Features
- Electric support is high alumina content ceramic metallized on the bottom for ideal heat transfer and optimum discharge.
- Encapsulated with a special resin filled epoxy casing with a large creepage distance to mass, large air distance between terminals, and a high insulation resistance (CTI 600).
- Resistive element is specially designed for low inductance and capacitance. The element provides stable performance in addition to high wattage and pulse loading capability.
- Contacts allow for easy load connecting with M4 or M5 screws (not included).
- Materials meet the requirements of UL94-V0
Ohmite’s TAP800 Series dissipates 800 watts of power when used with a liquid or air cooled heat sink system. The Ohmite CP4 (https://www.ohmite.com/cp4-series-chillplate/) is an example of properly designed heat sink. The TAP800 compliments the 600 watt (TAP600), 650 watt (TAP650) and 2000 watt (TAP2000) product offerings. Applications include variable speed drives, power supplies, robotics, motor control, control devices, and other power designs.
Characteristics
Derating
Pulse Energy And Power Curves
Typical rating for TAP800 with 2R and 10% tolerance
These energy values are reference values; depending on ohmic value
and used resistive paste, a variation in max. energy load capability is
possible. The power curve shows the max. possible power which can be
applied for a certain duration.
- Mounted with thermal compound (0.9 W/mK) on a water-cooled heatsink
- Constant inlet water temp.: +50°C
- Test time: 10 min.
- Break time between pulses: 1sec
- Change in ohm value: ≤0.1%
- Pulse shape: e-function
- Time between two pulses: 1 sec.
- Pulse length: time constant of 1 tau (1 means ... tau = 1ms)
Examples
Energy: At 1ms tau the TAP800 with 2R can withstand an energy level of about 70J when the pulse pause time is ≥1s.
At a symmetrical frequency >1kHz at pulse length ≥10μsec., the maximum applied pulse energy is a result of the nominal power 800W divided by the operating frequency (at 85°C bottom case (E=800W/F)
Power: For the time-constant of 1ms you can apply about 140kW max. (Pp =2*E/T)R when the time between two such peaks is ≥1s
Dimensions
(iin./mm)
*Dimensions are taken while part is mounted to a proper heatsink
Ordering Information
Standard Values
10% tol.
TAP800KR25E TAP800KR33E TAP800KR50E TAP800K1R0E TAP800K5R0E TAP800K7R5E TAP800K10RE TAP800K15RE
TAP800K25RE TAP800K50RE TAP800K75RE TAP800K100E TAP800K220E TAP800K300E TAP800K390E
TAP800K680E TAP800K750E TAP800K1K0E TAP800K2K7E TAP800K5K0E TAP800K7K5E TAP800K10KE
5% tol.
TAP800J1R0E
TAP800J10RE
TAP800J50RE
TAP800J100E
TAP800J500E
TAP800J1K0E