SCR Gating Question?

[mikedmonds]

Dear Forum,
I am trying to figure out how much current to pulse an SCR gate with to turn it on?
It is a BT152-600R,127 20A SCR. The spec sheet says 32 mA max gate current, but does not list a minimum current. In another application, it appears that the gate is being pulsed with ~5x the max spec sheet current. Does anyone know how to do this, or is it not critical?
Thanks!
Mike

 

[ronsimpson]

Peak and Peak may not be the same thing.
From page 1 the peak gate current is 5A. That is the drop dead current.

From page 2 the gate trigger current is typically 3mA but it could be as high as 32mA and it could take as little as ?mA to trigger the gate.

In other words a 3mA gate current will trigger 50% of the parts. A gate current of 32mA will trigger 100% of the parts. In production I would hit it with 60mA.

There will be some parts that are happy with 1mA

 

[Sceadwian]

Some conditions on some parts.... the SCR triggering current is based on the effective Gate Cathode resistant AT LOAD CONDITIONS.
.

 

[mikedmonds]

Thanks guys!
I was trying to figure things out from a consolidated data sheet on the digikey website. It helps to have all of the data!
Best regards!
Mike