89 Series Metal-Mite Aluminum Housed Axial Terminal Wirewound Resistors
The 89 Series Metal-Mite resistors are high-performance, molded-construction, metal-housed axial resistors designed for demanding applications. They offer a high power-to-size ratio and are well-suited for withstanding vibration, shock, and harsh environmental conditions. The aluminum housing provides excellent heat-sinking capabilities, allowing for chassis mounting and maintaining high stability during operation. These resistors are ideal for applications requiring robust performance and reliability.
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 Sept 2006, no longer offered as Mil. Spec.)
Technical Specifications
| Series | Wattage | Tolerance | Resistance Range (Ohms) | Non-Inductive Option | Temperature Coefficient | Dielectric Withstanding Voltage |
| 805 | 5W | 1%, 5% | 0.10 - 25K | Yes (Insert 'N' before tolerance code, e.g., 850NF560) | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 1000 VAC |
| 810 | 10W | 1%, 5% | 0.10 - 50K | Yes | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 1000 VAC |
| 825 | 25W | 1%, 5% | 0.010 - 75K | Yes | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 2250 VAC |
| 850 | 50W | 1%, 5% | 0.005 - 100K | Yes | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 2250 VAC |
Key Features & Performance
| Feature | Specification |
| High Stability | 0.5% R |
| Power to Size Ratio | High |
| Housing Capability | Chassis mounting and heat sink |
| Derating | Linearly from 100% @ +25C to 0% @ +275C |
| Overload Rating | 5 times rated wattage for 5 seconds |
| Power Rating Basis | Chassis mounting area and temperature stability (specific chassis requirements provided) |
2411220655_Ohmite-810F10R_C19585835.pdf
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