Product Overview
The Caddock Type MS Power Film Resistors are designed for high-performance applications, offering a wide resistance range and a maximum operating temperature of +275C. These axial-lead resistors deliver power ratings up to 22 Watts and voltage ratings as high as 6,000 volts, with values extending to 30 Megohms. Key features include full power and voltage ratings without derating, non-inductive performance, and excellent long-term stability of 0.05% per 1,000 hours. Constructed with Caddock's proprietary Micronox complex metal oxide resistance films fired onto a ceramic core, and utilizing a patented non-inductive serpentine resistive pattern, these resistors ensure fast settling times and minimal distortion in high-frequency circuits. They are manufactured under intensive controls, including power conditioning, overvoltage conditioning, and maximum temperature conditioning, and are included in the Caddock Reliability Testing Program, with conformance verified periodically.
Product Attributes
- Brand: Caddock Electronics, Inc.
- Product Family: Type MS Power Film Resistors
- Resistance Film: Micronox complex metal oxide
- Core Material: 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 Control: Approved for conformance to Mil-I-45208 requirements.
- Reliability Testing: Included in Caddock Reliability Testing Program (Extended Life, Shock, Vibration, Humidity).
Technical Specifications
| Model No. | Power Rating (Watts) at +125C | Power Rating (Watts) at +25C | Resistance Range () Min. | Resistance Range () Max. | Max. Voltage (V) | Dimensions B (inches .015) | Dimensions C (inches .020) | Dimensions A (inches .002) |
|---|---|---|---|---|---|---|---|---|
| MS126 | 0.25 | 0.50 | 20 | 1 Meg | 500 | .070 (1.78) | .188 (4.78) | .020 (.51) |
| MS150 | 0.30 | 0.60 | 20 | 2 K | 500 | .070 (1.78) | .188 (4.78) | .020 (.51) |
| MS151 | 0.45 | 0.90 | 20 | 2 Meg | 750 | .094 (2.39) | .250 (6.35) | .025 (.64) |
| MS175 | 0.60 | 1.2 | 20 | 2 K | 750 | .094 (2.39) | .250 (6.35) | .025 (.64) |
| MS176 | 0.60 | 1.2 | 45 | 5 Meg | 750 | .094 (2.39) | .313 (7.95) | .025 (.64) |
| MS210 | 0.60 | 1.2 | 45 | 3 K | 750 | .109 (2.77) | .313 (7.95) | .025 (.64) |
| MS214 | 1.8 | 2.4 | 45 | 5 Meg | 750 | .140 (3.56) | .400 (10.16) | .025 (.64) |
| MS220 | 1.8 | 2.4 | 20 | 10 Meg | 1,000 | .165 (4.19) | .575 (14.61) | .032 (.81) |
| MS221 | 2.4 | 3.6 | 45 | 10 Meg | 1,000 | .230 (5.84) | .480 (12.19) | .040 (1.02) |
| MS223 | 2.4 | 3.6 | 20 | 4 Meg | 1,000 | .230 (5.84) | .950 (24.13) | .040 (1.02) |
| MS244 | 4.8 | 6.0 | 45 | 15 Meg | 1,000 | .300 (7.62) | .570 (14.48) | .040 (1.02) |
| MS245 | 4.8 | 6.0 | 20 | 6 Meg | 1,000 | .300 (7.62) | .970 (24.64) | .040 (1.02) |
| MS260 | 7.5 | 9.0 | 45 | 15 Meg | 1,000 | .350 (8.89) | .910 (23.11) | .040 (1.02) |
| MS281 | 9.0 | 13.2 | 45 | 8 Meg | 1,000 | .350 (8.89) | 1.250 (31.75) | .040 (1.02) |
| MS310 | 10.0 | * | 45 | 20 Meg | 1,000 | .350 (8.89) | 2.000 (50.80) | .040 (1.02) |
| MS313 | 12.5 | * | 50 | 30 Meg | 1,000 | .350 (8.89) | 2.000 (50.80) | .040 (1.02) |
| MS315 | 15.0 | * | 50 | 1 Meg | 1,000 | .350 (8.89) | 3.000 (76.20) | .040 (1.02) |
| MS322 | 22.0 | * | 100 | 1.5 Meg | 1,000 | .350 (8.89) | * | .040 (1.02) |
* 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.
- Maximum Operating Temperature: +275C
- Dielectric Strength: Varies by model (see table)
Ordering Information Example: MS220 -100K - 1% (Model Number - Resistor Value - Tolerance)
Note: Models with Caddock's Non-Inductive Resistance Pattern are indicated in non-shaded areas of the model table. Models with low inductance construction are in shaded areas.
2411041705_Caddock-MS220-10-0M-1-_C20481852.pdf
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