{"id":4366,"date":"2024-02-20T01:45:11","date_gmt":"2024-02-20T01:45:11","guid":{"rendered":"https:\/\/mechanc.com\/?post_type=product&p=4366"},"modified":"2026-08-11T14:54:42","modified_gmt":"2026-08-11T14:54:42","slug":"1-85mm-female-4-hole-flange-rf-connector-0-30mm-pin-diameter-1-85-kfd4","status":"publish","type":"product","link":"https:\/\/mechanc.com\/ru\/product\/1-85mm-female-4-hole-flange-rf-connector-0-30mm-pin-diameter-1-85-kfd4\/","title":{"rendered":"\u0412\u0427-\u0440\u0430\u0437\u044a\u0451\u043c 1,85 \u043c\u043c, \u0433\u043d\u0435\u0437\u0434\u043e, \u0444\u043b\u0430\u043d\u0435\u0446 \u0441 4 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u044f\u043c\u0438 \u2014 \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0439 \u043d\u0430 \u043c\u0435\u0441\u0442\u0435, \u0448\u0430\u0433 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u0439 6,35 \u043c\u043c, \u0434\u0438\u0430\u043c\u0435\u0442\u0440 \u0448\u0442\u044b\u0440\u044f 0,30 \u043c\u043c"},"content":{"rendered":"

1.85mm Female 4-Hole Flange Mount RF Connector \u2013 Field Replaceable, Model 1.85-KFD4<\/h2>\n

The 1.85 mm female 4-hole flange mount RF connector<\/strong> with 6.35 mm hole spacing<\/strong> and a 0.30 mm pin diameter<\/strong> is designed for precision signal transmission in high-frequency instrumentation. Operating from DC to 67 GHz<\/strong> at 50 \u03a9 impedance<\/strong>, the 1.85-KFD4 provides stable electrical characteristics and superior repeatability in advanced microwave measurement systems. Explore the full RF connector range<\/a> from Mechanc.<\/p>\n

High-Frequency Electrical Stability<\/h3>\n

The 1.85-KFD4 RF connector<\/strong> achieves VSWR \u2264 1.2<\/strong> and insertion loss \u2264 0.06 \u221aF(GHz) dB<\/strong>, ensuring minimal reflection and low signal degradation across the broadband spectrum. Its precision-machined 1.85 mm interface supports excellent phase stability and impedance uniformity for analyzers, frequency-extension heads, and metrology-grade calibration modules. Learn more about Mechanc\u2019s 1.85 mm connectors<\/a>.<\/p>\n

Material Selection and Conductive Reliability<\/h3>\n

Constructed from passivated stainless steel<\/strong> with gold-plated beryllium copper contacts<\/strong>, the 1.85-KFD4 connector<\/strong> combines structural robustness with high conductivity. Controlled surface finishing ensures low contact resistance and long-term durability through thousands of connection cycles. Every unit is fully RoHS<\/strong> and REACH<\/strong> compliant. View our field-replaceable connectors<\/a> for similar modular designs.<\/p>\n

Flange Geometry and Installation Precision<\/h3>\n

The 4-hole flange mount design<\/a> with 6.35 mm spacing<\/strong> delivers excellent mechanical balance and reference-plane consistency. Its compact geometry allows secure attachment on analyzer ports or panel interfaces, maintaining alignment accuracy under vibration and thermal stress during repetitive measurements.<\/p>\n

Applications and Engineering Flexibility<\/h3>\n

The 1.85-KFD4 4-hole flange mount RF connector<\/strong> is used in broadband calibration systems, modular analyzers, and high-frequency instrumentation requiring repeatable, low-loss interfaces. Mechanc offers customizable configurations including flange dimension changes, alternative plating finishes, and non-magnetic alloys to meet specific design requirements.<\/p>\n

For the corresponding male interface, see the mirror part: 1.85 mm Male 4-Hole Flange RF Connector \u2013 0.30 mm Pin Diameter, Model 1.85-JFD4<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

1.85mm Female 4-Hole Flange Mount RF Connector \u2013 Field Replaceable, Model 1.85-KFD4 The 1.85 mm female 4-hole flange mount RF connector with 6.35 mm hole spacing and a 0.30 mm pin diameter is designed for precision signal transmission in high-frequency instrumentation. Operating from DC to 67 GHz at 50 \u03a9 impedance, the 1.85-KFD4 provides stable 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