Product Overview
50 Ohm Straight RF Coaxial Feedthrough Female-to-Female Panel Coupler
Condition
New old stock (NOS). Unused component in clean physical condition with complete mounting hardware, including hex nut and star lock washer. Markings stamped on connector barrel: 31-4803.
Ships same or next business day from our Idaho warehouse. Honest pricing, no nonsense.
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Product Overview
Amphenol 31-4803 is a 50-ohm straight isolated bulkhead BNC female-to-female adapter engineered for RF panel feedthrough applications. Built with a molded thermoplastic insulating bushing, it isolates coaxial ground from the equipment chassis to prevent ground loops. Features a nickel-plated brass body, silver-plated beryllium copper contacts, and standard BNC bayonet coupling rated from DC to 4 GHz.
Key Features
- Straight BNC jack (female) to BNC jack (female) coaxial interface
- 50-ohm nominal impedance with operational bandwidth from DC to 4 GHz
- Isolated bulkhead design with molded thermoplastic insulating bushing
- Dielectric withstanding voltage rated at 1500 VRMS minimum
- Nickel-plated brass body with silver-plated beryllium copper center contacts
- Includes panel mounting hex nut and internal-tooth lock washer
Applications
- Mounting isolated RF inputs and outputs on metal chassis without creating ground loops
- Connecting test bench instrumentation, oscilloscopes, and signal generators through rack panels
- Building custom RF distribution panels, ham radio enclosures, or laboratory patch bays
Frequently Asked Questions
Does this bulkhead adapter isolate the coaxial shield from the chassis?
Yes. The connector features an integrated white thermoplastic insulating bushing that prevents electrical continuity between the BNC outer conductor and a metal mounting panel.
What panel mounting hardware comes with the connector?
The connector comes complete with its matching hex mounting nut and toothed lock washer.
Why buy an individual Amphenol 31-4803 adapter here instead of a surplus bulk lot?
You receive the exact, individually inspected connector shown in the photographs with its correct mounting hardware, avoiding mixed-condition lots or unbranded clones. Shipping is $8 flat rate, free once the order passes $28, and orders leave the Idaho warehouse the same or next business day.
Ground loops have a way of ruining an otherwise clean signal chain. An isolated bulkhead feedthrough is the simple, permanent fix that keeps panel noise off your RF line.
