How and Why Varistor Failure Occurs Including the Effect of Multipulse Surges
This article is about varistor construction, characteristics, testing and the often-unappreciated ways varistors can fail.
There’s an “R” in “Varistor”
This article analyzes the V-I characteristic of a varistor and shows it is more appropriate to treat the varistor as a current dependent resistance rather than the conventionally taught voltage dependent resistance. Spice circuit examples are given, based on a current dependent resistance varistor model.
New Requirements for MOVs Used for Surge Suppression on AC Mains Ports
It is a common misconception that any product that complies with IEC 60950-1 will also comply with IEC 62368-1. A key goal of this article is to help readers of IEC 62368-1 understand the underlying safety concerns that the new requirements are trying to address.
New TDK Data Book Features EPCOS Transient Voltage Protection Components
TDK Corporation has published a new data book featuring EPCOS Ceramic Transient Voltage Suppressors (CTVS). It contains the extended product range of multilayer varistors (MLV), ESD/EMI filters, CeraDiode® c... Read More...
TDK Announces Ultra-Flat, Compact EPCOS Varistors for ESD Protection
TDK Corporation announced a new series of EPCOS multilayer varistors of the CeraDiode® family, which includes the most compact, flattest and most rugged varistor for ESD protection of mobile equipment. It... Read More...