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4K70J Datasheet(PDF) 1 Page - Ohmite Mfg. Co.

Part # 4K70J
Description  Power Chip짰 Thick Film on Alumina Substrate
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Manufacturer  OHMITE [Ohmite Mfg. Co.]
Direct Link  http://www.ohmite.com
Logo OHMITE - Ohmite Mfg. Co.

4K70J Datasheet(HTML) 1 Page - Ohmite Mfg. Co.

  4K70J Datasheet HTML 1Page - Ohmite Mfg. Co. 4K70J Datasheet HTML 2Page - Ohmite Mfg. Co.  
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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
THick Film
AluminA
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
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
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.
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


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