Rated Power, Watts aht series 20 Watt TO220 Package Thick Film Power Features applications The TAH20 is a completely encapsulated thick film resistor in the TO220 package 20 Watt Power Rating at Frequency Conversion outline. Rated for 20 watts 25C case 25C Case Temperature High Frequency Balancing temperature, these resistors are elec- High Pulse Tolerant Design Snubbers trically isolated, and molded in a high Quick-snap Molded Package temperature case. Designed for heat sink mounting, Very Low Inductance Design the symmetrical package is ready for Resistor Package Electrically use with snap-on style heat sinks (we Isolated from Heat Sink recommend use of thermal grease). The Low Thermal Resistance to TAH20 Series has very low inductance, Heat Sink RTH<6.25C/W and available in a wide range of resis- tance values in standard 5% tolerance. Tube Packaging Available 1% tolerance available by special order. characteristics Load Life MIL-R-39009, 2000 Hours R = (1.0% Resistance Range 0.05 to 10K, other values available upon Rated Pwr + 0.001) request Thermal Shock MIL-R-STD-202, Method R = (0.3% Tolerance <0.1: 5% only 107, Cond. F + 0.001) max 0.1-1M: 5% std. 1% available MIL-R-STD-202, Method R = (0.2% High Freq Temperature Referenced to 25C, R taken at +105C 204, Cond. D + 0.001) max Vibration Coefficient 1 to 10: (100ppm+0.002)/C Terminal Strength MIL-R-STD-202, Method R = (0.2% 10 & up: 50ppm/C 211, Cond. A (Pull Test) + 0.001) max Max Operating 350V 2.4N Voltage Moisture MIL-R-STD-202, Method R = (0.5% 1,800 VAC Resistance 106 + 0.01) max Dielectric Strength Power Rating 20W 25C case temperature see derating curve, below Derating Insulation Resistance 10G min. TAH/TCH 100 20/35 Momentary Overload 2x rated power for 5 seconds where applied voltage 1.5 times max. operating voltage. 80 16/28 R (0.3% + 0.001) max. Case Material KMC-125 epoxy 60 12/21 TCH Copper Terminal Material 40 8/14 TAH Terminal Plating Lead Free Solder (97% Tin, 3% Silver) 20 4/ 7 Mounting Requires the use of a snap-on style heat sink. A thermal compound should be properly 0 0 applied. 0 2550 75 100 125 150 175 Bottom of base plate Temperature, C Solder Process The TAH20 cannot exceed 260C for more than 10 seconds during soldering process. (continued) 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 145 Percent Rated Power aht series 20 Watt TO220 Package Thick Film Power dimensions (iin./mm) 0.4000.420 0.1150.135 (10.1510.67mm) (2.923.44mm) 0.6300.650 (16.0016.52mm) 0.1000.160 (2.544.06mm) 0.4500.550 0.0450.055 (11.4313.97mm) (1.141.40mm) 0.0260.034 0.0160.024 (0.660.86mm) (0.400.60mm) 0.1900.210 0.0600.080 (4.825.34mm) (1.522.04mm) ordering inFormation Tolerance F = 1% Package Code J = 5% Standard TAH20P10R0JE Series Ohm Value RoHS Compliant Example: Non-compliant 2R40 = 2.4 Ohms version unavailable 2K40 = 2400 Ohms Standard Part Numbers TAH20P100RJE TAH20P220RJE TAH20P33R0JE TAH20P4R70JE TAH20PR100JE TAH20P10K0JE TAH20P22R0JE TAH20P390RJE TAH20P510RJE TAH20PR150JE TAH20P10R0JE TAH20P240RJE TAH20P39R0JE TAH20P51R0JE TAH20PR200JE TAH20P150RJE TAH20P24R0JE TAH20P3K30JE TAH20P5K10JE TAH20PR220JE TAH20P15R0JE TAH20P2K00JE TAH20P3K90JE TAH20P5R10JE TAH20PR240JE TAH20P1K00JE TAH20P2K20JE TAH20P3R30JE TAH20P750RJE TAH20PR330JE TAH20P1K50JE TAH20P2K40JE TAH20P3R90JE TAH20P75R0JE TAH20PR390JE TAH20P1R00JE TAH20P2R00JE TAH20P470RJE TAH20P7K50JE TAH20PR470JE TAH20P1R50JE TAH20P2R20JE TAH20P47R0JE TAH20P7R50JE TAH20PR510JE TAH20P200RJE TAH20P2R40JE TAH20P4K70JE TAH20PR050JE TAH20PR750JE TAH20P20R0JE TAH20P330RJE 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. Temperature of plastic housing or heat sink cannot be used to establish rating of the resistor. 146 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com