134
MEDER electronic
www.meder.com
CRF Series
1.20
0.70
9.60
2.20
4.40
0.50
3.125
3.60
0.95
1.20
10x R0.475
Ø 0.95
[0.187]
[0.1732]
[0.0866]
[0.0374]
[0.378]
[0.123]
[0.0472]
[0.0472]
0.925
[0.0364]
1.475
[0.0581]
1.45
[0.0571]
[0.0197]
[0.1417]
[0.0276]
[Ø 0.0031]
7 GHz High Frequency Reed
Relay for 50 Ω Impedance
Ceramic / thermoset molded package
Patent pending
Smallest in the industry
No lead frame surface mount design eliminates
skewing of leads and coplanarity issues
Minimum path length for RF
Up to 7 GHz switching frequencies
Ability to switch fast pulses with rise times of 40 pico
seconds or less
Available with BGA
Internal magnetic shield standard
Very low prole
Gold plated leads for high conductivity RF path
Low thermal offset typical 1 µV
TCE matching of all internal components
Insulation resistance typical 1014 ohms
3 Volt option available
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FEATURES
DESCRIPTION
Test and measurement
Medical Equipment
Telecommunications
High frequency applications
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The MEDER CRF Reed Relay Series is a low-prole
device made with a ceramic case that exactly matches
the thermal coefcient of expansion of the Reed Switch
glass and the reed lead to eliminate any potential
packaging stress. Capable of switching up to 7 GHz
with <40 ps rise times for digital operations, this leadless
50 Ohm reed relay is the smallest in the industry and
switches into the billions of operations.
This Relay has 1 µV typical thermal offset voltage.
Measuring only 8.6 mm x 4.4 mm x 3.4 mm, the leadless
design eliminates skewing of leads and coplanarity
issues.
APPLICATIONS
DIMENSIONS (Non-BGA)
*All dimensions in mm (inch)
PIN OUT
(Top View)
PCB LAYOUT PAD LAYOUT
(Bottom View)
135
MEDER electronic
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Höhe: max.
CRF Series
7 GHz High Frequency Reed
Relay for 50 Ω Impedance
DIMENSIONS (with BGA)
*All dimensions in mm (inch)
PIN OUT
(Top View)
POST REFLOW
PAD / PCB LAYOUT
(Bottom View)
ORDER INFORMATION
Part Number Example
CRF05 - 1AS
05 is the nominal voltage
1A is the contact form
S is the solder ball option
Series Nominal
Voltage
Contact
Form
Option
CRF 05- 1A X
Options S*
* Solder Ball Option (non-BGA part number is CRF05-1A)
COIL DATA
Contact
Form
Switch
Model
Coil
Voltage
Coil
Resistance
Pull-In
Voltage
Drop-Out
Voltage
Nominal
coil Power
All Data
at 20 °C *
VDC ΩVDC VDC mW
Nom. Max. Min. Typ. Max. Max. Min. Typ.
1A 80 5 7.5 135 150 165 3.75 0.75 167
1A 80 3 5 63 70 77 2.25 0.45 129
* the pull-in / drop-out voltages and coil resistance will change at the rate 0,4% per oC
136
MEDER electronic
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CRF Series
7 GHz High Frequency Reed Relay
for 50 Ω Impedance
RELAY DATA
All Data at 20° C Switch Model →
Contact Form →
Contact 80
Form A
Contact Ratings Conditions Min. Typ. Max. Units
Contact Ratings Any DC combination of V & A not to
exceed their individual max.‘s. 10 W
Switching Voltage DC or peak AC 170 V
Switching Current DC or peak AC 0.5 A
Carry Current DC or peak AC 0.5 A
Bulk Resistance Through all plated material on
substrate 200 350 mΩ
Static Contact Resistance w/ 0.5 V & 50 mA 75 100 mΩ
Dynamic Contact Resistance Measured w/ 0.5 V & 50mA 100 150 mΩ
Insulation Resistance
(100 Volts applied)
Across Contact
Contact to coil and shield
1010
1013
1012
1014 Ω
Breakdown Voltage Across Contact
Coil to contact
210
1500 VDC
Operate Time incl. Bounce Measured w/ nominal voltage 0.1 ms
Release Time No coil suppression 0.02 ms
Capacitance (@ 10 kHz) Across Contact
Contact to coil and shield
0.1
0.7 pF
Life Expectancies
Switching 5 V - 10mA DC <10 pF stray cap. 1000 106
Cycles
For other load requirements, see the life test section on P. 120.
Environmental Data
Shock Resistance 1/2 Sine wave duration for 11 ms 50 g
Vibration Resistance From 10 - 2000 Hz 10 g
Ambient Temperature 10 oC/ minute max. allowable -40 125 oC
Storage Temperature 10 oC/ minute max. allowable -55 125 oC
Soldering Temperature 5 sec. dwell 260 oC
Material of Case Themoset / Ceramic
Material of pads Au plated
137
MEDER electronic
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CRF Series
7 GHz High Frequency Reed Re-
lay for 50 Ω Impedance
Insertion Loss:
Insertion loss tested to 7 GHz for the CRF Reed Relay. Hori-
zontal full scale: 7.0 GHz. Vertical scale: 10 dB/div referenced
from the 0 mark.
Copper Wire Insertion Loss:
Insertion loss tested to 7 GHz for the CRF Reed Relay but
with the internal Reed Switch replaced with a bare copper wire.
Horizontal full scale: 7.0 GHz. Vertical scale: 10 dB/div refer-
enced from the 0 mark.
VSWR:
Voltage Standing Wave Ratio (VSWR) tested to 6.5 GHz for
the CRF Reed Relays. Horizontal full scale: 6.5 GHz. Vertical
scale: 1.0/div referenced from the bottom line 1.0 mark.
Isolation:
Isolation tested to 7 GHz for the CRF Reed Relay. Horizontal
full scale: 7.0 GHz. Vertical scale: 10 dB/div referenced from
the 0 mark.
138
MEDER electronic
www.meder.com
CRF Series
7 GHz High Frequency Reed Relay
for 50 Ω Impedance
Return Loss:
Return loss tested to 6.5 GHz for the CRF Reed Relay. Hori-
zontal full scale: 6.5 GHz. Vertical scale: 10 dB/div referenced
from the 0 mark.
Characteristic Impedance:
Represents the characteristic impedance going through the
CRF Reed Relay. Waves 1 through 5 depict calibration points.
Horizontal full scale: 750 ps. Vertical scale: 150 mUnit/div
referenced from the 0 unit mark. The vertical scale measures
the reection coefcient.
1 - Short Before Relay
2 - Open Contacts
3 - Close Contacts
4 - Closed Contacts - Shorted
5 - Closed Contacts - 50 Ohm
Smith Chart:
Shows a Smith Chart plotted for frequencies to 4 GHz. The
second dotted circle starting from the right is the 50 Ohm im-
pedance point.