Riedon's Low cost TO-Style Film Power Resistor Designs Provide Superior High-frequency Performance
Alhambra, California, USA – Riedon, a specialist manufacturer and supplier of cutting-edge resistive solutions, has developed a cost-competitive power resistor design that is non-inductive and achieves superior performance in high-frequency applications and high-speed pulse circuits. The various product series within Riedon’s PF family of TO-style resistors all use an advanced power film formed on a heat-conducting alumina substrate that is metalized and soldered to a heat-dissipating copper plate tab, providing devices that offer excellent thermal resistance in small-size, thin-profile TO-style packages for high-density applications.
The various package configurations available cover power ratings from a few Watts up to 600 Watts in both through-hole and surface mountings: These start with the PF1260 series in an epoxy-molded TO-126 leaded package, with resistances in the range 0.01Ω to 51kΩ, tolerances from ±1%, a temperature coefficient (TCR) from ±50ppm and provide up to 20W dissipation (with a heatsink). The PF2200 and PF2470 series offer a similar specification but with dissipation up to 50W and 140W respectively in leaded TO-220 and TO-247 packages. For the ultimate in power dissipation, the PF2270 series uses the screw-terminal TO227 style package to handle up to 300W, when attached to an appropriate heatsink and subject to temperature derating. Finally, the PFS35 series provides a solution for surface mounting, using a TO-263 housing (D-Pak) to provide 35W dissipation when used with a heatsink or 2W with a simple solder pad.
“All our TO-style thin-film resistors combine superior performance with the full power-dissipation capabilities these packages offer”, said Phil Ebbert, Riedon’s VP of Engineering, “In addition, the low-inductance design makes these parts ideal for high frequency applications, such as wireless communications, or in systems that need to withstand short-duration, high-energy pulses, for example, medical equipment.”
Riedon’s full range of TO-style power resistors are available from Digi-Key.
For further information and reader enquiries:
Frieda Hovsepian, Riedon Inc, 300 Cypress Avenue, Alhambra, CA 91801, USA
Tel:Â +1 (626) 284-9901Â frieda@riedon.com
Fax:Â +1 (626) 284-1704Â www.riedon.com
About Riedon Inc.
For more than 45 years, since its formation in 1960, Riedon has been at the cutting edge of resistive solutions, supplying Wirewound, Thick & Thin Film, and also Foil resistive products to industries as diverse as Aerospace, Military and Instrumentation.
Riedon employs more than 130 team members worldwide and has manufacturing, technical support and sales facilities in the U.S., Europe, Asia, and Mexico.
