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PDF BWW Data sheet ( Hoja de datos )
| Número de pieza | BWW | |
| Descripción | BWW Precision Wirewound Resistors | |
| Fabricantes | Token Electronics Industry | |
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TOKEN
GENERAL
PURPOSE
RESISTORS
General Purpose Wire Wound / Fusible Resistors
www.DataSheet4U.com
Token Electronics Industry Co., Ltd.
Taiwan: No. 137, Sec. 1, Chung Shin Rd., Wu Ku Hsiang, Taipei Hsien, Taiwan, R.O.C
TEL: 886-2-2981 0109; FAX: 886-2-2988 7487
China: 12F, Zhongxing Industry Bld., Chuangye Rd., Nanshan District, Shenzhen, Guangdong
TEL: 86-755-2605 5363, 2605 5364; FAX: 86-755-2605 5365
http://www.token.com.tw
rfq token.com.tw
1 page  
TOKEN
Resistors Glossary Terminology
Glossary Terminology
of General Purpose
Resistors
Fusible Resistor (Fuse Resistor, Circuit Protect Resistor)
A resistor designed to protect a circuit against overload; its resistance limits current flow and thereby
protects against surges when power is first applied to a circuit; its fuse characteristic opens the circuit
when current drain exceeds design limits.
Thermal Cutoff Resistor
The maximum nominal resistance value at which the rated power can be applied continuously without
exceeding the maximum working voltage is the critical resistance value. The rated voltage is equal to
the maximum working voltage in the critical resistance value. If the circuit designs permits, the choice
of a high ohmic value resistor or divider network will eliminate this consideration.
A thermal fuse is a cutoff which uses a one-time fusible link. Unlike the thermostat which automatical-
ly resets itself when the temperature drops, the thermal fuse is more like an electrical fuse: a single-use
device that cannot be reset and must be replaced when it fails or is triggered. A thermal fuse is most
useful when the overheating is a result of a rare occurrence, such as failure requiring repair (which
would also replace the fuse) or replacement at the end of service life.
Token offers “Thermal Cut-off Resistor”, a thermal Cut-offs is a fusible alloy and a resistor is a volt-
age divider, both are surrounded by a ceramic cement with special resin. Under normal operating tem-
peratures the fusible alloy joins the two lead wires within the body of the cutoff and the power resistor
acts as a normal function resistor. When the preset temperature of the cutoff is reached, the fusible
alloy melts and with the aid of the special resin, complete cutoff is ensured.
Thermal fuse resistors are usually found in heat-producing electrical appliances such as coffeemak-
ers and hair dryers. They function as safety devices to disconnect the current to the heating element in
case of a malfunction (such as a defective thermostat) that would otherwise allow the temperature to
www.DatraiSsheeteot4Uda.cnogmerous levels, possibly starting a fire.
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 58
5 Page 
TOKEN
BWW Precision Wirewound Resistors
Application Notes
Precision Wire-wound Resistors Application Notes:
● When being used in AC circuits, some wirewound structures give inductance ingredients or parasitic
capacity, so they may cause unusual phenomena such as oscillations etc. Quorum deviations of other com-
ponents should be carefully taken into account for use.
● Application and Placement: Wire wound resistors use different gauges of wire as resistance elements.
Sometimes the gauge is extremely thin (finer than a strand of human hair) and very susceptible to breakage
in environments containing salts, ash, dust and corrosives. Avoid utilization in such environments.
● Do not install in dusty areas because the accumulation will cause shorts and poor conductance.
How to Order
BWW
1W 100R
Part Number: BWW
Rated Power (W)
Resistance Value (Ω)
Code
OR1
100R
1K
Resistance Value (Ω)
0.1 Ω
100Ω
1000Ω
Resistance Tolerance (%)
Code
Resistance Tolerance
B ±0.1%
C ±0.25%
D ±0.5%
F ±1%
G ±2%
FD P
TCR (PPM/°C)
Code
C
D
K
Package
Code
P
TCR
±25PPM/°C
±50PPM/°C
±150PPM/°C
Package
Bulk
www.DataSheet4U.com
Version 2010
Back to 1st Page - Precision Wirewound Resistors (BWW)
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| PDF Descargar | [ Datasheet BWW.PDF ] | |
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