TNC DC bias passing attenuators up to 3 GHz : BM10058 Series | Bracke Manufacturing

The Bracke Manufacturing BM10058 Series consists of coaxial RF attenuators with TNC male-to-female connectors. The components provide defined RF signal attenuation while allowing a DC bias voltage to pass through the same coaxial connection.

The product series is available with attenuation values of 3 dB, 6 dB, 10 dB and 20 dB. All models feature a 50-ohm impedance, a maximum RF input power of 2 W and a maximum VSWR of 1.35:1.

Advantages

• DC bias passing: Carries the RF signal and DC voltage over the same coaxial signal path.
• Four attenuation values: Selection of 3 dB, 6 dB, 10 dB or 20 dB models.
• TNC male-to-female: Direct integration into coaxial 50-ohm connections using TNC interfaces.
• Frequency range up to 3 GHz: Suitable for corresponding RF signal paths and measurement setups.
• RF input power up to 2 W: Common power rating across all models in the series.
• RoHS compliant: All models listed in the provided document are identified as RoHS compliant.

Key features

• Connectors: TNC male to TNC female
• Impedance: 50 ohms
• Attenuation values: 3 dB, 6 dB, 10 dB or 20 dB
• Maximum frequency range: up to 3 GHz, depending on the model
• Maximum VSWR: 1.35:1
• Maximum RF input power: 2 W
• Maximum voltage: 100 V
• Contacts: gold-plated
• Insulator: PTFE
• Compliance: RoHS compliant

Typical applications

• Defined attenuation of RF signals in 50-ohm systems
• Coaxial signal paths carrying a simultaneous DC bias voltage
• RF measurement, test and laboratory setups using TNC interfaces
• Signal-level adjustment between RF components within the specified frequency range
• Reduction of signal levels ahead of downstream RF components

Additional information

The BM10058.3, BM10058.6 and BM10058.10 models use a passivated stainless-steel body. The BM10058.20 model is specified with a tri-metal-plated brass body.

The 3, 6 and 10 dB models are rated for a maximum DC current of 2 A. The 20 dB model has a maximum DC current rating of 100 mA.

EMCO provides technical support for selecting the appropriate attenuation value and integrating these components into RF measurement, test and system solutions.

Model comparison