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STR-A606XH Datasheet(PDF) 12 Page - Sanken electric |
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STR-A606XH Datasheet(HTML) 12 Page - Sanken electric |
12 / 13 page 12 SANKEN ELECTRIC CO., LTD. STR-A6000H-DS PWM Off-Line Switching Regulator ICs STR-A6000H Series January 8, 2013 Operating Precautions In the case that you use Sanken products or design your prod- ucts by using Sanken products, the reliability largely depends on the degree of derating to be made to the rated values. Derat- ing may be interpreted as a case that an operation range is set by derating the load from each rated value or surge voltage or noise is considered for derating in order to assure or improve the reliability. In general, derating factors include electric stresses such as electric voltage, electric current, electric power etc., environmental stresses such as ambient temperature, humidity etc. and thermal stress caused due to self-heating of semiconductor products. For these stresses, instantaneous val- ues, maximum values and minimum values must be taken into consideration. In addition, it should be noted that since power devices or IC’s including power devices have large self-heating value, the degree of derating of junction temperature affects the reliability significantly. Because reliability can be affected adversely by improper stor- age environments and handling methods, please observe the following cautions. Cautions for Storage • Ensure that storage conditions comply with the standard tem- perature (5 to 35°C) and the standard relative humidity (around 40 to 75%); avoid storage locations that experience extreme changes in temperature or humidity. • Avoid locations where dust or harmful gases are present and avoid direct sunlight. • Reinspect for rust on leads and solderability of the products that have been stored for a long time. Cautions for Testing and Handling When tests are carried out during inspection testing and other standard test periods, protect the products from power surges from the testing device, shorts between the product pins, and wrong connections. Ensure all test parameters are within the ratings specified by Sanken for the products. Remarks About Using Silicone Grease with a Heatsink • When silicone grease is used in mounting the products on a heatsink, it shall be applied evenly and thinly. If more silicone grease than required is applied, it may produce excess stress. • Volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. Silicone greases with low consistency (hard grease) may cause cracks in the mold resin when screwing the products to a heatsink. Our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product life, are indicated below: Type Suppliers G746 Shin-Etsu Chemical Co., Ltd. YG6260 Momentive Performance Materials Inc. SC102 Dow Corning Toray Co., Ltd. Soldering • When soldering the products, please be sure to minimize the working time, within the following limits: 260 ± 5 °C 10 ± 1 s (Flow, 2 times) 380 ± 10 °C 3.5 ± 0.5 s (Soldering iron, 1 time) • Soldering should be at a distance of at least 1.5 mm from the body of the products. Electrostatic Discharge • When handling the products, the operator must be grounded. Grounded wrist straps worn should have at least 1MΩ of resis- tance from the operator to ground to prevent shock hazard, and it should be placed near the operator. • Workbenches where the products are handled should be grounded and be provided with conductive table and floor mats. • When using measuring equipment such as a curve tracer, the equipment should be grounded. • When soldering the products, the head of soldering irons or the solder bath must be grounded in order to prevent leak volt- ages generated by them from being applied to the products. • The products should always be stored and transported in Sanken shipping containers or conductive containers, or be wrapped in aluminum foil. |
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