Ohmite 89 Series Metal-Mite Aluminum Housed Axial Terminal Wirewound Resistors
The 89 Series Metal-Mite resistors are high-performance, molded-construction, metal-housed wirewound resistors designed for demanding applications. Their aluminum housing provides excellent heat-sinking capabilities, allowing for chassis mounting and improved thermal management, leading to high stability (0.5% R). These resistors offer a high power-to-size ratio and are well-suited for withstanding vibration, shock, and harsh environmental conditions. They are ideal for applications requiring reliable performance and durability.
Product Attributes
- Brand: Ohmite
- Series: 89 Series Metal-Mite
- Housing Material: Anodized aluminum
- Internal Coating: Silicone
- Core Material: Ceramic
- Terminals: Solder-coated axial
- RoHS Compliant: Yes (as of September 2006)
- Non-Inductive versions available
Technical Specifications
| Series | Wattage | Resistance Range (Ohms) | Tolerance | Max Voltage (VAC) | Temperature Coefficient |
|---|---|---|---|---|---|
| 805 | 5W | 0.10-25K | 1%, 5% | 1000 | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10: 20 ppm/C |
| 810 | 10W | 0.10-50K | 1%, 5% | 1000 | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10: 20 ppm/C |
| 825 | 25W | 0.010-75K | 1%, 5% | 2250 | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10: 20 ppm/C |
| 850 | 50W | 0.005-100K | 1%, 5% | 2250 | <1: 90 ppm/C; 1-9.99: 50 ppm/C; 10: 20 ppm/C |
Derating and Overload
Derating: Linearly from 100% @ +25C to 0% @ +275C.
Overload: 5 times rated wattage for 5 seconds.
Chassis Mounting Requirements
- 5W and 10W units: 4 x 6 x 2 x .040 Aluminum chassis
- 25W units: 5 x 7 x 2 x .040 Aluminum chassis
- 50W units: 12 x 12 x .059 Aluminum panel
Ordering Information Example
805NF5R0E: Series 805 (5 Watt), Non-Inductive (N), Tolerance 1% (F), Ohmic value 5.0 Ohm (5R0), RoHS Compliant (E).
Note: As of September 2006, the 89 Series is no longer offered as Mil. Spec. Dimensions have changed as of August 2015.
2411220655_Ohmite-825F100_C19565808.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
