RIEDON

100 Series, SM Series, PC Series
Precision Wirewound Resistors
RIEDON
Resistances to 25 Megohms
Tolerance to ±0.005%
Temperature Coefficients to ±1ppm/°C
Power Rating to 2 Watts
100% Acceptance Tested, Traceable to NIST
Long Term Stability, 100ppm/year
Matched Resistance Sets to ±0.001% and ±0.5ppm/°C
Riedon's precision resistors are designed for critical applications that require very accurate and
stable resistance values. They are available in a subminiature series, the standard 100 series and a
special low-reactance version for fast rise time applications.
These precision resistors are non-inductively wound on molded bobbins. The solderable and
weldable leads are tinned copper. Internally, they are welded for highest precision and reliability.
All Precision resistors are aged to insure stability. A protective coating insulates the windings
and protects the welds. The bobbin is encapsulated using a specially formulated epoxy so temperature
expansion coefficients of all materials are closely matched.
SPECIFICATIONS
Standard Tolerances Temperature Coefficient -
± 0.005% to ± 1% ( See Derating Curve)
R >100 W ; ±10ppm/°C
10 W <= R <= 99.9 W ; ±20ppm/°C
R <10 W ; ±30ppm/°C
Fast Rise Time Most precision resistors are available in low reactance designs for fast rise time and extended
frequency response applications. Call the factory for information and specifics.
Ordering information:
Part Number - Resistance - Tolerance - TCR
Example: 106 - 1.49K Ohm - 0.01% - 5ppm
Percentage of Rated Power
High Stability All precision resistors are available in High Stability versions with a maximum resistance
change of ±20ppm/year under normal conditions. Specify the Prefix “S” when ordering.
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
1%, 0
.5%,
0.05%,
0.1%
0.02%
Toler
a
nce
Toleran
c
0.01% T
olerance
e
0.005% Tolerance
0 10 20
30 40 50 60 70 80 90 100 110 120 130 140 150 160
Ambient Temperature °C
Riedon Inc.
REV 7/03
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
Fax: (626) 284-1704
100 Series, SM Series, PC Series
Precision Wirewound Resistors
RIEDON
Standard 100 Series
Type
Commercial Maximum
Wattage
Resistance
Minimum
Tolerance
Diameter
±0.005”
Length
±0.025”
Maximum
Voltage
Lead Diameter
AWG*
100
0.20
800K
0.005
0.250
0.375
200
20 / 22
101
0.25
1.2M
0.005
0.250
0.500
300
20 / 22
102
0.33
2.5M
0.005
0.250
0.750
400
20 / 22
103
0.50
7.5M
0.005
0.375
0.885
400
20
104
0.50
7.0M
0.005
0.500
0.500
400
20
105
0.60
7.0M
0.005
0.500
0.625
400
20
106
1.00
12M
0.005
0.500
1.000
800
20
107
1.50
15M
0.005
0.500
1.500
900
20
108
2.00
25M
0.005
0.500
2.000
1000
20
120
0.40
3.8M
0.005
0.375
0.500
300
20
121
0.50
3.8M
0.005
0.375
0.750
400
20
129
0.75
10M
0.005
0.375
1.000
600
20
139A
0.15
500K
0.005
0.250
0.250
100
22
153
1.75
15M
0.005
0.500
1.750
900
20
* Lead Diameter: 20 AWG = 0.032”; 22 AWG = 0.025”; Lead Length = 1.50” Min.
Subminiature Series
Type
Commercial Maximum
Wattage
Resistance
Minimum
Tolerance
Diameter
±0.005”
Length
±0.025”
Maximum
Voltage
Lead Diameter
AWG*
SM-2
0.06
75K
0.1
0.100
0.210
75
24
SM-3
0.08
150K
0.05
0.125
0.260
100
22 / 24
SM-4
0.10
250K
0.05
0.125
0.375
100
24
SM-5
0.12
400K
0.01
0.187
0.250
150
22
SM-6
0.15
500K
0.01
0.187
0.295
150
22
SM-7
0.25
1M
0.005
0.210
0.465
250
22
SM-12
0.20
750K
0.005
0.187
0.450
200
22
SM-13
0.10
250K
0.05
0.156
0.312
100
24
SM-15
0.175
750K
0.005
0.187
0.375
200
22 / 24
* Lead Diameter: 22 AWG = 0.025”; 24 AWG = 0.020”; Lead Length = 1.50” Min.
Printed Circuit Series
Type
Commercial Maximum
Wattage
Resistance
Diameter
±0.005”
Length
±0.025”
Maximum
Lead
Voltage Spacing AWG*
100PC
0.125
500K
0.250
0.375
150
0.15
101PC
0.250
600K
0.250
0.500
150
0.15
22
104PC
0.500
1M
0.500
0.500
400
0.30
22 / 20
120PC
0.400
800K
0.375
0.500
300
0.20
20
130PC
0.125
500K
0.250
0.312
150
0.15
22
131PC
0.125
500K
0.250
0.312
150
0.20
22
SP5131
0.050
75K
0.130
0.200
150
0.10
26
* Lead Diameter: 20 AWG = 0.032”; 22 AWG = 0.025”; 26 AWG = 0.016”
Lead Spacing Tolerance = ±0.015”, Lead Length = 1.00” Min.
Rectangular Series
Type
22
Commercial Maximum
Wattage
Resistance
W
H
L
Maximum
Lead
±0.010” ±0.025” ±0.010” Voltage Spacing AWG*
SM-8
0.125
500K
0.140
0.250
0.270
15
0.125
22 / 20
SM-9
0.250
750K
0.150
0.270
0.540
150
0.250
20
SP5086
0.300
500K
0.102
0.320
0.300
150
0.150
22
SP5232
0.500
1M
0.160
0.525
0.585
150
0.400
20
* Lead Diameter: 20 AWG = 0.032”; 22 AWG = 0.025”; 26 AWG = 0.016”
Lead Spacing Tolerance = ±0.015”, Lead Length = 1.00” Min.
Riedon Inc.
REV 7/03
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
Fax: (626) 284-1704