High-Quality SMA-Kfd13 Coaxial Straight Flange Connector for Reliable Connection

SMA-KFD13 RF Coaxial Connector, SMA Series (Female, Flange Mount)

The SMA-KFD13 is an SMA series RF coaxial connector designed for microwave and RF signal transmission in aerospace, avionics, communication, and test equipment. It conforms to SMA interface standards (IEC 61169-15 / MIL-PRF-39035 / GJB681). The SMA-KFD13 is a panel-mount flange receptacle with female (socket) contacts. Note: SMA is a coaxial RF connector standard, fundamentally different from multi-pin circular connector standards such as MIL-DTL-38999/GJB599, MIL-DTL-27484, MIL-DTL-27497, MIL-DTL-27508, MIL-DTL-26482, JY27466, 8D, Y50, YLH, ZH8525, and YH3116 series, and is not interchangeable with any of those connector families.

This connector features a female (socket) contact interface (K), flange panel-mount configuration (FD), and configuration code 13. The SMA series provides 50-ohm impedance with threaded coupling, supporting signal frequencies up to 18 GHz (typical). The "K" designator indicates female/socket contacts (Chinese convention: K = 孔/socket), "F" indicates flange mounting, "D" is a flange/panel variant code, and "13" is a configuration code — confirm exact meaning of "D" and "13" with supplier.

Product Features

• SMA series RF coaxial connector — IEC 61169-15 / MIL-PRF-39035 / GJB681 compliant interface
• Female (socket) contacts (K) for mating with male (pin) SMA connectors
• Flange panel-mount configuration (FD) for chassis/bulkhead installation
• 50-ohm impedance, DC to 18 GHz frequency range (typical for SMA)
• Threaded coupling mechanism for secure RF connection
• Gold-plated contacts for low insertion loss and corrosion resistance
• Low VSWR and excellent RF performance for microwave applications
• Configuration code 13 — confirm exact variant meaning with supplier

Technical Specifications - SMA-KFD13

Part Number Breakdown

Related options: SMA-JFD13 with male (pin) contacts; SMA-KFD13 with cable mount for cable assembly; SMA-KYD13 for straight cable plug variant; SMA-KFD13 is the flange panel-mount female receptacle. Mating connector: SMA-J type male connector. Important: SMA series is an RF coaxial connector standard and is NOT interchangeable with multi-pin circular connectors including D38999/J599, MS27484, MS27497, MS27508, 62GB/MIL-DTL-26482, JY27466, 8D, Y50, YLH, ZH8525, or YH3116 series. The "D" variant code and "13" configuration code must be confirmed with supplier.

Compatible Applications

The SMA-KFD13 connector is intended for platforms that require RF signal transmission with panel-mount SMA interfaces. Typical use cases include:

• RF and microwave communication equipment
• Aerospace and avionics antenna systems
• Test and measurement instrumentation
• Radar and electronic warfare systems
• Base station and wireless infrastructure
• Panel/bulkhead RF feed-through connections

Selection Guide

Installation Notes

• Verify connector type (female/socket), flange mount style, and configuration code 13 before installation. Confirm "D" variant code and "13" configuration meaning with supplier.
• Use proper torque wrench for SMA coupling (typically 5–10 in-lbs / 0.3–0.6 N·m, confirm with supplier).
• Align flange holes with panel mounting holes and secure with appropriate hardware.
• Mate only with SMA series male (pin) connectors — do NOT attempt to mate with multi-pin circular connectors.
• Handle gold-plated contacts with care to avoid contamination or damage to the RF interface.

Why Choose SMA-KFD13

SMA RF Coaxial Performance

Choosing SMA-KFD13 ensures compliance with SMA series RF coaxial interface standards for programs that require reliable microwave signal transmission. The flange panel-mount configuration with female contacts provides a stable chassis/bulkhead RF feed-through. Note: this connector is NOT a multi-pin circular connector and is NOT interchangeable with D38999/J599, MS27484, MS27497, MS27508, 62GB, JY27466, 8D, Y50, YLH, ZH8525, or YH3116 series parts. Confirm exact specifications, "D" variant code meaning, "13" configuration code meaning, and interchangeability with supplier.

Ordering Information

Order by the designation SMA-KFD13. When requesting a quote, please confirm mating connector part number (SMA-J male), flange dimensions, contact plating, "D" variant code meaning, "13" configuration code meaning, and required quantity.