TDH35PR750J

TO220 35 Watt Thick Film Power Resistors for Surface Mount, Including Metal Tab 4.5mm 7.87mm 1.1mm ±0.5 0.5mm 0.5mm Land Pattern 8.6mm 1.5mm ±0.5 1.4mm 4.8mm 8.51mm 2.63mm 1.5mm ±0.5 0.9mm 3.81mm 0.5mm 1.65mm 2.54mm 5.08mm TO220 style power package for surface mounting applications; 35W power rating at 25°C case temperature Soldering note: During surface mount soldering the soldering temperature profile must not cause the metal tab of this device to exceed 245°C! PERFORMANCE CHARACTERISTICS Derating Material Lead Material: German Silver (Alpacca) 100% @ 25°C to 0% @ 150°C curve referenced to case temperature Dielectric Strength 1,800VAC Max. Mounting Torque 0.9Nm Operating Temperature Range -55°C to +150°C Temperature Coefficient 10Ω and above, ± 50ppm/°C, referenced to 25°C, ∆R taken at +105°C. Between 1Ω and 10Ω, ± (100ppm+0.002Ω)/°C, referenced to 25°C,∆R taken at +105°C. Electrical Resistance Range: 0.1Ω to 10KΩ other values on request Tolerance: ±1% to ±10% (0.5% on request) Max. Operating Voltage: 350V Insulation Resistance: 10GΩ min. Power Rating: Depends upon case temperature. See Derating Curve. Working Temperature Range: 55°C to +175°C DERATING 100 35 80 28 60 21 40 14 20 7 Percent Rated Power 10.1mm 45° SPECIFICATIONS • 35 Watt power rating at 25°C • SMD - TO-220 package configuration • Heat resistance to cooling plate: Rth <4.28 °K/W • A molded case for environmental protection. • Resistor element is electrically insulated from the metal sink tab. 0 0 0 25 50 75 100 125 Case Temperature, °C 150 175 Derating (thermal resistance): 0.23W/°K (4.28°K/W). The case temperature is to be used for purposes of establishing 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 propperly. ORDERING INFORMATION TEST DATA Load Life (MIL–R–39009, 2,000 hours ∆R ±(1.0% +0.01Ω) T D H 3 5 P R 1 0 0 J Moisture Resistance (MIL–Std–202, Method 106) ∆R =(0.5% +0.01Ω) max. Style Short Time Overload (2 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds) ∆R ±(0.3% + 0.01Ω) max. Thermal Shock (MIL–Std–202, Method 107, Cond. F) ∆R =(0.3% + 0.01Ω) max. Terminal Strength (MIL–Std–202, Method 211, Cond. A (Pull Test) 2.4N) ∆R =(0.2% + 0.01Ω) max. Vibration, High Frequency (MIL-STD-202, method 211, cond. A (pull test) 2.4N) ∆R =(0.2% + 0.01Ω) max. 1 Rated Power, W TDH35 Series FEATURES Ohms R = Decimal Example: R100 = 0.10 1R00= 1.0 10K0= 10,000 Tolerance F = 1% J = 5% K = 10% Ohmite Manufacturing Company 3601 Howard St., Skokie, IL 60076 • Tel. 847-675-2600 • Fax 847-675-1505 • www.ohmite.com • ohmite@wwa.com