Overview
The SZMMBZ4252T1G is a dual monolithic silicon Zener diode designed by onsemi for applications requiring transient overvoltage protection. This component is part of the MMBZxxxALT1G series and is specifically tailored for use in voltage and ESD sensitive equipment. It features a SOT-23 package, making it ideal for high-density applications where board space is limited.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Power Dissipation @ 1.0 ms | 40 | W |
| Total Power Dissipation on FR-5 Board @ TA = 25°C | 225 | mW |
| Thermal Resistance Junction-to-Ambient | 556 | °C/W |
| Junction and Storage Temperature Range | -55 to +150 | °C |
| Lead Solder Temperature - Maximum (10 Second Duration) | 260 | °C |
| ESD Rating - Human Body Model | > 16 kV | Class 3B |
| ESD Rating - Machine Model | > 400 V | Class C |
| ESD Rating - IEC61000-4-2 Level 4 | ±30 kV Contact Discharge | |
| Maximum Clamping Voltage @ Peak Pulse Current | Varies by device marking | V |
| Maximum Reverse Leakage Current @ VRWM | 50 nA (typical) | nA |
| Breakdown Voltage @ IT | Varies by device marking | V |
| Forward Voltage @ IF | 0.9 V Max @ IF = 10 mA | V |
| Package | SOT-23 (Pb-Free) |
Key Features
- Dual monolithic silicon Zener diodes in a SOT-23 package, allowing for either two separate unidirectional configurations or a single bidirectional configuration.
- Standard Zener breakdown voltage range from 5.6 V to 47 V.
- High peak power dissipation of 24 or 40 W @ 1.0 ms.
- High ESD rating: Class 3B (> 16 kV) per the Human Body Model and Class C (> 400 V) per the Machine Model, with IEC61000-4-2 Level 4, ±30 kV Contact Discharge.
- Low leakage current of less than 5.0 µA.
- Flammability rating UL 94 V-0.
- Pb-Free and RoHS compliant.
- AEC-Q101 qualified and PPAP capable for automotive and other critical applications.
Applications
The SZMMBZ4252T1G is designed for use in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, medical equipment, and other applications where transient overvoltage protection is crucial. Its compact SOT-23 package makes it particularly suitable for high-density applications where board space is limited.
Q & A
- What is the peak power dissipation of the SZMMBZ4252T1G?
The peak power dissipation is 40 W @ 1.0 ms. - What is the thermal resistance junction-to-ambient for this component?
The thermal resistance junction-to-ambient is 556 °C/W. - What are the junction and storage temperature ranges for this diode?
The junction and storage temperature range is -55 to +150 °C. - What is the ESD rating of the SZMMBZ4252T1G?
The ESD rating is 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 SZMMBZ4252T1G Pb-Free and RoHS compliant?
Yes, it is Pb-Free and RoHS compliant. - What package type does the SZMMBZ4252T1G use?
The component uses a SOT-23 package. - What are some typical applications for the SZMMBZ4252T1G?
Typical applications include computers, printers, business machines, communication systems, and medical equipment. - Is the SZMMBZ4252T1G AEC-Q101 qualified?
Yes, it is AEC-Q101 qualified and PPAP capable. - What is the maximum forward voltage at IF = 10 mA?
The maximum forward voltage at IF = 10 mA is 0.9 V. - What is the flammability rating of the SZMMBZ4252T1G?
The flammability rating is UL 94 V-0.
