onsemi Zener Diode 5.1 V Single 300 mW Surface Mount 2-Pin SOD-323 SZMM3Z5V1T1G

onsemi SZMM3Z5V1T1G Zener Diode is a high-reliability voltage regulator diode with a nominal Zener voltage of 5.1 V, designed for use in electronic circuits requiring precise voltage reference or regulation. This diode features a single element chip mounted in a surface mount SOD-323 package with 2 pins, optimized for efficient board space utilization.

This diode supports a steady-state power dissipation of 300 mW and operates reliably over a broad temperature range from -65°C to 150°C, making it suitable for harsh industrial, automotive, and consumer electronic environments. The compact dimensions of 2.7 mm length and 1 mm height, along with low body height of 0.035 inches (0.9 mm), enable its deployment in space-sensitive designs.

The device's construction includes a void-free, transfer-molded plastic case with corrosion-resistant external surfaces, ensuring durability and long-term performance. Its leads are plated with Pb/Sn or Sb only, ensuring a lead-free status compliant with environmental regulations. The diode meets automotive-grade reliability through AEC-Q101 certification and is capable of withstanding electrostatic discharge events rated at class 3 (>16 kV) according to the Human Body Model.

Applications include voltage regulation and voltage clamping for protecting sensitive electronic circuits in telecommunications, automotive electronics, and industrial control systems. The diode's polarity is clearly marked with a cathode band to assist in correct installation.

Nominal Zener voltage of 5.1 V ensures stable voltage regulation. Single element diode configuration designed for precision voltage clamping. Surface mount package type SOD-323 with 2-pin configuration for compact PCB layouts.

Maximum power dissipation rating of 300 mW for steady state operation. Operating temperature range from -65°C to 150°C suitable for automotive and industrial applications. Low body height of 0.035 inches supports space-constrained designs.

Corrosion resistant, void-free transfer-molded plastic case ensuring durability. Capable of withstanding ESD rating class 3 (>16 kV) per Human Body Model. Lead finish is Pb-Free (plated with Pb/Sn or Sb), meeting environmental and safety standards.

Automotive standard compliant with AEC-Q101 certification. Polarity indicated by a cathode polarity band for correct orientation.

This product is ideal for industrial, automotive, and electronics manufacturing use cases where precise and reliable voltage regulation is required. It contributes to enhanced circuit protection and stabilization in power supplies, voltage reference circuits, and signal conditioning applications.

Explore the full onsemi Zener Diode range and related semiconductor components in the Electronics & Electricals category at EnvMart.

Explore more products in our Zener Diodes category.