Product Overview
The Caddock Type MS Power Film Resistors are axial-lead resistors designed for high-performance applications, offering a wide resistance range and a maximum operating temperature of +275C. These resistors deliver full power and voltage ratings without derating, providing non-inductive performance and extending the critical resistance value. They are constructed with Caddock's proprietary Micronox resistance films, fired onto a ceramic core at high temperatures for outstanding stability under demanding conditions. The patented serpentine pattern ensures efficient non-inductive construction, leading to faster settling times and minimal distortion in high-frequency circuits. Manufactured under intensive controls and rigorous quality assurance, Type MS resistors are suitable for applications requiring high reliability and precise performance.
Product Attributes
- Brand: Caddock Electronics, Inc.
- Product Family: Type MS Power Film Resistors
- Resistance Film Material: Micronox (complex metal oxide)
- Core Material: High strength solid ceramic
- Encapsulation: High Temperature Silicone Conformal
- Lead Material: Nickel Clad Copper with thin Gold Plate (solderable); optional pure nickel leads available for welding applications on specific models.
- Manufacturing Standard Conformance: Approved for conformance to Mil-I-45208 in many recent surveys.
- Reliability Testing: Included in Caddock Reliability Testing Program (Extended Life, Shock, Vibration, Humidity).
Technical Specifications
| Model No. | Rated Power (Watts at +125C) | Rated Power (Watts at +25C) | Max. Voltage (Volts) | Resistance Min. () | Resistance Max. () | Dimensions (in) | Dimensions (mm) | C (in) | C (mm) |
|---|---|---|---|---|---|---|---|---|---|
| MS126 | 0.25 | 0.50 | 500 | 20 | 1 Meg | .070 .015 | (1.78 .38) | .188 .020 | (4.78 .51) |
| MS150 | 0.30 | 0.50 | 500 | 20 | 2 K | .070 .015 | (1.78 .38) | .188 .020 | (4.78 .51) |
| MS151 | 0.45 | 0.50 | 750 | 20 | 2 Meg | .094 .015 | (2.39 .38) | .250 .020 | (6.35 .51) |
| MS175 | 0.60 | 0.75 | 750 | 20 | 2 K | .094 .015 | (2.39 .38) | .250 .020 | (6.35 .51) |
| MS176 | 0.60 | 0.75 | 750 | 45 | 5 Meg | .094 .015 | (2.39 .38) | .313 .020 | (7.95 .51) |
| MS210 | 1.2 | 1.0 | 750 | 45 | 3 K | .109 .025 | (2.77 .64) | .313 .030 | (7.95 .76) |
| MS214 | 1.8 | 1.0 | 750 | 45 | 5 Meg | .140 .030 | (3.56 .76) | .400 .060 | (10.16 1.52) |
| MS220 | 1.8 | 2.0 | 800 | 20 | 10 Meg | .165 .030 | (4.19 .76) | .575 .050 | (14.61 1.27) |
| MS221 | 2.4 | 3.0 | 800 | 45 | 10 Meg | .230 .030 | (5.84 .76) | .480 .060 | (12.19 1.52) |
| MS223 | 2.4 | 3.0 | 1,000 | 20 | 4 Meg | .230 .030 | (5.84 .76) | .950 .060 | (24.13 1.52) |
| MS244 | 3.6 | 4.0 | 1,000 | 45 | 15 Meg | .300 .030 | (7.62 .76) | .570 .060 | (14.48 1.52) |
| MS245 | 4.8 | 4.0 | 1,000 | 20 | 6 Meg | .300 .030 | (7.62 .76) | .970 .060 | (24.64 1.52) |
| MS260 | 6.0 | 6.0 | 1,000 | 45 | 15 Meg | .350 .040 | (8.89 1.02) | .910 .060 | (23.11 1.52) |
| MS281 | 7.5 | 8.0 | 1,000 | 45 | 8 Meg | .350 .040 | (8.89 1.02) | 1.250 .070 | (31.75 1.78) |
| MS310 | 9.0 | 10.0 | 1,000 | 45 | 20 Meg | .350 .040 | (8.89 1.02) | 2.000 .080 | (50.80 2.03) |
| MS313 | 12.5 | 12.5 | 1,000 | 50 | 30 Meg | .350 .040 | (8.89 1.02) | 2.000 .080 | (50.80 2.03) |
| MS315 | 15.0 | 15.0 | 1,000 | 50 | 1 Meg | .350 .040 | (8.89 1.02) | 3.000 .090 | (76.20 2.29) |
| MS322 | * | 22.0 | 1,000 | 100 | 1.5 Meg | .350 .040 | (8.89 1.02) | 3.000 .090 | (76.20 2.29) |
* Limited by power rating.
General Specifications:
- Resistance Tolerance: 1% (tolerances to 0.1% on special order)
- Temperature Coefficient: 50 ppm/C (referenced to +25C, R taken at -15C and +105C)
- Insulation Resistance: 10,000 Megohms, min.
- Overload/Overvoltage: 5 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds. R 0.5% max. or 0.5 ohm max., whichever is greater.
- Thermal Shock: Mil-Std-202, Method 107, Cond. C, R 0.5% max. or 0.5 ohm max., whichever is greater.
- Moisture Resistance: Mil-Std-202, Method 106, R 0.5% max. or 0.5 ohm max., whichever is greater.
- Load Life: 1,000 hours at rated power at +25C or +125C (see derating curve), not to exceed rated voltage, R 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: +275C
Derating Curve:
Ordering Information Example: MS220 -100K - 1% (Model Number - Resistor Value - Tolerance)
Note: Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas of the catalog page. Certain products shown may be covered by one or more patents; patents are also pending.
2411181757_Caddock-MS244-100K-1-_C20483400.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
