STF-12-S1-C

E-Band Full Waveguide Band Compact Faraday Isolator
STF-12-S1-C is a full band Faraday isolator that operates from 60 to 90
GHz. The Faraday isolator is constructed with a longitudinal, magnetized
ferrite rod that causes a Faraday rotation of the incoming RF signal. The
compact, robust package is ideal for system integration and testing
applications. The Faraday isolator offers 28 dB typical isolation and 1.5
dB nominal insertion loss with good flatness. The input and output ports
are WR-12 waveguides with UG-387/U anti-cocking flanges. A 90° twist
configuration is available under model number STF-12-91-C.

Electrical Specifications:Parameter
RF Frequency

Minimum

TypicalMaximum

60 GHz90 GHzInsertion Loss

1.5 dB

Isolation

28 dB

Return Loss

14 dB

Power Handling

2.0 dBEAR99

1.2 W (CW)

Specification Temperature
Operating Temperature

ECCN

1.5 W (CW)

+25°C
-40°C

+85°C

FEATURES•••

Full Waveguide Band Operation
Moderate Insertion Loss
High Isolation• Compact Form Factor

APPLICATIONS••Test Lab
Instrumentations• Sub-assemblies

Mechanical Specifications:
Item

Specification

RF Input/Output WR-12 Waveguide with UG-387/U Anti-Cocking Flange
MaterialAluminum

FinishGold Plated and Black Anodized

Weight

0.8 Oz

SUPPLEMENTAL DETAILS

Insertion Length 1.0”
OutlineTF-SE-A-C

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2023 by Eravant

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STF-12-S1-C

Mechanical Outline: (Unless otherwise specified, all dimensions are in inches [millimeters])

NOTE:
•••
•

•

On condition that test data is provided it is collected from a sample lot. Actual data may vary slightly from unit to unit. Alltesting is performed under +25 °C room temperature.
On condition that simulated test data is provided, actual measured data may slightly vary.
The compact model with orthogonal input and output port is offered under model number STF-12-91-C.
The standard model is offered under STF-12-S1.
Eravant reserves the right to change the information presented without notice.

CAUTION:•••••

Exceeding absolute maximum ratings will damage the device.
The device is sensitive to magnetic fields. Keep the device at least 6” away from magnetic fields.
If a waveguide is present, any foreign objects in the waveguide will cause performance degradation and may damage ordestroy the unit.
For 1 mm connectors proper torque should be applied: 4.0 ± 0.15 inch-pounds (0.45 ± 0.02 Nm). Torque wrench model
SCH-06004-S1 is highly recommended.
For 1.35 mm, 1.85 mm, 2.4 mm, 2.92 mm, and SMA connectors proper torque should be applied: 8.0 ± 0.15 inch-pounds(0.90 ± 0.02 Nm). Torque wrench model SCH-08008-S1 is highly recommended

www.eravant.com | 424-757-0168 | support@eravant.comCopyright © 2023 by Eravant

Final Rev 1.1
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STF-12-S1-C

Typical Insertion Loss and Isolation vs. Frequency
00-2-5-4-10-15
Insertion Loss-8-20

Isolation-10-25-12-30-14-35-16-40-18-45-20-5060

657075Frequency (GHz)8085

Isolation (dB)

Insertion Loss (dB)-690

Typical Return Loss vs. Frequency
0-5
Input

Return Loss (dB)-10Output-15-20-25-30-35-40

60

65

70

75

80

85

90

Frequency (GHz)www.eravant.com | 424-757-0168 | support@eravant.comCopyright © 2023 by Eravant

Final Rev 1.1
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