MMBZ – reliable Zener diodes in compact packages for circuit protection

The MMBZ diode series consists of widely used Zener-type TVS (Transient Voltage Suppressor) diodes in a compact SMD package, primarily intended for voltage clamping and stabilization in various electronic circuits. With a broad range of breakdown voltages, from a few volts up to several tens of volts, these diodes enable precise voltage protection and regulation in both simple and advanced electronic systems. Their low profile and small dimensions make them ideal for surface mounting in modern, compact electronic devices where PCB space is critical. Moreover, the MMBZ series offers high reliability, stable parameters, and good thermal resistance, ensuring trouble-free operation over a wide temperature range.

Applications include protecting circuits against voltage surges, providing a constant reference voltage in regulators and stabilizers, and safeguarding signal and power lines against sudden voltage spikes. These properties make them widely used in consumer electronics, automotive systems, telecommunications, and industrial automation.

Key features of the MMBZ series:

• Diode type: TVS (Transient Voltage Suppressor) diode.
• Package: Small SMD (Surface-Mount Device) package, SOT-23 — ideal for modern, compact electronics.
• Operating voltage: Available in a wide range (e.g., ~6.46 V to 26 V), depending on the model.
• Fast response: Immediate action on voltage spikes — protects circuits from surges and transients.
• Low capacitance: Minimal parasitic capacitance allows use in high-speed signal lines without interference.
• Applications: IC surge protection, small circuit voltage stabilization, I/O port protection, noise suppression.
• Variant suffixes (A, VA, VAL): Indicate differences in voltage tolerance, power rating, temperature characteristics, or compliance with specific standards.
• Operating temperature range: Typically −55 °C to +150 °C.

Typical uses:

• Voltage clamping in electronic circuits
• Reference voltage stabilization
• Surge protection in signal and power lines
• Power supplies and voltage regulators
• ESD and transient protection systems

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