Key Specifications
Description
BNC Fixed Attenuator | 3 dB | 1 W | DC–2 GHz
The ROSNOL BNC Fixed Attenuator, model FA-B1B25A-2G1W3/H33-H3, is designed for controlled RF signal attenuation in 50-ohm systems operating from DC to 2 GHz. This attenuator provides a nominal attenuation value of 3 dB with an accuracy of ±0.3 dB, supporting predictable signal level adjustment in RF and test environments.
Rated for an average power handling of 1 watt at 25 °C, the attenuator maintains stable electrical performance with a typical VSWR of ≤ 1.20. The BNC plug (male) to BNC jack (female) configuration utilizes a bayonet-lock coupling mechanism, ensuring secure mechanical connection with a minimum of 500 mating cycles. The center contact captivation provides axial retention of at least 15 N for reliable mechanical durability.
The FA-B1B25A-2G1W3/H33-H3 is constructed with gold-plated phosphor bronze center contacts and nickel-plated brass body components, combined with PTFE insulation and silicone rubber sealing. Manufactured in ISO 9001-certified facilities, this attenuator is fully compliant with RoHS requirements.
