Key Specifications
Type Design:
Standard
Connection Type:
In-Series
Connector 1 Series:
SMA
Connector 1 Gender:
Jack (Female)
Connector 2 Series:
SMA
Connector 2 Gender:
Plug (Male)
Impedance (Ohm):
50
Connector 1 Connection Method:
Threaded (Screw-lock)
Connector 2 Connection Method:
.
Frequency, Max (GHz):
18
Connector 1 Body Material:
Stainless Steel
Connector 1 Body Plating:
Passivated
Connector 2 Body Material:
Stainless Steel
Connector 2 Body Plating:
Passivated
VSWR, Max:
1.30
Volt:
250
Description
SMA DC Block | 5 MHz to 18 GHz | 50 Ω | 250‑Volt Inner Conductor Block | Plug (Male) to Jack (Female)
The ROSNOL DB-A1A25A-18G250V/9XX-9X is engineered as a precision DC block featuring a SMA Plug (Male) to SMA Jack (Female) DC block on the inner conductor, supporting high‑frequency operation up to 18 GHz. It offers 50 Ω impedance, supports frequencies from 5 MHz to 18 GHz, and maintains VSWR of ≤1.3 with insertion loss max. 0.4 dB. The mechanical design includes a screw-lock coupling mechanism and durable construction suited for high‑reliability RF signal paths.The center contact is beryllium copper with gold plating, the body is stainless steel with passivation, the insulator is PTFE, the gasket is silicone rubber, and the coupling nut is stainless steel with passivation. These characteristics make the product suitable for RF, microwave, telecommunications, laboratory measurement systems, and other high‑frequency signal chain applications.
ROSNOL’s RF components are manufactured under ISO 9001‑certified processes and fully comply with RoHS and REACH requirements. The product line delivers high performance at competitive pricing, making it a strong alternative to major European and American brands. Customization for plating, materials, and mechanical features is available upon request.
