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參數(shù)資料
| 型號(hào)： | LOB |
| 廠商： | TT Electronics / Welwyn |
| 英文描述： | Low Resistance Metal Element Resistors |
| 中文描述： | 低電阻金屬元素電阻 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 129K |
| 代理商： | LOB |
* Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings while not exceeding the maximum element
temperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding objects will affect this transfer, this must be taken
into account when selecting a resistor.
Low Resistance Metal
Element Resistors
LOB Series
Ultra low resistance values
(0.005
to 0.1
)
Available in 1, 3 and 5 watt rated packages
Tolerances from ±1% to ±5%
Inherently non-inductive (
≤
.02μH at 0.5MHz)
Low temperature coefficient of resistance
High stability over life
Dimensions (mm)
Type
L max.
D max.
f min.
d nom.
C
LOB-1
9.9±0.3
3.6±0.2
38.1±3.2
0.813±0.05
33.27
LOB-3
14.22±0.25 5.33±0.25 34.93±3.18 0.81±0.05
33.27
LOB-5
23.37±0.25 8.38±0.25 31.75±3.18 1.02±0.05
42.42
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
LOB-1
LOB-3
LOB-5
Continuous power dissipation at 25°C in free air
watts
1
3
5
Overload power for 5 seconds
watts
5
15
√
3xR
175
25
√
5xR
175
Maximum working voltage
volts
√
1xR
175
Maximum storage temperature
°C
Electrical Data
Physical Data
Issue B · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
104
L
C
D
f
d
contact point
contact point
Description
LOB
Series power precision metal element resistors feature
resistance values down to 0.005
with virtually no
inductance. Available in 1, 3 and 5 watt rated axial leaded
packages, these resistors are compatible with automatic
insertion equipment.
Applications
Switchmode and linear power supplies.
Automotive current-sensing circuits.
Instrumentation.
Construction
LOB
Series resistors feature tinned copper leads welded
directly to a low temperature coefficient resistance element in
a highly automated proprietary process. The leaded resistor
elements are then encapsulated in a moulding compound.
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