Specification Brand : Ohmite BulletPoint : Price For: Each BulletPoint1 : 30 Pack convenient, pocket-sized, color code guides for determining standard and precision resistor values BulletPoint2 : Reverse side includes many useful formulas, conversion factors, and a list of commonly used resistor values BulletPoint3 : Each card measures 6" x 3" BulletPoint4 : Perfect for distributing to students in a classroom or laboratory BulletPoint5 : Reverse Side: Ohm's Law Formula for DC Circuits, Resistors in Series, Resistors in Parallel - General Formula, Conversion Factors such as meters to inches to feet, kilometers to miles, inches to centimeters, etc Color : Gold ExternallyAssignedProductIdentifier : 6308753328322 ExternallyAssignedProductIdentifier1 : 0679771940404 ExternallyAssignedProductIdentifier2 : 679771940404 Impedance : 120 ohm IncludedComponents : No ItemName : Wirewound Resistors - Through Hole 12watt 250ohm 5% Axial ItemPackageDimensions_Height : 16 inches ItemPackageDimensions_Length : 23 inches ItemPackageDimensions_Width : 18 inches ItemPackageQuantity : 1 ItemTypeKeyword : single-resistors Manufacturer : OHMITE Material : Metal Material1 : Plastic Material2 : Metal ModelNumber : B12J250E NominalWallThickness : 1.3 month NumberOfItems : 1 PartNumber : B12J250E ProductDescription : OHMITE - B12J250E - RESISTOR WIREWOUND; 250 OHM; 12W; 5% ProductSiteLaunchDate : 2013-12-29T16:20:07.564Z SheetCount : 30 SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 31160000 Voltage : 12 volts