Blog Post: Power Tips: How to design a robust series linear regulator with discrete components.Draw circuits and learn electronics with Circuit Scribe, now 16% off.Other data sheets are available within the file: N3906 Related articles across the web SMALL LOAD SWITCH TRANSISTOR WITH HIGH GAIN AND LOW SATURATION VOLTAGE WELL SUITABLE FOR TV AND HOME APPLIANCE EQUIPMENTĢ. Collector to Emitter Voltage: Vceo = – 40 Vħ. Collector to Base Voltage: Vcbo = – 60 VĢ. Featuresġ. SILICON EPITAXIAL PLANAR NPN TRANSISTORĢ. TO-92 PACKAGE SUITABLE FOR THROUGH-HOLE PCB ASSEMBLYġ. Both transistors are commonly used in low-power switching and amplification applications, but the choice between them depends on the polarity requirements of the circuit. The 2N3906 is a PNP transistor used in circuits that require a negative voltage bias, while the 2N3904 is an NPN transistor used in circuits that require a positive voltage bias. The base region of a PNP transistor is doped with a material that has more electrons than the emitter or collector regions. To turn on the transistor, a small current is applied to the base, which allows a larger current to flow from the emitter to the collector.

In a PNP transistor, the current flows from the collector to the emitter.

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