89SERIES OHMITE | Alldatasheet
Document overview
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Technical content
Features
- High Stability: ±0.5% ∆R
- High power to size ratio
- Metal housing allows chassis mounting and pro- vides heat sink capability 89 series Metal-Mite® Aluminum Housed Axial Terminal Wirewound, 1% Tolerance Series Wattage Ohms Voltage 805 5 0.10-25K 210 810 10 0.10-50K 320 825 25 0.010-75K 520 850 50 0.005-100K 1170 Non-Inductive versions available. Insert “N” before tolerance code. Example: 850NF560 The 89 Series is a high-performance axial type resistor. These molded-construction metal-housed resistors are available in higher power ratings than standard axial resistors and are better suited to with- standing 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. Housing Metal, anodized aluminum Internal Coating Silicone Core Ceramic Terminals Solder-coated axial 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 1Ω: ±90 ppm/°C; 1 to 9.99Ω: ±50 ppm/°C; 10Ω and over: ±20 ppm/°C. Dielectric withstanding voltage 5W and 10W rating,1000 VAC; 25 and 50W ratings, 2250 VAC. CharaCteristiCs series speCiFiCations (continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 129 50,000 –––50K 75,000 –––75K 100,000 –––100K = Standard values = Non-standard values subject to minimum handling charge per item Shaded values involve very fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling. Ohmic value 805F––– 5 810F––– 10 825F––– 25 850F––– 50 Wattage Part No. Prefix Suffix Ohmic value 805F––– 5 810F––– 10 825F––– 25 850F––– 50 Wattage Part No. Prefix Suffix Ohmic value 805F––– 5 810F––– 10 825F––– 25 850F––– 50 Wattage Part No. Prefix Suffix 805 N F5R0E Series 805 = 5 Watt 810 = 10 watt 825 = 25 watt 850 = 50 watt Ohms R005= 0.005Ω R10= 0.1Ω 1R0= 1.0Ω 250 = 250Ω 1K0= 1,000Ω 1K5= 1,500Ω 25K = 25,000Ω RoHS Compliant Tolerance F = 1% J = 5% Non-Inductive Winding Optional (blank = std. winding) As of September 2006, the 89 Series is no longer offered as Mil. Spec. Dimensions have changed as of August 2015 Dimensions (in./mm) 89 series Metal-Mite® Aluminum Housed Axial Terminal Wirewound, 1% Tolerance
orDerinG inFormation
F B E AG JL D H K C 810, 825, 850805 Ø 2.0 ±.25 2.1 ±.1 Ø 1.27 ±.13 A 2.16 min. G 16AWG min. F D C H B K E L J A B C D E F G H J K L