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903-505J-51S1 — Amphenol product photo
Amphenol

903-505J-51S1 SMB Jack, 50 Ohm, 4 GHz, Bulkhead Kit

MPN903-505J-51S1
Active

SMB jack, male pin, 50 Ohms, 4 GHz, 500 mating cycles, panel mount bulkhead, crimp shield, solder contact, gold body, includes 6-piece kit.

$2.8400Ref. price · indicative, final on quote
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

903-505J-51S1 Technical Specifications
ParameterValue
Mounting typePanel Mount
Connector typeJack, Male Pin
Fastening typeSnap-On
Frequency - max4 GHz
Mounting featureBulkhead - Front Side Nut
Cable groupRG-179, 188, 316 Double Braid, M17/152-RD316
Operating temperature-65°C ~ 165°C
Body materialBrass
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk
Includes6 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink, 1 Lockwasher, 1 Nut
Impedance50 Ohms
Body finishGold
Mating cycles500
Insertion loss0.3dB
Number of ports1
Shield terminationCrimp
Contact terminationSolder
Center contact platingGold

Product details

Cable Termination and Shield

The 903-505J-51S1: Shield termination is crimp-style, which gives a reliable 360° ground connection to the cable braid. The centre contact is soldered. The specified cable groups are RG-179, RG-188, RG-316 Double Braid, and M17/152-RD316 — all 50 Ohm coax types with similar dielectric diameters. The supplied ferrule and heat shrink complete the termination; the heat shrink seals the cable entry against moisture and strain.

Materials and Environment

The body and centre contact are brass with gold plating. That wide range suits outdoor or engine-compartment environments where the connector sees thermal cycling.

Frequently asked questions

What is the mating cycle rating for the 903-505J-51S1?

The gold-on-gold contact interface supports repeated connect/disconnect without significant wear, which is typical for SMB snap-on connectors used in test or field-service applications.