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Specifications
Resistance:
25kΩ
Power(Watts):
50W
Type:
Wirewound Resistor
Tolerance:
±1%
Temperature Coefficient:
±20ppm/℃
Mfr. Part #:
850F25K
Key Attributes
Model Number:
850F25K
Product Description
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 excellent stability, making them suitable for harsh environmental conditions, vibration, and shock. The metal housing provides chassis mounting capability and acts as a heat sink, ensuring high stability during operation. Non-inductive versions are available for specialized needs.
Product Attributes
- Brand: Ohmite
- Series: 89 Series Metal-Mite
- Housing Material: Anodized Aluminum
- Internal Coating: Silicone
- Core Material: Ceramic
- Terminal Type: Solder-coated axial
- Certifications: RoHS Compliant
- Origin: Not specified
- Color: Not specified
Technical Specifications
| Series | Wattage | Ohmic Value Range | Tolerance | Non-Inductive Option | Temperature Coefficient | Dielectric Withstanding Voltage | Overload Rating |
| 805 | 5W | 0.10-25KΩ | ±1%, ±5% | Yes (Insert 'N' before tolerance code) | <1Ω: ±90 ppm/°C; 1-9.99Ω: ±50 ppm/°C; ≥10Ω: ±20 ppm/°C | 1000 VAC | 5x rated wattage for 5 seconds |
| 810 | 10W | 0.10-50KΩ | ±1%, ±5% | Yes (Insert 'N' before tolerance code) | <1Ω: ±90 ppm/°C; 1-9.99Ω: ±50 ppm/°C; ≥10Ω: ±20 ppm/°C | 1000 VAC | 5x rated wattage for 5 seconds |
| 825 | 25W | 0.010-75KΩ | ±1%, ±5% | Yes (Insert 'N' before tolerance code) | <1Ω: ±90 ppm/°C; 1-9.99Ω: ±50 ppm/°C; ≥10Ω: ±20 ppm/°C | 2250 VAC | 5x rated wattage for 5 seconds |
| 850 | 50W | 0.005-100KΩ | ±1%, ±5% | Yes (Insert 'N' before tolerance code) | <1Ω: ±90 ppm/°C; 1-9.99Ω: ±50 ppm/°C; ≥10Ω: ±20 ppm/°C | 2250 VAC | 5x rated wattage for 5 seconds |
| Characteristic | Specification |
| Derating | Linearly from 100% @ +25°C to 0% @ +275°C |
| Power Rating Basis | Chassis mounting area and temperature stability. Specific chassis/panel dimensions provided for 5W/10W, 25W, and 50W units. |
| Shaded Values | Involve very fine resistance wire; recommend burn-in and/or thermal cycling for critical applications. |
Note: As of September 2006, the 89 Series is no longer offered as Mil. Spec. Dimensions have changed as of August 2015.
2411220655_Ohmite-850F25K_C19620395.pdf
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