Date: 16/09/2009

New electrostatic discharge protection devices for portable electronic apps

Tyco Electronics has made available of three new devices to its line of electrostatic discharge (ESD) protection devices with miniature form factor, bi-directional technology and ultra-low capacitance makes it suitable for portable electronic applications such as mobile phones, MP3 players, PDAs and digital cameras.

The devices bi-directional operation allows placement on the PCB without orientation constraint and wont clip signals that swing below ground and designed for IEC61000-4-2 ESD test pulses, the SESD device protects sensitive integrated circuits (ICs).

Other key features include,

Low capacitance and insertion loss
Capable of withstanding numerous ESD strikes
Low-breakdown voltage < 5.8V
Low-leakage current - 1.0uA (max)
RoHS compliant

Tyco initially offered the SESD0201C-006-058 and the SESD0201C-120-058 in 0201 Chip Scale Package (CSP) package. The SESD0201C-006-058 is a bi-directional and ultra-low capacitance 0.6 picofarad (pF) device suitable for protecting very-high-speed data lines, such as USB and HDMI, or low-voltage antenna ports. The devices' ultra-low capacitance, low insertion loss (<0.5dB up to 3GHz), and high linearity of voltage vs. frequency helps minimize signal degradation.

The SESD0201C-120-058 is a high capacitance (12pF) device used for low-speed generic interfaces such as keypads, power buttons, speakers, and microphone ports, in portable electronics. Both SESD0201C-006-058 and SESD0201C-012-058 devices offer 8kV contact and 15kV air discharge protection per the IEC61000-4-2 standard. Tyco Electronics is also introducing the SESD0402S-005-054 device, an ultra-low capacitance SOD-923 (i.e. 0402 size package) device with 0.5pF typical capacitance, and a 10kV contact discharge rating per IEC61000-4-2 that is for use with digital applications such as USB and HDMI.

"As integrated circuits shrink, so does their ability to withstand ESD stress, thereby increasing the risk of circuit damage," said Patrick Hibbs, Global Communication Systems Marketing and ESD Business Manager for Tyco Electronics Raychem Circuit Protection Products. "Our new SESD product line helps designers faced with difficult board routing and space requirements. New micro-USB and micro-HDMI connections in portable electronics are excellent examples of applications where miniature surface-mount discretes can help provide a robust, space-saving and cost-effective ESD protection solution."

Availability: Now
For more details visit www.tycoelectronics.com, www.circuitprotection.com