MEDER electronic |
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REED RELAYS
REED SENSORS
REED SWITCHES
Reed Technology Solutions
Product Spotlight
Instrumentation Grade Reed Relays
FEATURES
•
Ability to switch up to 1 Amp
•
Carrying pulsed currents up to 5 Amps
•
Input/output dielectric voltages up to 4k VDC
•
Isolation greater than 1 x 10
14
Ohms
•
Long life with millions of reliable operations
•
Low offset voltages < 1 microvolt
•
Open state capacitance < 0.2 pF
•
Switch signals from DC up to 7 GHz
•
Switching voltages as high as 1k Volts
•
Hermetically sealed switches with epoxy
encapsulation
•
Dynamically tested contacts
CR Series
The CR series is our smallest and most versatile
instrument grade reed relay series. The CRF Series has a
flat insertion loss curve from DC up to 7 GHz, attained by
keeping the signal path as short as possible and using
an internal coaxial shield with a consistent 50 Ohm
impedance path. Not only is it excellent with RF signals,
but is also great for digital signals where the skew rates
or effects on the rise time of fast digital pulses is less than
40 picoseconds through the relay.
The epoxy over-molded ceramic package is very
rugged and has very good low thermal offset voltage
capability because of its excellent heat conducting
alumina substrate.
The ceramic substrate has leadless gold plated pads
making it ideal for surface mounting with no worry of
lead skewing or coplanarity issues.
DESCRIPTION
Today’s high tech electronic fields
continue to prosper with
innovative new products using
finer and finer integrations that
drive components smaller and
smaller. Whether the electronic
components are mounted on
PCBs, at the wafer level or the
finished component level, testing
these components will require
reed relays.
RELAY SERIES
CRF Reed Relays
MS RF Reed Relays
SIL HV Reed Relays
SIL RF Reed Relays
APPLICATIONS
Analyzers
Automated test equipment
Battery powered
Cable testers
Functional PCB testers
High voltage testers
Industrial
Integrated circuit testers
Low voltage scanners
Medical equipment testers
Multimeters
RF transmitters
Wafer testers
MARKETS
Telecommunications,
Test & Measurement
Switching technology offers
unparalleled features…
[Type text]
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REED RELAYS
REED SENSORS
REED SWITCHES
Reed Technolo
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Pro
duct Spotlight
CR Series continued…
The CR series is only 3.4 mm high, making it ideal for
very low profile environments. Because there is an
internal magnetic shield, the relays can be stacked very
close together without having to deal with magnetic
coupling effects between relays. This is the case whether
you are designing a two dimensional or three dimensional
relay matrix. A BGA option is offered for additional PCB
attach methods.
SIL RF Series
The SIL RF Series is configured in a standard SIL
through-hole package with UL certification. Its internal
coaxial shield offers a consistent 50 Ohm impedance path
for excellent RF characteristics at an economical cost.
The insertion loss is flat from DC to 1.5 GHz.
The SIL RF Series is capable of switching up to 15 watts
and voltages up to 200 Volts while providing over 1500
Volts isolation, switch to coil. The contacts can switch up
to 1.0 amp while maintaining a consistent 100 milli-ohm
on state resistance. Since it is in a standard SIL
package, its foot print is compatible with other sources.
Built-in diode suppression is another option.
SIL High Voltage/High Current Series
The SIL High Voltage/High Current Series was designed
primarily for use in automatic test systems, testing high
power MOS-FETs. These rugged semi conductors have
very high initial peak current capability. Having a reed
relay that can carry high current pulses for hundreds of
millions of operations is a critical requirement. This series
can switch up to 1000 volts and carry up to 5 amps for up
to 50 milli-second at a consistent repetition rate.
SIL High Voltage/High Current Series continued…
The relays can dielectrically hold off up to 4000 volts
across the contacts as well as between contacts and
coil. The relays have standard internal magnetic
shields for close stacking matrices.
MS RF Series
The low cost MS series is a mini SIL principally
designed for large, closely stacked matrices typically
used in functional PCB test systems. These relays
have a standard internal magnetic shield to support
the close stacking and avoid any magnetic
interference between relays.
Because of their relatively small size and short signal
path, the relays are capable of carrying signals up to 1
GHz by grounding the start wire of the coil. MS relays
are also capable of switching DC up to 10 Watts with
voltages up to 200 volts. One amp of current can be
switched with carry currents as high as 2 amps.
Summary
The specification chart below summarizes the primary
parameters, while detailed specifications can be
downloaded directly from our website:
www.meder.com
[Type text]
MEDER electronic |
www.meder.com | March, 2010 Page 3 of 3
REED RELAYS
REED SENSORS
REED SWITCHES
Reed Technolo
gy Solutions
Pro
duct Spotlight
Visit our website: www.meder.com
RELAY COMPARISON BETWEEN SERIES
All Data at 20° C
Relay Series
Unit
CRF CRR SIL RF
SIL HV
MS RF
Size Characteristics
Height Profile 3.4 3.4 7.8 8.13 6.8 mm
0.134 0.134 0.307 0.320 0.268 inches
Overall Length 8.6 8.6 19.8 24.13 15.2 mm
0.339 0.339 0.780 0.950 0.598 inches
DC Parameters
Rated Power (max.) Any DC combination of V & A not
to exceed their individual max.’s 10 10 15 10 10 W
Switching Voltage (max.) DC or peak AC 170 170 200 1000 200 V
Switching Current (max.) DC or peak AC 0.5 0.5 1.0 1.0 1.0 A
Carry Current (max.) DC or peak AC 0.5 0.5 1.25 2.5 2.0 A
Pulsed Carry Current 5 ms (max.) DC or peak AC 1.0 1.0 2.5 5.0 2.5 A
Insulation Resistance (typical) RH 45% 10
13
10
13
10
12
10
12
10
14
Ω
Breakdown Voltage (min.) Across contacts 210 210 250 4000 225 VDC
Breakdown Voltage (min.) Contacts to coil and/or shield 1500 1500 1500 4000 1500 VDC
Thermal Offset Voltage 1 1 15 20 15 µV
RF Characteristics
Capacitance Across contacts 0.2 0.2 0.2 0.2 0.2 pF
Capacitance Contacts to coil and/or shield 0.6 0.6 1.5 1.8 1.4 pF
Insertion Loss* (see graphs) -3dB drop off point 7 2
Λ
1.5 N/A 1.0
Λ
GHz
Isolation * (see graphs) -3dB drop off point 10 15
Λ
14 N/A 18 GHz
VSWR -3dB drop off point 1.6 1.4
Λ
1.5 N/A 1.35 GHz
Λ
Denotes start wire grounded
** The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. Consult
factory if more detail is required.
