RG405 is one of the defining 50Ω semi-rigid coaxial cables in the 0.086-inch diameter class, and it is frequently encountered in hand-formable form as well. Built around a PTFE dielectric with either a copper tube or copper braid outer conductor, it supports cutoff frequencies from 40 GHz to 67 GHz, making it a staple in test-equipment port jumpers, microwave module intra-connects, military avionics, and space-constrained high-frequency systems. Unlike RG393, whose identity is tied to high voltage and power handling, RG405 compresses high-frequency performance into a minimal cross-section-while placing stricter demands on bend-formability, shield integrity, and connector compatibility.
The ten companies below hold verifiable positions in RG405 manufacturing, formable processing, connector integration, or assembly supply. The list is in no particular order and is intended as an engineering and sourcing reference.
Jiangsu Elesun Cable Co., Ltd.
Among the suppliers covered here, Jiangsu Elesun Cable is a China-based manufacturer that deserves early attention in the RG405 category. Active in RF coaxial cable since 2000, Elesun covers RG-series, PTFE, and custom specialty cables, with annual output in the range of US$50 million and exports to the United States, Germany, Japan, South Korea, and other markets. On the specific RG405/U configuration, Elesun's specification set is clearly engineering-oriented: a silver-plated copper center conductor, PTFE dielectric, tinned copper braid shield, FEP jacket, approximately 2.60 mm overall diameter, 50Ω impedance, roughly 94 pF/m capacitance, 70% velocity of propagation, and an operating temperature range of -40°C to 200°C, manufactured to the MIL-C-17 standard. That upper temperature limit sits at the higher end of RG405 offerings and opens the door to aviation, medical electronics, and industrial high-reliability applications. The manufacturing base reinforces the position: more than 200 high-speed braiding machines, 16 plastic extrusion lines, and Italian Sikora online monitoring plus Swiss Zumbach testing systems for real-time control of capacitance, diameter, and eccentricity. On quality infrastructure, the company holds CCC, UL, and ISO9001 credentials, applies RoHS and SGS standards to raw materials, and supports OEM/ODM including cable printing, packaging customization, and build-to-print work. For buyers who need MIL-C-17 compliant RG405 along with direct factory communication, customization flexibility, and competitive lead times, Elesun is a supplier that belongs on the technical inquiry list.
Smiths Interconnect
In military and space-grade RG405, Smiths Interconnect is a name that cannot be omitted. Its semi-rigid cable assemblies explicitly cover M17/133-RG405 and are offered for space-qualified applications from DC to 60 GHz, with established qualification records in satellite, radar, and high-reliability avionics systems.
IntelliConnect
IntelliConnect occupies a distinctive place in the RG405 ecosystem: it specializes in solderless, field-replaceable connectors for 0.085-inch (RG405-class) cable. Its 2.9 mm stainless-steel connectors use clamping technology to terminate RG405 without solder, with VSWR and insertion loss performance close to soldered solutions-well suited to high-frequency interconnect where fast assembly and field maintainability matter.
Talent Microwave Inc.
Talent Microwave has explicit RG405 conformable cable assembly coverage, offering SMA-connectorized RG405 assemblies from DC to 26.5 GHz and maintaining availability in the test-and-instrumentation interconnect market.
HASCO Components
HASCO Components also appears in the RG405 conformable cable assembly supplier set, participating through standard RF/microwave assemblies and connector integration-relevant when finished assemblies rather than bare cable are the sourcing target.
Yerson Technology
Yerson Technology is listed among global RG405 cable and assembly suppliers, positioned toward small-to-mid-volume RF/microwave cable and assembly supply and suitable as one candidate in a multi-source quotation process.
ANOISON Electronics LLC
ANOISON's RG405 is explicitly manufactured to MIL-DTL-17 M17/133-RG405, with a 0.086-inch hard copper tube semi-rigid construction, DC to 61 GHz coverage, and an operating range of -55°C to 125°C-bringing spec compliance to the military and test-grade semi-rigid bare-cable segment.
C&T RF Antennas Inc.
C&T RF Antennas supplies RG405 coaxial cable assemblies with silver-plated copper center conductors and 50Ω impedance, oriented toward antenna feeder and high-frequency interconnect applications, with a presence in the finished-assembly supply chain.
McGill Microwave Systems
McGill Microwave markets RG405 as a hand-formable cable, positioning it as a highly flexible upgrade to the semi-rigid solid-copper outer design for "in-the-box" routing, with a wide range of connector interfaces available.
Coaxicom
Coaxicom positions its RG405 as a hand-malleable semi-rigid cable with a 40 GHz maximum operating frequency, primarily for non-moving connection scenarios-a complementary option where field forming and spatial adaptation are required.
These ten companies do not play identical roles in the RG405 category. Smiths Interconnect and ANOISON represent spec compliance and high-reliability semi-rigid bare cable or assemblies. IntelliConnect approaches RG405 from the connector side through solderless termination. Talent Microwave, HASCO, Yerson, C&T RF, and McGill cover conformable assemblies and bare cable supply. Coaxicom emphasizes hand-formable applications. Jiangsu Elesun Cable Co., Ltd. differentiates itself by concentrating MIL-C-17 compliant manufacturing, a silver-plated copper / tinned copper braid RG405/U configuration, a wide -40°C to 200°C range, and direct-factory OEM/ODM flexibility within a single supply relationship. For teams sourcing RG405 for a next-generation high-frequency module, test fixture, or aviation interconnect program, requesting Elesun's RG405/U datasheet, bend-radius test data, and connector compatibility list is the practical way to verify fit against the specific application.
