Product Overview
The 89 Series Metal-Mite is a high-performance, aluminum-housed axial terminal wirewound resistor designed for demanding applications. These resistors offer a high power-to-size ratio and feature a metal housing that allows for chassis mounting and provides excellent heat-sinking capabilities, ensuring high stability during operation. They are well-suited to withstanding vibration, shock, and harsh environmental conditions.
Product Attributes
- Brand: Ohmite
- Series: 89 Series Metal-Mite
- Housing Material: Anodized aluminum
- Internal Coating: Silicone
- Core Material: Ceramic
- Terminals: Solder-coated axial
- Certifications: RoHS Compliant (as of September 2006, no longer offered as Mil. Spec.)
Technical Specifications
| Series | Wattage | Ohmic Value Range | Tolerance | Non-Inductive Option | Temperature Coefficient | Dielectric Withstanding Voltage | Overload Rating |
| 805 | 5W | 0.10-25K ℆ | ±1%, ±5% | Insert "N" before tolerance code (e.g., 805NF560) | Under 1℆: ±90 ppm/°C
1 to 9.99℆: ±50 ppm/°C
10℆ and over: ±20 ppm/°C | 1000 VAC | 5 times rated wattage for 5 seconds |
| 810 | 10W | 0.10-50K ℆ | ±1%, ±5% | Insert "N" before tolerance code | Under 1℆: ±90 ppm/°C
1 to 9.99℆: ±50 ppm/°C
10℆ and over: ±20 ppm/°C | 1000 VAC | 5 times rated wattage for 5 seconds |
| 825 | 25W | 0.010-75K ℆ | ±1%, ±5% | Insert "N" before tolerance code | Under 1℆: ±90 ppm/°C
1 to 9.99℆: ±50 ppm/°C
10℆ and over: ±20 ppm/°C | 2250 VAC | 5 times rated wattage for 5 seconds |
| 850 | 50W | 0.005-100K ℆ | ±1%, ±5% | Insert "N" before tolerance code | Under 1℆: ±90 ppm/°C
1 to 9.99℆: ±50 ppm/°C
10℆ and over: ±20 ppm/°C | 2250 VAC | 5 times rated wattage for 5 seconds |
Ordering Information
Part Number Structure: 8XX[N]F/J-Ohmic Value
Series: 805 (5W), 810 (10W), 825 (25W), 850 (50W)
Non-Inductive Winding: Optional (blank = standard winding, N = Non-Inductive)
Tolerance: F = 1%, J = 5%
Ohmic Value Suffix: e.g., R005 (0.005℆), R10 (0.1℆), 1R0 (1.0℆), 250 (250℆), 1K0 (1,000℆), 1K5 (1,500℆), 25K (25,000℆)
Example: 805NF5R0E (805 Series, Non-Inductive, 5W, 5.0℆, 1% Tolerance)
2411220655_Ohmite-825F500_C19565338.pdf
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High stability Ohmite 825F500 axial terminal resistor with ceramic core and silicone internal coating Images
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