Approval Sheet
for
Power Wirewound Resistor
Flame-Proof & Safety Type
PNS Series
±5%
YAGEO CORPORATION
Headquarters:
3F, No.233-1, Pao Chiao Rd., Xindian, Taipei, Taiwan, R.O.C.
Tel:
886-2-6629-9999
Fax:
886-2-6628-8885
URL: www.yageo.com
Page-1
Rev.
00
01
02
Description
issue new spec.
Revised the power rating code and the
thermal resistance
Revised the marking method.
Issue Date
May 29, 2012
Jul. 29, 2015
Jul. 31, 2015
Drawn
Feng Ye
Feng Ye
Feng Ye
Approved
Ken Hsu
Flora Shen
Flora Shen
Description
Series
Power Wirewound Resistors, Flame-Proof & Safety Type
PNS
Rev.
02
Page-2
1.
PRODUCT:
Resistors of series PNS are wound on ceramic carriers, all-welded contacts. Coated, the resistors comply
with all requirements for precision and high ratings.
FLAME-PROOF & SAFETY TYPE
Body colour: Grey
2.
PART NUMBER:
Part number of the precision power wirewound resistor is identified by the name, power, tolerance,
packing, temperature coefficient, special type and resistance value.
Example：
PNS
100
J
T
-
52-
10R
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Series Power Resistance Packing Temperature Special Resistance
Name Rating Tolerance Style
Coefficient
Type
Value
of Resistance
(1) Style: PNS SERIES
(2) Power Rating : 100=1W、180=1.8W、230=2.3W、270=2.7W、360=3.6W、450=4.5W
(3) Tolerance:
J=±5%
T＝Tape on Box Packing
(4) Packaging Type:
(5) Temperature Coefficient
：”-“=Base
on spec.
(6) Special Type：
52-=52.4mm
73-=73mm
52G= 52.4mm packing withψ d=0.65±0.05mm
52Z= 52.4mm packing with spacing 10mm for PNS230 (Normal spacing is
5mm)
(7) Resistance Value：E24 Series
Example： 1R、10R、100R、……
Page-3
3.
MARKING:
4.
ELECTRICAL CHARACTERISTICS
TABLE I
STYLE
Power Rating at 70
℃
Max. Cont. Work. Voltage
Thermal resistance (℃/W)
Resistance Range
Tolerances
Temperature Coefficient
Insulation Voltage (1min.)
Operating Temp. Range
PNS100
1W
P
70
R
PNS180
1.8W
PNS230
2.3W
127
PNS270 PNS360 PNS450
2.7W
3.6W
4.5W
103
77
62
280
155
1R~100R
1R~240R 1R~330R
±5%
120 ± 50 ppm/℃
Max. 500V
- 55
℃
to + 350
℃
＊
Below or over this resistance on request.
5.
DERATING CURVE
Page-4
6.
SAFETY CHARACTERISTIC
The special construction of resistance values >10R results in an immediate interruption (<1s, 230ms
typical ),when mains voltage (220V/240V
RMS
) is applied. No flames, no explosion. After fusing, the
resistance value is >100KOhm.
For other voltages test suitability in the application!
* Resistance values < 10R are flame retardant.
The interruption mechanism is not clearly defined and has to be tested in the final application!
7.
DIMENSIONS
STYLE
PNS100
PNS180
PNS230
PNS270
PNS360
PNS450
*R<10R Dmax. +1
DIMENSIONS (unit: mm)
Lmax.
9.0
9.7
14.5
12.6
17.0
18.0
ψ D* max.
3.0
4.0
4.5
6.0
6.0
8.5
ψ d ±0.1
0.65
0.80
0.65
0.80
0.80
0.80
8.
ENVIRONMENTAL CHARACTERISTICS
(1) Voltage Proof
The resistor shall be clamped in the trough of a 90° metal V Block. Apply the insulation voltage specified
in the “Table I “ between the terminals connected together with the block for about 60 seconds.
The resistor shall be able to withstand without breakdown or flashover.
(2) Temperature Coefficient Test
Test of resistors above room temperature 100°C
±
2°C ( Testing Temperature 115°C to 130°C ) at the
constant temperature silicon plate for over 5 minutes. Then measure the resistance value.
The Temperature Coefficient is calculated by the following equation and its value should be within the
range of requested.
Re sistor Temperature Coefficient
½
R
R
0
1
10
6
R
0
t
t
0
Page-5
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