Geneva, Switzerland STMicroelectronics has introduced two new devices that combine EMI filtering and ESD protection in a single ultra-compact package, enabling system designers to implement both functions within a footprint of 0.6 mm2. The new devices are the EMIF01-1003M3 for single-line applications and the EMIF02-1003M6 for dual-line applications.
The smallest component is the EMIF01-1003M3, packaged in a 0.6 mm-high SOT 883 that measures 1.0 x 0.6 mm. This new product eliminates the need for a separate filter, reducing PCB area by at least 55% for a typical 23-key keyboard application.
The EMIF02-1003M6 is a two-channel device in a 1.0 x 1.45-mm Micro QFN 6-lead
package with a low-mounted height of 0.55 mm, and is at least 45% smaller than competitive devices that combine ESD protection and filtering.
Both devices meet IEC61000-4-2 level 4 (15 kV air discharge and 8 kV contact discharge) for ESD protection and provide a low line-to-ground capacitance of 30 pF to preserve high-speed signal integrity. Filter characteristics include high attenuation in the GSM band, enabling enhanced performance when protecting the keypad, side keys, external connectors or data lines in smart phones, PDAs, portable computers, PC peripherals and M2M communication modules.
Clamping performance is also robust thanks to the internal Pi-protection structure, with a 9-V clamping voltage for the EMIF01 and 17 V for the EMIF02, when subjected to a 15 kV ESD strike. Low series resistance of 100 ohms and leakage current of 100 nA also minimize energy losses during normal circuit operation.
Pricing: The EMIF01-1003M3 and EMIF02-1003M6 are available now, in units of 100,000+ at a price of $0.09 and $0.15, respectively.
Product information: EMIF02-1003M6