PILKOR components
High ohmic high voltage non inductive resistors
FEATURES
High voltage & ohmic
Non inductive
Low T.C.R
Excellent stability to heat and moisture
HNR
APPLICATIONS
High voltage dividers
Measurements (high voltage)
Medical (Imaging, Blood analyzers)
Military (Rader, Raser, Plasma)
DESCRIPTION
The high ohmic high voltage non inductive resistor is constructed with resistive
paste printed to a ceramic rod. Tin alloy end caps and axial leads complete
the assembly Encapsulation is coated by high performance epoxy powder (black)
DIMENSIONS
l
L1
L2
D
d
TYPE
HNR 0.25
HNR 0.5
HNR 1.5
HNR 2.5
HNR 3.0
HNR 4.5
Dimensions ( mm )
L1
79
4.5
85
4.5
94
4.5
110
4.5
123
4.5
136
5
L2
19
1.5
25
1.5
24
1.5
40
1.5
53
1.5
66
2.0
ㅣ
1.5
30
30
35
35
35
35
D
5.5
1.5
5.5
1.5
8
1.0
8
1.0
8
1.0
8
1.0
d
0.05
0.8
0.8
1.0
1.0
1.0
1.0
- 106 -
PILKOR components
High ohmic high voltage non inductive resistors
QUICK REFERENCE DATA
DESCRIPTION
resistance range
resistance tolerance
temperature coefficient
rated dissipation
at T
amb
= 70
℃
max. working voltage
climatic category
Insulation Resistance
damp heat steady state
0.5%
+0.1
0.5%
+0.1
0.25W
2.5kV
0.5W
4.5kV
HNR
VALUE
HNR0.25
HNR 0.5
HNR 1.5
HNR 2.5
HNR 3.0
HNR 4.5
1M ~
1G
100K ~ 500M
100K ~ 1G
5%,
2%,
1%
80 PPM/℃
1.5W
5.0kV
2.5W
10.0kV
3.0W
15.0kV
4.5W
22.5kV
-40℃~ +200℃
>10,000
㏁
at DC500V
0.5%
+0.1
0.5%
+0.1
0.5%
+0.1
0.5%
+0.1
ORDERING INFORMATION
Ordering code indicating resistor types and packing
Table 1. Ordering code
Type
HNR 0.25
Packing
Quantity
Resistance range
Tol. (
%)
1
2
5
1
2
5
1
2
5
1
2
5
1
2
5
1
2
5
Ordering code
PHNR 260 4 xxxx
PHNR 260 14 xxx
PHNR 260 13 xxx
PHNR 261 4 xxxx
PHNR 261 14 xxx
PHNR 261 13 xxx
PHNR 262 4 xxxx
PHNR 262 14 xxx
PHNR 262 13 xxx
PHNR 263 4 xxxx
PHNR 263 14 xxx
PHNR 263 13 xxx
PHNR 264 4 xxxx
PHNR 264 14 xxx
PHNR 264 13 xxx
PHNR 265 4 xxxx
PHNR 265 14 xxx
PHNR 265 13 xxx
HNR 0.5
100K ~ 500M
HNR 1.5
bulk
HNR 2.5
100K ~ 1G
HNR 3.0
10 pcs
HNR 4.5
1M ~ 1G
Table 2. Last digit of 12NC
Resistance decade
100 to 976
㏀
1 to 9.76
㏁
10 to 97.6
㏁
100 to 976
㏁
Ordering Example
The ordering code of a HNR0.25W resistor, value 1
㏁,
1%,
is: PHNR 260 41005
- 107 -
Last digit
4
5
6
7
PILKOR components
High ohmic high voltage non inductive resistors
Limiting values
Table 3
TYPE
HNR 0.25
HNR 0.5
HNR 1.5
HNR 2.5
HNR 3.0
HNR 4.5
Note
LIMITING VOLTAGE
( 1 )
(V)
2.5 KV
4.5 KV
5.0 KV
10.0 KV
15.0 KV
22.5 KV
HNR
LIMITING POWER
(W)
0.25W
0.5W
1.5W
2.5W
3.0W
4.5W
1. the maximum voltage that may be continuously applied to the resistor element, see
“IEC publication 60 115-1”
The maximum permissible hot – spot temperature is 200℃.
Derating curve
The power that the resistor can dissipate depends on the operating temperature : Fig. 1
P
max
.
( %)
100
50
0
-55
0
25
50
100
T
amb
. (
℃
)
200
Fig. 1 Maximum dissipation (P
max
) in percentage of rated power as a function of the
ambient temperature (T
amb
)
- 108 -
PILKOR components
High ohmic high voltage non inductive resistors
MECHANICAL DATA
Table 4. Mass per 100 units
TYPE
HNR 0.25
HNR 0.5
HNR 1.5
HNR 2.5
HNR 3.0
HNR 4.5
MASS ( g )
156
200
500
650
856
1060
HNR
TEST AND REQUIREMENTS
Table 5. Test procedures and requirements
TEST
tensile all samples
PROCEDURE
load 10kg∙ f; 10s
REQUIREMENTS
no visible damage
R/R
max
. :
(0.5% +0.05)
good tinning ; no damage
solderability
resistance to
soldering heat
rapid change of
temperature
damp heat
(steady state)
endurance (at 70℃)
temperature
coefficient
insulation resistance
2s; 235℃; flux 600
thermal shock: 3s; 350℃; 2.5mm
R/R
max
. :
(0.2% +0.1)
from body
30minutes at –40℃ and
30minutes at 125℃;
500cycles
56days; 40℃; 90 to 95% RH
R/R
max
. :
(3% +0.05)
no visible damage
R/R
max
. :
(0.5% +0.1)
no visible damage
R/R
max
. :
(1% +0.1)
80ppm/℃
R
min
. : 10,000
㏁
1000hours; P
n
or V
max
.
between -40℃ and +125℃
500V
DC
during 1minute
Overload /
overvoltage
5 times rated power with applied
voltage not to exceed 1.5 times
R/R
max
. :
(0.5% +0.1)
maximum continuous operating
voltage for 5 seconds
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