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MEDER electronic
DESCRIPTION
The MEDER CRF Series Reed Relay is a low-profile device made with a ceramic case that exactly matches the thermal coefficient 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. Capable of withstanding reflow-soldering operations up to 260C, the relay uses no internal solder and has 1 V typical thermal offset. Measuring only 8.6 mm x 4.4 mm x 3.4 mm, the leadless design eliminates skewing of leads and co-planarity issues.
CRF Series
7 GHz High Frequency Reed Relay for 50 Impedance
FEATURES
* Ceramic / thermoset molded package * Patent pending * Smallest in the industry * No lead frame surface mount design eliminates skewing of leads and coplanarity issues * No internal solder connections * 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 profile * Gold plated leads for high conductivity RF path * Low thermal offset typical 1 V * TCE matching of all internal components * Insulation resistance typical 1014 ohms * 3 Volt option available
APPLICATIONS
* Test and measurement * Medical Equipment * Telecommunications * High frequency applications
DIMENSIONS (Non-BGA)
*All dimensions in mm (inches)
PIN OUT
(Top View)
PCB LAYOUT
[0.0472]
PAD LAYOUT
(Bottom View)
1.20
O 0.95 [O 0.0031]
3.60 [0.1417] 0.50 [0.0197]
4.40 [0.1732] 2.20 [0.0866]
[0.0472]
0.95 [0.0374] 9.60 [0.378]
3.125 [0.123]
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0.925 [0.0364]
[0.0581]
1.475
1.20
1.45 [0.0571]
0.70 [0.0276]
10x R0.475 [0.187]
251
CRF Series
7 GHz High Frequency Reed Relay for 50 Impedance
MEDER electronic
DIMENSIONS (with BGA)
*All dimensions in mm (inches)
PIN OUT
(Top View)
PAD / PCB LAYOUT
(Bottom View)
POST REFLOW
Height: max.
ORDER INFORMATION
Series CRF Options * Solder Ball Option (non-BGA part number is CRF05-1A) Nominal Voltage 05Contact Form 1A Option
Part Number Example CRF05 - 1AS 05 is the nominal voltage 1A is the contact form S is the solder ball option
X
S*
COIL DATA
Contact Form Switch Model Coil Voltage VDC Nom. 5 Max. 7.5 Min. 135 Coil Resistance Pull-In Voltage VDC Max. 165 Max. 3.75 Drop-Out Voltage VDC Min. 0.75 Nominal coil Power mW Typ. 167
All Data at 20 C * 1A 80
Typ. 150
* the pull-in / drop-out voltages and coil resistance will change at the rate 0,4% per oC
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252
MEDER electronic
CRF Series
7 GHz High Frequency Reed Relay for 50 Impedance
RELAY DATA
All Data at 20 C Contact Ratings
Contact Ratings Switching Voltage Switching Current Carry Current Bulk Resistance Static Contact Resistance dynamic Contact Resistance Insulation Resistance (100 Volts applied) Breakdown Voltage Operate Time incl. Bounce Release Time Capacitance (@ 10 kHz)
Switch Model --> Contact Form --> Conditions
Any DC combination of V & A not to exceed their individual max.`s.
Contact 80 Form A Min. Typ. Max. Units
10 170 0.5 0.5 200 75 100 10 1013
10
W V A A m m m VDC
DC or peak AC DC or peak AC DC or peak AC Through all plated material on substrate w/ 0.5 V & 50 mA Measured w/ 0.5 V & 50mA Across Contact Contact to coil and shield Across Contact Coil to contact Measured w/ nominal voltage No coil suppression Across Contact Contact to coil and shield 0.1 0.7
350 100 150
10 1014
12
210 1500 0.1 0.02
ms ms 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. 151.
Environmental Data
Shock Resistance Vibration Resistance Ambient Temperature Storage Temperature Soldering Temperature Material of Case Material of pads
1/2 Sine wave duration for 11 ms
50 10 -40 -55 125 125 260
g g
o o
From 10 - 2000 Hz 10 C/ minute max. allowable
o
C C C
10 oC/ minute max. allowable 5 sec. dwell Themoset / Ceramic Ag plated
o
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253
CRF Series
7 GHz High Frequency Reed Relay for 50 Impedance
MEDER electronic
VSWR:
Insertion Loss:
Insertion loss 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.
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.
Copper Wire Insertion Loss:
Isolation:
Insertion loss tested to 7 GHz for the CRFReed Relay but with the internal Reed Switch replaced with a bare copper wire. Horizontal full scale: 7.0 GHz. Vertical scale: 10 dB/div referenced from the 0 mark.
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.
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254
MEDER electronic
Return Loss:
CRF Series
7 GHz High Frequency Reed Relay for 50 Impedance
Characteristic Impedance:
Return loss tested to 6.5 GHz for the CRF Reed Relay. Horizontal full scale: 6.5 GHz. Vertical scale: 10 dB/div referenced from the 0 mark.
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 reflection coefficient. 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 impedance point.
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