Raleigh, N.C. Stackpole Electronics added 30 W and 50 W offerings to their TR series of TO-220 style, power film resistors. The TR series was previously offered in 20W and 35W configurations. This style of resistor is normally mounted along with various other power ICs to a heat sink maintained at 25°C. It is this technique which allows these small size parts to dissipate large amounts of power. The TO-220 package is a configuration withwhich many power electronics engineers are familiar and comfortable.
The TR series is available in resistance values from 50 mΩ to 10 KΩ, in tolerances as low as 0.5% and TCR's as low as 50 ppm. It is a low-inductance part with an operating voltage of 350 V and is RoHS-compliant. The TR series is suitable for a variety of power applications including high-speed switching power supplies, snubbers, load resistors, pulsed applications, UPS systems, voltage regulators, RF power amplifiers and industrial machinery control.
Pricing: Begins at $1.20 each in 1,000-piece quantities
Stackpole Electronics, 919-850-9500, www.seielect.com