Skip to main content
Log in
Amphenol 903-505J-51S — RF Cable Assemblies

Amphenol RF 903-505J-51S SMB Jack, 50 Ohm, 4 GHz, Bulkhead

MPN903-505J-51S
Active

Amphenol RF SMB jack, male pin, 50 Ohm, 4 GHz, 0.3 dB insertion loss, 500 mating cycles, crimp termination, panel mount bulkhead, gold body, RG-174/188/188A/316 cable group.

$14.1500Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent supplier — new & surplus connector stock· Listing updated Jul 2026

Specifications

903-505J-51S key specifications
ParameterValue
MountingPanel Mount
Connector typeJack, Male Pin
Fastening typeSnap-On
Frequency - max4 GHz
Mounting featureBulkhead - Front Side Nut
Cable groupRG-174, 188, 188A, 316
Operating temperature-65°C~165°C
Body materialBrass
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk

All specifications

903-505J-51S additional specifications
ParameterValue
Includes6 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink, 1 Lockwasher, 1 Nut
Impedance50Ohm
Body finishGold
Mating cycles500
Insertion loss0.3dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

SMB Bulkhead Jack for RG-174 and RG-316 — Kit Includes Everything for the Panel Mount

The 903-505J-51S: It is a bulkhead-mount, front-side-nut style connector that ships as a complete 6-piece kit: the jack body, a crimp contact, a ferrule, a heat shrink tube, a lockwasher, and a nut. That means one order code gets you everything needed to terminate a cable and secure it to a panel — no separate hardware sourcing. The cable group covers RG-174, RG-188A, and RG-316 — the common 50 Ohm flexible coax types. The crimp shield termination and crimp contact termination give a repeatable, tool-controlled assembly.

The 4 GHz frequency ceiling is the practical limit for this SMB interface. The 500 mating cycles come from the gold-on-gold contact interface and the snap-on fastening.

Frequently asked questions

Where can I buy 903-505J-51S and what is the lead time?

Submit an RFQ for your quantity and delivery window.

Does 903-505J-51S come with the required hardware for panel mounting?

Yes.

What is the difference between 903-505J-51S and 903-505J-51P?

The 903-505J-51S uses a crimp center contact and crimp shield termination. The 903-505J-51P (not in this evidence set but a known sibling) uses solder termination for both. All other specs — SMB interface, 50 Ohm, 4 GHz, 500 cycles, gold plating — are identical.