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TAP1000 Series

The TAP1000 Series delivers 1000 watts of continuous power when properly mounted to a liquid cooled heat sink (based on 70°C ambient temperature) Applications include power conditioning, power distribution, power conversion, and power control. Derating

FEATURES Dissipates 1000 Watts @ 70°C Mounting Plate Temperature High Energy Rating Low Inductance Resistor Element Electrically Isolated High Dielectric Strength Small Footprint APPLICATIONS Power semiconductor balancing Motor control Inrush Current Limiting SPECIFICATIONS Material Resistor Element: Thick Film on Alumina Substrate Electrical Power Rating: 1000 watt @ 70°C Mounting Plate Resistance Values: 2.5 ohm to 50 ohm Resistance Tolerance: +10%, Std. Max Operating Voltage: 2000VDC Temperature Coefficient: ±250 PPMppm/°C Dielectric Strength: 6KV Standard, up to 12KV available Operating Temperature Range: -55°C to 150°C Derating: Linearly from 100% @ +70°C to 0% @ 150°C Case Terminal Screws: #10 - 32 Max Contacts Torque: 10 in-lb Mounting Screws: #8 - 32 Max Mounting Torque: 15 in-lb Creepage Distance: 50mm ±1mm (min) Thermal Resistance: 0.05°C/Watt

Test	Rating
	Continuous	Pulse
Rated Power, max. current and heat sink plate temperature limited	1000W
Operating Voltage		N/A
Max. Applied Voltage, ohms law limited	223V	2000VDC
Max. Current	10A	53.33A
Critical Resistance; below this resistance max power has to be de-rated due to exceeding max current	10 ohms
Test	Method	Maximum delta-R
Short Time Overload	1.14x / 10 sec @ 70°C	Max % delta-Rsto = ±(2% + 0.05 ohm)
Moisture Resistance	1000 hrs @ 40°C, 90-95% RH	</= 1%
Thermal Shock	MIL-STD-202, Method 107	MIL-STD-202, Method 107
VibrationElect	MIL-STD-202, Method 201	±2% Resistance
VibrationMech	MIL-STD-202, Method 201	No Loose Terminal Screws
Load Life, 1000 Hrs	90 min ON / 30 min OFF	</= 1%
Pulse Tolerance, 20,000 Pulses	52µF @ 2KV / 60 sec intervals, 104J	</= 1%
Dielectric Strength	6KVDC for 1 minute	</= 1%

Proper heat sinking techniques are essential to performance of a TAP1000 resistor. Pleased follow these guidelines when designing TAP1000 system:

• Heat sink compound must always be used. Phase change material is preferred over silicon pastes.
• Heats sink plate (base plate of the resistor) temperature must be monitored to establish proper de-rating. Best technique is to attach a thermocouple to the side of the base plate of the resistor. Temperature of plastic housing or heat sink cannot be used to establish rating of the resistor. Usage of laser thermometers should be avoided.
• Due to very high power density, only liquid cooled heat sinks are recommended for applications when >300W power rating is desired.
• Properly designed heat sink should have more than 2 cooling pipes under the surface of the TAP1000 resistor. Hydroblok-1000, a 4 pass aluminum heat sink (http://www.ohmite.com/ta1k0-sink.html) is an example of properly designed heat sink.

STANDARD PART NUMBERS

	Part Number
Ohms	10% Tolerance
3	TA1K0PH3R00KE
4	TA1K0PH4R00KE
5	TA1K0PH5R00KE
8	TA1K0PH8R00KE
10	TA1K0PH10R0KE
15	TA1K0PH15R0KE
20	TA1K0PH20R0KE
25	TA1K0PH25R0KE
30	TA1K0PH30R0KE
50	TA1K0PH50R0KE