1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

THick Film

AluminA

TA Series

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

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

Tolerance ±1%, ±5% and ±10%

Power Rating Based on 25°C free air

Resistance Range 0.25 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 rat-

ing. ∆R: ±2%, 2000 hours

Derating 100% @ 25°C to 0% @ 180°C ambient.

Ohmite’s original Power Chip resistors feature our

thick film on alumina substrate technology. These

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.

Fe A T ure S

• High-Temp Terminal Construction

• Wide Resistance Range

• Low Inductance (50nH-100nH)

• High Power Density

• Easy to install. PC-mountable

ch A r A c T eri ST ic S

S erie S SP eci F ic AT i ONS

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