F E A T U R E S
S P E C I F I C A T I O N S
Material
Housing: Ceramic
TUM/TUW Series
• Economical Commercial Grade
for general purpose use
• Wirewound and Metal Oxide
construction
• Wide resistance range
• Flameproof inorganic construc-
tion
Ceramic Housed Axial Terminal Power
Core: Fiberglass or metal oxide
Filling: Cement based
Electrical
Tolerance: 5% standard
Temperature coeff.:
0.01-20Ω ±400ppm/°C
20-150KΩ ±350ppm/°C
Dielectric withstanding voltage:
1,000VAC
1.38" ±.197
35mm ±5
0.03" ±.002
L
0.8mm ±.05
(0.7mm on 3w)
H
(32mm on 3w)
D E R A T I N G C U R V E
100
W
80
60
40
20
0
Short time overload
TUW: 10x rated power for 5 sec.
TUM: 5x rated power for 5 sec.
Dimensions (in. / mm)
Length
Height
Width
Series Wattage Ohms
(±1mm)
(±1mm)
(±1mm) Voltage
Element
TUW3
TUW5
TUW7
3
5
7
0.01-39 0.87 / 22 0.31 / 8 0.31 /
0.01-47 0.87 / 22 0.35 / 9 0.39 / 10 350 Wirewound
0.10-680 1.48 / 35 0.35 / 9 0.39 / 10 500 Wirewound
8
350 Wirewound
TUW10 10 0.10-990 1.93 / 49 0.35 / 9 0.39 / 10 750 Wirewound
TUW15 15 0.10-1000 1.93 / 49 .453/11.5 0.49 / 12.5 1000 Wirewound
70 100
150
200
250 275
Ambient Temperature, °C
TUM3
TUM5
TUM7
3
5
7
180-33K 0.87 / 22 0.31 / 8 0.31 /
220-50K 0.87 / 22 0.35 / 9 0.39 / 10 350 Metal oxide
910-50K 1.48 / 35 0.35 / 9 0.39 / 10 500 Metal oxide
8
350 Metal oxide
O R D E R I N G I N F O R M AT I O N
Tolerance
J = 5%
E = RoHS compliant
TUM10 10 1000-50K 1.93 / 49 0.35 / 9 0.39 / 10 750 Metal oxide
TUM15 15 1100-150K 1.93 / 49 .453/11.5 0.49 / 12.5 1000 Metal oxide
T U M 3 J 8 R 2 E
Series
Wattage Resistance Value
The TUM/TUW Series resistors are our most economical power
resistors. They are recommended for commercial applications
where low cost is critical.
They are available in small standard packs for standard val-
ues, or bulk packaged for even lower costs.
TUM = Ceramic Housed
Metal Oxide
TUW = Ceramic Housed
Wirewound
3
5
7
Example:
R50=0.50Ω
1R0=1Ω
10
15
8R2=8.2Ω
250=250Ω
1K0=1,000Ω
8K2=8,200Ω
10K=10,000Ω
S TA N D A R D P A R T N U M B E R S F O R T U W / T U M S E R I E S
Wattage
Wattage
Wattage
Wattage
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
0.01 –––R01E
0.01 –––R01E
0.02 –––R02E
0.04 –––R04E
0.05 –––R05E
0.10 –––R10E
0.15 –––R15E
0.20 –––R20E
0.27 –––R27E
0.30 –––R30E
0.33 –––R33E
0.39 –––R39E
0.43 –––R43E
0.47 –––R47E
0.56 –––R56E
0.68 –––R68E
0.75 –––R75E
0.82 –––R82E
1.0 –––1R0E
1.5 –––1R5E
2.0 –––2R0E
2.7 –––2R7E
3.0 –––3R0E
3.3 –––3R3E
3.9 –––3R9E
4.3 –––4R3E
4.7 –––4R7E
5.6 –––5R6E
6.8 –––6R8E
7.5 –––7R5E
8.2 –––8R2E
33
39
43
47
56
68
75
82
100
150
200
270
300
330
390
430
470
560
–––33RE
–––39RE
–––43RE
–––47RE
–––56RE
–––68RE
–––75RE
–––82RE
–––100E
–––150E
–––200E
–––270E
–––300E
–––330E
–––390E
–––430E
–––470E
–––560E
680
750
820
–––680E
–––750E
–––820E
1000 –––1K0
1500 –––1K5
2000 –––2K0
2700 –––2K7
3000 –––3K0
3300 –––3K3
3900 –––3K9
4300 –––4K3
4700 –––4K7
5600 –––5K6
6800 –––6K8
7500 –––7K5
8200 –––8K2
10000 –––10K
10
–––10RE
–––15RE
–––20RE
–––27RE
–––30RE
15
20
27
30
Check product availability at www.ohmite.com
Shaded area: change prefix to TUM
Our Tech Center is open 10am to
2pm CT Tuesdays and Thursdays,
just call 866-9-OHMITE
42
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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