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Heat Sinkable IS Series Resistor

Heat Sinkable IS Series Resistor
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THICK FILM IS Series HEAT SINKABLE Ultra Low Profile Power Resistors F e at u r e s • Heatsinkable • Low profile • High power • Pulse handling capability • Non-flammable • Low inductances • Available with fast-on terminals or wire leads • Rugged construction • Ultra low profile thickfilm on steel • 175W to 270W sizes • Single fixing heatsink mountable • Braking resistors • In-rush current limiter • Bleeder resistor • Power switching • Soft charging Dielectric Termination Glass Overcoat Resistive Glaze Stainless Steel TCR <250ppm (surface temp less than 150°C) Hot spot surface 200°C max. temperature Over-vlotage rating 5X rated power for up to for up to 1 second Resistive element Thick Film Derating element surface temp. at 100% to 0% power at 200°C surface temp. % Rated Power Working voltage Not to exceed 300V Power rating dependent on mounting and heatsink thermal capacity Maximum element 365°C temperature Pulsed load at full Max. 1%ΔR; (see Fig 1) pulse power rating Mounted on a 0.06°C/W heatsink with 1,000 cycles forced air cooling, air temperature 25°C (ref AH32430 12" long) Solder Silver solder is recommended for IS Series resistors. Leaching of the silver in the termination will occur if non-silver solder is used. 60/40 tin-lead solders are not recommended for use with the IS Series product. 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 50 100 150 200 Resistor Surface Temp., C THIS PRODUCT IS DESIGNED FOR USE WITH PROPER HEATSINKING. Maximum base plate temperature of the resistor must be monitored and kept within specified limits to establish the power rating. Best technique is to attach a thermocouple to the side of the base plate of the resistor.

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THICK FILM IS Series HEAT SINKABLE Ultra Low Profile Power Resistors d i m e ns i ons T e r m i n a t i on O p t i ons Solder pad only SnAg (96S) Flying leads Push-on connectors O R D ERI N G I N F O R M ATI O N Tolerance K = 10% RoHS M = 20% Compliant IS200C47RKE Series Wattage Termination Resistance Insulated 175 A = Tinned pad 3 digits Steel 200 B = Soldered lead 47R = 47Ω 250 C = Fast on terminal 270 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

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