Product category:
Circuit Protection Devices
News Release from: STMicroelectronics | Subject: SMA6J peak-pulse-power clamping diode
Edited by the Electronicstalk Editorial
Team on 15 October 2007
Clamping diode handles 175C temperatures
STMicroelectronics' SMA6J peak-pulse-power clamping diode is designed to protect sensitive electronic equipment in all industry sectors against electrostatic discharge (ESD) and power surges.
STMicroelectronics has released a 600W peak-pulse-power clamping diode, capable of operating at up to 175C junction temperature The clamping diode is the first 600W 10/1000us device in the industry to be available in the compact SMA package
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
Related stories
Driver drives LED efficiency
STMicroelectronics has introduced a new white LED driver with specific features for small LCD module backlight and high efficiency white LED power supply for portable applications.
Single-chip tuner cuts set-top box parts count
The STB6000 single-chip silicon tuner is designed to replace complex discrete component tuners in set-top boxes used for receiving digital TV or web-based material via satellite.
The new SMA6J series is designed to protect sensitive electronic equipment in all industry sectors against electrostatic discharge (ESD) and power surges, meeting IEC and MIL STD standards.
It is available in both unidirectional and bidirectional versions.
The new diodes feature low leakage currents, making them suitable for battery-powered products.
With a 9mm2 footprint, the SMA package saves 50% of the PCB area required by the SMB package commonly used by suppressors with this power capability.
In addition, the SMA package provides a small but significant height reduction to 2.23mm (10% thinner than competitive devices) thereby meeting the requirements of the stacked PCBs typically used in hard disk drives (HDDs), as well as other compact applications.
The SMA6J is specified for operation at up to 175C junction temperature (Tj max), suiting switch-mode power supply applications.
The higher operating junction temperature provides an increased safety margin under real-world conditions and a doubling of the safety margin for a true junction temperature of 125C.
The leakage current is specified at 85C as well as at 25C, to simplify product design, especially in telecomms applications.
The leakage current itself, at 0.2uA at 25C, is approximately 80% lower than competitive products.
The series meets the IEC61000-4-2 and MIL STD 883 Method 3015 ESD standards, plus overstress standards including IEC61000-4-4 and IEC61000-4-5.
In addition, the maximum clamping voltage is specified for 8/20 microsecond surges, as well as for 10/1000 microsecond, to match worldwide surge definitions.
The clamping voltage is up to 9% lower than in earlier devices, to provide better protection at the same surge level.
Dynamic on-state resistances and temperature coefficients are specified to enable calculation of maximum clamping voltage for different surge voltage or temperature requirements.
• STMicroelectronics: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
