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142178-75 — Amphenol product photo
Amphenol

142178-75 SMB Mini Plug, 75 Ohm, RG-179/187, Active

MPN142178-75
Active

Amphenol 142178-75 SMB mini plug, 75 Ohm, female socket, solder contact, crimp shield, for RG-179 and RG-187 cable, -65°C to 165°C, 500 mating cycles, Bulk.

$6.8387Ref. price · indicative, final on quote
142178-75 datasheet
StockContact for availability
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
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Specifications

142178-75 Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typePlug, Female Socket
Fastening typeSnap-On
Voltage rating335 V
Cable groupRG-179, 187
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBeryllium Copper
PackageBulk
Includes4 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink
Impedance75Ohm
Body finishNickel
Mating cycles500
Insertion loss0.3dB
Number of ports1
Shield terminationCrimp
Contact terminationSolder
Center contact platingGold

Product details

The 142178-75 is an SMB mini plug with a 75 Ohm impedance — a snap-on, subminiature RF connector built for RG-179 and RG-187 cable. This is the female socket version, free-hanging, terminated by soldering the centre contact and crimping the shield. The 75 Ohm variant is less common than the 50 Ohm SMB; it's used where the cable plant is already 75 Ohm — think video distribution, broadcast gear, or test equipment that runs on RG-179 or RG-187.

This plug accepts RG-179 and RG-187 coax — both 75 Ohm, 2.5 mm to 3 mm diameter cables with a solid or stranded centre conductor. The included heat shrink goes over the ferrule-to-cable transition for strain relief and environmental sealing.

What the ratings tell you about the duty

The 335 V rating is the max working voltage at sea level; at higher altitudes or in low-pressure environments, derate it.

Frequently asked questions

Where can I buy 142178-75 and how do I get a price?

142178-75 is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time. No stock-holding claim; we source per your BOM quantity.

What cable does 142178-75 fit?

142178-75 fits RG-179 and RG-187 coaxial cable, both 75 Ohm types. The centre conductor is soldered, the braid is crimped with the included ferrule.

Is 142178-75 compatible with RG-179?

Yes, RG-179 is one of the two cables listed for this plug. The other is RG-187. Both are 75 Ohm coax with similar diameters.