EVVO TTA1943 Voltage Regulator

The EVVO TTA1943 is a PNP Bipolar Junction Transistor (BJT) designed for high-power applications, particularly in audio amplifier output stages.
Key Specifications
According to the EVVO datasheet, the EVVO TTA1943 has the following specifications:
Polarity: PNP
Collector-Base Voltage (Vcb): -230 V
Collector-Emitter Voltage (Vce): -230 V
Emitter-Base Voltage (Veb): -5 V
Collector Current (Ic): -15 A
Collector Power Dissipation (Pc): 150 W (at Tc=25℃)
Junction Temperature (Tj): 150 ℃
Package Type: TO-3P (3-pin, through-hole mounting)
Transition Frequency (fT): 30 MHz (typical)
Application
The TTA1943 is primarily used in 100-W audio amplifier output stages. It is often used in a complementary pair with the NPN transistor TTC5200 (or its Toshiba equivalent 2SC5200) for these amplifier circuits.