Overview
The CM1213A-02SO is a part of the CM1213A family of diode arrays designed by onsemi to provide robust ESD (Electrostatic Discharge) protection for electronic components and subsystems. These devices are particularly suited for systems that require minimal capacitive loading, such as those with high data and clock rates. The CM1213A-02SO offers two channels of ESD protection, making it ideal for protecting sensitive electronics from ESD pulses up to 12 kV as per the IEC 61000-4-2 standard.
Key Specifications
| Parameter | Rating | Units |
|---|---|---|
| Operating Supply Voltage (VP - VN) | 5.5 | V |
| Operating Temperature Range | -40 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| DC Voltage at any channel input | (VN - 0.5) to (VP + 0.5) | V |
| Package Power Rating (SC-74 Package) | 225 | mW |
| ESD Protection (IEC 61000-4-2 Contact) | ±12 kV | kV |
| Input Channel Capacitance (Typical) | 0.85 pF | pF |
Key Features
- One, two, and four channels of ESD protection available in different packages (CM1213A-02SO provides two channels)
- Provides ESD protection to IEC 61000-4-2 Level 4, ±12 kV contact discharge
- Low channel input capacitance of 0.85 pF typical, with minimal capacitance change with temperature and voltage
- Channel input capacitance matching of 0.02 pF typical, ideal for differential signals
- Each I/O pin can withstand over 1000 ESD strikes
- SZ prefix for automotive and other applications requiring unique site and control change requirements; AEC-Q101 qualified and PPAP capable
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
- USB 2.0 ports at 480 Mbps in desktop PCs, notebooks, and peripherals
- IEEE 1394 Firewire ports at 400 Mbps/800 Mbps
- DVI and HDMI ports in notebooks, set-top boxes, digital TVs, and LCD displays
- Serial ATA ports in desktop PCs and hard disk drives
Q & A
- What is the primary function of the CM1213A-02SO?
The primary function of the CM1213A-02SO is to provide ESD protection for electronic components and subsystems, particularly those requiring minimal capacitive loading.
- What is the maximum ESD protection level provided by the CM1213A-02SO?
The CM1213A-02SO provides ESD protection up to ±12 kV as per the IEC 61000-4-2 standard.
- What are the typical input channel capacitance and capacitance matching of the CM1213A-02SO?
The typical input channel capacitance is 0.85 pF, and the capacitance matching is 0.02 pF, which is ideal for differential signals.
- What are the operating and storage temperature ranges for the CM1213A-02SO?
The operating temperature range is -40 to +150°C, and the storage temperature range is -65 to +150°C.
- Is the CM1213A-02SO RoHS compliant and Pb-free?
Yes, the CM1213A-02SO is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What types of applications are the CM1213A-02SO typically used in?
The CM1213A-02SO is typically used in USB 2.0 ports, IEEE 1394 Firewire ports, DVI and HDMI ports, and Serial ATA ports.
- How many ESD strikes can each I/O pin of the CM1213A-02SO withstand?
Each I/O pin can withstand over 1000 ESD strikes.
- What is the significance of the SZ prefix in some CM1213A models?
The SZ prefix indicates that the device is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other applications requiring unique site and control change requirements.
- What is the recommended placement of the CM1213A-02SO on a PCB?
The CM1213A-02SO should be located as close as possible to the point of entry of expected electrostatic discharges, with minimal PCB trace lengths to the power supply, ground planes, and between the signal input and the protection array.
- Is a bypass capacitor necessary for the CM1213A-02SO?
A bypass capacitor is not strictly necessary due to the integrated Zener diode, but a 0.22 µF ceramic chip capacitor between VP and the ground plane is recommended for optimal performance.
