W209001FA Datasheet, PDF (1/3 Pages) IRC - a TT electronics Company. – Vitreous Enamelled Wirewound Resistors

Vitreous Enamelled Wirewound Resistors
IRC Wire and Film Technologies Division
W20 Series
• Rugged all-welded construction
• High purity ceramic substrate
• Impervious lead-free vitreous enamel coating
• High stability and high reliability
• Suitable for harsh environments
• Overload charcteristics ideal for protection circuits
• Lead-free, RoHS-compliant construction
Specifications
Part
Number
W21
Power rating
@25°C
(Watts)
3.0
W215
5.0
W22
7.0
W23
10.0
W24
14.0
Notes
1 _{See temperature rise graph}
Resistance
Range
(Ohms)
1 - 10K
0.5 - 10K
0.1 - 10K
1 - 15K
0.5 - 15K
0.1 - 15K
1 - 22K
0.5 - 22K
0.1 - 22K
1 - 60K
1 - 60K
0.15 - 60K
1 - 100K
1 - 100K
0.15 - 100K
Tolerance
(±%)
1
2
5
1
2
5
1
2
5
1
2
5
1
2
5
TCR
(±ppm/°C)
Typical: <+75
Maximum: +200
Limiting Element
Voltage
(Volts)
Thermal
Impedance¹
(°C/watt)
100
88
Typical: <+75
160
58
Maximum: +200
Typical: <+75
200
44
Maximum: +200
Typical: <+75
500
29
Maximum: +200
Typical: <+75
750
22
Maximum: +200
Application Notes
The terminations should not be bent closer than 1.6mm from the body of the resistor, and the recommended
bend radius is 1.2mm. Terminations are solderable to within 4mm from the resistor body.
When cold, vitreous enamel has excellent insulation resistance. In common with all insulation materials, the
specific resistance of the enamel decreases with increased temperatures. Therefore, resistors operated at
near-maximum temperature cannot be considered as insulated and should not be used in contact with any
conductive material.
Care must be taken when determining clearance distance between the resistor body and printed circuit board
or other components to ensure these are not overheated. Resistance is measured 6mm from the resistor body.
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of printing.
© IRC Wire and Film Technologies Division • 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: [phone] • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
W20 Series Issue November 2006