Product Overview
The Caddock Type MS Power Film Resistors are high-performance axial-lead resistors designed to simplify circuit design and reduce equipment cost and complexity. These resistors offer a wide resistance range, high power and voltage ratings, and excellent long-term stability, making them suitable for demanding applications. They feature Caddock's patented non-inductive serpentine resistive pattern for efficient flux field cancellation, ensuring fast settling times and minimal distortion in high-frequency circuits. Manufactured under intensive controls and subjected to rigorous reliability testing, Type MS resistors are built for demanding environments.
Product Attributes
- Brand: Caddock Electronics, Inc.
- Resistance Film: Micronox Complex Metal Oxide
- Core Material: High strength solid ceramic
- End Caps: Nickel alloy
- Lead Material: Nickel Clad Copper with thin Gold Plate (solderable); optional pure nickel leads available for welding applications on specific models.
- Encapsulation: High Temperature Silicone Conformal
- Manufacturing Control: Approved for conformance to Mil-I-45208 requirements.
- Reliability Verification: Included in Caddock Reliability Testing Program (Extended Life, Shock, Vibration, Humidity).
- Non-Inductive Design: Patented serpentine pattern.
Technical Specifications
| Model No. | Power Rating (Watts) at +125C | Power Rating (Watts) at +25C | Resistance Min. | Resistance Max. | Max. Voltage (Volts) | C (inches / mm) | B (inches / mm) | A (inches / mm) |
|---|---|---|---|---|---|---|---|---|
| MS126 | 0.25 | 0.50 | 20 | 1 Meg | 500 | .188 .020 (4.78 .51) | .070 .015 (1.78 .38) | .020 .002 (.51 .05) |
| MS150 | 0.30 | 0.60 | 20 | 2 K | 500 | .188 .020 (4.78 .51) | .070 .015 (1.78 .38) | .020 .002 (.51 .05) |
| MS151 | 0.45 | 0.75 | 20 | 2 Meg | 750 | .250 .020 (6.35 .51) | .094 .015 (2.39 .38) | .025 .002 (.64 .05) |
| MS175 | 0.60 | 1.2 | 20 | 2 K | 750 | .313 .020 (7.95 .51) | .094 .015 (2.39 .38) | .025 .002 (.64 .05) |
| MS176 | 0.60 | 1.8 | 45 | 5 Meg | 750 | .313 .020 (7.95 .51) | .094 .015 (2.39 .38) | .025 .002 (.64 .05) |
| MS210 | 1.2 | 2.4 | 45 | 3 K | 750 | .313 .030 (7.95 .76) | .109 .025 (2.77 .64) | .025 .002 (.64 .05) |
| MS214 | 1.8 | 2.4 | 45 | 5 Meg | 750 | .400 .060 (10.16 1.52) | .140 .030 (3.56 .76) | .025 .002 (.64 .05) |
| MS220 | 2.0 | 3.6 | 20 | 10 Meg | 1,000 | .575 .050 (14.61 1.27) | .165 .030 (4.19 .76) | .032 .002 (.81 .05) |
| MS221 | 2.4 | 4.8 | 45 | 10 Meg | 1,000 | .480 .060 (12.19 1.52) | .230 .030 (5.84 .76) | .040 .002 (1.02 .05) |
| MS223 | 2.4 | 6.0 | 20 | 4 Meg | 1,000 | .950 .060 (24.13 1.52) | .230 .030 (5.84 .76) | .040 .002 (1.02 .05) |
| MS244 | 3.6 | 7.5 | 45 | 15 Meg | 1,000 | .570 .060 (14.48 1.52) | .300 .030 (7.62 .76) | .040 .002 (1.02 .05) |
| MS245 | 4.8 | 9.0 | 20 | 6 Meg | 1,000 | .970 .060 (24.64 1.52) | .300 .030 (7.62 .76) | .040 .002 (1.02 .05) |
| MS260 | 6.0 | 13.2 | 45 | 15 Meg | 1,000 | .910 .060 (23.11 1.52) | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
| MS281 | 7.5 | * | 45 | 8 Meg | 1,000 | 1.250 .070 (31.75 1.78) | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
| MS310 | 9.0 | * | 45 | 20 Meg | 1,000 | 2.000 .080 (50.80 2.03) | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
| MS313 | 12.5 | * | 50 | 30 Meg | 1,000 | 2.000 .080 (50.80 2.03) | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
| MS315 | 15.0 | * | 50 | 1 Meg | 1,000 | 3.000 .090 (76.20 2.29) | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
| MS322 | 22.0 | * | 100 | 1.5 Meg | 1,000 | * | .350 .040 (8.89 1.02) | .040 .002 (1.02 .05) |
Key Specifications:
- Resistance Tolerance: 1% (tolerances to 0.1% on special order)
- Temperature Coefficient: 50 ppm/C (referenced to +25C)
- Insulation Resistance: 10,000 Megohms, min.
- Overload/Overvoltage: 5 times rated power for 5 seconds (R 0.5% max. or 0.5 ohm max.)
- Thermal Shock: Mil-Std-202, Method 107, Cond. C (R 0.5% max. or 0.5 ohm max.)
- Moisture Resistance: Mil-Std-202, Method 106 (R 0.5% max. or 0.5 ohm max.)
- Load Life: 1,000 hours at rated power (R 0.5% max. or 0.5 ohm max.)
- Maximum Operating Temperature: +275C
* Limited by power rating.
2411181757_Caddock-MS220-100-1-_C20483333.pdf
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