Overview
The SZMMBZ18VALT1G is a dual monolithic silicon Zener diode produced by onsemi, designed for applications requiring transient overvoltage protection capability. These devices are intended for use in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, and medical equipment. The dual junction common anode design allows for the protection of two separate lines using only one package, making them ideal for situations where board space is limited.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Working Peak Reverse Voltage | VRWM | 14.5 | V |
| Breakdown Voltage @ IT | VBR | 17.10 - 18.90 | V |
| Maximum Reverse Leakage Current @ VRWM | IR | 50 | nA |
| Maximum Reverse Peak Pulse Current | IPP | 1.0 | mA |
| Clamping Voltage @ IPP | VC | 15.3 | V |
| Peak Power Dissipation @ 1.0 ms | Ppk | 24 or 40 | W |
| ESD Rating (Human Body Model) | - | > 16 kV | - |
| ESD Rating (Machine Model) | - | > 400 V | - |
| ESD Rating (IEC61000-4-2 Level 4) | - | ±30 kV Contact Discharge | - |
| Package Type | - | SOT-23 | - |
| Maximum Case Temperature for Soldering | - | 260°C for 10 Seconds | - |
Key Features
- SOT-23 package allows either two separate unidirectional configurations or a single bidirectional configuration.
- Standard Zener breakdown voltage range from 5.6 V to 47 V.
- Peak power dissipation of 24 or 40 W @ 1.0 ms (unidirectional).
- ESD rating: Class 3B (> 16 kV) per the Human Body Model and Class C (> 400 V) per the Machine Model.
- ESD rating of IEC61000-4-2 Level 4, ±30 kV Contact Discharge.
- Low leakage current < 5.0 µA.
- Flammability rating UL 94 V-0.
- Pb-free and RoHS compliant packages.
- AEC-Q101 qualified and PPAP capable.
- Small package size for high density applications.
- Available in 8 mm tape and reel for automated board assembly.
Applications
- Voltage regulation and waveform clipping.
- MOSFET gate protection.
- General usage in various end products.
- Protection in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, and medical equipment.
Q & A
- What is the primary function of the SZMMBZ18VALT1G Zener diode?
The primary function is to provide transient overvoltage protection capability in voltage and ESD sensitive equipment.
- What package type does the SZMMBZ18VALT1G come in?
The device comes in an SOT-23 package.
- What is the working peak reverse voltage range for this device?
The working peak reverse voltage (VRWM) is 14.5 V.
- What is the breakdown voltage range for the SZMMBZ18VALT1G?
The breakdown voltage (VBR) ranges from 17.10 V to 18.90 V.
- What is the peak power dissipation capability of this device?
The peak power dissipation is 24 or 40 W @ 1.0 ms (unidirectional).
- What are the ESD ratings for this device?
The device has an ESD rating of Class 3B (> 16 kV) per the Human Body Model, Class C (> 400 V) per the Machine Model, and IEC61000-4-2 Level 4, ±30 kV Contact Discharge.
- Is the SZMMBZ18VALT1G Pb-free and RoHS compliant?
- What are the typical applications for this Zener diode?
Typical applications include voltage regulation, waveform clipping, MOSFET gate protection, and general usage in various end products.
- What is the maximum case temperature for soldering purposes?
The maximum case temperature for soldering is 260°C for 10 seconds.
- Is the SZMMBZ18VALT1G suitable for automotive applications?
