Overview
The SZMMSZ18T1G is a 18V Zener diode produced by onsemi, designed for surface mount applications. This component is part of the MMSZxxxT1G series and is packaged in a SOD-123 case, which is optimized for automated board assembly. The SZMMSZ18T1G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other applications requiring stringent quality and reliability standards.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Total Power Dissipation on FR-5 Board | PD | 500 | mW |
| Thermal Resistance, Junction-to-Ambient | RθJA | 340 | °C/W |
| Thermal Resistance, Junction-to-Lead | RθJL | 150 | °C/W |
| Junction and Storage Temperature Range | TJ, Tstg | -55 to +150 | °C |
| Reverse Zener Voltage @ IZT | VZ | 17.10 to 18.90 | V |
| Maximum Zener Impedance @ IZT | ZZT | 45 | Ohms |
| Reverse Leakage Current @ VR | IR | 50 nA | A |
| Forward Current @ VF | IF | 10 mA | mA |
| Forward Voltage @ IF | VF | 0.95 V Max. | V |
Key Features
- 500 mW power rating on FR-4 or FR-5 board
- Wide Zener reverse voltage range from 2.4 V to 56 V
- Package designed for optimal automated board assembly
- Small package size for high density applications
- ESD rating of Class 3 (> 16 kV) per Human Body Model
- AEC-Q101 qualified and PPAP capable
- SZ prefix for automotive and other applications requiring unique site and control change requirements
- Pb-free packages available
Applications
The SZMMSZ18T1G Zener diode is suitable for various applications, including:
- Automotive systems requiring high reliability and quality standards
- Voltage regulation and stabilization in electronic circuits
- Overvoltage protection in power supplies and other electronic devices
- High density applications due to its small SOD-123 package
- Industrial and consumer electronics where precise voltage regulation is necessary
Q & A
- What is the maximum power dissipation of the SZMMSZ18T1G on an FR-5 board?
500 mW.
- What is the thermal resistance from junction to ambient for the SZMMSZ18T1G?
340 °C/W.
- What is the junction and storage temperature range for this Zener diode?
-55 to +150 °C.
- What is the reverse Zener voltage range for the SZMMSZ18T1G?
17.10 to 18.90 V.
- What is the maximum Zener impedance at IZT for this device?
45 Ohms.
- What is the reverse leakage current at VR for the SZMMSZ18T1G?
50 nA.
- Is the SZMMSZ18T1G AEC-Q101 qualified?
- What type of package does the SZMMSZ18T1G come in?
SOD-123 surface mount package.
- Is the SZMMSZ18T1G Pb-free?
- What are some common applications for the SZMMSZ18T1G?
Automotive systems, voltage regulation, overvoltage protection, high density applications, and industrial/consumer electronics.
