Silicon surge protection diodes
28 April 2010
Circuit & System Protection
STMicroelectronics has announced what it believes to be the first silicon surge protectors meeting international surge-protection standard IEC 61000-4-5, with a family of devices delivering high reliability and effective protection throughout the entire operating temperature range.
The STIEC45 Transil family provides mandatory protection for power supplies against surges, electrostatic discharge and electrical fast transients. Metal-oxide varistors (MOVs) are usually connected to prevent surge energy reaching the power supply, but silicon surge protectors tend to be more reliable. ST’s Transils maintain more than 75% of their protection capability up to 150°C, and are soldered to standard-sized metal pads on printed circuit board. This approach delivers a space-efficient solution for equipment operating in high-temperature environments, such as factories or vehicles.
The devices also meet IEC 61000-4-2 for ESD and IEC 61000-4-4 for electrical fast transient (EFT), as well as passing MIL-STD-883 (Method 3015) ESD tests. They feature 500 A (8/20 μs) peak pulse-current capability and 410 A (8/20 μs) current capability at 150°C. Leakage current is a low 0,2 μA at 25°C and 1 μA at 85°C. Stand-off voltage options include 24, 26, 28, 30 and 33 V.
For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za
Further reading:
Why wait to automate
NewElec Pretoria
Circuit & System Protection
NewElec’s initiative helps you gain operational visibility via HMI or PLC by retrofitting intelligent motor protection relays without replacing MCCs or rewiring the plant.
Read more...
Clearing the Static: Effectively control static in your workplace
Actum Electronics
Circuit & System Protection
Controlling electrostatic discharge in the workplace is crucial to protect sensitive electronic equipment from damage. Implementing an ESD control program involves various measures and tests.
Read more...
Clearing the Static: Staying grounded: Ensuring effective ESD control
Actum Electronics
Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.
Read more...
Clearing the Static: ESD component safety in storage and transportation
Actum Electronics
Circuit & System Protection
Conductive containers create a Faraday cage effect, safely channelling electrostatic charges away from the components inside.
Read more...
Clearing the Static: Conductive foot, heel and shoe grounders
Actum Electronics
Circuit & System Protection
Conductive foot, heel and shoe grounders are used in electrostatic discharge protected areas to provide a path to ground for static electricity.
Read more...
LED driver for industrial power supply indication
Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...
Clearing the Static: Cleaning in an ESD-protected area
Actum Electronics
Circuit & System Protection
Cleaning in a protected electrostatic discharge area is a critical task to maintain the integrity of sensitive electronic components and prevent damage caused by static electricity.
Read more...
Clearing the Static: Key principles of ESD control in electronics manufacturing
Actum Electronics
Circuit & System Protection
Effectively managing electrostatic discharge is essential in electronics manufacturing to ensure not only product reliability, but also worker safety.
Read more...
Clearing the Static: Three steps for a dry ESD packaging system
Actum Electronics
Circuit & System Protection
For optimal storage, it’s essential to complete the dry-packaging system by adding Desiccant Packs and Humidity Indicator Cards.
Read more...
Ensuring safety with earth leakage protection
NewElec Pretoria
Circuit & System Protection
Earth leakage protection helps mitigate the risks of electric shocks, fires, and equipment damage by swiftly identifying faults and disconnecting the power supply, thus safeguarding both human lives and machinery.
Read more...
printer friendly version