VCDW1141CX-3B7C8-TR

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The VCDW1141CX-3B7C8-TR is a Unijunction Transistor (UJT) device manufactured by Vishay Semiconductor. It is part of the Vishay’s Discrete LED Indication family of products. The VCDW1641CX-3B7C8-TR is designed for use in a wide range of industrial, medical and audio-visual applications that require illuminating LEDs for display or warning purposes.

The VCDW1641CX-3B7C8-TR is a three-terminal device comprising a P-type semiconductor junction made with N-type epitaxial silicon. This junction is commonly referred to as an emitter-base junction (or trigger-base junction). One of the terminals, the emitter, is attached to the P-type portion of the junction while the two remaining terminals, the base and the collector, are connected to the N-type portion of the junction. The VCDW1641CX-3B7C8-TR is also equipped with an integrated current limiting resistor.

When an appropriate voltage is applied between the emitter and the base terminal, conduction occurs through the device. This is known as the UJT “triggering” or “trigger” state. In this state, current flows from the base to the emitter and the collector voltage, VCE, falls close to zero. Depending on the voltage and resistor dial settings, the UJT can provide a wide range of triggering voltages. When the external current is removed from the device, the UJT will automatically return to its non-triggering state.

The VCDW1641CX-3B7C8-TR is primarily used in LED indication applications. LEDs require a specific amount of current and voltage to light. This is where the VCDW1641CX-3B7C8-TR comes in. In LED applications, the UJT is used to provide the fixed base current to light the LED when the input voltage is applied. The device will also regulate the current flowing through the LED, thus allowing the LED to operate at a consistent level when powered.

The VCDW1641CX-3B7C8-TR can also be used in audio applications such as light show displays or for powering small speakers. In these applications, the UJT is used to convert a higher voltage into the required current for the speakers or LEDs. This allows the device to operate in a wide environment without the need for multiple power supplies or additional components.

In summary, the VCDW1641CX-3B7C8-TR is part of Vishay Semiconductor’s Discrete LED Indication family of products designed for a wide range of industrial, medical and audio-visual applications. The device is typically used to provide the fixed base current required to light LEDs or to power small speakers. It is capable of regulating the current flowing through the LED or speaker, allowing it to operate with a consistent level of illumination or output regardless of the input voltage.

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