QST4TR Overview

As dc = Ic/Ib, DC current gain is the ratio of base current to collector current, and DC current gain for this device is 270 @ 500mA 2V.Single BJT transistor means that Ic is at Single BJT transistors maximum value (saturated), so the vce saturation(Max) is equal to 250mV @ 30mA, 1.5A.Keeping the emitter base voltage at 6V can result in a high level of efficiency.Single BJT transistor contains a transSingle BJT transistorion frequency of 280MHz.When collector current reaches its maximum, it can reach 3A volts.

QST4TR Features

the DC current gain for this device is 270 @ 500mA 2V
the vce saturation(Max) is 250mV @ 30mA, 1.5A
the emitter base voltage is kept at 6V
a transition frequency of 280MHz

QST4TR Applications

There are a lot of ROHM Semiconductor QST4TR applications of single BJT transistors.

• Interface
• Inverter
• Muting
• Driver