High-Power Surface Mount TVS Diodes
Littelfuse, Inc. has introduced two new product series, the LTKAK6 and LTKAK10 Series TVS Diodes, designed to offer clamping characteristics superior to those of standard silicon avalanche diode (SAD) technologies. This superior performance is made possible by Littelfuse Foldbak technology, which provides a clamping voltage lower than the avalanche voltage but above the rated working voltage. As a result, any voltage rise due to increased current conduction is minimized. Both products can be connected in series and/or parallel to create a variety of flexible protection solutions. They provide the same enhanced quality, easy manufacturing and compact mechanical design found in the companyâ€™s AK Series TVS Diode families.
Additionally, because they are provided in a surface mount SMTO-218 package, they allow circuit designers to save even more circuit board space. This surface mount package is ideal for automatic pick and place assembly and reflow processes, allowing for a lower manufacturing cost and greater soldering quality than axial leads packages.
Typical applications for the LTKAK6 and LTKAK10 Series TVS Diodes include transient overvoltage protection for cell phone base stations, industrial transient voltage surge suppressors (TVSSs), railway (railroad) trackside signaling and control cabinets, defense and avionics, and power grid and distribution systems.
â€œThe LTKAK6 and LTKAK10 Series are the circuit protection industryâ€™s first true surface mount high power TVS Diodes,â€ said Jeff Chin, product line director for the TVS Diodes line. â€œThey offer better voltage clamping performance and higher speed than other solutions used in these applications, such as metal oxide varistors (MOVs).â€
LTKAK6 and LTKAK10 Series TVS Diodes offer these key benefits: LTKAK6 and LTKAK10 series in an innovative package (patent pending) design offers the highest power rating (8x20Âµs waveform) among surface mount TVS available in current market; LTKAK6 and LTKAK10 series in a surface mount package is suited for automatic pick and place assembly and reflow processes, allowing for a lower manufacturing cost and greater soldering quality than axial leads packages.
Because LTKAK6 and LTKAK10 TVS Diodes can withstand multiple surge events, they will help equipment manufacturers extend their product warranties because, unlike passive MOVs, these semiconductor TVS Diodes do not wear out, which makes them suited for protecting valuable loads. These TVS Diodes are certified, environmentally friendly and suitable for worldwide usage that can help designers meet global regulatory standards. The LTKAK6 and LTKAK10 Series TVS Diodes are available in SMTO-218 surface mount packages and are sold in quantities of 400 in tape-and-reel packaging or quantities of 100 in tube pack (25 per tube).