High frequency PCBs with aluminum heat sink for telecommunication and aerospace industries using customer specific electrically and thermally conductive bonding films. Microwave PCB’s: On Time Circuits Inc. has enormous experience and technical expertise in the manufacturing of time critical, high technology RF circuits. The company works closely with its worldwide customers to deliver prototype-to-large volume manufacturing of circuits. During this process our engineering staff discusses with the customers’ staff to come up with the optimized designs for high quality, low cost and speedy delivery.