Eindhoven, Netherlands NXP claims a breakthrough in electrostatic discharge (ESD) protection +-30 kV contact discharge for its EMI filters in an ultra-thin leadless package (UTLP) with a height of 0.5 mm and pad pitch of 0.4 mm. The IP4253 and IP4254 EMI filters are designed for portable applications such as mobile phones, PDAs, MP3 players and GPS navigators.
This offers handheld designers the opportunity to reduce the size of their printed-circuit-boards (PCBs) while doubling the level of integrated ESD protection, said NXP. With so much functionality available in mobile multimedia devices, the RF transceiver in the handset interferes with more interfaces, making a higher degree of EMI filtering essential, added the company. In addition, the core ICs in mobile multimedia devices also require a higher level of protection from electrostatic discharge, since they are manufactured using smaller process technologies to enable a higher level of integration.
The IP4253 and IP4254 EMI filters are available in 4-, 6- and 8-channel configurations, each with component values of 15 pF/ 100 ohms/ 15 pF and 15 pF/ 200 ohms/ 15 pF. These EMI filters are said to offer a 90-percent space reduction compared to alternative discrete technology. With a pad pitch of only 0.4 mm, the IP4253 and IP4254 devices enable a space reduction of more than 30 percent compared to alternative solutions in a 0.5-mm pitch size. In addition, the UTLP increases the "silicon to plastic" ratio and offers less parasitic capacitance and inductance compared to other plastic packages, due to shorter wire length and internal traces, making it suitable for high-frequency applications, said the company.
Availability: Production quantities are available in a RoHS compliant, lead-free version, as well as a green package version without halogens in the plastic.
Product information: www.nxp.com/products/discretes/esd_emi_filtering
NXP Semiconductors, 1-800-447-1500, www.nxp.com