Key Specifications
Type Design:
Standard
Connection Type:
In-Series
Connector 1 Series:
SMA
Connector 1 Gender:
Plug (Male)
Connector 2 Series:
SMA
Connector 2 Gender:
Jack (Female)
Impedance (Ohm):
50
Connector 1 Connection Method:
Threaded (Screw-lock)
Connector 2 Connection Method:
Threaded (Screw-lock)
Frequency, Max (GHz):
18
Connector 1 Body Material:
Brass
Connector 1 Body Plating:
Gold Plating (Non-magnetic nickel-phosphorus underplating)
Connector 2 Body Material:
Brass
Connector 2 Body Plating:
Gold Plating (Non-magnetic nickel-phosphorus underplating)
VSWR, Max:
1.25
Volt:
100
Description
SMA Plug (Male) to SMA Jack (Female) DC Block | DC–18 GHz | Screw-Lock | Brass Body
The ROSNOL DB-A1A25A-18G100V/911-91 inner DC block delivers superior isolation for RF systems up to 18 GHz. It maintains 50 Ω impedance with VSWR ≤ 1.25 (≥19.08 dB) and insertion loss ≤ 0.65 dB. Rated for 100 V DC, this connector features a screw-lock coupling mechanism, supports ≥500 mating cycles, and offers robust mechanical integrity with axial captivation ≥27 N and torque up to 1.7 Nm.Designed for harsh environments, it operates from -65°C to +155°C and meets MIL-STD requirements for thermal shock, corrosion, vibration, and moisture resistance. Materials include beryllium copper center contacts with gold plating over non-magnetic nickel-phosphorus, brass body and coupling nut with the same plating, PTFE insulator, and silicone rubber gasket, ensuring durability and high conductivity.
ROSNOL’s precision-engineered solutions offer a competitive alternative to products from leading manufacturers in Europe, the USA, and other global markets. All ROSNOL components are manufactured in ISO 9001-certified facilities and fully comply with RoHS and REACH regulations, ensuring environmental safety and global regulatory alignment. Customization services for materials, plating, and mechanical design are available to support specialized requirements across a wide range of RF and microwave applications.
