DC-67 GHz, 3-40 dB, 10 Watts, 1.85mm, Unidirectional – SRFS-67XX185D10

The SRFS-67XX185D10 1.85mm Unidirectional Fixed Attenuator is a high-performance RF component designed for applications up to 67 GHz. Available in attenuation values from 3 to 40 dB, it supports power levels up to 10 Watts for reliable signal control. Its precision 1.85mm interface provides excellent electrical performance, low VSWR, and stable signal attenuation across a wide frequency range. The unidirectional design makes it suitable for RF testing, measurement systems, microwave equipment, aerospace, defense, telecommunications, and laboratory applications. Engineered for demanding high-frequency environments, it delivers consistent performance and dependable signal management.

Get a Quote


Download Brochure

Electrical Specifications

Impedance	50 ohm
Frequency Range	DC-67 GHz
VSWR	1.45 max
Input Avg Power	10W @ 25°C ambient, derating linearly to 1W at 100°C
Peak Power	50W (5 micro-sec pulse width, 6% duty cycle)
Direction	Unidirectional, 1.85mm male input, 1.85mm female output (other configurations available)
Attenuation (dB)	3-10	20	30	40
Accuracy (dB)	-1.5/+1.8	-1.2/+1.5	-1.2/+1.5	-1.2/+1.5

Mechanical Specifications

Connector Body	Passivated stainless steel
Heat Sink	Black anodized aluminum
Center Contact	1.27um Gold plated BeCu
Net Weight	Approx 55 g

Environmental Specifications

Operating Temperature	-55°C to 100°C
Storage Temperature	-55°C to 125°C
RoHS	Compliant
Temperature Coefficient	<0.0004 dB/dB/°C