RF180 Page SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE ©2003 TELEDYNE RELAYS
www.teledynerelays.com RF180/1203/Q1
RF & MICROWAVE
SERIES
RF180
MAGNETIC-LATCHING,
BROADBAND
RF RELAYS
DPDT
DESCRIPTION
The Series RF180 relay is an ultraminiature, hermetically
sealed, magnetic-latching relay featuring extremely low
intercontact capacitance for exceptional RF performance
over the full UHF spectrum. Its low profile height and .100"
grid spaced terminals make it ideal for applications where
extreme packaging density and/or close PC board spacing
are required.
The RF180 design has been optimized for use in RF
attenuators, RF switch matrices, and other applications
requiring magnetic latching, high isolation, low inser tion loss
and low VSWR.
Unique construction features and manufacturing techniques
provide high reliability and excellent robustness to
environmental extremes.
• All welded construction.
• Unique uniframe design provides high magnetic efficiency
and mechanical rigidity.
• High force/mass r atios for resistance to shock and vibration.
• Advanced cleaning techniques provide maximum
assurance of internal cleanliness.
• Gold-plated precious metal alloy contacts ensure reliable
d.c. switching from dry-circuit to 1/4 amp, as well as low
and stable insertion loss in RF applications.
The RF180 relay is ideally suited for applications where
power dissipation must be minimized. The relays can be
operated with a short-duration coil voltage pulse. After the
contacts have transferred, no coil power is required.
The magnetic-latching feature of the RF180 provides a
nonvolatile memor y capability, since the relays will not reset
upon removal of coil power.
PRINCIPLE OF OPERATION
Energizing Coil A produces a
magnetic field opposing the
magnetic field of the
permanent magnet in Circuit
A. As the net holding force
decreases, the attractive
force in the air gap of Circuit
B, which also results from the
magnetic field of the
permanent magnet, becomes
great enough to break the
armature free of Core A, and
snap it into a closed position against Core B.The armature remains in this
position upon remov al of pow er from Coil A, but will snap bac k into position
A upon energizing Coil B.Since operation depends upon cancellation of a
magnetic field, it is necessary to apply the correct polarity to the relay coils
as indicated on the relay schematic.
When latching relays are installed in equipment, the latch and reset coils
should not be pulsed simultaneously. Coils should not be pulsed with less
than rated coil voltage and the pulse width should be a minimum of three
times the specified operate time of the relay. If these conditions are not
followed, it is possible for the relay to be in the magnetic neutral position.
COIL A
SOFT IRON FRAME
SOFT IRON CORE A
MAGNETIC CIRCUIT A
MAGNETIC CIRCUIT B
PERMANENT MAGNET
COIL B
STATIONARY
CONTACT
MOVING
CONTACT
AIR GAP
ARMATURE
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient) Storage –65°C to +125°C
Operating –55°C to +85°C
Vibration
(General Note 1) 30 g’s to 3000 Hz
Shock
(General Note 1) 100 g’s,
6 msec, half-sine
Enclosure Hermetically sealed
Weight 0.10 oz. (2.9g) max.