The invention discloses a PCB type TVS 
diode package and a preparation process thereof, comprising a BT resin PCB board and an 
epoxy resin, wherein the outer surface of the BT resin PCB board is provided with a TVS tube, and the 
epoxy resin is arranged on the upper surface of the TVS tube. A BT resin (bismaleimide (BMI) and 
triazine-based resin) is use as a substrate for that PCB positive and negative sides of the 
package and the preparation proces of the PCB-type TVS 
diode, and an 
etching line is used as a conduction, the substrate replaces a 
metal frame, and then the process flow is taken asa 
solid crystal, a bonding line, a 
stamping die, a 
cutting, a testing, a braiding and a warehousing; BT resin has a very 
high adhesion to the external 
sealant (
epoxy resin) when molding, It is much higher than the combination with the 
metal frame, so that the product has higher 
air tightness, meanwhile, the expansion coefficient is close when the 
metal frame is heated and expanded, and the 
internal stress is smaller, so as to avoid the breakage problem of the metal frame when the metal frame is welded at the 
client end, and the product has higher reliability and quality.