MRF Techniques, Inc. DBA RF Techniques (RFT) is a leading designer and manufacturer specializing in high reliability brazed High Power Resistors, High Power Attenuators and High Power Terminations in Aluminum Nitride (AlN), Alumina & Beryllium Oxide (BeO) substrates for the Microwaves & RF applications. RFT products are 100% manufactured in USA.
RFT utilizes a high temperature brazing process that yields the lowest possible thermal resistance for higher temperature device operation. This proprietary processing also ensures higher reliability and longer performance life, while the high temperature fluxless brazing process eliminates the concerns of lead separation during soldering operations and provides a joint without corrosive flux residue. This proven high temperature brazing process improves component reliability and power derating up to 250 deg C. These high reliability resistor products will withstand substantial forces applied to the lead due to different rates of contraction and expansion of the lead during temperature variations.
RFT also offers a wide range of surface mount packages in Aluminum Nitride (AlN), Alumina & Beryllium Oxide(BeO) substrates for the RF or DC applications. Since RF Techniques screen print the metallization in house, we have the capability to modify the part per customers drawing with minimal cost. RF Techniques uses scan trim method to trim the resistors up to 1% tolerance. Scan trimmed parts perform better than the lower cost plunge cut used by most suppliers. Since the assembly is done in house, we have more control on the process.
RFT has the capability to custom manufacture to customers specifications. RF Techniques R&D and manufacturing facility is located in San Jose, California, USA. RFT is certified to ISO standard 9001:2008.
RFT products are used in many applications such as: Power amplifiers, Power combiners, Laser system, Power supplies, Isolators, Broadcasting, Antennas, Radio Communications, Test & measurement, Medical equipment (power supply), Base station/ Wireless, Oil rigging equipment, etc.
Non-Corrosive Brazed Joints: Brazing is done over 800C in an inert atmosphere without using any flux. This process eliminates the corrosion found with typical soldered joints.
Higher Temperature Operation: Brazed devices offer a significant advantage over the soldered devices in power handling capability due to superior power derating capability. Brazed devices are power derated to flange temperature up to 250 degree C. This high temperature capability provides the user with improved system reliability and a wider margin of performance under abnormal operating conditions. RFT devices are also capable of withstanding much higher temperature for short period of time without damage. (The part itself will survive at higher temperature but the resistor stability is not guaranteed at higher temperature as well as the epoxy used to attach the alumina protective cover will not withstand higher operating temperature than 250 degree C. ) High temperature capability provides the user with improved system reliability and a wider margin of performance under abnormal operating conditions. Typical problem of joint separation found in soldered part is eliminated with brazed construction.
Better Lead Strength: Silver plated Nickel tabs of the brazed parts gets annealed as they go through the brazing process. Annealed leads are softer and easy for the customer to bend and form without damaging them. Typical lead pull strength is up to 5 lbs. Brazed device will withstand substantial forces applied to the lead due to different rates of contraction and expansion of the lead during temperature variations. The customer need not have to worry about leads coming off during soldering operations.