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RF termination (also called RF load or dummy load) ST0421 from Fairview

Microwave operates from DC to 4 GHz and handles up to 1 Watt (CW). This QMA

termination (or load) has a male gender. ST0421 QMA load termination offers

1.15:1 max VSWR.

RF terminations / loads are critical passive components in many RF, microwave

and millimeter wave systems where signal reflection from unused ports can reduce

the signal integrity can potentially damage the device. By terminating an unused

port with a matched load (dummy load), the incident energy will be absorbed with

minimal reflection. These radio frequency termination components are commonly

used to terminate devices such as couplers, circulators, and switches. Loads /

terminations are also widely used in measurement systems to ensure accurate

results. Fairview offers a large selection of in-stock RF, microwave and millimeter

wave terminations up to 65 GHz with great performance over the entire operating

range and with power handling capabilities up to 800 Watts (CW).

Electrical Specifications

Description

Min

Typ

Max

Units

Frequency Range

DC

4

GHz

Impedance

50

Ohms

VSWR

1.15:1

Input Power (CW)

1

Watts

derated linearly to 0.1W at +125°C

Input Power (Peak)

250

Watts

5µs pulse, 0.4% duty cycle

Mechanical Specifications

Size

Length

0.93 in [23.62 mm]

Width

0.41 in [10.41 mm]

.

Weight

0.0165 lbs [7.48 g]

.

Configuration

Connector

QMA Male

Material Specifications

.

Description

Material

Plating

Connector 1 Contact

Brass

Gold

MIL-G-45204

.

Body

Brass

Nickel

.

Housing

Brass

Nickel

.

Environmental Specifications

Temperature

Operating Range

-55 to +125 deg C

ST0421

DATA SHEET

RF Load 1 Watts To 4 GHz Nickel Plated Brass QMA

Male

Fairview Microwave

1130 Junction Dr. #100

Allen, TX 75013

Tel: 1-800-715-4396 / (972) 649-6678

Fax: (972) 649-6689

www.fairviewmicrowave.com

sales@fairviewmicrowave.com

Features:

• DC to 4 GHz Frequency Range

• VSWR 1.15:1 Max

• Max Power 1 Watt (CW)

• QMA Male Coaxial Interface

Applications:

• Wireless

• SatCom

• Radar Systems

• Test and Measurement

• Commercial and Military

Communication