Telegärtner BNC Male to SMA Male Coaxial Adapter, 50 Ohm, DC-4 GHz, Nickel-Plated Brass J01008A0018

When a BNC cable must connect to an SMA port, the wrong adapter can cause signal loss, reflections, or mechanical mismatch. The Telegärtner J01008A0018 solves this with a precision in-line adapter that converts a BNC male interface to an SMA male interface while maintaining a stable 50 Ω impedance across DC to 4 GHz.

Who is it for

RF technicians, test engineers, and installers who need a reliable, low-loss transition between BNC and SMA systems in laboratory, instrumentation, or antenna setups.

Main features

• BNC male to SMA male coaxial adapter, in-line configuration
• 50 Ω impedance with low VSWR (max 1.3:1 at 3 GHz)
• Nickel-plated brass body and gold-plated brass contacts for durability and corrosion resistance
• PTFE insulator for stable electrical performance over a wide temperature range
• Operating temperature: -40 °C to +85 °C

Specifications

• Connector A: BNC male
• Connector B: SMA male
• Impedance: 50 Ω
• Frequency range: DC – 4 GHz
• Body material: Brass, nickel-plated
• Contact material: Brass, gold-plated
• Insulator: PTFE
• VSWR (max): 1.3:1 at 3 GHz
• Insertion loss (max): 0.2 dB at 3 GHz
• Dielectric withstanding voltage: 1500 Vrms
• Insulation resistance: ≥ 5000 MΩ
• Contact resistance (center): ≤ 1.5 mΩ
• Contact resistance (outer): ≤ 1 mΩ
• Operating temperature: -40 °C to +85 °C
• Mounting type: In-line / free hanging

Tips

For best performance, ensure both mating connectors are clean and properly torqued. Avoid exceeding the specified frequency range to maintain signal integrity.