Page 26
Metal Oxide Mini Series Resistors
SEI
Type RSM
•
Ideal Substitute Where Size Restraints Apply
1
•
Low Cost Alternative for Power Carbon Composition
and Wirewounds
•
Flameproof – Meets Overload Test of UL #1412
•
Meets Solvent Test of Method 215 of MIL-STD-202
•
Temperature Coefficient of
±200ppm/°C
•
Green Body Color
•
Coating Meets UL 94V-0
RSM 1/2
1/2 @70°C
200°C
√PR
or 250V
whichever is less
-55°C to +200°C
±5%, ±2%
and
±1%
0.1Ω – 47K (±5%)
0.1Ω – 47K (±2%)
0.1Ω – 47K (±1%)
400 volts RMS
400V
10,000 meg min.
100 meg min.
±1.5%
±1%
±2%
±0.5%
±(0.5%+0.05Ω)
±0.5%
.001%/V
±(0.5%+0.05Ω)
±0.5%
PERFORMANCE CHARACTERISTICS (TESTED PER MIL-R-22684)
ELECTRICAL
Power Rating (Watts)
Derated to 0 Load at
Maximum Working Voltage
Operating Temperature Range
Tolerance
Resistance Range
2
RSM 1
1 @70°C
200°C
√PR
or 350V
whichever is less
-55°C to +200°C
±5%, ±2%
and
±1%
0.1Ω – 75K (±5%)
0.1Ω – 75K (±2%)
0.1Ω – 75K (±1%)
600 volts RMS
750V
10,000 meg min.
100 meg min.
±1.5%
±1%
±2%
±0.5%
±(0.5%+0.05Ω)
±0.5%
.001%/V
±(0.5%+0.05Ω)
±0.5%
RSM 2
2 @70°C
200°C
√PR
or 350V
whichever is less
-55°C to +200°C
±5%, ±2%
and
±1%
0.1Ω – 100K (±5%)
0.1Ω – 100K (±2%)
0.1Ω – 100K (±1%)
600 volts RMS
750V
10,000 meg min.
100 meg min.
±1.5%
±1%
±2%
±0.5%
±(0.5%+0.05Ω)
±0.5%
.001%/V
±(0.5%+0.05Ω)
±0.5%
RSM 3
3 @70°C
200°C
√PR
or 350V
whichever is less
-55°C to +200°C
±5%, ±2%
and
±1%
3
0.1Ω – 120K (±5%)
0.1Ω – 120K (±2%)
0.1Ω – 120K (±1%)
600 volts RMS
750V
10,000 meg min.
100 meg min.
±1.5%
±1%
±2%
±0.5%
±(0.5%+0.05Ω)
±0.5%
.001%/V
±(0.5%+0.05Ω)
±0.5%
RSM 5
5 @70°C
200°C
√PR
or 500V
whichever is less
-55°C to +200°C
±5%, ±2%
and
±1%
3
1Ω – 150K (±5%)
100Ω – 4.99K (±2%)
100Ω – 4.99K (±1%)
800 volts RMS
1000V
10,000 meg min.
100 meg min.
±1.5%
±1%
±2%
±0.5%
±(0.5%+0.05Ω)
±0.5%
.001%/V
±(0.5%+0.05Ω)
±0.5%
Dielectric Withstand Voltage
3
Maximum Pulse Voltage
Insulation Resistance
(Dry)
(Wet)
4
Moisture Resistance
Thermal Shock
Load Life @ 70°C — 1,000 hrs
Shock and Vibration
Resistance to Soldering Heat
Terminal Strength
Voltage Coefficient
Short Time Overload
Low Temperature Operation
ENVIRONMENTAL (Operating Temperature Range: -55°C to +200°C)
DIMENSIONS:
FEATURE
A – Lead Length (typ.)
B – Body Length
C – Lead Diameter
D – Body Diameter
6
Inches (mm)
RSM 2
RSM 3
RSM 5
RSM 1/2
RSM 1
1.10
±.08
(28.0
±2.0)
1.10
±.08
(28.0
±2.0)
1.10
±.08
(28.0
±2.0)
1.50
±.12
(38.0
±3.0)
1.50
±.12
(38.0
±3.0)
.98
±.08
(25.0
±2.0)
.59
±.02
(15.0
±0.5)
.43
±.02
(11.0
±0.5)
.35
±.02
(9.0
±0.5)
.24
±.01
(6.0
±0.3)
.024±.002 (0.60±0.05) .028±.002 (0.70±0.05) .031±.002 (0.80±0.05) .031±.002 (0.80±0.05) .031±.002(0.80±0.05)
.34
±.06
(8.5
±1.5)
.22
±.04
(5.5
±1.0)
.16
±.02
(4.0
±0.5)
.12
±.01
(3.0
±0.3)
.09
±.01
(2.3
±0.2)
ORDERING INFORMATION
RSM
1/2
1K
5%
NOTES
1. SEI Type RSM is smaller than the industry standard.
2. E96 values for 1%, E24 values for 5%
3.
±0.5%
4. After moisture resistance.
5. Available with swaged leads (see page 45).
6. Dimensions are for bulk packaged product only.
Type
Wattage
Resistance
Tolerance
SEI Electronics Inc.
•
P.O. Box 58789
•
Raleigh, NC 27658-8789
•
Telephone: (919) 850-9500
•
FAX: (919) 850-9504
Toll Free: (888) SEI-SEI-SEI
•
www.seielect.com
•
email: marketing@seielect.com
•
ISO 9002 / QS 9000 Registered
Rev. 12/00
Page 27
Metal Oxide Resistors
Performance Curves
PERFORMANCE CURVES
Power - Temperature Derating
Current Noise
Surface Temperature Rise vs. Load - Type RS
Surface Temperature Rise vs. Load - Type RSM
SEI Electronics Inc.
•
P.O. Box 58789
•
Raleigh, NC 27658-8789
•
Telephone: (919) 850-9500
•
FAX: (919) 850-9504
Toll Free: (888) SEI-SEI-SEI
•
www.seielect.com
•
email: marketing@seielect.com
•
ISO 9002 / QS 9000 Registered
Rev. 07/99
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