Catalog Pages - KOA Speer Electronics

resistors
WF
thermal fuse built-in resistor
EU
features
• Marking: Ceramic body with alpha/numeric marking
• Products with lead-free terminations meet EU RoHS
requirements. Pb located in glass material, electrode
and resistor element is exempt per Annex 1, exemption
5 of EU directive 2005/95/EC
dimensions and construction
D
W
Type
Thermal Fuse
Resistor
WF5N
W
WF7N
+2
-1
4.5
Dimensions inches (mm)
H
P
d (R. Lead) d (Fuse Lead)
.630±.039 .472±.039 1.38±.059
(16.0±1.0) (12±1.0)
(35±1.5)
WF10N
Lead Wire
D
1.00±.059
+.079
.512±.039 .354±.039 (25.5±1.5) .197 -.039
+2
(13.0±1.0) (9.0±1.0) 1.52±.059
(5 -1 )
(38.5±1.5)
H
Ceramic Case
Cement
ød
P
2A: 0.6
10A: 1.0
.031
(0.8)
+.079
.295 -.039
+2 )
(7.5 -1
ordering information
New Part #
WF
5N
Type
Style
5N
7N
10N
C
8
G
100
K
Terminal Surface
Temperature
C: SnCu
Thermal Fuse
Symbol
See table
below
Resistor
Material
G: Glass core
wire wound
S: Metal oxide
film
Nominal
Resistance
3 digits
Resistance
Tolerance
J: ±5%
K: ±10%
applications and ratings
Thermal
Fuse
Symbol
8
10
12
14
32
33
34
35
Power Rating
(W)
Thermal Fuse
Thermal
Current
Cut-off Temp. Rating
129±2 (STD)
152±2
+3
188 -1
+1
226 -3
110±2
126±2
130±2 (STD)
+3
146 -2
Voltage
Rating
5N
7N
10N
AC
250V
1.6
1.6
2.0
2.0
1.2
1.4
1.6
1.6
2.0
2.0
2.4
2.4
1.4
1.6
2.0
2.0
2.5
2.5
3.5
3.5
––
––
––
––
10A
2A
Resistance Range/
Material (Ω)
Resistance
Tolerance
G: Glass S: Metal G: Glass S: Metal
Core
Oxide
Core
Oxide
Wirewound
Film
Wirewound
Film
1 - 100
(E24)
110 - 10k
J: ±5%
(E24)
K: ±10%
J: ±5%
Maximum
Working
Voltage
E= √ P • R
Maximum
Overload
Voltage
E=
√ P • R • 6.25
* Other combinations of thermal cut-off temperatures and resistance values are available on request
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
160
12/27/13
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
thermal fuse built-in resistor
environmental applications
Derating Curve
100
Percent Rated Power
(%)
Percent Rated Power
(%)
100
Temp. Symbol
80
60
10˚
40
14˚
20
Temp. Symbol
80
60
40
12˚
8˚
35˚
33˚
20
32˚
34˚
0
0
-25
-20
0
25
20
75
40
60
80
89 100
100
120
-25
-20
133 147
140
160
0
25
20
40
60
68 75 91 95 105
80
100 120
140
160
Ambient Temperature
(˚C)
Ambient Temperature
(˚C)
Temperature Rise
For resistors operated at an ambient temperature of 25°C or above, a
power rating shall be derated in accordance with the above rating curves.
Temperature Rise (deg)
200
5N
150
7N
100
10N
50
Measuring Point
0
2
4
8
6
Load Power (W)
Performance Characteristics
Parameter
Resistance
T.C.R.
Requirement ∆ R ±(%+0.05Ω)
Limit
Typical
Within specified
—
tolerance
-6
±250 x 10 /K (G)
—
±300 x 10-6/K (S)
Test Method
25°C
+25°C/-55°C and +25°C/+125°C
Overload (Short Time)
±2%
±1.8%
Rated voltage x 6.25 for 5 seconds
Resistance to Soldering Heat
±1%
±0.9%
350°C ± 10°C, 3.5 seconds
Moisture Resistance
±5%
±4.5%
40°C, 90% - 95% RH, 500 hours, No load
Load Life
±5%
±4.5%
Rated voltage, 25°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/30/10
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
161
resistors
WF