Features • 35W Power Rating @ 25°C • Very Low Inductance Design • Single Screw Mounting • Low Thermal Resistance to Heat Sink @ RTH<4.28°C/W • Resistance Element is Electrically Insulated from Metal Heat Sink Mounting Tab a pp l i c a t i o n s • Switching Power Supplies • Snubbers • High Frequency • Voltage Regulation • Low Energy Pulse Loading TCH Series Sp e c i f i c a t i o n s Electrical Resistance Range: 0.1Ω to 10KΩ (higher values on request subject to derating) Resistance Tolerance: ± 5% standard ± 1% available on request Temperature Coefficient: 0.390–0.410" 0.047–0.055" (9.91–10.41mm) (1.20–1.40mm) Referenced to 25°C, ∆R taken at +105°C 0.112–0.120" 10Ω and above: ±50 ppm°C (2.85–3.05mm) For under 10Ω: 0.230–0.250" 0R6 - 9R9........ 100PPM (5.85–6.35mm) 0.571–0.591" 0R4 - 0R59...... 150PPM (14.50–15.00mm) 0R2 - 0R39...... 250PPM 0R1 - 0R19...... 500PPM 0R05 - 0R09.... 1000PPM 0.046–0.054" 0.157" max. 0.159–0.190" Max. Operating Voltage: 350V (1.17–1.37mm) (5.00mm) (4.06–4.82mm) Dielectric Strength: 1800 VAC 0.027–0.034" 0.022–0.028" Insulation Resistance: 10GΩ 0.500–0.579" (0.70–0.86mm) (0.55–0.70mm) min. (12.70–14.70mm) 0.080–0.089" Momentary Overload: 2x rated (2.05–2.25mm) power for 5 seconds as long as the applied voltage ≤1.5 times 0.190–0.210" (4.83–5.33mm) the continuous operating voltage, where ∆R ±(0.3% + 0.01Ω) max Terminal Material: Copper Terminal Plating: Lead Free T e s t d ata Solder (97% Tin, 3% Silver) Load Life MIL-R-39009, 2000 Hours @ Rated Pwr ∆R = ± (1.0% + 0.01) Ω Maximum Torque: 0.9 Nm Thermal Shock MIL-R-STD-202, Method 107, Cond. F ∆R = ± (0.3% + 0.01) Ω max Power Rating: 35 Watts @ 25°C High Freq Vibration MIL-R-STD-202, Method 204, Cond. D ∆R = ± (0.2% + 0.01) Ω max case temperature; see derating Terminal Strength MIL-R-STD-202, Method 211, Cond. A ∆R = ± (0.2% + 0.01) Ω max curve, below (Pull Test) 2.4N Working Temperature Range: Moisture Resistance MIL-R-STD-202, Method 106 ∆R = ± (0.5% + 0.01) Ω max -55°C to +175°C Solder Process: The TCH35 cannot exceed 260°C for more than 10 seconds during soldering process. 35 Watt TO220 Package Thick Film Power ø0.139–0.148" (3.55–3.75mm) Ohmite’s TCH35 TO220 package resistor provides 35W of steady state power when properly used in today’s well defined heat sink applications. These very low induction resistors are built under proprietary processes that deliver more power handling capability than other TO220 package resistors of similar size. Standard terminal forms are provided for manual or automatic insertion. A single screw mounting tab connects to the heat sink and should be accompanied by the use of a thermal compound. The TCH35 Series offers a low thermal resistance to the heat sink of <4.28°C/W. D e r a ti n g C u r v e p u l s e - fo r m E-function, time between two pulses: 1 sec. TAH/TCH 16/28 60 12/21 TCH 40 8/14 TAH 20 4/ 7 100,000 10,000 TCH35 TDH35 1,000 TAH20 Energy (Ws) 80 Percent Rated Power 20/35 Rated Power, Watts 100 100 10 1 0.1 0 0 0 25 50 75 100 125 Case Temperature, °C 150 175 0.01 0.001 0.01 Package Code TCH35P10R0JE Series Ohm Value Example: 2R40 = 2.4 Ohms 2K40 = 2400 Ohms RoHS Compliant Non-compliant version unavailable Check product availability at www.ohmite.com 1 10 Time, ms. 100 1,000 10,000 100,000 St a n d a r d p a r t n u m b e r s O RDER I N G I N F O RMA T I O N Tolerance F = 1% J = 5% Standard 0.1 TCH35P100RJE TCH35P10K0JE TCH35P10ROJE TCH35P150RJE TCH35P15R0JE TCH35P1K00JE TCH35P1K50JE TCH35P1R00JE TCH35P1R50JE TCH35P200RJE TCH35P20R0JE TCH35P220RJE TCH35P22R0JE TCH35P240RJE TCH35P24R0JE TCH35P2K00JE TCH35P2K20JE TCH35P2K40JE TCH35P2R00JE TCH35P2R20JE TCH35P2R40JE TCH35P330RJE TCH35P33R0JE TCH35P390RJE TCH35P39R0JE TCH35P3K30JE TCH35P3K90JE TCH35P3R30JE TCH35P3R90JE TCH35P470RJE TCH35P47R0JE TCH35P4K70JE TCH35P4R70JE TCH35P510RJE TCH35P51R0JE TCH35P5K10JE TCH35P5R10JE TCH35P5R60JE TCH35P750RJE TCH35P75R0JE TCH35P7K50JE TCH35P7R50JE TCH35PR100JE TCH35PR150JE TCH35PR200JE TCH35PR220JE TCH35PR240JE TCH35PR330JE TCH35PR390JE TCH35PR470JE TCH35PR510JE TCH35PR560JE TCH35PR750JE TCH35PRO50JE Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 57