Lab Circuits extend its UL certification with two new parameters.
-DSR: With this parameter our printed circuit boards can be used as direct support of current-carrying part according to Standard UL-796.
-CTI (Comparative Tracking Index). CTI value is obtained by applying a voltage which causes tracking on a pcb after 50 drops of an electrolyte solution (ammonium chloride 0.1%) have fallen on the material.
All materials used in the production of M and T circuit types have CTI- 3. For type C, there is also CTI- 3 compliant material available . For CTI-3, a voltage of 175 to 250 volts is needed to cause tracking on the circuit.
** We recall that the client should specify the PCBs which must be certified UL and these new parameters if necessary.