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Metal-Mite®Aluminum Housed Axial Lead Wirewound Resistors The 89 Series are high-performance axial-lead type resistors. These molded-construction metal-housed resistors are available in higher power ratings than standard axial-lead resistors and are better suited to withstanding vibration, shock and harsh environmental conditions. The 89 Series Metal-Mite® resistors are aluminum housed to maintain high stability during operation and to permit secure mounting to chassis surfaces. The metal housing also provides heat-sinking capabilities, allowing the units to exceed the power ratings set by MIL specifications. * High Stability: ±0.5% delta-R. * Metal housing allows chassis mounting and provides heat sink capability. * Housing: Metal, anodized aluminum. * Internal Coating: Silicone. * Terminals: Solder-coated axial lead. * Derating: Linearly from 100% @ +25°C to 0% @ +275°C. * Tolerance: ±1% and ±5% (other tolerances available). * Power rating: Rating is based on chassis mounting area and temperature stability. Proper heat sink as follows: 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. * Maximum ohmic values: See chart. * Overload: 5 times rated wattage for 5 seconds. * Temperature coefficient: Under 1 ohm: ±90 ppm/°C; 1 to 9.99 ohms: ±50 ppm/°C; 10 ohms and over: ±20 ppm/°C. * Dielectric withstanding voltage: 5W and 10W rating,1000 VAC; 25 and 50W ratings, 2250 VAC. (all content is the responsibility of the poster) |
jessica.webb@oklahomaselltoday.com (Jessica Webb) for more information. All emails will be forwarded to the poster's actual email address.