Overview
The SZMMQA33VT1G is a quad monolithic silicon voltage suppressor designed by onsemi for applications requiring transient overvoltage protection. This device is part of the MMQA and SZMMQA Quad Common Anode Series, which is ideal for protecting voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, and medical equipment. The SZ prefix indicates that this device is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other applications with unique site and control change requirements.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Peak Power Dissipation @ 1.0 ms | Ppk | 24 | W |
| Peak Power Dissipation @ 20 μs | Ppk | 150 | W |
| Total Power Dissipation on FR-5 Board @ TA = 25°C | PD | 225 | mW |
| Thermal Resistance from Junction-to-Ambient | RθJA | 556 | °C/W |
| Junction and Storage Temperature Range | TJ, Tstg | −55 to +150 | °C |
| Breakdown Voltage (Nominal) | VZ | 33 | V |
| Reverse Leakage Current @ VZ | IR | 75 nA | nA |
| ESD Rating | - | Class 3B (exceeding 16 kV) | - |
| Package Type | - | SC-74 | - |
Key Features
- SC-74 package allowing four separate unidirectional configurations in a single package, ideal for space-constrained designs.
- Peak power dissipation of 24 W @ 1.0 ms and 150 W @ 20 μs.
- Low leakage current of less than 2.0 μA.
- ESD rating of Class 3B, exceeding 16 kV per the Human Body Model.
- AEC-Q101 qualified and PPAP capable for automotive and other demanding applications.
- Pb-free and RoHS compliant.
- Corrosion-resistant finish and easily solderable for optimal automated board assembly.
Applications
The SZMMQA33VT1G is designed for use in various applications requiring transient overvoltage protection, including:
- Computers and peripherals.
- Printers and business machines.
- Communication systems.
- Medical equipment.
- Automotive systems (due to AEC-Q101 qualification).
- Other ESD-sensitive electronic devices.
The quad junction common anode design allows for the protection of four separate lines using a single package, which is particularly beneficial in applications where board space is limited.
Q & A
- What is the primary function of the SZMMQA33VT1G?
The primary function of the SZMMQA33VT1G is to provide transient overvoltage protection for ESD-sensitive equipment.
- What is the peak power dissipation of the SZMMQA33VT1G?
The peak power dissipation is 24 W @ 1.0 ms and 150 W @ 20 μs.
- What is the ESD rating of the SZMMQA33VT1G?
The ESD rating is Class 3B, exceeding 16 kV per the Human Body Model.
- Is the SZMMQA33VT1G suitable for automotive applications?
- What is the package type of the SZMMQA33VT1G?
The package type is SC-74.
- Is the SZMMQA33VT1G Pb-free and RoHS compliant?
- What is the junction and storage temperature range of the SZMMQA33VT1G?
The junction and storage temperature range is −55 to +150°C.
- How many lines can the SZMMQA33VT1G protect with a single package?
- What are some typical applications of the SZMMQA33VT1G?
- What is the thermal resistance from junction-to-ambient for the SZMMQA33VT1G?
