TAP1000 OHMITE | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 143 TAP1000 & 2000 1000 & 2000 Watt Heat Sinkable Planar Resistor Element Thick Film on Alumina Substrate Power Rating 1000W or 2000W at 85°C mounting plate Resistance Values 0.5Ω to 1000Ω Resistance Tolerance +10% std. Max Operating Voltage 2000VDC Temperature Coefficient ± 250 PPM/°C Dielectric Strength 6KV standard Operating Temperature Range -55°C to 85°C 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) 100Percent Rated Watts Bottom of base plate Temperature, °C 150 25 100 1250 5 0 8 5 Rating Test Continuous Pulse Rated Power, max. current and heat sink plate temperature limited (TA1K0) 1000W (TA2K0) 2000W Operating Voltage √P*R 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 (TA1K0) 10Ω (TA2K0) 20Ω Test Method Maximum ∆R Short Time Overload 1.14 x √P*R / 10 sec @ 70°C Max % ∆Rsto = ±(2% + 0.05Ω) Moisture Resistance (TA1K0) 1000 hrs @ 40°C, 90-95% RH (TA2K0) 1750 hrs @ 40°C, 90-95% RH ≤1% ≤1% Thermal Shock MIL-STD-202, Method 107 MIL-STD-202, Method 107 Vibration, elec. MIL-STD-202, Method 201 ±2% Resistance Vibration, mech. MIL-STD-202, Method 201 No Loose Terminal Screws Load Life (TA1K0) 1000 Hrs 90 min ON / 30 min OFF (TA2K0) 1750 Hrs 90 min ON / 30 min OFF ≤1% ≤1% Pulse Tolerance 52µF @ 2KV / 60 sec intervals, 104J, 20,000 Pulses ≤1% Dielectric Strength 6KVDC for 1 minute ≤1% The TAP series delivers 1000W or 2000W of contin- uous power when properly mounted to a liquid cooled heat sink (based on 85°C mounting plate tempera- ture) Applications include power conditioning, power distribution, power conver- sion, and power control.

FeATures

  • High Energy Rating
  • Low Inductance
  • Resistor Element Electrically Isolated
  • High Dielectric Strength
  • Small Footprint

APPlicATions

  • Power semiconductor balancing
  • Motor control
  • Inrush Current Limiting chArAcTerisTics Derating (continued)

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com144 TA 1K0PH2R50KE Style Package Type Resistance 2.5Ω = 2R50 50Ω = 50R0 Tolerance K = 10% (standard) L = 20% Wattage RoHS Compliant 0.798" (20.26mm) 3.000" (76.20mm) ø10-32 1.308" (33.21mm) 0.193" (4.89mm) 1.622" (41.20mm) 0.689" (17.50mm)ø0.172" (4.37mm) 0.450" (11.43mm) 0.300" (7.62mm) 0.188" (4.76mm) 1.308" (33.21mm) (same dimensions)

1000 Watt

Ohms 10% Tolerance

0.5 TA1K0PHR500KE

1 TA1K0PH1R00KE

2.5 TA1K0PH2R50KE

5 TA1K0PH5R00KE

7.5 TA1K0PH7R50KE

10 TA1K0PH10R0KE

15 TA1K0PH15R0KE

25 TA1K0PH25R0KE

50 TA1K0PH50R0KE

100 TA1K0PH100RKE

250 TA1K0PH250RKE

500 TA1K0PH500RKE

750 TA1K0PH750RKE

1000 TA1K0PH1K00KE

2000 Watt

Ohms 10% Tolerance

0.5 TA2K0PHR500KE

1 TA2K0PH1R00KE

2.5 TA2K0PH2R50KE

5 TA2K0PH5R00KE

7.5 TA2K0PH7R50KE

10 TA2K0PH10R0KE

15 TA2K0PH15R0KE

25 TA2K0PH25R0KE

50 TA2K0PH50R0KE

100 TA2K0PH100RKE

250 TA2K0PH250RKE

500 TA2K0PH500RKE

750 TA2K0PH750RKE

1000 TA2K0PH1K00KE

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

  • Heats sink plate (base plate of the resistor) temperature must be monitored to establish proper de-rating. Best tech- nique 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.
  • To obtain a power rating of 1000W or 2000W, the bottom case temp must not exceed 85°C. This can only be achieved if the thermal conduction to the heatsink Rth-cs<0.025°K/W. This value can be reached by using thermal transfer com- pound with a heat conductivity of 1W/mK. The flatness of the cooling plate must be better than 0.05mm overall. The roughness of the surface should not exceed 6.4µm.
  • 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 TAP resistor. The Hydroblok, a 4 pass aluminum heat sink (http://www.ohmite.com/ta1k0- sink.html) is an example of properly designed heat sink. TAP1000 & 2000 1000 & 2000 Watt Heat Sinkable Planar Standard Part Numbers

ordering inFormATion

(in./mm)