Transistors - Programmable Unijunction | 35 items

Keywords: , Transistors - Programmable Unijunction

Description: By screening transistors - programmable unijunction with . the eligible records: 35

Count: 35

Power Dissipation (Max)	Voltage - Output	Voltage - Offset (Vt)	Current - Valley (Iv)	Current - Peak	Package / Case
167mW 300mW	11V 1V 3V 5V 6V	1.6V 600mV	18mA 25µA 2mA 4mA 50µA 6mA	150nA 1µA 2µA 400nA	TO-206AA, TO-18-3 Metal Can TO-226-3, TO-92-3 (TO-226AA) TO-226-3, TO-92-3 (TO-226AA) (Formed Leads) TO-236-3, SC-59, SOT-23-3

Power Dissipation (Max)

Voltage - Output

Voltage - Offset (Vt)

Current - Valley (Iv)

Current - Peak

Package / Case

Ask: What is the main application of unijunction transistor?

Answer: The most common application of a unijunction transistor is as a triggering device for SCR's and Triacs but other UJT applications include sawtoothed generators, simple oscillators, phase control, and timing circuits. The simplest of all UJT circuits is the Relaxation Oscillator producing non-sinusoidal waveforms.

application, ujt
Ask: Why is programmable applied in put?

Answer: The PUT is similar to the unijunction transistor (UJT), but its intrinsic standoff ratio can be set by two external resistors. Hence, the name "programmable" is used.

put, programmable
Ask: What is unipolar junction transistor?

Answer: A Uni Junction Transistor (UJT) is a device that is formed with a single junction of p-type and the n-type of the semiconductor material. It resembles to that of the diode with a single junction of the P-N. It looks almost like that of the Junction Field Effect Transistor (JFET).

ujt, junction, junction, transistor
Ask: What is peak point and valley point in Ujt?

Answer: 2 shows the typical family of V_E /I_E characteristics of a UJT at different voltages between the bases. It is clear that peak-point voltage (=\u03b7V_BB+V_D) falls steadily with reducing V_BB and so does the valley-point voltage Vv.

ujt, peak, point, valley