40 Watts, 50 Ω Flanged Resistors Model RFP-40-50RE Flanged Resistors General Specifications Resistive Element: Substrate: Cover: Mounting Flange: Lead(s): Features Thick film Beryllium oxide ceramic Alumina ceramic Copper, nickel plated per QQ-N-290 99.99% pure silver (.005” thk) Electrical Specifications • DC - 3.0 GHz Resistance Value: Frequency Range: Power: Capacitance: • 40 Watts • BeO Ceramic • Welded Silver Leads 50 ohms, ±5% DC - 3.0 GHz 40 Watts 1.4 pF Notes: Tolerance is ±.010, unless otherwise specified. Operating temperature is -55°C to +150°C (see chart). Designed to meet or exceed applicable portions of MIL-E-5400. All dimensions are in inches. Lead length 0.15” minimum. Specifications subject to change without notice. • Non-Nichrome Resistive Element • 100% Tested .130 .062 .400 .100 Outline Drawing .800 .050 TYP. .225 .11 RFP 40-50 RE .130 DIA. THRU. (2 PLACES) .12 .350 .560 VER. 12/5/01 Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121 Sales Desk Europe: Voice: (+44) 23 92 232392 Fax: (+44) 23 92 251369 1 Flanged Resistors Model RFP-40-50RE Typical Performance Suggested Mounting Procedures Power Derating .025 MIN. (2 PLACES) % OF RATED POWER 100 BOARD LOWER THAN LEAD. 75 BOARD EVEN WITH LEAD. SUGGESTED STRESS RELIEF METHODS SCALE: 50 BOARD LOWER THAN LEAD. BOARD HIGHER THAN LEAD. NOT RECOMMENDED APPLICATION SCALE: 1. Make sure that the devices are mounted on flat surfaces (.001” under the device) to optimize the heat transfer. 25 0 25 50 75 100 CASE TEMPERATURE — °C 125 150 2. Drill & tap the heatsink for the appropriate thread size to be used. 3. Coat heatsink with a minimum amount of high quality silicone grease (.001” max. thickness). 4. Position device on mounting surface and secure using socket head screws, flat & split washers. Torque screws to the appropriate value. Make sure that the device is flat against the heatsink. (Care should be taken to avoid upward pressure of the leads towards the lid). 5. Solder leads in place using an SN63 type solder with a controlled temperature iron (210°C). 2 Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121 Sales Desk Europe: Voice: (+44) 23 92 232392 Fax: (+44) 23 92 251369