Through-hole resistors
Fiberglass Cement Resistors
Power Wirewound &
Axial Lead Type
Normal & Miniature Style [ PSP Series ]
FEATURES
Power Rating
4W, 5W, 7W, 9W, 11W, 17W
Resistance Tolerance
±5%, ±10%
T.C.R
400±50ppm/°C
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
INTRODUCTION
The PSP Series Resistors are wound on
Fiberglass core. The materials used and the
construction techniques ensure excellent
flame resistance, arc resistance and moisture
resistance as well as self-extinguishing
capabilities. They will withstand the most
rigorous loading test.
70
Rated Load (%)
350 °C
100
80
60
40
20
0
-50
As resistors in radio and television receivers,
hazardous conditions such as smoking and
redheat can be completely prevented by the
proper choice of power resistors.
0
50
Ambient Temperature (°C)
100 150 200 250 300 350
DIMENSIONS
Unit: mm
STYLE
36±3
L
36±3
W
H
*
*
ød
* 6mm, reduced solderability in this area
DIMENSION
Normal
Miniature
L
W
H
ød
PSP400
-
20±1.0
6.4±0.3
6.4±0.3
0.8±0.02
PSP500
-
25±1.0
6.4±0.3
6.4±0.3
0.8±0.02
-
PSP7WS
25±1.0
9.0±0.3
9.0±0.3
0.8±0.02
PSP700
-
38±1.0
6.4±0.3
6.4±0.3
0.8±0.02
PSP900
-
38±1.0
9.0±0.3
9.0±0.3
0.8±0.02
PSP11A
-
50±1.5
9.0±0.3
9.0±0.3
0.8±0.02
PSP17A
-
75±2.0
9.0±0.3
9.0±0.3
0.8±0.02
61
Note:
ELECTRICAL CHARACTERISTICS
STYLE
PSP400
PSP500
PSP7WS
Power Rating at 70°C
4W
5W
7W
Maximum working voltage
PxR
Voltage Proof on Insulation
2000V
Resistance Range
0.1 Ω - 9.1K Ω
Operating Temp. Range
-55°C to +350°C
Temperature Coefficient
400±50ppm/°C
0.15 Ω - 15K Ω
PSP700
PSP900
PSP11A
PSP17A
9W
11W
17W
0.51 Ω - 47K Ω
0.91 Ω - 82K Ω
0.33 Ω - 33K Ω
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
IEC 60115-1 4.13
10 times rated power for 5 Sec.
±2.0%+0.05Ω
Voltage Proof on Insulation
IEC 60115-1 4.7
In V-Block for 60 sec., test voltage as above table
No Breakdown
Temperature Coefficient
IEC 60115-1 4.8
Between -40°C to +155°C
By type
Insulation Resistance
IEC 60115-1 4.6
in V-block for 60 Sec.
>10,000MΩ
Solderability
IEC 60115-1 4.17
245±5°C for 3±0.5 Sec.
95% Min. coverage
Solvent Resistance of Marking
IEC 60115-1 4.30
IPA for 5±0.5 Min. with ultrasonic
No deterioration of
coatings and markings
Robustness of Terminations
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of the terminal leads
≥50N
Periodic-pulse Overload
IEC 60115-1 4.39
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
±2.0%+0.05Ω
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
±2.0%+0.05Ω
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV (or Umax., Whichever less) for 1,000 Hr. (1.5Hr.on, 0.5Hr. Off) ±3.0%+0.05Ω
Temperature Cycling
IEC 60115-1 4.19
-55°C Room Temp. +155°C Room Temp. (5 cycles)
±2.0%+0.05Ω
Resistance to Soldering Heat
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body
±0.2%+0.05Ω
Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
Revision: 2020
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