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NFR25 Datasheet

  • NFR25

  • Fusible, Non-Flammable Resistors

  • 8頁

  • VISHAY   VISHAY

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NFR25/25H
Vishay BCcomponents
Fusible, Non-Flammable Resistors
FEATURES
鈥?/div>
Overload protection without risk of fire
鈥?/div>
Wide range of overload currents.
APPLICATIONS
鈥?/div>
Audio
鈥?/div>
Video.
A homogeneous film of metal alloy is deposited on a high
grade ceramic body. After a helical groove has been cut in
the resistive layer, tinned connecting wires of electrolytic
copper are welded to the end-caps. The resistors are coated
with a grey, flame retardant lacquer which provides
electrical, mechanical, and climatic protection. The
encapsulation is resistant to all cleaning solvents in
accordance with 鈥淢IL-STD-202E, method 215鈥? and
鈥淚EC 60068-2-45鈥?
TECHNICAL SPECIFICATIONS
DESCRIPTION
Resistance range
(1)
Resistance tolerance and series
Maximum dissipation at T
amb
= 70
擄
C
Thermal resistance R
th
Temperature coefficient:
0.22
鈩?鈮?/div>
R
鈮?/div>
4.7
鈩?/div>
4.7
鈩?/div>
<
R
鈮?/div>
15
鈩?/div>
15
鈩?/div>
<
R
鈮?/div>
15 k
鈩?/div>
Maximum permissible voltage (DC or RMS)
Basic specifications
Climatic category (IEC 60068)
Stability after:
load
climatic tests
soldering
Note
1. Ohmic values (other than resistance range) are available on request.
鈭?/div>
R/R max.:
鹵
1 % + 0.05
鈩?/div>
鈭?/div>
R/R max.:
鹵
1 % + 0.05
鈩?/div>
鈭?/div>
R/R max.:
鹵
0.25 % + 0.05
鈩?/div>
鈮?/div>
鹵
200
脳
10
鈭?/div>
6
/K
鈮?/div>
鹵
200
脳
10
鈭?/div>
6
/K
鈮?/div>
鹵
100
脳
10
鈭?/div>
6
/K
250 V
IEC 60115-1 and 60115-2
55/155/56
鈮?/div>
鹵
200
脳
10
鈭?/div>
6
/K
鈮?/div>
鹵
100
脳
10
鈭?/div>
6
/K
鈮?/div>
鹵
100
脳
10
鈭?/div>
6
/K
350 V
0.33 W
240 K/W
VALUE
NFR25
0.22
鈩?/div>
to 15 k
鈩?/div>
鹵
5 %; E24 series
0.5 W
150 K/W
NFR25H
12NC ORDERING CODE INDICATING RESISTOR TYPE AND PACKAGING
ORDERING CODE 23.. ... .....
BANDOLIER IN AMMOPACK
TYPE
RADIAL TAPED
4000
units
NFR25
NFR25H
06 204 03...
06 207 03...
1000
units
22 205 13...
22 207 13...
STRAIGHT LEADS
5000
units
22 205 33...
22 207 33...
BANDOLIER
ON REEL
STRAIGHT LEADS
5000
units
22 205 23...
22 207 23...
Document Number: 28737
Revision: 24-Feb-04
For technical questions contact: ff3dresistors@vishay.com
www.vishay.com
1

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