Toshiba CMZB Series Zener Diodes Surge Protection Of Power Lines - CMZB39A

Protect your sensitive electronic equipment from voltage surges with the Toshiba CMZB39A Zener Diode. Designed specifically for power line surge protection, this diode offers a reliable and cost-effective solution to safeguard your valuable assets against transient voltage events.

Key Benefits

• Superior Surge Protection: The CMZB39A effectively clamps voltage spikes, preventing damage to downstream components caused by lightning strikes, inductive load switching, and other power line disturbances.
• Enhanced Reliability: Built with Toshiba's renowned quality and precision, the CMZB39A ensures long-term, dependable performance in demanding environments.
• Cost-Effective Solution: Provides a robust protection mechanism without requiring complex and expensive circuitry. A simple and efficient way to enhance system resilience.
• Compact Footprint: Its small size allows for easy integration into existing designs and minimizes board space requirements.
• Improved System Uptime: By preventing damage from surges, the CMZB39A helps to minimize downtime and maintenance costs associated with equipment failure.

• The Toshiba CMZB33A Zener Diode is an ideal choice for protecting a wide range of applications, including:

• Power Supplies
• Industrial Equipment
• Telecommunications Systems
• Consumer Electronics

Key Features

Surge Protection From Switching Surges and Overvoltage Pulses with Long Pulse Width And Characteristics Close to DC.

The new products feature protection not only against transient overvoltage pulses, but also against overvoltage pulses with long pulse width and characteristics close to DC, which are difficult for ESD protection diodes to handle. In power lines of equipment, switching surges with long pulse widths of up to milliseconds may be generated when the circuit switches. The new products help protect semiconductor devices from switching surges and overvoltage close to DC.

Zener Voltage For Major Power Lines: V_Z (typ.)=12V to 51V

With a wide lineup of Zener voltages ranging from 12V to 51V, the lineup supports a variety of applications, including consumer and industrial equipment.

Specification Range of High-Precision Zener Voltage: ±5% (typ.)

With a planar structure enabling fine-tuning of the process, the new products improve the Zener voltage specification range of Zener voltage (typ.) from ±10% to ±5% compared to the existing CMZBxx series. This allows for design within a narrower voltage range, making it easier to select components and adjust circuit constants, thereby contributing to simplified equipment design.

Low Reverse Current: I_R (max)=0.5μA

Since Zener diodes are typically connected to power lines continuously, lower reverse current helps lower power consumption during standby. By protecting the PN junction with an oxide film through a planar structure, the CMZBxxA series achieves a low reverse current of 0.5μA (max), compared to 10μA for the existing CMZBxx series. This contributes to low power consumption in equipment.

DATA SHEET