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A-1JB — Amphenol product photo
Amphenol

A-1JB U.FL (AMC) Jack, 50 Ohm, 6 GHz, SMT, Active

MPNA-1JB
Active

AMC series U.FL (UMCC) jack, male pin, 1 port, 50 Ohm impedance, 6 GHz max frequency, surface mount, solder termination, gold center contact, snap-on fastening, white LCP housing.

$0.9700Ref. price · indicative, final on quote
A-1JB datasheet
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Specifications

A-1JB Technical Specifications
ParameterValue
SeriesAMC
Mounting typeSurface Mount
Connector typeU.FL (UMCC), AMC
Fastening typeSnap-On
Voltage rating60 V
Frequency - max6 GHz
Operating temperature-40°C~90°C
Housing colorWhite
Dielectric materialLiquid Crystal Polymer (LCP)
Center contact materialBrass
PackageTape & Reel (TR); Cut Tape (CT)
Impedance50Ohm
Mating cycles30
Number of ports1
Shield terminationSolder
Contact terminationSolder
Center contact platingGold

Product details

50 Ohm U.FL/AMC Jack, 6 GHz, SMT

The A-1JB: It is a single-port, surface-mount connector with a snap-on fastening mechanism, designed for compact RF interconnects in wireless modules, GPS receivers, and embedded antenna feeds. The white LCP dielectric and gold-plated brass centre contact suit it for repeated signal-path duty within its 30 mating-cycle rating.

SMT termination and board layout

Surface-mount termination with solder shield termination means this connector reflows in a standard SMT line alongside other passive components. The 50 Ohm impedance requires a controlled-impedance trace on the PCB — the launch geometry (trace width, ground plane clearance) must match the connector footprint to keep the signal path clean to 6 GHz. The LCP dielectric handles the -40°C to 90°C operating range without significant dimensional shift.

Frequently asked questions

What is the impedance of the A-1JB?

The A-1JB is a 50 Ohm connector, matched to standard RF transmission lines.

Is the A-1JB compatible with standard U.FL cables?

Yes, the A-1JB is a U.FL (UMCC) / AMC style jack, male pin, and mates with standard U.FL plug cables of the same interface.

What is the difference between A-1JB and A-4JA?

Both are 50 Ohm, 6 GHz, single-port AMC series jacks with snap-on fastening and 30 mating cycles. The A-4JA uses a gold-plated body and a thermoplastic dielectric, while the A-1JB has a white LCP housing and brass centre contact. They are not direct drop-in replacements — the body finish and dielectric differ.