1N829UR-1

Diodes - Zener - Single

The 1N829UR-1 is a single Zener diode, a silicon semiconductor with a wide range of applications. The main purpose of the 1N829UR-1 is as a voltage-regulating device, where it allows current to pass from its anode to its cathode in one direction, and acts as a reverse barrier to current flow in the opposite direction. This enables it to maintain a steady, reliable voltage across its terminals, even when subject to wide fluctuations in current and ambient temperatures.

Zener diodes are valued for their efficient performance in many applications, such as power supplies, rectifying circuits, servo systems, and oscillator circuits. The 1N829UR-1 has a maximum reverse-bias voltage rating of 9 volts, with a 0.5 watt power rating up to 6 volts, and a 5 watt power rating up to 9 volts. It has a forward-bias voltage of 0.7 volts, with a capacitance of 3.2 pF when reverse-bias voltage is at 4 volts. This impressive performance is supported by a hermetic sealed package, with a pre-tinned bonding pad configuration for added thermal resistance and electrical contact.

The working principles of the 1N829UR-1 are straightforward. Current in DC (direct current) flows from the anode to the cathode and under heavy loads, the current flowing across the device will cause a voltage drop across it, as it does for any resistance in a circuit. The Zener diode has a usable range, which varies from its breakdown voltage, where the current is limited to only a few milliamps, up to its maximum reverse-bias voltage. If a voltage is applied that is higher than the breakdown voltage, the current will begin to increase exponentially, and the voltage will remain the same despite the increase in current. As the power is increased, the current will continue to increase, until it reaches the maximum reverse-bias voltage rating, at which point the current will remain constant.

This ability of Zener diodes to remain at a constant voltage even when current is increased is a valuable property in many applications. They are typically used to provide a steady voltage for developing a reference voltage for analog circuits, or for use as a power supply for digital circuits. The 1N829UR-1 is especially useful for sensitive electronic circuits, where the reverse-bias voltage can be varied with precise accuracy, allowing for a highly complex system to have precise voltage regulation.

The 1N829UR-1 is a high-performance, reliable single Zener diode for high-precision applications. Its wide range of performance, efficient power handling, and precise voltage regulating make it an ideal choice for circuits that need precise, reliable power delivery. The hermetic sealed package and bonded-pad configuration provide impressive thermal resistance, along with excellent electrical contact points for reliable connection.