IC combines ESD

5 March 2008 Circuit & System Protection

STMicroelectronics has developed 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.

Two new devices have been announced, meeting IEC61000-4-2 level 4 for ESD protection and also having 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.

The smallest component introduced is the EMIF01-1003M3 for single-line applications. Its 0,6 mm-high SOT883 package matches the 1,0 x 0,6 mm footprint of competing devices, which provide ESD protection only. The EMIF02-1003M6 is a two-channel device in a 1,0 x 1,45 mm Micro QFN 6-lead package, and its low mounted height of 0,55 mm further enhances low-profile design in advanced consumer products.

In addition to saving board space and simplifying layout, integrating protection and filtering functions into these two new devices also reduces assembly time and component-mounting costs while improving product reliability.

Both devices achieve 15 kV air discharge and 8 kV contact discharge, in accordance with the IEC61000-4-2 specification. Clamping performance is also robust thanks to the internal Pi-protection structure, with 9 V clamping voltage for the EMIF01 and 17 V for the EMIF02, when subjected to a 15 kV ESD strike. This performance is necessary to protect leading-edge products built from sensitive CMOS circuits using deep sub-micron process geometries. Low series resistance of 100 Ω and leakage current of 100 nA also minimise energy losses during normal circuit operation.

Further reading:

Clearing the Static: Understanding the significance of ESD audits
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To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.

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Varistors for automotive applications
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TDK Corporation has announced the addition of two new varistors to its AVRH series for automotive applications where both are characterised by the high electrostatic discharge-withstanding voltage demanded to ensure the safe operation of safety-critical automotive functions.

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Clearing the Static: The importance of ESD wrist straps
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ESD clothing plays a pivotal role in preventing that people do not charge the products that they are working with.

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Clearing the Static: ESD clothing and footwear
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ESD clothing plays a pivotal role in preventing that people do not charge the products that they are working with.

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Single-phase EMC filters
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TDK Corporation has expanded its portfolio of single-phase EMC filters for AC and DC applications up to 250 V and rated currents from 6 to 30 A.

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Clearing the Static: The significance of cleaning in ESD control
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It is essential that ESD-protected workplace areas and equipment (tables, floors, work mats, trays, tools, machine elements) are cleaned with specialised antistatic cleaners.

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Clearing the Static: ESD protective packaging
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The primary objective of ESD protective packaging is to prevent ESD incidents within the packaging and facilitate the dissipation of charges from the outer surface.

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New NeoMesh protocol stack version
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NeoCortec has released an updated NeoMesh protocol stack version 1.6 firmware for its NC2400 and NC1000 module series, which now supports the new Sensirion SHT4xA temperature and humidity sensor series.

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NewFeed feeder protection relay
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The NewFeed Feeder Protection Relay has been designed to protect the connection between solar farms and conventional power grids in both low voltage (LV) and medium voltage (MV) distribution settings.

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