Hey, I opened mine, and the transistors were marked, and I found a data sheet.
HIGH VOLTAGE FAST-SWITCHING
NPN POWER TRANSISTOR
n STMicroelectronics PREFERRED SALESTYPE
n NPN TRANSISTOR
n HIGH VOLTAGE CAPABILITY
n LOW SPREAD OF DYNAMIC PARAMETERS
n MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION
n VERY HIGH SWITCHING SPEED APPLICATIONS:
n ELECTRONIC BALLASTS FOR FLUORESCENT LIGHTING
The device is manufactured using high voltage
Multi Epitaxial Planar technology for high
switching speeds and medium voltage capability.
It uses a Cellular Emitter structure with planar
edge termination to enhance switching speeds
while maintaining the wide RBSOA.
The device is designed for use in lighting
applications and low cost switch-mode power
has a weird pin out
only 40 hfe
I'm guessing most of the tranies are something similar.
Is that still good for anyting?