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Specifications
Resistance:
40Ω
Power(Watts):
5W
Type:
Wirewound Resistor
Tolerance:
±1%
Temperature Coefficient:
±20ppm/℃
Mfr. Part #:
805F40R
Key Attributes
Model Number:
805F40R
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, excellent stability (0.5% R), and robust construction suitable for vibration, shock, and harsh environmental conditions. The metal housing allows for chassis mounting, providing effective heat-sinking capabilities and maintaining high stability during operation.
Product Attributes
- Brand: Ohmite
- Series: 89 Series Metal-Mite
- Housing Material: Metal, anodized aluminum
- Internal Coating: Silicone
- Core Material: Ceramic
- Terminals: Solder-coated axial
- Certifications: RoHS Compliant (as of Sept 2006, no longer Mil. Spec.)
Technical Specifications
| Series | Wattage | Ohmic Range | Tolerance | Non-Inductive Available | Derating | Temperature Coefficient | Dielectric Withstanding Voltage |
| 805 | 5W | 0.10-25K | 1%, 5% | Yes (Insert 'N' before tolerance code) | Linearly from 100% @ +25C to 0% @ +275C | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 1000 VAC |
| 810 | 10W | 0.10-50K | 1%, 5% | Yes (Insert 'N' before tolerance code) | Linearly from 100% @ +25C to 0% @ +275C | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 1000 VAC |
| 825 | 25W | 0.010-75K | 1%, 5% | Yes (Insert 'N' before tolerance code) | Linearly from 100% @ +25C to 0% @ +275C | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 2250 VAC |
| 850 | 50W | 0.005-100K | 1%, 5% | Yes (Insert 'N' before tolerance code) | Linearly from 100% @ +25C to 0% @ +275C | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10+: 20 ppm/C | 2250 VAC |
| Characteristic | Specification |
| Power Rating Basis | Based on chassis mounting area and temperature stability. Specific chassis sizes required for each wattage. |
| Overload | 5 times rated wattage for 5 seconds. |
| Series | Dimensions (in./mm) - Body Length (A) x Diameter (B) | Lead Diameter () |
| 805 | 0.65" / 16.5 x 1.18" / 30.0 | 0.09" / 2.4 |
| 810 | 0.83" / 21.0 x 1.44" / 36.5 | 0.11" / 2.8 |
| 825 | 1.10" / 28.0 x 2.01" / 51.0 | 0.20" / 5.2 |
| 850 | 1.10" / 28.0 x 2.85" / 72.5 | 0.20" / 5.2 |
2411220655_Ohmite-805F40R_C19612680.pdf
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