BB 689 E7902

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Diodes color the world of electronics by allowing the controlled passage of current in just one direction. In some cases, these diodes can also serve opaquely to limit current passage. Diodes are used in both analog and digital circuits, and often act as a switch, gate, or amplifier. Variable capacitance diodes, also referred to as varicaps, varactors, or tuning diodes, are especially useful in controlling how much current flows through a circuit. One such diode is the BB 689 E7902, and this article will discuss its working principle, application field, and features.

The BB 689 E7902 is a two terminal device consisting of an anode, cathode, and rear gate oxide. When the anode current is supplied, the charge carriers diffuse in small amounts between the anode and the gate oxide. The amount of charge injected is determined by the gate voltage, and thus the static capacitance can be varied by adjusting the gate voltage. This gives the diode its variable capacitance property.

The BB 689 E7902 is primarily used in the telecommunications industry, where it specifically serves as a high-dynamic-range tuning resistor for use in RF circuits. In terms of its application field, the diode may be used for tuning and harmonic filters, frequency multiply circuits, low noise amplifiers, and voltage-controlled oscillators.

The BB 689 E7902 is a silicon based semiconductor device, and as such offers electrical properties such as a low-capacitive reaction and a high-speed transient response. This diode features an operating temperature range of -60 to +125 degrees Celsius and an operating voltage range of -20 to +60 volts. The component is also very small in size, has a low ESR value, and a reliable bi-directional current capability.

All in all, the BB 689 E7902 variable capacitance diode is a significant component in the telecommunications industry. Its usage most commonly ranges from low noise amplifiers to frequency multiply circuits to voltage-controlled oscillators. With its excellent electrical properties and its small size, the diode is sure to be an excellent addition to any RF circuit.

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