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142138-75 — Amphenol product photo
Amphenol

Amphenol RF 142138-75 SMB Jack, 75 Ohm, Through Hole, Gold

MPN142138-75
Active

Amphenol RF SMB mini jack, male pin, 75 Ohm, through-hole, gold body, snap-on fastening, 500 mating cycles, 0.3 dB insertion loss.

$5.3500Ref. price · indicative, final on quote
142138-75 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

142138-75 Technical Specifications
ParameterValue
Mounting typeThrough Hole
Connector typeJack, Male Pin
Fastening typeSnap-On
Operating temperature-65°C~165°C
Body materialBrass
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk
Impedance75Ohm
Body finishGold
Mating cycles500
Insertion loss0.3dB
Number of ports1
Shield terminationSolder
Contact terminationSolder
Center contact platingGold

Product details

The 142138-75: Active lifecycle — no obsolescence flag on this line.

Gold body finish and gold centre contact plating resist corrosion across the 500-cycle life.

50 Ohm vs 75 Ohm – Which SMB Jack Fits Your Line

The 142138-75 is a 75 Ohm jack. The sibling 142138 (base number 1421) is the 50 Ohm version — same brass/gold body, same snap-on coupling, same 500-cycle rating, same PTFE dielectric. The impedance is the only selection difference, but it is non-negotiable: a 75 Ohm jack in a 50 Ohm system destroys return loss. Match the impedance to your cable and board trace.

Frequently asked questions

What is the body material and finish of 142138-75?

Brass body with gold finish. The centre contact is also brass with gold plating.