TEH100 Series F e a t u r es • 100 Watt power rating at 25°C case temperature 100 Watt Thick Film Power Resistors for High •Non-inductive performance Frequency and Pulse Loading Applications •Low thermal resistance •RoHS compliant design Ohmite offers the totally • TO-247 package configuraencapsulated and insulated tion TO-247 package for low ohmic value and non-induc- • Single screw mounting tive design for high-frequen- simplifies attach-ment to cy and pulsing applications. the heat sink Ideal use is for power sup• A totally molded housing plies. This series is rated for enviromental protection at 100 Watts mounted to a • Non-Inductive design heat sink. • Resistor package totally insulated from heat sink c h a r a c te r i st i c s Resistor thick film on alumina Installation, max. 0.9 Nm using an M3 screw and a Torque compression washer Derating linear, 100% at 25°C to 0% at 175°C Resistance range 0.05Ω to 1MΩ, other values on request Resistance tol. ±1%, ±2%, ±5%, ±10% Max. working voltage 350V Temperature 3R to 10R: 100ppm/°C Coefficient 1R to 2R99: 250ppm/°C Below 1R: 500-1000+ppm/°C (Contact factory for exact values below 1R) Insulation Resistance 10GΩ min. Dielectric Strength 1,800 VAC 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. Load life MIL-R-39009D 4.8.13 , 2,000 hours at rated power Performance ∆R ≤ ±(1.0% + 0.0005Ω) Moisture resis- -10°C - +65°C, RH>90%, cycle ∆R ≤ ±(0.50% + 0.0005Ω) tance 240 h Short time 1.5 times rated power and overload V(DC) ≤1.5Vmax for 5 seconds Thermal shock GJB360A-96 method 107, Cond. F Dielectric GJB360A-96 method 301, strength (1,800V AC, 60s) Terminal GJB360A-96 method 211, strength Cond. A (Pull Test) 2.4N High frequency GJB360A-96 method 204, vibration Cond. D ∆R ≤ ± (0.50% + 0.0005Ω) ∆R ≤ ±(0.50% + 0.0005Ω) ∆R ≤ ± (0.15% + 0.0005Ω) ∆R ≤ ±(0.20% + 0.0005Ω) ∆R ≤ ±(0.40% + 0.0005Ω) Derating 100 Percent Rated Power Case high temperature plastic Lead Material Tinned Copper Test Conditions Of Test 80 60 40 20 0 0 25 50 75 100 125 150 Bottom of base plate Temperature, °C 175 Derating (thermal resistance): 0.666W/°K (1.5K/W). Without a heatsink, when in free air at 25°C, the TEH100 is rated for 3.5W. Derating for temp. above 25°C is 0.0234W/°K. Graphed value is only valid when using a thermal conduction to the heatsink Rthcs<0.025°K/W. This value can be reached by using thermal transfer compound with a heat conductivity of 1W/mK. The flatness of the cooling plate must be better than 0.05mm overall. The roughness of the surface should not exceed 6.4µm. The case temperature is to be used for the definitiion of the applied power limit. The case temperature measurement must be made with a thermocouple contacting the center of the component mounted on the designed heat sink. Thermal grease should be applied properly (continued) 154 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] TEH100 Series 100 Watt Thick Film Power Resistors for High Frequency and Pulse Loading Applications dimensions (in./mm) 0.610~0.630" (15.49~16.01mm) 0.185~0.205" (4.69~5.21mm) 0.200~0.220" (5.07~5.59mm) 0.805~0.825" (20.44~20.96mm) ø0.139~0.147" (3.53~3.73mm) 0.080~0.140" (2.03~3.55mm) 0.520~0.620" “M” option (13.21~15.75mm) 0.807~0.886" “L” option (20.50~22.50mm) 0.136~0.150" (3.45~3.81mm) 0.390~0.410" (9.90~10.42mm) 0.022~0.042" (0.55~1.07mm) “M” 0.054~0.066" (1.37~1.67mm) “L” 0.042~0.054" (1.07-1.37mm) 0.085~0.105" (2.15~2.67mm) o r d e r i n g i n f o r m at i o n Package Code M = standard L = long terminals RoHS Compliant Non-compliant version unavailble TEH100M10R0JE Series Ohms R = Decimal Example: 2R50 = 2.50Ω 25R0 = 25Ω 100R = 100Ω 1K00 = 1000Ω Tolerance F = 1% J = 5% Standard part numbers Ohms 0.05 0.075 0.1 0.2 0.5 1 2 2.5 3 5 7.5 10 15 20 25 50 100 270 470 750 1K 5K 7.5K 5% tolerance TEH100MR050JE TEH100MR075JE TEH100MR100JE TEH100MR200JE TEH100MR500JE TEH100M1R00JE TEH100M2R00JE TEH100M2R50JE TEH100M3R00JE TEH100M5R00JE TEH100M7R50JE TEH100M10R0JE TEH100M15R0JE TEH100M20R0JE TEH100M25R0JE TEH100M50R0JE TEH100M100RJE TEH100M270RJE TEH100M470RJE TEH100M750RJE 1% tolerance TEH100M1R00FE TEH100M2R00FE TEH100M2R50FE TEH100M3R00FE TEH100M5R00FE TEH100M7R50FE TEH100M10R0FE TEH100M15R0FE TEH100M20R0FE TEH100M25R0FE TEH100M50R0FE TEH100M100RFE TEH100M1K00JE TEH100M5K00JE TEH100M7K50JE 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 155