LEADED RESISTORS
DIMENSIONS Unit: mm
STYLE DIMENSION
Normal Non-Ind. H W S P
SQM200 NSM200 20±1.5 11.0±1.0 7.0±1.0 5+2-1
SQM300 NSM300 25±1.5 12.0±1.0 8.0±1.0 5+2-1
SQM500 NSM500 25±1.5 13.0±1.0 9.0±1.0 5+2-1
SQM700 NSM700 39±1.5 13.0±1.0 9.0±1.0 5+2-1
SQM10A NSM10A 51±1.5 13.0±1.0 9.0±1.0 5+2-1
SQM10S NSM10S 35±1.5 16.0±1.0 12.0±1.0 7+2-1
FEATURES
Power Rating 2W, 3W, 5W, 7W, 10W
Resistance Tolerance ±5%
T.C.R. ±300ppm/°C
DERATING CURVE TEMPERATURE RISE
Cement Resistors
Vertical Lead Type
Normal Style [ SQM Series ]
Non-Inductive Style [ NSM Series ]
INTRODUCTION
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.
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.
30025020015010050-50 0
100
80
60
40
20
70
3W-5W
7W-10W
2W
155 27540 °C
Rated Load
Ambient Temperature (°C)
(%)
12010080604020
250
200
150
100
50
10W
7W
5W
3W
2W
Temperature Rise
Rated Load (%)
(°C)
ø08±0.05
H
P
3.5±1
WS
67
Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value
ELECTRICAL CHARACTERISTICS
NORMAL STYLE
STYLE SQM200 SQM300 SQM500 SQM700 SQM10A SQM10S
Power Rating at 40°C 3W 5W 7W 10W
Power Rating at 70°C 2W
Maximum Working Voltage 250V 350V 500V
Maximum Overload Voltage 500V 700V 1,000V
Voltage Proof 500V 700V 1,000V
Resistance Range (Wirewound) 0.03 Ω - 36 Ω0.015 Ω - 68 Ω0.015 Ω - 130 Ω0.05 Ω - 330 Ω0.08 Ω - 510 Ω0.03 Ω - 270 Ω
Resistance Range (Metal Oxide Film)
12 Ω - 1M Ω75 Ω - 1M Ω150 Ω - 1M Ω360 Ω - 1M Ω560 Ω - 1M Ω300 Ω - 1M Ω
Operating Temp. Range -55°C to +155°C
Temperature Coefcient ±300ppm/°C
NON-INDUCTIVE STYLE
STYLE NSM200 NSM300 NSM500 NSM700 NSM10A NSM10S
Power Rating at 40°C 3W 5W 7W 10W
Power Rating at 70°C 2W
Maximum Working Voltage 250V 350V 500V
Maximum Overload Voltage 500V 700V 1,000V
Voltage Proof 500V 700V 1,000V
Resistance Range (Wirewound) 0.08 Ω - 10 Ω0.033 Ω - 30 Ω0.15 Ω - 65 Ω0.25 Ω - 100 Ω0.12 Ω - 100 Ω0.12 Ω - 50 Ω
Operating Temp. Range -55°C to +155°C
Temperature Coefcient ±300ppm/°C
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST TEST METHOD APPRAISE
Short Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. ±2.0%+0.05 Ω
Voltage Proof IEC 60115-1 4.7 in V-block for 60 Sec., test voltage by type By type
Temperature Coefcient IEC 60115-1 4.8 -55°C to +155°C By type
Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >1,000M Ω
Solderability IEC 60115-1 4.17 235±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 ≥2.5kg (24.5N)
Periodic-pulse Overload IEC 60115-1 4.39 4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off) ±2.0%+0.05 Ω
Damp Heat Steady State IEC 60115-1 4.24 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV ±5.0%+0.05 Ω
Endurance at 70°C IEC 60115-1 4.25 70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) ±5.0%+0.05 Ω
Temperature Cycling IEC 60115-1 4.19 -55°C Room Temp. +155°C Room Temp. (5 cycles) ±2.0%+0.05 Ω
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 ±1.0%+0.05 Ω
