Precision Electronic Components Mfg. Co. Supplies Slotted Ceramic Encased PCB Mountable Resistor. Precision Electronic Components Mfg. Co. Has received an ISO 9001:2000 certification. Slotted Ceramic Encased PCB Mountable Resistor is used in the field of Defence Electronics, Avionics, and Instrument Technology etc. Slotted Ceramic Encased PCB Mountable Resistor is available from 1W to 7W Wire wound Ceramic Resistors with built in circuit breakers to protect equipment.