Specification Brand : Nanjefly BulletPoint : Package contents:BF494 (5pieces) BulletPoint1 : The model and specifications are the same as those written in the title BulletPoint2 : Each of our packages is packaged in a reliable and secure manner. Please carefully check for any goods upon receipt. If there is any damage during transportation, please contact me. BulletPoint3 : There are multiple manufacturers for individual electronic component models, and the production dates may also vary. Therefore, the pictures we provide are for reference only. BulletPoint4 : The commonly used packaging forms for transistors include metal packaging and plastic packaging, and the arrangement of pins has a certain pattern BulletPoint5 : According to the different structures and working principles, transistors can be divided into two types: NPN type and PNP type. The collector and emitter of NPN type transistors are both N-type semiconductors, while the base is P-type semiconductors; On the contrary, The collector and emitter of PNP type transistor are both P-type semiconductors, while the base is N-type semiconductors. Color : As Shown ExternallyAssignedProductIdentifier : 6139047753021 ItemName : 5 Pieces BF494 NPN Medium Frequency Transistor ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : bjt-transistors Manufacturer : Nanjefly NumberOfItems : 1 PartNumber : DZZD1459-506-2232396581 ProductDescription : 5 pieces BF494 NPN medium frequency transistor