You are looking at a hard to find replacement transistor for the Sonix IV Family of Ultrasonic Cleaners. You will find the part number SIV 300004 as shown in the pics above.  
This item will include a tube of thermal paste to complete your transistor replacement.



This transistor replacement kit includes the following

• 1 Transistor SIV 300004
• 1 Tube of thermal paste

NOTE: If you are considering this item it is assumed that you have the knowledge, skills and tools to troubleshoot and solder this replacement part onto your existing PC board. 

**Returns cannot and will not be accepted on installed or used electronic parts.  

**The images of the PC boards are for reference only this sale does NOT include the PC Boards in the images