for pics of a silicon NPN transistor chip emitting light.

No trickery involved.

The type is a 2N3439 ( high voltage NPN in TO5 pack)




...... Phil

 

[Mik DaDik]

Phil Allison wrote:

** See ABSE for pics of a silicon NPN transistor chip emitting light.

No trickery involved.

The type is a 2N3439 ( high voltage NPN in TO5 pack)




..... Phil

We used to cut the lid off BC108 transitors and see purple light (way
way way before blue LEDs came on the scene) this would be 35 years ago.

Mik