Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2004 Caddock Electronics, Inc.
CAD
K
DOC
Specifications:
Resistance Tolerance: ±1% (tolerances to 0.1% on
special order).
Temperature Coefficient: 50 ppm/°C. TC referenced
to +25°C, ΔR taken at -15°C and +105°C.
Insulation Resistance: 10,000 Megohms, min.
Overload/Overvoltage: 5 times rated power with applied
voltage not to exceed 1.5 times maximum continuous oper-
ating voltage for 5 seconds. ΔR 0.5% max. or 0.5 ohm
max., whichever is greater.
Thermal Shock: Mil-Std-202, Method 107, Cond. C, ΔR
0.5% max. or 0.5 ohm max., whichever is greater.
Moisture Resistance: Mil-Std-202, Method 106, ΔR 0.5%
max. or 0.5 ohm max., whichever is greater.
Load Life: 1,000 hours at rated power at +25°C or
+125°C (see derating curve), not to exceed rated voltage,
Δ
R 0.5% max. or 0.5 ohm max., whichever is greater.
Maximum Operating Temperature: +275°C.
Encapsulation: High Temperature Silicone Conformal.
MS313, MS315
MS310
MS281
MS260
MS245
MS244
MS223
MS221
MS220
MS214
MS176, MS210
MS151, MS175
MS126, MS150
*Limited by power rating.
Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.
Models with low inductance construction are in shaded areas.
Ordering Information:
MS220 -100K - 1%
Model Number:
Resistor Value:
Tolerance
RATED POWER OR
RATED VOLTAGE, %
AMBIENT TEMPERATURE, °C
100
80
60
40
20
0
25
75
125
175
225 275
A
B
A - all MS models
except MS126,
MS151, MS176
B - MS126, MS151,
MS176
Derating Curve:
1.500 ± .125
(38.10 ± 3.18)
A
B
C
DIMENSIONS IN INCHES AND (MILLIMETERS)
MS322
Dielect.
Strength
Model
No.
C
Dimensions in inches and (millimeters)
Resistance
Min.
Max.
Max.
Voltage
B
A
.020 ±.002
(.51 ±.05)
.070 ±.015
(1.78 ±.38)
.188 ±.020
(4.78 ±.51)
MS126
0.25
500
20 Ω
1 Meg
200
.020 ±.002
(.51 ±.05)
.070 ±.015
(1.78 ±.38)
.188 ±.020
(4.78 ±.51)
MS150
0.50
500
20 Ω
2 K
.025 ±.002
(.64 ±.05)
.094 ±.015
(2.39 ±.38)
.250 ±.020
(6.35 ±.51)
MS151
0.50
750
20 Ω
2 Meg
300
.025 ±.002
(.64 ±.05)
.094 ±.015
(2.39 ±.38)
.250 ±.020
(6.35 ±.51)
MS175
0.75
750
20 Ω
2 K
.025 ±.002
(.64 ±.05)
.094 ±.015
(2.39 ±.38)
.313 ±.020
(7.95 ±.51)
MS176
0.75
750
45 Ω
5 Meg
500
.025 ±.002
(.64 ±.05)
.094 ±.015
(2.39 ±.38)
.313 ±.020
(7.95 ±.51)
MS210
1.0
750
45 Ω
3 K
.025 ±.002
(.64 ±.05)
.109 ±.025
(2.77 ±.64)
.313 ±.030
(7.95 ±.76)
MS214
1.0
750
45 Ω
5 Meg
500
.025 ±.002
(.64 ±.05)
.140 ±.030
(3.56 ±.76)
.400 ±.060
(10.16 ±1.52)
MS220
2.0
800
20 Ω 10 Meg
1,000
.032 ±.002
(.81 ±.05)
.165 ±.030
(4.19 ±.76)
.575 ±.050
(14.61 ±1.27)
MS221
3.0
800
45 Ω 10 Meg
1,000
.040 ±.002
(1.02 ±.05)
.230 ±.030
(5.84 ±.76)
.480 ±.060
(12.19 ±1.52)
MS223
3.0
1,000
20 Ω
4 Meg
800
.040 ±.002
(1.02 ±.05)
.230 ±.030
(5.84 ±.76)
.950 ±.060
(24.13 ±1.52)
MS244
4.0
1,000
45 Ω 15 Meg
2,000
.040 ±.002
(1.02 ±.05)
.300 ±.030
(7.62 ±.76)
.570 ±.060
(14.48 ±1.52)
MS245
4.0
1,000
20 Ω
6 Meg
800
.040 ±.002
(1.02 ±.05)
.300 ±.030
(7.62 ±.76)
.970 ±.060
(24.64 ±1.52)
MS260
6.0
1,000
45 Ω 15 Meg
2,000
.040 ±.002
(1.02 ±.05)
.350 ±.040
(8.89 ±1.02)
.910 ±.060
(23.11 ±1.52)
MS281
8.0
1,000
45 Ω
8 Meg
2,000
.040 ±.002
(1.02 ±.05)
.350 ±.040
(8.89 ±1.02)
1.250 ±.070
(31.75 ±1.78)
MS310 10.0
1,000
45 Ω 20 Meg
4,500
.040 ±.002
(1.02 ±.05)
.350 ±.040
(8.89 ±1.02)
2.000 ±.080
(50.80 ±2.03)
MS313 12.5
1,000
50 Ω 30 Meg
6,000
.040 ±.002
(1.02 ±.05)
.350 ±.040
(8.89 ±1.02)
2.000 ±.080
(50.80 ±2.03)
MS315 15.0
1,000
50 Ω
1 Meg
*
*
*
*
Watt-
age at
+125°C
Watt-
age at
+25°C
0.25
0.50
0.75
0.30
0.45
0.60
0.60
1.2
1.8
1.8
2.4
2.4
3.6
4.8
6.0
7.5
9.0
.040 ±.002
(1.02 ±.05)
.350 ±.040
(8.89 ±1.02)
3.000 ±.090
(76.20 ±2.29)
MS322 22.0
1,000
100 Ω 1.5 Meg
*
13.2
Construction:
The Type MS Power
Film Resistor is constructed
with Micronox® resistance films
bonded to a high strength solid
ceramic core. Nickel alloy end caps
and axial leads complete the assembly.
Encapsulation is provided by a high
temperature silicone conformal coating.
Type MS: Lead material is Nickel Clad Copper
with thin Gold Plate, solderable.
For welding applications, optional pure nickel
leads are available on Models MS126, MS150,
MS151, MS175, MS176, MS210. Contact
Caddock Applications Engineering.
Type MS Power Film Resistors
Page 2 of 2
28_IL108.1004
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