THJP ThermaWick™ Thermal Jumper SMD Chips Vishay / Thin Film THJP ThermaWick™ Thermal Jumper Surface Mount (SMD) Chips are designed to provide an electrically isolated thermal conductive pathway to a ground plane or heat sink while maintaining the electrical isolation of the device. Vishay / Thin Film THJP ThermaWick Thermal Jumper SMD Chips are constructed with aluminum nitride substrates in both tin / lead (SnPb) and lead (Pb)-free wraparound termination styles. The low capacitance of THJP Thermal Jumper SMD Chips makes them an excellent choice for high-frequency and thermal-ladder applications.