Description: <br>The transistor is a semiconductor device that controls the current and is used to amplify a weak signal into a larger electrical signal. Also used as a contactless switch. <br> <br>Features: <br> <br>This transistor is made of high quality electronic elements, durable for use. <br>40pcs transistor are enough for use. <br>8 type of transistor can meet your different needs. <br>Control the current and amplify a weak signal into a larger electrical signal. <br>It is the core element for the electronic circuit. <br> <br>Specification: <br>Model: 7805 7809 7812 7815 7905 7912 7915 LM317 <br>Type: JFET <br>The channel type: N channel <br>Conduction mode: depletion mode <br>Application: A/Broadband amplification <br>Size: Approx. 28.8*10mm / 1.13*0.39inch <br>Weight: 73g <br>Quantity: 40pcs(5pcs each type, 8types in total) <br> <br>Package Included: <br>40 x Transistor<br>1、This transistor is made of high quality electronic elements, durable for use. <br>2、40pcs transistor are enough for use. <br>3、8 type of transistor can meet your different needs. <br>4、Control the current and amplify a weak signal into a larger electrical signal. <br>5、It is the core element for the electronic circuit.