The TWM/TWW series radial terminal power resistors offer
significant board space savings over axial terminal products.
Generated heat is also kept away from the circuit board.
They are recommended for commercial applications requiring
low cost.
TWM/TWW Series
Ceramic Housed Radial Terminal Power
F E ꢀ T ꢁ R E S
S P E C ꢂ F ꢂ C ꢀ T ꢂ O ꢃ S
• Economical Commercial Grade
for general purpose use
• Wirewound and Metal Oxide
construction
• Wide resistance range
• Flameproof inorganic construc-
tion
Material
Housing: Ceramic
0.49" .04
12.5mm
0.35" .04
9 mm
1
1
Core: Fiberglass or metal oxide
Filling: Cement based
Electrical
Tolerance: 5% standard
Temperature coeff.:
.01-20Ω ±400ppm/°C
20-10Ω ±350ppm/°C
Dielectric withstanding voltage:
1,000VAC
Short time overload:
TWW: 10x rated power for 5 sec.
TWM: 5x rated power for 5 sec.
Operating Temp.: -55°C to 275°C
Storage Temp.: 6°C to 36°C
H
(marked
surface)
D E R ꢀ T ꢂ ꢃ ꢄ
100
80
60
40
20
0
0.20" .04
5mm
20
gauge
1
0.20" .08
0.20" .04
5mm
5.0mm
2
1
Series Wattage
Ohms Height (in./mm) Voltage Element
70 100
150
200
250 275
TWW3
TWW5
3
5
.01-39
0.98 / 25
0.98 / 25
1.97 / 50
0.98 / 25
0.98 / 25
1.97 / 50
250
350
750
Wire
Wire
Wire
Ambient Temperature, °C
.01-47
.04-990
43-50K
51-50K
TWW10 10
o r d e r i n g i n f o r m aT i o n
TWM3
TWM5
TWM10
3
5
250 Metal oxide
350 Metal oxide
750 Metal oxide
Tolerance
J = 5%
E = RoHS compliant
10 1000-50K
T W W 3 J R 0 5 E
Series
Wattage Resistance Value
TWM = Ceramic housed
3
5
Example:
metal oxide radial
R05 = 0.05Ω
R56 = 0.56Ω
1R0 = 1Ω
TWW= Ceramic housed 10
wirewound radial
8R2 = 8.2Ω
270 = 270Ω
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 W W S e r i e S
S Ta n d a r d pa r T n u m b e r S f o r T W m S e r i e S
Wattage
Wattage
Wattage
Wattage
Wattage
Part ꢃo.
Prefix
Part ꢃo.
Prefix
Part ꢃo.
Prefix
Part ꢃo.
Prefix
Part ꢃo.
Prefix
Suffix
Suffix
Suffix
Suffix
Suffix
0.01 –––R01E
0.02 –––R02E
0.03 –––R03E
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
43
47
56
68
75
–––43RE
–––47RE
–––56RE
–––68RE
–––75RE
–––82RE
–––100E
–––150E
–––200E
–––270E
–––300E
–––330E
–––390E
–––430E
–––470E
–––560E
–––680E
–––750E
–––820E
43 ––– 43RE
47 ––– 47RE
56 ––– 56RE
68 ––– 68RE
75 ––– 75RE
82 ––– 82RE
100 ––– 100E
150 ––– 150E
200 ––– 200E
270 ––– 270E
300 ––– 300E
330 ––– 330E
390 ––– 390E
430 ––– 430E
470 ––– 470E
560 ––– 560E
680 ––– 680E
750 ––– 750E
820 ––– 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
82
100
150
200
270
300
330
390
430
470
560
680
750
820
10
–––10RE
–––15RE
–––20RE
–––27RE
–––30RE
–––33RE
–––39RE
15
20
27
30
33
39
Check product availability at www.ohmite.com
48 Ohmite Mfg. Co.
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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