Fuses are the oldest and easiest-to-understand circuit-protection components, with several common schematic representations (Figure 1). The function of the fuse is simple and clear; in the case of an overcurrent condition, the fuse “opens” (or blows, in common parlance) which thus stops the flow of current. Despite their simplicity, fuses have subtleties and considerations that […]
Fuses
Six considerations for better circuit protection
In an electronic system where the power source can be connected the wrong way round, protection should be considered to prevent damage to the circuitry. Most electronic circuits don’t like the power supply being reversed. However, there are other eventualities you could protect your circuit or system from temperature, humidity, excess current or excess loading, […]
Chip fuse protects against overcurrent and excessive ambient temperatures
The USN 1206 fuse is designed to meet the challenges associated with packing density in power electronics. The new chip fuse offers temperature-sensitivity suitable for both overcurrent protection and protection against excessive ambient temperatures. The USN 1206 is not a pure thermal fuse, per se. It requires a current flow to blow, thus providing protection […]
SMD fuses guard against excessive ambient temperatures
A new chip fuse offers temperature-sensitivity suitable for both over-current protection and protection against excessive ambient temperatures. The USN 1206 from Schurter is not a pure thermal fuse, per se. It requires a current flow to blow, thus providing protection against over-current, just as well as any conventional fuse. In addition, it is also designed […]
Fast-acting SMD fuses cover 5 to 15 A at 125 V ac/dc
SCHURTER’s new High Current Fuse, HCF, is an extremely robust SMD fuse, designed using solid state, thin film technology. With its fast reacting breaking capacity rated 1000 A at 125 VAC/ 125 VDC, over a current range of 5 A to 15A, the HCF is especially suited for use in particularly harsh applications, where the […]
TVS diode arrays optimized for DC powerlines for powered USB interfaces
Littelfuse, Inc., introduced a series of TVS Diode Arrays (SPA® Diodes) optimized to protect DC powerlines for PoweredUSB interfaces from damaging electrostatic discharges (ESDs). SP11xx Series TVS Diode Arrays employ Zener diodes fabricated in a proprietary silicon avalanche technology to protect each I/O pin in the interface. These robust devices offer high surge tolerance, […]
Bel Circuit Protection expands 0ZRE Series Hold Current
Bel Circuit Protection, a Bel group company (NASDAQ: BELFA and BELFB) and global manufacturer of standard glass and ceramic cartridge fuses, announces the addition of five new ratings to the 0ZRE Series Fuse product offerings. The 0ZRE Series has expanded the Hold Current range from 0.55A to 2A. The 240 VAC/240 Vdc ratings remain the […]
SMD resettable thermal cutoff protects lithium-polymer, prismatic cells
Bourns, Inc., a leading manufacturer and supplier of electronic components, today announced the industry’s first surface mount Miniature Resettable Thermal Cutoff (TCO) devices. Bourns’ new Model SA Series TCO battery protection solutions are compatible with surface mount reflow soldering methods, which eliminate supply chain steps and streamline the manufacturing process. By controlling abnormal, excessive current virtually […]
Solid-body fuses make EPPL list for aero applications
AEM, Inc., announces that its FM12 line of solid-body fuses have been selected by the European Space Components Coordination (ESCC) body for inclusion in the European Preferred Parts List (EPPL). The FM12 Series fuses, also included on the Defense Logistics Agency Qualified Products List (QPL), are intended for use in a wide variety of aerospace […]
Thyristors safeguard SLIC interfaces from lightning-induced surges, power fault events
Littelfuse, Inc.,today introduced two series of SIDACtor Protection Thyristors designed to protect SLIC (Subscriber Line Interface Circuit) interfaces against lightning-induced surges and power fault events. The surface-mount B61089QDR and B9110DF Series Thyristors for Programmable Tracking Protection contain fast-switching crowbarring structures that are compatible with the Basic levels outlined in the ITU K.20, K.21 and K.45 recommendations […]
