鈥?/div>
Video.
DESCRIPTION
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?.
ORDERING INFORMATION
Ordering code (12NC)
鈥?/div>
The resistors have a 12-digit
ordering code starting with 23
鈥?/div>
The subsequent 7 digits indicate
the resistor type and packaging;
see Table 1.
鈥?/div>
The remaining 3 digits indicate the
resistance values:
鈥?The first 2 digits indicate the
resistance value.
鈥?The last digit indicates the
resistance decade in
accordance with Table 2.
NFR25
NFR25H
Table 2
TYPE
RADIAL
TAPED
4000 units
06 204 03...
06 207 03...
Last digit of 12NC
LAST DIGIT
8
9
1
2
3
STRAIGHT LEADS
1000 units
22 205 13...
22 207 13...
QUICK REFERENCE DATA
NFR25/25H
VALUE
DESCRIPTION
NFR25
Resistance range
Resistance tolerance and series
Maximum dissipation at T
amb
= 70
擄C
Thermal resistance (R
th
)
Temperature coef鏗乧ient:
1
鈩?鈮?/div>
R
鈮?/div>
4.7
鈩?/div>
4.7
鈩?<
R
鈮?/div>
15
鈩?/div>
15
鈩?<
R
鈮?/div>
15 k鈩?/div>
Maximum permissible voltage
(DC or RMS)
Basic speci鏗乧ations
Climatic category (IEC 60068)
Stability after:
load
climatic tests
soldering
Table 1
鈭哛/R
max.:
鹵1%
+ 0.05
鈩?/div>
鈭哛/R
max.:
鹵1%
+ 0.05
鈩?/div>
鈭哛/R
max.:
鹵0.25%
+ 0.05
鈩?/div>
鈮ぢ?00 脳
10
鈭?
/K
鈮ぢ?00 脳
10
鈭?
/K
鈮ぢ?00 脳
10
鈭?
/K
250 V
鈮ぢ?00 脳
10
鈭?
/K
鈮ぢ?00 脳
10
鈭?
/K
鈮ぢ?00 脳
10
鈭?
/K
350 V
NFR25H
1
鈩?/div>
to 15 k鈩?/div>
鹵5%;
E24 series
0.33 W
240 K/W
0.5 W
150 K/W
IEC 60115-1 and 60115-2
55/155/56
Ordering code indicating resistor type and packaging
ORDERING CODE 23.. ... .....
BANDOLIER IN AMMOPACK
BANDOLIER
ON REEL
STRAIGHT
LEADS
5000 units
22 205 23...
22 207 23...
5000 units
22 205 33...
22 207 33...
O
RDERING EXAMPLE
The ordering code for a NFR25
resistor with value 750
鈩?
supplied on
a bandolier of 1000 units in
ammopack is: 2322 205 13751.
RESISTANCE
DECADE
1 to 9.1
鈩?/div>
10 to 91
鈩?/div>
100 to 910
鈩?/div>
1 to 9.1 k鈩?/div>
10 to 15 k鈩?/div>
1998 Aug 28
1
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