The 112556B: The 75 Ohm impedance sets this apart from the standard 50 Ohm BNC used in RF test equipment — it is built for the characteristic impedance of broadcast video, CCTV, and data-com links where signal reflections from an impedance mismatch would degrade the picture or bit-error rate. The 0.2 dB insertion loss figure confirms the impedance match is held tight through the connector body, so the signal sees a continuous 75 Ohm path from cable to cable.
Amphenol RF 112556B BNC Plug, 75 Ohm, 500 Cycles
MPN112556B
Active
Amphenol RF BNC plug, male pin, 75 Ohm, 1 port, bayonet lock, 500 mating cycles, 0.2 dB insertion loss.
$3.2320Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Connector type | Plug, Male Pin |
| Fastening type | Bayonet Lock |
| Impedance | 75Ohm |
| Mating cycles | 500 |
| Insertion loss | 0.2dB |
| Number of ports | 1 |
Product details
Frequently asked questions
How many mating cycles does 112556B have?
The gold-over-nickel contact finish supports this reconnect duty without contact fretting.