The CRY82 is a Zener diode manufactured by Toshiba Semiconductor and Storage. Zener diodes are silicon semiconductor devices that allow current to flow in either a forward or reverse direction. However, they are specifically designed to reliably allow current to flow in the reverse direction when a certain voltage, known as the Zener voltage, is reached. This makes them ideal for voltage regulation and protection circuits.

Applications:

• Voltage Regulation: Maintaining a stable voltage in electronic circuits.
• Overvoltage Protection: Protecting sensitive components from voltage spikes.
• Clipping Circuits: Shaping waveforms by limiting voltage levels.
• Voltage Shifting: Shifting a DC voltage level to a different value.
• Reference Voltage: Providing a stable voltage reference for circuits.

Features:

• Zener Voltage: Precisely defined reverse breakdown voltage. For the CRY82 the Zener voltage is typically 8.2V.
• Low Reverse Leakage Current: Minimizes current flow when the diode is reverse biased below the Zener voltage.
• High Surge Current Capability: Withstands transient voltage spikes without damage.
• Small Package Size: Suitable for high-density circuit board designs.
• Fast Response Time: Quickly clamps voltage spikes to protect downstream components.

Benefits:

• Precise Voltage Regulation: Provides a stable output voltage, improving circuit performance.
• Effective Overvoltage Protection: Prevents damage to sensitive electronic components.
• Compact Design: Saves board space in miniaturized electronic devices.
• Reliable Performance: Consistent operation over a wide temperature range.
• Cost-Effective Solution: Provides a simple and inexpensive way to protect circuits.

The CRY82 Zener diode is commonly used in power supplies, communication equipment, and industrial control systems. It is available in various surface-mount packages. Key specifications include the Zener voltage (VZ), reverse leakage current (IR), and power dissipation (PD). The Zener voltage for the CRY82 is around 8.2V, as the name suggests, which needs to be verified with the datasheet, with tolerances typically around ±5%. Reverse leakage current is the current that flows through the diode when it is reverse biased below the Zener voltage; a lower value indicates better performance. Power dissipation is the maximum power that the diode can safely dissipate without being damaged. The diode’s ability to handle surge currents, characterized by its surge current rating, ensures reliable protection against transient voltage spikes. The operating temperature range specifies the temperature range within which the diode maintains its performance characteristics, usually from −55°C to +150°C.