Overview
The MMQA18VT1G is a quad monolithic silicon voltage suppressor produced by onsemi. This device is designed for applications requiring transient overvoltage protection capability and is particularly useful in voltage and ESD sensitive equipment. The MMQA18VT1G features a quad junction common anode design, allowing it to protect four separate lines using only one package, which is ideal for situations where board space is limited.
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 |
| Lead Solder Temperature - Maximum (10 Second Duration) | TL | 260 | °C |
| Breakdown Voltage (Nominal) | VZ | 18 | V |
| Reverse Leakage Current (Max @ IF = 10 mA) | IR | 75 nA | nA |
| ESD Rating | - | Class 3B (exceeding 16 kV) | - |
Key Features
- SC−74 Package allowing four separate unidirectional configurations.
- 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 applications requiring unique site and control change requirements.
- Pb−Free and RoHS compliant.
Applications
The MMQA18VT1G is intended for use in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, medical equipment, and other similar applications. Its quad junction common anode design makes it particularly useful in protecting multiple lines with a single package, which is advantageous when board space is limited.
Example applications include:
- Computer interfaces and microprocessor protection.
- Keyboard and terminal protection.
- Protection in communication systems and medical equipment.
Q & A
- What is the MMQA18VT1G used for?
The MMQA18VT1G is used for transient overvoltage protection in voltage and ESD sensitive equipment.
- What is the peak power dissipation of the MMQA18VT1G?
The peak power dissipation is 24 W @ 1.0 ms and 150 W @ 20 μs.
- What is the ESD rating of the MMQA18VT1G?
The ESD rating is Class 3B, exceeding 16 kV per the Human Body Model.
- Is the MMQA18VT1G Pb−Free and RoHS compliant?
- What is the junction and storage temperature range of the MMQA18VT1G?
The junction and storage temperature range is −55 to +150°C.
- What package type does the MMQA18VT1G use?
The MMQA18VT1G uses an SC−74 package.
- How many lines can the MMQA18VT1G protect?
The MMQA18VT1G can protect four separate lines using a single package.
- Is the MMQA18VT1G suitable for automotive applications?
- What is the thermal resistance from junction-to-ambient for the MMQA18VT1G?
The thermal resistance from junction-to-ambient is 556°C/W.
- What is the maximum lead solder temperature for the MMQA18VT1G?
The maximum lead solder temperature is 260°C for a 10-second duration.
