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Type MS Power Film Resistors
Page 2 of 2
MS 126, MS150
MS 151, MS175
MS 176, MS210
MS 214
MS 220
MS 221
MS 223
MS 244
MS 245
MS 260
MS 281
MS 310
Construction:
The Type MS Power
Film Resistor is constructed
with Micronox ? resistance ? lms
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.
Speci? cations:
Max.
Model
Dielect.
age at Voltage Strength
age at
+25 ° C +125 ° C
Resistance Tolerance:
±1% (tolerances to 0.1% on
0.25
MS 126
0.25
200
500
20 ?
1 Meg
special order).
*
Temperature Coef? cient:
50 ppm/°C. TC referenced
0.30
MS 150
0.50
500
20 ?
2 K
to +25°C, Δ R taken at -15°C and +105°C.
0.50
MS 151
0.50
300
750
20 ?
2 Meg
Insulation Resistance: 10,000 Megohms, min.
*
0.45
MS 175
0.75
750
20 ?
2 K
Overload/Overvoltage: 5 times rated power with applied
0.75
500
MS 176
0.75
750
45 ?
5 Meg
voltage not to exceed 1.5 times maximum continuous oper-
*
0.60
1.0
750
45 ?
3 K
MS 210
ating voltage for 5 seconds. Δ R 0.5% max. or 0.5 ohm
0.60
500
MS 214
1.0
750
45 ?
5 Meg
max., whichever is greater.
1.2
1,000
MS 220
2.0
800
20 ?
10 Meg
Thermal Shock: Mil-Std-202, Method 107, Cond. C, Δ R
0.5% max. or 0.5 ohm max., whichever is greater.
1.8
1,000
MS 221
3.0
800
45 ?
10 Meg
Moisture Resistance: Mil-Std-202, Method 106, Δ R 0.5%
1.8
800
MS 223
3.0
1,000
20 ?
4 Meg
max. or 0.5 ohm max., whichever is greater.
2.4
2,000
MS 244
4.0
1,000
45 ?
15 Meg
Load Life:
1,000 hours at rated power at +25°C or
2.4
800
MS 245
4.0
1,000
20 ?
6 Meg
+125°C (see derating curve), not to exceed rated voltage,
3.6
2,000
MS 260
6.0
1,000
45 ?
15 Meg
Δ R 0.5% max. or 0.5 ohm max., whichever is greater.
4.8
2,000
MS 281
8.0
1,000
45 ?
8 Meg
Maximum Operating Temperature: +275°C.
6.0
4,500
MS 310
10.0
1,000
45 ?
20 Meg
Encapsulation: High Temperature Silicone Conformal.
MS 313
12.5
7.5
6,000
1,000
50 ?
30 Meg
B
*
2.000 ± .080 .350 ± .040 .040 ± .002 1.500 ± .125 A C
MS 315 15.0 9.0 1,000 50 ? 1 Meg
*
MS 322
22.0
13.2
1,000
100 ?
1.5 Meg
* Limited Models with low inductance construction are in shaded areas.
Derating Curve:
A - all MS models
Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.
except MS 126,
B
Ordering Information :
MS 151, MS 176
RATED POWER OR
MS220 -100K - 1%
Model Number:
Tolerance
Resistor Value:
CAD DOC K
MS 313, MS315
MS 322
Watt- Watt- Resistance Dimensions in inches and (millimeters)
No. Min. Max. A B C
.188 ± .020 .070 ± .015 .020 ± .002
(4.78 ± .51) (1.78 ± .38) (.51 ± .05)
.188 ± .020 .070 ± .015 .020 ± .002
(4.78 ± .51) (1.78 ± .38) (.51 ± .05)
.250 ± .020 .094 ± .015 .025 ± .002
(6.35 ± .51) (2.39 ± .38) (.64 ± .05)
.250 ± .020 .094 ± .015 .025 ± .002
(6.35 ± .51) (2.39 ± .38) (.64 ± .05)
.313 ± .020 .094 ± .015 .025 ± .002
(7.95 ± .51) (2.39 ± .38) (.64 ± .05)
.313 ± .020 .094 ± .015 .025 ± .002
(7.95 ± .51) (2.39 ± .38) (.64 ± .05)
.313 ± .030 .109 ± .025 .025 ± .002
(7.95 ± .76) (2.77 ± .64) (.64 ± .05)
.400 ± .060 .140 ± .030 .025 ± .002
(10.16 ± 1.52) (3.56 ± .76) (.64 ± .05)
.575 ± .050 .165 ± .030 .032 ± .002
(14.61 ± 1.27) (4.19 ± .76) (.81 ± .05)
.480 ± .060 .230 ± .030 .040 ± .002
(12.19 ± 1.52) (5.84 ± .76) (1.02 ± .05)
.950 ± .060 .230 ± .030 .040 ± .002
(24.13 ± 1.52) (5.84 ± .76) (1.02 ± .05)
.570 ± .060 .300 ± .030 .040 ± .002
(14.48 ± 1.52) (7.62 ± .76) (1.02 ± .05)
.970 ± .060 .300 ± .030 .040 ± .002
(24.64 ± 1.52) (7.62 ± .76) (1.02 ± .05)
.910 ± .060 .350 ± .040 .040 ± .002
(23.11 ± 1.52) (8.89 ± 1.02) (1.02 ± .05)
1.250 ± .070 .350 ± .040 .040 ± .002
(31.75 ± 1.78) (8.89 ± 1.02) (1.02 ± .05)
2.000 ± .080 .350 ± .040 .040 ± .002
(50.80 ± 2.03) (8.89 ± 1.02) (1.02 ± .05)
(50.80 ± 2.03) (8.89 ± 1.02) (1.02 ± .05) (38.10 ± 3.18)
3.000 ± .090 .350 ± .040 .040 ± .002
(76.20 ± 2.29) (8.89 ± 1.02) (1.02 ± .05)
by power rating . DIMENSIONS IN INCHES AND (MILLIMETERS)
100
80
60 A
RATED VOLTAGE, % 40
20 B - MS 126, MS151,
0 MS 176
25 75 125 175 225 275
AMBIENT TEMPERATURE, ° C
Applications Engineering Sales and Cor po rate Of? ce
17271 North Umpqua Hwy. 1717 Chicago Av e nue
Roseburg, Oregon 97470-9422 Riverside, California 92507-2364
Phone: (541) 496-0700 e-mail: caddock@caddock.com ? web: www.caddock.com Phone: (951) 788-1700
F ax:  (541) 496-0408                  For Caddock Distributors listed by country see caddock.com/contact/dist.html                   Fax: (951) 369-1151
? 2004 Caddock Electronics, Inc.
28_IL108.1004
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