© 2003-2021 Caddock Electronics, Inc.

28_IL108.0321

Sales and Applications Engineering

17271 North Umpqua Hwy.

Roseburg, Oregon 97470-9422

Phone: (541) 496-0700

email: caddock@caddock.com

website: caddock.com

For Caddock Distributors listed by country see caddock.com/contact/dist.html

ELECTRONICS, INC.

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, ΔR 0.5% max. or 0.5 ohm max., whichever is

greater. Mounting method per Mil-R-39007, para. 4.7.2

"conditioning".

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

Models with low inductance construction are in shaded areas.

MS220 -100K - 1%

Model Number:

Resistor Value:

Tolerance

Type MS Power Film Resistors

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

FilmResistoris constructed

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.

Page 2 of 2

Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.