Rated Power, Watts tch series 35 Watt TO220 Package Thick Film Power Ohmites TCH35 TO220 package resistor provides 35W of steady state power when properly used in todays well defined heat sink applications. These very low induction resistors are built under proprietary processes that deliver more power handling Features applications capability than other TO220 package resistors of similar size. 35W Power Rating 25C Switching Power Supplies Standard terminal forms are provid- Very Low Inductance Design Snubbers ed for manual or automatic insertion. Single Screw Mounting High Frequency A single screw mounting tab con- nects to the heat sink and should be Low Thermal Resistance to Voltage Regulation accompanied by the use of a thermal Heat Sink RTH<4.28C/W Low Energy Pulse Loading compound. The TCH35 Series offers a Resistance Element is low thermal resistance to the heat sink Electrically Insulated from of <4.28C/W. Metal Heat Sink Mounting Tab characteristics Resistance Range 0.1 to 10K (higher values on request subject Test Condition Result R to derating) Load Life MIL-R-39009, 2000 Hours (1.0% +0.01) 5% standard 1% available on request Resistance Rated Pwr Tolerance: Thermal MIL-R-STD-202, Method (0.3% +0.01) max Temperature Referenced to 25C, R taken at +105C Shock 107, Cond. F Coefficient 10 and above: 50 ppmC High Freq MIL-R-STD-202, Method (0.2% +0.01) max For under 10: Vibration 204, Cond. D 0R6 - 9R9: 100PPM Terminal MIL-R-STD-202, Method (0.2% +0.01) max 0R4 - 0R59: 150PPM Strength 211, Cond. A (Pull Test) 0R2 - 0R39: 250PPM 2.4N 0R1 - 0R19: 500PPM 0R05 - 0R09: 1000PPM MIL-R-STD-202, Method (0.5% +0.01) max Moisture 106 Resistance Max. Operating 350V Voltage Derating Dielectric Strength 1800 VAC TAH/TCH 10G min. Insulation 100 20/35 Resistance Momentary 2x rated power for 5 seconds as long as the 80 16/28 Overload applied voltage 1.5 times the continuous operating voltage, where R (0.3% + 0.01) 60 12/21 max TCH Terminal Material Copper 40 8/14 TAH Terminal Plating Lead Free Solder (97% Tin, 3% Silver) 20 4/ 7 0.9 Nm Maximum Torque Power Rating 35 Watts 25C case temperature see derat- 0 0 ing curve, below 0525 0 75 100 125 150 175 Bottom of base plate Temperature, C Working -55C to +175C Temperature Range Solder Process The TCH35 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 149 Percent Rated Power tch series 35 Watt TO220 Package Thick Film Power dimensions (in./mm) 0.3900.410 0.0470.055 (9.9110.41mm) (1.201.40mm) 0.1120.120 (2.853.05mm) 0.2300.250 (5.856.35mm) 0.5710.591 (14.5015.00mm) 0.0460.054 0.157 max. 0.1590.190 (1.171.37mm) (5.00mm) (4.064.82mm) 0.0270.034 0.0220.028 0.5000.579 (0.700.86mm) (0.550.70mm) (12.7014.70mm) 0.0800.089 (2.052.25mm) 0.1900.210 (4.835.33mm) ordering inFormation Standard Part Numbers TCH35P100RJE TCH35P220RJE TCH35P33R0JE TCH35P510RJE TCH35PR200JE Tolerance F = 1% TCH35P10K0JE TCH35P22R0JE TCH35P390RJE TCH35P51R0JE TCH35PR220JE Package Code J = 5% Standard TCH35P10ROJE TCH35P240RJE TCH35P39R0JE TCH35P5K10JE TCH35PR240JE TCH35P150RJE TCH35P24R0JE TCH35P3K30JE TCH35P5R10JE TCH35PR330JE TCH35P15R0JE TCH35P2K00JE TCH35P3K90JE TCH35P5R60JE TCH35PR390JE TCH35P10R0JE TCH35P1K00JE TCH35P2K20JE TCH35P3R30JE TCH35P750RJE TCH35PR470JE Series Ohm Value RoHS Compliant TCH35P1K50JE TCH35P2K40JE TCH35P3R90JE TCH35P75R0JE TCH35PR510JE Example: Non-compliant TCH35P1R00JE TCH35P2R00JE TCH35P470RJE TCH35P7K50JE TCH35PR560JE 2R40 = 2.4 Ohms version unavailable TCH35P1R50JE TCH35P2R20JE TCH35P47R0JE TCH35P7R50JE TCH35PR750JE 2K40 = 2400 Ohms TCH35P200RJE TCH35P2R40JE TCH35P4K70JE TCH35PR100JE TCH35PRO50JE TCH35P20R0JE TCH35P330RJE TCH35P4R70JE TCH35PR150JE 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 es- tablish the power rating. Best technique is to attach a thermocouple to the side of the base plate of the resis- tor. Temperature of plastic housing or heat sink cannot be used to establish rating of the resistor. 150 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 0.1390.148 (3.553.75mm)