The SMA female 4-hole flange mount RF connector<\/strong> with a 0.4 mm pin and 8.64 mm hole spacing provides a robust solder attachment<\/strong> interface for precision RF systems. Operating from DC to 18 GHz at 50 \u03a9 impedance<\/strong>, this connector ensures low-loss and stable signal transmission across a wide range of commercial and laboratory-grade applications.<\/p>\n With VSWR \u2264 1.08<\/strong> and insertion loss \u2264 0.06 \u221aF(GHz) dB<\/strong>, the SMA female solder flange connector<\/strong> delivers excellent impedance matching and minimal reflection. The 0.4 mm center pin guarantees accurate alignment and consistent electrical performance in broadband circuits.<\/p>\n Constructed from stainless steel with gold-plated beryllium copper contacts, the SMA female flange connector<\/strong> provides high conductivity, wear resistance, and durability under repeated connections. It is fully REACH and RoHS compliant<\/strong>, ensuring environmentally safe materials and long-term reliability.<\/p>\n The 8.64 mm 4-hole flange design supports easy installation in 4-hole flange mount RF assemblies<\/a> used in amplifiers, communication analyzers, and precision test instruments. The solder attachment ensures a secure, vibration-resistant electrical interface.<\/p>\n Mechanc\u2019s SMA RF connector<\/a> series includes solder, crimp, and field-replaceable models engineered for optimal performance and mechanical reliability. Discover additional options in our RF Connector Catalog<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" SMA Female 4-Hole Flange Mount RF Connector \u2013 Solder Attachment, Model SMA-KFD39 The SMA female 4-hole flange mount RF connector with a 0.4 mm pin and 8.64 mm hole spacing provides a robust solder attachment interface for precision RF systems. Operating from DC to 18 GHz at 50 \u03a9 impedance, this connector ensures low-loss and […]<\/p>\n","protected":false},"featured_media":1708,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false},"attachment-method":[],"body-material":[],"body-style":[151],"center-conductor-type":[],"connection-type":[],"dielectric-type":[],"frequency-max":[192],"connector-gender":[],"impedance":[],"interface-type":[248],"jacket-material":[],"main-feature":[],"max-operating-temperature":[],"mount-method":[165],"no-of-shields":[],"connector-series":[],"termination-type":[196],"vswr-max":[],"vswr-typical":[],"product_brand":[],"product_cat":[17,50],"product_tag":[],"product_application":[],"class_list":["post-8216","product","type-product","status-publish","has-post-thumbnail","body-style-straight","frequency-max-18-ghz","interface-type-solder","mount-method-4-hole-flange","termination-type-terminal","product_cat-rf-connectors","product_cat-sma-connectors","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":{"connector_1":"1,0 \u043c\u043c, \u0448\u0442\u0435\u043a\u0435\u0440","connector_2":"1,0 \u043c\u043c, \u0448\u0442\u0435\u043a\u0435\u0440","outer_diameter":"","static_bend_radius":"","velocity_of_propagation":"","jacket_diameter":"","loss_at_max_frequency":"","power_at_max_frequency":"","flex_type":"","phase_stability":"","spec_sheet":30311,"amplitude_stability":"","dynamic_bend_radius":"","temperature_range":"","inner_conductor_material":"","inner_conductor_diameter":"","inner_conductor_type":"","jacket_material":"","operating_frequency":"","coaxial_cable":"","cable_armor":""},"_links":{"self":[{"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product\/8216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/comments?post=8216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/media\/1708"}],"wp:attachment":[{"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/media?parent=8216"}],"wp:term":[{"taxonomy":"attachment-method","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/attachment-method?post=8216"},{"taxonomy":"body-material","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/body-material?post=8216"},{"taxonomy":"body-style","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/body-style?post=8216"},{"taxonomy":"center-conductor-type","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/center-conductor-type?post=8216"},{"taxonomy":"connection-type","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/connection-type?post=8216"},{"taxonomy":"dielectric-type","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/dielectric-type?post=8216"},{"taxonomy":"frequency-max","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/frequency-max?post=8216"},{"taxonomy":"connector-gender","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/connector-gender?post=8216"},{"taxonomy":"impedance","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/impedance?post=8216"},{"taxonomy":"interface-type","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/interface-type?post=8216"},{"taxonomy":"jacket-material","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/jacket-material?post=8216"},{"taxonomy":"main-feature","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/main-feature?post=8216"},{"taxonomy":"max-operating-temperature","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/max-operating-temperature?post=8216"},{"taxonomy":"mount-method","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/mount-method?post=8216"},{"taxonomy":"no-of-shields","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/no-of-shields?post=8216"},{"taxonomy":"connector-series","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/connector-series?post=8216"},{"taxonomy":"termination-type","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/termination-type?post=8216"},{"taxonomy":"vswr-max","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/vswr-max?post=8216"},{"taxonomy":"vswr-typical","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/vswr-typical?post=8216"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product_brand?post=8216"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product_cat?post=8216"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product_tag?post=8216"},{"taxonomy":"product_application","embeddable":true,"href":"https:\/\/mechanc.com\/ru\/wp-json\/wp\/v2\/product_application?post=8216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Electrical Performance and Signal Stability<\/h3>\n
Material Quality and Compliance<\/h3>\n
Applications and Mounting Flexibility<\/h3>\n
Explore SMA Connector Solutions<\/h3>\n