TA Series Ohmite’s original Power Chip resistors are designed from our thick film on alumina substrate technology. These planar packages yield space saving, 10W/ in2 power densities that require over 50% less board space than other radial packages. Convection cooling is maximized by the planar package configuration which dissipates heat well above board level. Ohmite’s power chip resistors have a 125% higher operating temperature range than competitive product of similar design. High temperature solder and in-process plating keep terminations secure under self-heating effects by preventing re-flow from full power operation. Flexible packaging schemes make these resistors ideal for power supplies, audio amplifiers, video fly-back, and other power control applications. Power Chip Resistors Thick Film on Alumina Substrate ® 3, 5, 7.5 & 10 watt H typical PC board 0.17"/4.32mm 0.07"/1.78mm P L 0.10"/2.54mm 0.02" x 0.015" Pins 25, 50 & 100 watt 0.040" / 1.02 mm L 0.240" / 6.10 mm H 0.300" / 7.62 mm 0.020" / 0.51 mm typ. 0.070" / 1.78 mm P 0.150" / 3.8 mm ref. 0.200" / 5.08 mm 0.050" / 1.27 mm dia. finished pins 0.040" / 1.02 mm typ. FEATURES Solder-coated phosphor bronze Series Wattage P Dimensions (in. / mm) Length L Height H TA203 TA303 TA205 TA305 TA605 TA805 TA207 TA307 TA310 TA810 TA025 TA050 TA100 3.0 3.0 5.0 5.0 5.0 5.0 7.5 7.5 10.0 10.0 25.0 50.0 100.0 0.200 / 5.08 0.300 / 7.62 0.200 / 5.08 0.300 / 7.62 0.600 / 15.24 0.800 / 20.32 0.200 / 5.08 0.300 / 7.62 0.300 / 7.62 0.800 / 20.32 1.90 / 48.3 1.90 / 48.3 4.10 / 104.1 0.50 / 12.70 0.50 / 12.70 0.50 / 12.70 0.50 / 12.70 1.00 / 25.40 1.00 / 25.40 0.75 / 19.05 0.75 / 19.05 1.00 / 25.40 1.00 / 25.40 2.220 / 56.39 2.220 / 56.39 4.420 / 112.27 0.60 / 15.24 0.60 / 15.24 1.00 / 25.40 1.00 / 25.40 0.50 / 12.70 0.50 / 12.70 1.00 / 25.40 1.00 / 25.40 1.00 / 25.40 1.00 / 25.40 1.170 / 29.70 2.270 / 57.60 2.270 / 57.60 • High-Temp Terminal Construction • Wide Resistance Range • Low Inductance (50nH-100nH) • High Power Density • Easy to install. PC-mountable SPECIFICATIONS Material Substrate: Alumina Resistor: Thick Film Coating: Glass Terminals: Solder Plated Phosphor Bronze Thermal Conductivity: 20 Watts/Meter/°C Temperature Coefficient: 1 ohm 450 ppm/°C 1 to 100Ω 100 ppm/°C 101Ω and up 50 ppm/°C Electrical Tolerance: ±1% and ±5% (other tolerances available) Power Rating: Based on 25°C free air Resistance Range: 0.5 ohm to 10M ohm. Consult factory for other values Maximum Operating Voltage: 350 VAC, 500 VDC through glass, 1000 VAC, 1500 VDC through substrate Overload: Five times rated power, as long as the one second average dissipation does not exceed the wattage rating. ∆R: ±2%, 2000 hours Derating: 100% @ 25°C to 0% @ 350°C. O R D E R I N G I N F O R M AT I O N Pin spacing (on 3-10W models only) 2 = .2" 3 = .3" 8 = .8" Tolerance K = 10% J = 5% F = 1% E = RoHS compliant Available Jan. 2006 ������������� Series Power Rating: 03 = 3 W 05 = 5 07 = 7.5 10 = 10 025 = 25 050 = 50 100 = 100 Package: PA = pin terminals, std. for 3-10 W PW = wraparound, std. for 25-100 W Resistance Value (Ω) R250 = 0.25 10R0 = 10.0 2K00 = 2,000 45K0 = 45,000 2,500.00 3,000.00 4,000.00 4,700.00 5,000.00 5,100.00 7,500.00 10,000.00 15,000.00 18,000.00 20,000.00 30,000.00 39,000.00 50,000.00 75,000.00 100,000 150,000 200,000 TA100PW TA050PW TA025PW TA810PW TA310PA TA207PA TA305PA TA205PA –––50R0J –––62R0J –––68R0J –––75R0J –––100RJ –––150RJ –––200RJ –––250RJ –––270RJ –––300RJ –––470RJ –––560 –––620RJ –––680RJ –––1K00J –––1K50J –––1K80J –––2K00J TA303PA 50.00 62.00 68.00 75.00 100.00 150.00 200.00 250.00 270.00 300.00 470.00 500.00 620.00 680.00 1,000.00 1,500.00 1,800.00 2,000.00 Part Number Part No. Prefix Suffix TA203PA TA100PW TA100PW TA050PW TA050PW TA025PW TA025PW TA810PW TA810PW TA310PA TA310PA TA207PA TA207PA TA305PA TA305PA TA205PA TA205PA TA303PA TA303PA TA203PA TA203PA Ohmic value Ohmic value Part No. Prefix Suffix –––R250J –––1R00J –––1R50J –––2R00J –––4R70J –––5R00J –––5R10J –––7R50J –––8R20J –––10ROJ –––11R0J –––12R0J –––15R0J –––20R0J –––24R0J –––27R0J –––33R0J –––47R0J 0.25 1.00 1.50 2.00 4.70 5.00 5.10 7.50 8.20 10.00 11.00 12.00 15.00 20.00 24.00 27.00 33.00 47.00 Part Number Part Number Part No. Prefix Suffix Ohmic value S T O C K PA RT N U M B E R S F O R S TA N D A R D R E S I S TA N C E VA L U E S –––2K50J –––3K00J –––4K00J –––4K70J –––5K00J –––5K10J –––7K50J –––10K0J –––15K0J –––18K0J –––20K0J –––30K0J –––39K0J –––50K0J –––75K0J –––100KJ –––150KJ –––200KJ = Most popular stock values, = Stock values, = Non-stock values subject to minimum handling charge per item 50 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • [email protected]