WARNINGS Note: Read ALL the following BEFORE using this product. Follow all Guidelines at all times while using this product. CAUTION This warning indicates possibility of personal injury and material damage, in case the product is not used properly. PRECAUTIONS IN HANDLING AND USAGE Parameters like inductance may change by shock in ferrite cores. Also, it may become difficult to achieve proper characteristics if cores are subjected to even momentary magnetization by strong magnet. Handle carefully. The edge of the surface of ferrite core is sharp. Minute burrs may be present. Handle carefully. Ferrite cores are weak and prone to shock damage. Shocks may cause cracking and chipping in cores. Inspect ferrite cores for cracks prior to use. If ferrite cores are used without inspecting for cracks, deterioration of characteristics and heating may result. Observe the following to prevent injury caused by cracks or chips. Protect eyes from broken core pieces. Do not drop or expose ferrite cores to shocks because it is easy to cause chipping. Keep strong magnets away from ferrite cores. Magnets may break the core by shock. Do not subjects cores to rapid changes in temperature (heat shock). If rapid temperature changes are required, please contact Hitachi Metals,Ltd. first. Not consumable by humans. Keep away from infant. DESIGN GUIDELINE Possibility of ignition and heating. Follow all guidelines carefully. a b. c. d. e. f. g. h. i. j. k. Insulation resistance or ferrite core is not high. Do not use as an insulator. Try insulation treatment using case, bobbin or tape. Consider allowable current before selecting wire for winding. To prevent insulation defects and incomplete shorts, do not damage the wire by tension, rubbing or projections of winding, etc. Select material and decide dimensions in accordance with Safety Standards such as UL, when designing bobbins. Provide appropriate clearance between ferrite cores and cases, bobbins and coils. When using cases, bobbins and resins, select heat resistant transformer materials with thermal expansion rates close to that of the core. Core breaks may occur by forces caused by difference in thermal expansion rates. If using resins such as adhesives, varnishes and paints, use only materials that are noncorrosive to core and parts. If using high voltage circuits, keep appropriate space between, or distance along surface and insulation distance of coil. In case of divided circuits and bifilar winding, do not allow the current to concentrate on one side. The difference of number of turns may lead to abnormal heating and ignition. Avoid the flow of fault current to transformer when another circuit is in trouble. Provide enough space (between transformer and peripheral parts) to avoid the deterioration of and damage to peripheral parts because of heating of transformer. Select deburred and coated cares. Wire scratches may be caused by burrs on the surface of core when winding directly on ferrite core, causing shorts. Leakage flux may cause malfunctions of appliances. Check effect of leakage flux by using the appliance and peripheral appliance in advance, and take appropriate corrective action.