bt258-500r transistor of datasheet pdf

BT258-500R
Manufacturer : Semiconductors
Description : Thyristors logic level

BT258-500R
Manufacturer : Philips Semiconductors
Description : Thyristors logic level(???????????)

BT258-500R
Manufacturer : Philips Semiconductors
Description : Thyristors logic level

BT258-500R
Manufacturer : Philips
Description : Thyristors logic level