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919-389P-51A — Amphenol product photo
Amphenol

919-389P-51A MCX Plug, 50 Ohm, 6 GHz, Snap-On, RG-178

MPN919-389P-51A
Active

Amphenol RF MCX plug, male pin, 50 Ohm, 6 GHz, snap-on, for RG-178/196, solder contact, crimp shield, nickel body, gold center contact, 500 mating cycles.

$5.8300Ref. price · indicative, final on quote
919-389P-51A datasheet
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MOQ1 pcs
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Specifications

919-389P-51A Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line), Right Angle
Connector typePlug, Male Pin
Fastening typeSnap-On
Frequency - max6 GHz
Cable groupRG-178, 178A, 178B, 196, 196A, M17/93-RG178
Operating temperature-40°C~85°C
Body materialBrass
Housing colorSilver
Dielectric materialPolyoxymethylene (POM) Acetal, Polytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk
Includes4 pcs - 1 Connector, 1 End Cap, 1 Ferrule, 1 Insulator
Impedance50Ohm
Body finishNickel
Mating cycles500
Number of ports1
Shield terminationCrimp
Contact terminationSolder
Center contact platingGold

Product details

MCX Snap-On Plug for RG-178/196 — 50 Ohm to 6 GHz

The 919-389P-51A is an Amphenol RF MCX-series plug connector, configured as a male pin with snap-on coupling. The connector terminates to RG-178, RG-178A, RG-178B, RG-196, RG-196A, or M17/93-RG178 cable via a solder contact and crimped shield termination.

What the 6 GHz and 500-Cycle Ratings Mean

The 6 GHz frequency ceiling is the practical limit for this MCX interface — beyond that, the snap-on geometry and dielectric materials (POM acetal and PTFE) introduce impedance discontinuities that degrade return loss. The 500 mating-cycle rating is typical for a snap-on RF connector; the gold-plated centre contact resists wear through repeated connect-disconnect cycles in test setups or field-swappable modules. The nickel-plated brass body provides adequate RF shielding for indoor and controlled-environment use, though it lacks the corrosion resistance of stainless for outdoor or marine deployment.

Kit Contents and Field Assembly

The end cap and ferrule are crimped over the cable braid after the centre conductor is soldered to the pin.

Frequently asked questions

What cable does 919-389P-51A work with?

It is designed for RG-178, RG-178A, RG-178B, RG-196, RG-196A, and M17/93-RG178 cable groups. The centre contact is soldered; the shield is crimped via the included ferrule.