AEC-Q101-qualified TVS diodes protect in-car electronics

September 13, 2016 // By Christoph Hammerschmidt
Load dump and similar transient voltage events are a frequent source of damage to sensitive electronic equipment in automotive environments. To protect this circuitry, Littlefuse has developed two series of AEC-Q101 qualified TVS diodes.

The TP1.5KE and TP5KP Series Automotive Transient Voltage Suppression (TVS) Diodes offer a choice of 1500W (TP1.5KE) or 5000W (TP5KP) peak pulse power dissipation ratings in standard DO-201 and P600 axial-lead packages respectively. 
Applications include DC line protection and ESD protection in automotive electronics such as ECUs, sensors, entertainment systems, and body control modules (BCMs); they are also useful for the protection of I/O interfaces, VCC busses and other vulnerable circuits used in telecom, computer, industrial and portable consumer electronics applications.

“For automotive electronics systems applications, these TVS Diodes outperform conventional circuit protection technologies like metal-oxide varistors (MOVs) and multi-layer varistors (MLVs), due to their AEC-101 qualified designs, low reverse voltage breakdown and low voltage clamping ratings,” claims Charlie Cai, global product marketing manager for Littelfuse.

TP1.5KE and TP5KP Series TVS Diodes from Littelfuse offer these benefits:

  • Their high peak pulse power dissipation ratings (1500W@10/1000μs for TP1.5KE Series; 5000W@10/1000μs for TP5KP Series) are well-suited for automotive applications. These high ratings  helps the power systems into which they are designed pass the various 1, 2a, 2b, 3a, 3b surge tests specified in ISO7637-2.
  • Both unidirectional and bidirectional polarity devices offer wide standoff voltage ranges (10.2V-40.2V for the TP1.5KE Series; 10V-60V for the TP5KP Series), so designers can easily select the most suitable part for their designs and applications.
  • These AEC-Q101 qualified automotive-grade products are also well-suited for high reliability applications.
  • They comply with IEC 61000-4-2 and IEC 61000-4-4 standards, to help circuit designers meet global regulatory requirements.

The TP1.5KE Series (DO-201 package) is provided in tape & reel packaging in quantities of 1,200. The TP5KP Series (P600 package) is provided in tape & reel packaging in quantities of 800.

More Information: 
 TP1.5KE Series product page and TP5KP Series product page .