100 Series / SM Series / PC Series
Precision Wirewound Resistors
•
•
•
•
•
•
•
Resistances to 6 Megohms
Resistance Tolerances to ±0.005%
Temperature Coefficients of ±2 ppm/°C
High TCR Available (Balco & Platinum Wire)
100% Acceptance Tested / Traceable to NIST
Long Term Stability / 100ppm/year
Matched Resistance Sets to ±0.001% and ±0.5 ppm/°C
SPECIFICATIONS
Type
Commercial
Wattage
( Watts )
0.06
0.08
0.10
0.10
0.12
0.15
0.15
0.175
0.20
0.20
0.25
0.25
0.33
0.40
0.50
0.75
1.00
1.50
2.00
Maximum Ohms
Minimum
Tolerance
(%)
Dimensions
Diameter
±0.005”
[±0.13mm]
Length
±0.025”
[±0.64mm]
Lead Diameter
1
±0.002”
[±0.05mm]
Maximum
Working
Voltage
75
100
100
100
150
150
100
200
200
200
250
300
400
300
400
600
800
900
1000
SM-2
SM-3
SM-4
SM-13
SM-5
SM-6
139A
SM-15
SM-12
100
SM-7
101
102
120
121
129
106
107
108
75k
150k
250k
250k
400k
500k
500k
750k
750k
1M
1M
1.2M
2.5M
3.8M
3.8M
6M
6M
6M
6M
0.005
0.100 [2.5]
0.125 [3.2]
0.125 [3.2]
0.156 [4.0]
0.187 [4.7]
0.187 [4.7]
0.250 [6.4]
0.187 [4.7]
0.187 [4.7]
0.250 [6.4]
0.210 [5.3]
0.250 [6.4]
0.250 [6.4]
0.375 [9.5]
0.375 [9.5]
0.375 [9.5]
0.500 [12.7]
0.500 [12.7]
0.500 [12.7]
0.210 [5.3]
0.260 [6.6]
0.375 [9.5]
0.312 [7.9]
0.250 [6.4]
0.295 [7.5]
0.250 [6.4]
0.375 [9.5]
0.450 [11.4]
0.375 [9.5]
0.465 [11.8]
0.500 [12.7]
0.750 [19.1]
0.500 [12.7]
0.750 [19.1]
1.000 [25.4]
1.000 [25.4]
1.500 [38.1]
2.000 [50.8]
1
0.020 [0.5]
0.020 [0.5]
0.025 [0.6]
0.020 [0.5]
0.020 [0.5]
0.025 [0.6]
0.025 [0.6]
0.025 [0.6]
0.025 [0.6]
0.025 [0.6]
0.032 [0.8]
0.025 [0.6]
0.025 [0.6]
0.032 [0.8]
0.025 [0.6]
0.032 [0.8]
0.025 [0.6]
0.032 [0.8]
0.032 [0.8]
0.032 [0.8]
0.032 [0.8]
0.032 [0.8]
0.032 [0.8]
Where more than one lead is listed / the top value is Standard
Lead Length = 1.50 [38] Min.
Ordering Information
Part Description: Part Type - Resistance - Tolerance - TCR ( If not standard )
Example: SM-6 25K Ohms 0.1%
Riedon Inc.
04/14
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
100 Series / SM Series / PC Series
Precision Wirewound Resistors
SPECIFICATIONS
(continued)
PC Series
Type
Commercial
Wattage
( Watts )
0.05
0.125
0.125
0.125
0.25
0.40
0.50
Maximum
Ohms
Minimum
Tolerance
1
(%)
Dimensions
Diameter
±0.005”
[±0.13mm]
Length
±0.025”
[±0.64mm]
Lead Diameter
2
±0.002”
[±0.05mm]
Lead Spacing
±0.015”
[±0.4mm]
Maximum
Working
Voltage
150
150
150
150
150
300
400
110PC
100PC
130PC
131PC
101PC
120PC
104PC
75k
500k
500k
500k
600k
800k
1M
0.005
0.130 [3.3]
0.250 [6.4]
0.250 [6.4]
0.250 [6.4]
0.250 [6.4]
0.375 [9.5]
0.500 [12.7]
0.200 [5.1]
0.375 [9.5]
0.312 [7.9]
0.312 [7.9]
0.500 [12.7]
0.500 [12.7]
0.500 [12.7]
2
0.016 [0.4]
0.025 [0.6]
0.025 [0.6]
0.025 [0.6]
0.025 [0.6]
0.032 [0.8]
0.032 [0.8]
0.025 [0.6]
0.075 [2.5]
0.150 [3.8]
0.150 [3.8]
0.200 [5.1]
0.150 [3.8]
0.200 [5.1]
0.300 [7.6]
Rectangular Series
Type
Commercial
Wattage
( Watts )
0.125
0.250
0.300
0.500
Dimensions
Maximum
Ohms
Width
±0.010”
[±0.25mm]
Height
±0.025”
[±0.64mm]
Length
±0.010”
[±0.25mm]
1
May not apply for all wire types. Please call factory.
Where more than one lead is listed / the top value is Standard
Lead Length = 1.00 [25] Min.
Lead Diameter
±0.002”
[±0.05mm]
1
Lead Spacing
±0.015”
[±0.4mm]
Maximum
Working
Voltage
150
150
150
150
SM-8
SM-9
SM-10
SM-11
500k
750k
500k
1M
0.140 [3.6]
0.150 [3.8]
0.102 [2.6]
0.160 [4.1]
0.250 [6.4]
0.270 [6.9]
0.320 [8.1]
0.525 [13.3]
0.270 [6.9]
0.540 [13.7]
0.300 [7.6]
0.585 [14.9]
0.032 [0.8]
0.032 [0.8]
0.025 [0.6]
0.032 [0.8]
0.125 [3.2]
0.250 [6.4]
0.150 [3.8]
0.400 [10.2]
1
Lead Length = 1.00 [25] Min.
Specification
Tolerances
Temperature Coefficient
( Standard )
( down to 1ppm on request )
Value
±0.005% to ±1% ( See Derating Curve )
>100Ω : ±10ppm/°C
10Ω to100Ω : ±20ppm/°C
<10Ω : ±30ppm/°C
-55°C to +145°C ( See Derating Curve )
Temperature Range
Power Derating Curve
180
Notes:
( Contact Factory for these options )
Fast Rise Time -
These resistors are available in a
low reactance design for fast rise time and extended
frequency response.
High Stability -
These resistors are available in a
High Stability version with maximum resistance
change of ±20ppm/year under normal conditions.
Wide TCR Range -
These resistors are available in
Low and High TC configurations from -20ppm/K to
+6000ppm/K.
Percentage of Rated Power
160
140
120
100
80
60
40
20
0
0
20
40
1% /
0.5%
/ 0.1%
0.05%
/ 0.02%
Toler
a
n ce
Tolera
n
e
ce
0.01% T
oleranc
0.005% Tolera
nce
60
80
100
120
140
160
Ambient Temperature °C
Riedon Inc.
04/14
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
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