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| 型號(hào)： | NFR25 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Fusible, Non-Flammable Resistors |
| 中文描述： | 易熔，不易燃電阻 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 96K |
| 代理商： | NFR25 |
Document Number: 28737
Revision: 24-Feb-04
For technical questions contact: ff3dresistors@vishay.com
www.vishay.com
3
NFR25/25H
Fusible, Non-Flammable Resistors
Vishay BCcomponents
The power that the resistor can dissipate depends on the operating
temperature.
The resistors will fuse without the risk of fire and within an indicated
range of overload. Fusing means that the resistive value of the resistor
increases at least 100 times.
The fusing characteristic is measured under constant voltage.
Derating
70
100
50
0
0
50
100
155
55
T
amb
(
°
C)
P
max
(%P
rated
)
Maximum dissipation (P
max
) in percentage of rated power as
a function of the ambient temperature (T
amb
).
10
3
10
2
10
1
10
1
12
4
0
8
P
overload
(W)
t
(s)
16
20
24
NFR25
This graph is based on measured data which may deviate
according to the application. Fusing Characteristics:
≤
1
.
10
3
10
2
10
1
10
–1
12
4
0
8
Poverload(W)
t
(s)
NFR25
This graph is based on measured data which may deviate
according to the application. Fusing Characteristics: 1
≤
R
≤
15
.
10
3
10
2
10
1
10
–1
12
4
0
8
Poverload(W)
t
(s)
NFR25
This graph is based on measured data which may deviate
according to the application. Fusing Characteristics: 15
≤
R
≤
15
.
Fusing Characteristic
10
3
10
2
10
1
10
1
12
4
0
8
P
overload
(W)
t
(s)
16
20
24
NFR25H
This graph is based on measured data which may deviate
according to the application. Fusing Characteristics:
≤
1
.
10
3
10
2
10
1
10
1
12
4
0
8
P
overload
(W)
t
(s)
16
20
24
NFR25H
This graph is based on measured data which may
deviate according to the application. Fusing Characteristic.
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