Pomona® FEATURES: • Use to add series resistance to coaxial lines with BNC connectors MATERIALS: Body and Fittings: Brass, Alloy 360, ½ Hard Center Contact: Male – Brass, Alloy 360, ½ Hard Female – Beryllium Copper per ASTM B196 and B197 Cond. HT Outer Contact: Beryllium Copper, per ASTM B196 and B197 Cond. HT. Dielectric: Teflon per ASTM D1457 Gasket/Seals: Silicone rubber per ZZ-R-765, Class 11, Grade 50 Model 4391 BNC Resistor Attenuator Resistor: Non-inductive film resistor Finish: Body and Fittings: Tarnish resistant Center Contact: Male – Gold plated Outer Contact: Tarnish resistant Marking: “Pomona 4391-50 2W” “50 Ohm Attenuator” RATINGS: Operating Temperature: +102° C (+216° F) Max. Frequency Range: DC to 500 MHz Resistance Tolerance +1% Power: 2W @ 25° C. Max ORDERING INFORMATION: Model 4391 See table above. All dimensions are in inches. Tolerances (except noted): .xx = ±.02” (,51 mm), .xxx = ± .005” (,127 mm). All specifications are to the latest revisions. Specifications are subject to change without notice. Registered trademarks are the property of their respective companies. Made in USA 6/9/99 SY/EH/LS Sales: 800-490-2361 Fax: 888-403-3360 Technical Assistance: 800-241-2060 S:\Engineering \Release\DataSheets\FlukeDataSheet\d4391_1_01.doc PomonaACCESS 90262 (800) 444-6785 or (425) 446-6010 More drawings available at www.pomonaelectronics.com Page 1 of 1