The TAP1000 Series resistors
deliver 1000 watts of continu-
ous power with thick film on
alumina substrate technol-
ogy. Up to 30% smaller, the
TAP1000 is capable of 2 to 4
times the power dissipation of
traditional heat sinkable resis-
tor technologies. Designed
for use with liquid cooled
heat sinks, TAP1000 resis-
tors are capable of dissipat-
ing 1000 watts of continuous
power when properly mounted
(based on 70°C base tempera-
ture).
Offering the highest power
available in a heat sinkable
package, the TAP1000 is well
suited for power condition-
ing, power distribution, power
conversion, and power control
applications. Constructed of
durable, lightweight materials,
the TAP1000 package is easy
to design and mount.
SPECIFICATIONS
Material
Resistor Element:
Thick Film on
Alumina Substrate
Electrical
Power Rating:
1000 watt @ 70°C
Mounting Plate
Resistance Values:
2.5Ω to 50Ω
Resistance Tolerance:
+20% std.
Max Operating Voltage:
2000VDC
Temperature Coefficient:
± 250 PPM/°C
Dielectric Strength:
6KV
Standard, up to 12KV available
Operating Temperature Range:
-55°C to 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
TAP1000 Series
1000 Watt Heat Sinkable
Planar Resistor
0.193"
(4.89mm)
ø0.172"
(4.37mm)
0.689"
(17.50mm)
ø10-32
1.308"
(33.21mm)
3.000"
(76.20mm)
1.308"
(33.21mm)
1.622"
(41.20mm)
(same dimensions)
0.300"
(7.62mm)
0.450"
(11.43mm)
0.188"
(4.76mm)
0.798"
(20.26mm)
FEATURES
• Dissipates 1000 Watts @ 70°C
Mounting Plate Temperature
• High Energy Rating
• Low Inductance
• Resistor Element Electrically
Isolated
• High Dielectric Strength
• Small Footprint
DERATING CURVE
100
Percent Rated Watts
80
60
40
20
0
0
25
50 70
100 125
Ambient Temperature,
°C
150
P E R F O R M A N C E D ATA
Test
Rated Power, max. current and
heat sink plate temperature limited
Operating Voltage
Max. Applied Voltage, ohms law limited
Max. Current
Critical Resistance; below this resistance max power
has to be de-rated due to exceeding max current
Rating
Continuous
Pulse
1000W
√P*R
223V
10A
10 ohms
N/A
2000VDC
53.33A
APPLICATIONS
• Power semiconductor balancing
• Motor control
• Inrush Current Limiting
O R D E R I N G I N F O R M AT I O N
RoHS Compliant
½½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½
Style
Package Resistance
Type
1 ohm = 1R00
50 ohms = 50R0
Tolerance
K = 10% (standard)
L = 20%
STOCK PART NUMBERS
Ohms
3
4
5
8
10
Part Number
10% Tolerance
TA1K0PH3R00KE
TA1K0PH4R00KE
TA1K0PH5R00KE
TA1K0PH8R00KE
TA1K0PH10R0KE
Ohms
15
20
25
30
50
Part Number
10% Tolerance
TA1K0PH15R0KE
TA1K0PH20R0KE
TA1K0PH25R0KE
TA1K0PH30R0KE
TA1K0PH50R0KE
Test
Method
Maximum
∆R
Short Time Overload
1.14 x
√P*R
/ 10 sec @ 70°C
Max %
∆R
sto
= ±(2% + 0.05Ω)
Moisture Resistance
1000 hrs @ 40°C, 90-95% RH
≤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, 1000 Hrs
90 min ON / 30 min OFF
≤1%
Pulse Tolerance
52µF @ 2KV / 60 sec intervals, 104J
≤1%
20,000 Pulses
Dielectric Strength
6KVDC for 1 minute
≤1%
APPLICATION NOTES
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 rec-
ommended 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.d6industries.com/heatsinks.html) is an
example of properly designed heat sink.
59
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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