Date: 10/03/2009

ESD protection devices for mobile phones

California Micro Devices has released new ESD protection device CM1282 for mobile phones. The CM1282 single channel ESD protection device protects antenna circuitry on mobile phones and other such wireless devices incorporating FM radio, GPS, Bluetooth or WLAN technologies. The CM1282 features low dynamic resistance, low clamping voltage and minimal insertion loss.


The CM1282 was designed to have minimal impact on low level signals through the use of PicoGuard's low capacitance diodes. These diodes exhibit the industry's lowest insertion loss characteristics making them ideal for low level signal applications.


Clamping voltage defines the level at which the signal voltage level will be successfully held during an ESD strike, up to the rated ESD protection level. A low clamping voltage capability will ensure protection to the device under protection (DUP) by keeping the voltage at the DUP pin at a level that minimizes damage from the ESD strike. CMD's PicoGuard devices offer the industry's lowest clamping voltage.

CMD's PicoGuard devices also offer the industry's lowest dynamic resistance characteristics.

Key features of CM1282:

Very low capacitance (0.5 pF) antenna port protection
Very low insertion loss (<-0.25 dB) through 1.8 GHz
Dynamic resistance more than 30% lower than competing solutions
Clamping voltages 20% lower than competing solutions
8kV contact discharge protection per IEC 61000-4-2 Level 4
Low leakage current, important for battery operated devices
Meets the linearity mask for 802.11 protocols

Package: Compact SOD-882 lead free, RoHS compliant package.
Availability: Now in samples, mass production is planned for April 2009.
Price: Each US$0.06 in 3000 units.

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