58
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
Ohmite Mfg. Co.
ORDERING INFORMATION
TAP600 Series
600 Watt Heat Sinkable Planar Resistors
Ohmite’s TAP600 delivers
600 watts of reliable power
to a variety of power condi-
tioning, power transmission,
and power control applica-
tions. These resistors can be
used designed for liquid, or
air cooled heat sink systems
used in variable speed drives,
power supplies, robotics,
motor control, and other con-
trol devices.
Resistance values range
from 0.5
Ω
to 100K
Ω
in an
easy to assemble package
with a pre-calibrated mount-
ing pressure to the cooling
plate. The versatile TAP600
can be modified by request for
dielectric strength up to 12KV,
connector height up to 42mm,
and terminal sleeves for insu-
lation and creepage distances
to 85mm. Contacts require the
use of M5 screws.
FEATURES
• Dielectric Strengths Up to 12KV
• Special Design for Low Inductive
and Capacitance Values
• Easy Termination to Contacts
with M5 Screws
• Calibrated Mounting Simplifies
Assembly
• Designed to Customer
Specifications
SPECIFICATIONS
Electrical
Resistance Values:
0.5
Ω
to
100K
Ω
Resistance Tolerance:
±10%
Std., 5% available on request.
Temperature Coefficient:
±150ppm/°C (others upon
request)
Maximum Working Voltage:
5,000V DC, higher voltage on
request, not exceeding max.
power
Power Rating:
600W at 70°C
heat sink temperature
Electric Strength Voltage:
Up to 12,000Vrms, 50Hz, 1 Min.
Single Shot Voltage:
Up to 12KV
Normwave (1.5/50 µsec)
Insulation Resistance:
10G
Ω
min. at 500V
Creeping Distance:
42mm min.
Air Distance:
14mm min.
Inductance:
≤
80nH
Capacity/Mass:
≤
110pF
Capacity/Parallel:
≤
40pF
Operation Temperature:
-55°C to +150°C
Max. Torque for Contacts:
2 Nm
Max. Torque for Mounting:
1.8
Nm
Derating (thermal resist.):
8.73W/°C (0.115°C/W)
Power Rating:
600W at 70°C
heat sink temp.*
*This value is only valid by using a thermal
conduction to the heat sink
R
th
-cs<0.025°C/W.
The value can be reached by using thermal
transfer compound 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.
PERFORMANCE DATA
Test
Method
Typical Results -
∆
R
Short Time Overload
1000 W/10 Sec. @ 70°C
0.4%
Humidity Steady State
56 Days/40°C/ 95°C
0.25%
Temp. Cycling
-55/+125/5 Cycles
0.20%
Shock
40g/4,000 Times
0.25%
Vibrations
2 - 500Hz/10g
0.25%
Load Life 1,000 Cycles
Pn 30 min. ON/30 min. OFF
0.40%
Terminal Strength of Contacts
200N
0.05%
ø0.159–0.169"
(4.05–4.3mm)
0.689–0.728"
(17.5–18.5mm)
2.527–2.591"
(64.2–65.8mm)
1.331–1.346"
(33.8–34.2mm)
2.236–2.252"
(56.8–57.2mm)
1.409–1.425"
(35.8–36.2mm)
2.331–2.394"
(59.2–60.8mm)
øM5
occ. Din
0.177–0.216"
(4.5–5.5mm)
1.161–1.201"
(29.5–30.5mm)
1.240–1.279"
(31.5–32.5mm)
0.571–610"
(14.5–15.5mm)
0.177–0.216"
(4.5–5.5mm)
0.295–0.335"
(7.5–8.5mm)
II
PULSE-FORMS
E-function, time between two pulses: 1 sec.
DERATING CURVE
Percent rated power
Case temperature,
°
C
0 2
5 5
0 7
5
100
125
150
175
40
0
60
80
120
20
100
Rated power
, watts
240
0
360
480
720
120
600
Energy (W), log scale
1
10
100
10,000
1,000
100,000
Peak Power (W), log scale
T
ime (ms)
ime (ms)
0.001
0.01
0.1
1 1
0
100
1,000
100,000
100
1000
10,000
1,000,000
100,000
10,000
10,000,000
Tolerance
J = 5%
K = 10%, Std.
L = 20%
Style Resistance
1 Ohm = 1R0
10 Ohm = 10R
1000 Ohm = 1K0
STOCK RESISTANCE VALUES
1.0
15
500
2.0
30
1000
3.0
50
2500
4.0
75
3000
5.0
100
5000
10
300
10,000
