Littelfuse has launched a series of high-temperature SCR (silicon-controlled rectifier) thyristors, claimed the first of their kind to offer a junction temperature of 150°C in compact surface-mount D-PAK (TO-252) packaging. These devices are also available in through-hole V-PAK (TO-251) packages. The SJ Series devices allow designers to replace existing SCR thyristors in larger TO-220AB and TO-263 packages, and allow others to design smaller products, says the firm.
Applications for SJ Series SCR Thyristors include capacitive discharge ignition (CDI) systems for motorcycle engines, portable generator engine ignition, strobe lights and nailers, as well as generic rectifiers, battery voltage regulators, converters and inrush current limiting circuits in AC-DC converters. They are also ideal for use in controls for power tools, home/brown goods (such as consumer electronics like televisions, radios, digital media players, and computers) and white goods/appliances.
Standard SJ Series SCR Thyristors have a low gate current trigger level of 6mA or 15mA maximum at approximately 1.5V. Sensitive models in the series feature a gate trigger current of less than 200μA. These sensitive gate devices can be easily triggered by sense coils, proximity switches, and microprocessors.
SJ Series (SJxx04x, SJxx06x, SJxx08x, SJxx10x and SJxx12xx) SCR Thyristors are available in a choice of D-PAK and V-PAK packages in tubes in minimum order quantities of 750 (75 per tube) or in embossed carriers with a minimum order quantity of 2,500.
Sample requests may be placed through authorized Littelfuse distributors worldwide. For further details, click here.