RF121/GRF121 - High Frequency Electro-Mechanical Relays (DC-12GHz & DC-16GHz)
TELEDYNE RELAYS – April, 2016. Cumbernauld, Scotland.
Introduction
Teledyne Relays are delighted to show our brand
new, Ultraminiature, Hermetically Sealed, High
Frequency, Electro-Mechanical Relay, the RF121
(DC-12GHZ) & GRF121 (DC-16GHz).
Specification
Both of these models come in 1 Form C (SPDT
Form). They also come with two control voltage
options; 5Vdc and 12Vdc. The Coil Operating Power
drawn from these voltages are as follows:
 RF121-5/GRF121-5: 410mW
 RF121-12/GRF121-12: 290mW
They both also have a fantastic switching time of
7ms; 2ms operation time and 5ms bounce time)
resulting in a fantastically fast EMR switching
function. Both have an operating temperature of
-55oC to +85oC but can be stored as high as +125oC.
These relays have been designed to provide a
practical standard and surface mount switching
solution with RF Performance and repeatability up
to 12GHz & 16GHz, respectfully. The
RF121/GRF121 improves on Teledyne Relays’
heritage of miniature RF relays by incorporating a
precision transmission line structure in the internal
construction of the contact system.
RF121
Both of these relays feature:
 High Repeatability
 Wide Bandwidth Performance
 Higher Isolation Between Each control and
Signal Paths
 High Resistance to Electrostatic Discharge
The GRF121 relays feature a unique ground shield
to facilitate surface mounting and to extend the
frequency range when compared to through-hole
solutions.
www.teledynerelays.com
Schematic Diagrams, Outline Drawings and Solder
Stencil
As can be seen on our datasheets, the electrical
schematic diagrams can be used to analyse how the
relay operates and the diagram gives detailed
information in regards to how this happens and
how to connect the relay.
It can be seen from the above diagram that the pin
options are very clear, the coil connections and the
earthing points of the relay.
Specifications are subject to change without notice
© 2016 Teledyne Relays
RF121/GRF121 - High Frequency Electro-Mechanical Relays (DC-12GHz & DC-16GHz)
TELEDYNE RELAYS – April, 2016. Cumbernauld, Scotland.
Below are two of the outline drawings of the
GRF121 with the inclusion of measurements in both
inches and millimetres.
Relay Performance
Below is the Insertion Loss curve for the GRF121
where it can be seen that these values are still very
good in the higher frequency range, especially at
the 16GHz region.
Eye Diagrams
Eye Diagrams are vital for the Digital Design
Engineer as they allow the designer to evaluate the
system; frequency, Bit-Rate, Signal to Noise Ratio,
Jitter, etc. On the GRF121 datasheet, we include
the Eye Diagrams at three different Bit Rates,
16Gbps, 28Gbps and 40Gbps, against a reference
eye diagram.
Below is a detailed Recommended Solder Stencil for
the Surface Mountable GRF121, also supplied on
the datasheet.
Below is the Voltage Standing Wave Ratio (VSWR)
graph and, again, it can be seen that this relay still
performs excellently in the higher frequency band.
www.teledynerelays.com
Specifications are subject to change without notice
© 2016 Teledyne Relays
RF121/GRF121 - High Frequency Electro-Mechanical Relays (DC-12GHz & DC-16GHz)
TELEDYNE RELAYS – April, 2016. Cumbernauld, Scotland.
Other Information
Due to the excellent high frequency handling
capabilities of this switch, design engineers looking
to design systems which previously used coaxial
switches can now look to minimise these designs
with the use of the RF121 and the GRF121. This
mean smaller systems with the same, if not better,
performance.
The RF121 series will be offered with gold plated
leads (/G option), solder dipped leads (/Q option,
Sn60/Pb40) and RoHS compliant (/R option,
Sn99.3/Cu0.7).
Applications Information
These relays are designed for use in the following
technologies
 RF Attenuators
 RF Switch Matrices
 High Frequency Spread Spectrum Radios
 ATE
 Any system where dependable high
frequency signal fidelity and performance
up to 16GHz, 40Gbps is desired.
Datasheets
The datasheets for both of these relays, as well as
the datasheets for all of our Electro-Mechanical
Relays, can be found here at
http://www.teledynerelays.com/electrorelays.asp
Need More Information?
If any more information is required, please feel free
to contact our Field Applications Engineer, Sean
Smith, on sean.smith@Teledyne.com, visiting
www.teledynerelays.com, where our datasheets
are readily available, or by calling +44 (0) 1236 453
124 and speaking with one of our team.
For the latest news releases, visit
www.teledynerelays.com/newsrelease.asp.
Teledyne Relays, a Business Unit of Teledyne
Reynolds Inc., has been the world’s innovative
leader in manufacturing ultraminiature,
hermetically sealed, electromechanical and solidstate switching products for over 50 years. The
company’s comprehensive product line meets a
wide range of requirements for industrial,
commercial, military and aerospace uses.
Teledyne Relays
9-13 Napier Wardpark North Industrial Estate
Cumbernauld
Scotland
UK
G68 0EF
www.teledynerelays.com
Email: Sales.Europe@Teledyne.com
www.teledynerelays.com
Specifications are subject to change without notice
© 2016 Teledyne Relays