3. Model designation .......................................................................................................................................... 2
10. Industrial property rights .............................................................................................................................. 19
11. Other ............................................................................................................................................................ 19
Form No. 032
HOKURIKU ELECTRIC INDUSTRY CO., LTD.
Standard No.
CR-D-8049
Revision code
Designation of standard
Product standard
Page
2/19
1. Scope
This standard is applied to the corner type High Voltage CR HCR Type series.
2. Relevant documents
JIS C 5201
Common Rules for Fixed Resistors for Electronics Equipment
JIS C 5201-1 Method of Testing Fixed Resistors for Electronics Equipment
JIS C 0806
Taping of Electronics Parts (Surface Mounting Devices)
3. Model designation
A model designation shall be composed as follows:
(1) shall represent the designation of the article. (See clause 4-1.)
HCR32 - 305
J
V
(2) shall represent the nominal resistance. (See clause 4-5.)
(1)
(2)
(3)
(4)
(3) shall represent the resistance allowance. (See clause 4-6.)
(4) shall represent the form of packing. (For details, see clause 7.)
Code
V
B
Form of packing
Paper taping
Bulk
4. Ratings
4-1. Rated power: The rated power shall be as follows:
Rated
power
(W)
0.250
Temperature
coefficient at zeroeth
order of the resistance
(ppm/°C)
±200
Maximum
operating
voltage (V)
500
Maximum
overload
voltage (V)
1000
Article
designation
HCR32
Resistance
allowance
F(±1%)
J(±5%)
Resistance
range (Ω)
160k½20M
160k½20M
4-2. Operating temperature range
-55°C to 125°C
4-3. Maximum power (maximum current)
With the rated ambient temperature set to 70°C, the
maximum power (the maximum current for a 0Ω product) at
a temperature of no more than the rated ambient temperature
shall be equal to the rated power . The maximum power at a
temperature exceeding the rated ambient temperature shall be
a value determined by reducing the rated power according to
the power reduction curve on the right-hand figure.
Rated power ratio (%)
100
80
60
40
20
0
Power reduction curve
--55
0
70
125
Ambient temperature (°C)
Form No. 032
HOKURIKU ELECTRIC INDUSTRY CO., LTD.
Standard No.
CR-D-8049
4-4. Rated voltage
Revision code
Designation of standard
Product standard
Page
3/19
The rated voltage shall be the DC or AC (effective power frequency) voltage corresponding to the rated power
and shall be determined with the formula given below. However, if the determined rated voltage exceeds the
maximum operating voltage specified in clause 4-1, that maximum operating voltage shall be the rated voltage.
E: Rated voltage (V)
P: Rated power (W)
Ｅ＝ Ｐ×Ｒ
R: Nominal resistance (Ω)
4-5. Nominal resistance
The nominal resistance shall be in ohms (Ω), and shall be 10
n
times (n is an integer) the value in the sequences
E24 and E96 in the table below.
Sequence E24
1.6
1.8
5.1
5.6
1.0
3.3
1.1
3.6
1.2
3.9
1.3
4.3
1.5
4.7
2.0
6.2
2.2
6.8
2.4
7.5
2.7
8.2
3.0
9.1
4-6. Resistance allowance
The resistance allowance shall come in the two values shown below. The combinations of the standard value of
nominal resistance and resistance allowance shall be as in the table below.
Resistance allowance
±1%
±5%
Code
F
J
Standard value of nominal resistance
Sequence E24
Form No. 032
HOKURIKU ELECTRIC INDUSTRY CO., LTD.
Standard No.
CR-D-8049
4-7. Structural diagram
Revision code
Designation of standard
Product standard
Page
4/19
③
④
⑤
⑥
⑦
⑧
②
①
Code
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
Designation of
component
Ceramics board
Rear electrode
Surface electrode
Resistor
Protective coat I
Protective coat II
Stamp
Side electrode
Internal electrode
External electrode
⑨
⑩
Material
Alumina 96%
Glass-based Ag
Glass-based Ag-Pd
Based on ruthenium oxide
Glass-based
Resin-based
Resin -based
Resin -based Ag
Ni plated (plating 2-12μm thick)
Sn plating (Sn 100%) (plating 2-12μm thick)
4-8. Dimensions
L
c
W
t
d
[mm]
Form of
packing
Taped bulk
Article
HCR32
L
3.2±0.10
W
1.6±0.10
c
0.5±0.2
d
0.5±0.2
t
0.50±0.10
Form No. 032
HOKURIKU ELECTRIC INDUSTRY CO., LTD.
Standard No.
CR-D-8049
Revision code
Designation of standard
Product standard
Page
5/19
5. Appearance and marking
5-1. Appearance
All products shall be free of considerable scratches, cracks, and other anomalies when visually tested.
5-2. Product marking
All products shall be marked with their nominal resistance values, as described in the table below.
Location of
marking
Marking color
Method of
marking
Overcoat top of resistor
White
Marking in 3 digits (E24)
The first two numbers shall be effective numbers in ohms (Ω). The third digit shall represent the
number of zeros following the effective numbers.
3MΩ
Application: HCR32
305
(1) Decimal points shall be represented in Rs. In this case, all shall be effective numbers.
