RES-TA OHMITE | Alldatasheet

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1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 103 TA Series Power Chip Thick Film on Alumina Substrate Series Wattage TA203 3.0 TA303 3.0 Substrate Alumina Resistor Thick Film Coating Glass Terminals Solder Plated Phosphor Bronze Temperature Coefficient 1 ohm: 450 ppm/°C 1 to 100Ω: 100 ppm/°C 101Ω and up: 50 ppm/°C Tolerance ±1%, ±5% and ±10% Power Rating Based on 25°C free air Resistance Range 0.25 ohm to 10M ohm. Consult fac- tory for other values Maximum Operating Voltage 350 VAC, 500 VDC through glass,

1000 VAC, 1500 VDC through sub-

strate, not to exceed power rating 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% @ 180°C ambi- ent. Equivalent Parallel Capacitance 1.0pf (100 MHz) Withstanding Voltage 5000V thru back side Operating Temperature Range -55°C to +180°C Overload Current 20 x rated current up to 8 ms (ΔR ± 0.5%) Test Test Condition MILR83401 Specification Life (Rated Power) 40°C, rated power, 90 min ON 30 min OFF , 1000 hrs. ΔR ±( 1.0% + 0.05Ω) Life (Moisture Load) 60°C, 90 - 95% RH, rated power, 90 min ON 30 min OFF , 1000 hrs. ΔR ±( 1.0% + 0.05Ω) Temperature Cycling Room temp > -55°C 30 min > RT 10 min ± 120°C 30 min > RT10 min 5 cycles ΔR ±( 0.25% + 0.05Ω) Flammability UL94V-O rated (not recognized) Soldering Heat 350°C Solderpot, 3 secs. ΔR ±( 0.25% + 0.05Ω) Insulation Resistance DC 100V, 1 min Over 1000M ohm Ohmite’s original Power Chip resistors feature 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 prod- uct 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.

FeATureS

  • High-Temp Terminal Construction
  • Wide Resistance Range
  • Low Inductance (50nH-100nH)
  • High Power Density
  • Easy to install. PC-mountable chArAcTeriSTicS SerieS SPeciFicATiONS Series Wattage TA205 5.0 TA305 5.0 TA605 5.0 TA805 5.0 Series Wattage TA207 7.5 TA307 7.5 Series Wattage TA310 10.0 TA810 10.0 Series Wattage TA025 25.0 TA050 50.0 TA100 100.0 (continued)

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com104 Series Wattage P Length L Height H *10-100 watts available in PW,PA, and PY packages. Power Rating: 03 = 3 W 05 = 5 07 = 7.5 10 = 10 025 = 25 050 = 50 100 = 100 TA 3 05P A4K50J E Series Tolerance K = 10% J = 5% F = 1% Package: PA = pin terminals, std. for 3-10 W PW = wraparound, std. for 10-100 W PY = high-stability wraparound Resistance Value (Ω) R250 = 0.25 10R0 = 10.0 2K00 = 2,000 45K0 = 45,000 Pin spacing (on 3-10W models only) 2 = .2" 3 = .3" 8 = .8" RoHS compliant H 0.020" / 0.51 mm typ. P L L+0.08"/2mm max. 0.200" / 5.08 mm 0.075" / 1.91 mm dia. finished pins 0.070" / 1.78 mm 0.040" / 1.02 mm 0.240" / 6.10 mm 0.300" / 7.62 mm 0.195" / 4.95 mm 0.855" / 21.72 mm 0.040" / 1.02 mm typ. PA 3, 5, 7.5 & 10 watt PW 10, 25, 50 & 100 watt PY mount P L 0.07"/1.78mm H 0.17"/4.32mm 0.10"/2.54mm 0.02" x 0.015" Pins typical PC board 0.150" / 3.8 mm min. 0.150" / 3.8 mm min. Standard part numbers for TA series  = Most popular standard values,  = Stock values DiMeNSiONS TA Series Power Chip Thick Film on Alumina Substrate

OrDeriNG iNFOrMATiON

Part No. Prefix  Suffix TA305PA Ohmic value TA203PA TA303PA TA205PA Part Number TA207PA TA310PA TA025PW TA050PW TA100PW TA810PW Part No. Prefix  Suffix TA305PA Ohmic value TA203PA TA303PA TA205PA Part Number TA207PA TA310PA TA025PW TA050PW TA100PW TA810PW Part No. Prefix  Suffix