The SM series of transient voltage suppressors (TVS) are designed to protect components which are connected to data and transmission lines from voltage surges caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning.
- 12 V working voltage
- 300 Watts peak pulse power (tp = 8/20 µs)
- Protects one bidirectional line or two unidirectional lines
- Transient protection for data & power lines to
- IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
- IEC 61000-4-4 (EFT) 40 A (5/50 ns)
- IEC 61000-4-5 (Lightning) 24 A (8/20 µs)
- Low clamping voltage
- Solid-state silicon-avalanche technology
- Cellular handsets and accessories
- Portable electronics
- Industrial controls
- Set-top boxes
- Server, notebook, and desktop PCs
- SM12.TCT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
(-40°C to +85°C / 4000 cycles)
(50°C, 4000 Hrs)
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The Importance of Keyboard ESD Protection
Since the dawn of computers, the keyboard has been the primary communication mechanism between human and machines. Over the years, many technologies and interfaces have changed, but the keyboard has barely changed in both form and function. Recently, I bought an exclusive wireless keyboard. Initially, it communicated with the computer via Bluetooth without any issues. However, after a month or so, it suddenly stopped. When I opened the internal circuit, I was surprised that the keys had no electrostatic discharge (ESD) protection. Any electronic device's keypad, side keys or push buttons are vulnerable to ESD due to constant human interaction with them. Adding ESD protection devices in a keyboard/keypad/side keys can avoid disastrous situations such as the failure of my keyboard. Let us discuss ESD in general and how we can protect our electronic devices from it.
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