CRF03-1AS

**MEDER electronic** 

## **CRF Series** 

7 GHz High Frequency Reed Relay for 50 Ω Impedance 

## **DESCRIPTION** 

## **FEATURES** 

- 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 

- 

The MEDER CRF Reed Relay Series 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. 

This Relay has 1 µ V 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. 

- Ability to switch fast pulses with rise times of 40  pico seconds or less 

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- Available with BGA 

## **APPLICATIONS** 

- Internal magnetic shield standard 

- Very low profile 

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- Gold plated leads for high conductivity RF path 

- Low thermal offset typical 1 µV 

- TCE matching of all internal components 

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- Insulation resistance typical 1014 ohms 

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- 3 Volt option available 

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- Test and measurement 

- Medical Equipment 

- Telecommunications 

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- High frequency applications 

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## **DIMENSIONS (Non-BGA)** 

*All dimensions in mm (inch) 

**PIN OUT** (Top View) 

## **PCB LAYOUT** 

## **PAD LAYOUT** 

(Bottom View) 

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3.60<br>[0.0472] _—_ 1.20 — [ØØ 0.0031]0.95 [0.1417] — [0.0197]0.50<br>[0.0276]0.70 10x R0.475[0.187] {|—<br>1.20<br>[0.0472]<br>0.95 3.125<br>[0.0374] [0.123]<br>a [0.378]9.60 e |<br>4.40<br>[0.1732] 1.45 [0.0571]<br>2.20 [0.0866] 1.475 [0.0581]<br>0.925 [0.0364]<br>**----- End of picture text -----**<br>


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**134** 

**CRF Series** 

**MEDER electronic** 

7 GHz High Frequency Reed Relay for 50 Ω Impedance 

## **DIMENSIONS (with BGA)** 

*All dimensions in mm (inch) 

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**PIN OUT** (Top View) 

## **PAD / PCB LAYOUT** 

(Bottom View) 

## **POST REFLOW** 

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Höhe: max.<br>**----- End of picture text -----**<br>


## **ORDER INFORMATION** 

## Part Number Example 

CRF05 - 1AS 

**05** is the nominal voltage **1A** is the contact form **S** is the solder ball option 

|**ATION**||||
|---|---|---|---|
|Series|Nominal<br>Voltage|Contact<br>Form|Option|
|CRF|05-|1A|X|
|Options|||S*|
|* Solder Ball Option (non-BGA part number is CRF05-1A)||||



## **COIL DATA** 

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Contact  Switch  Coil Coil Pull-In Drop-Out Nominal<br>Form Model Voltage Resistance Voltage Voltage coil Power<br>VDC Ω VDC VDC mW<br>All Data<br>at 20 °C * Nom. Max. Min. Typ. Max. Max. Min. Typ.<br>1A 80 5 7.5 135 150 165 3.75 0.75 167<br>1A 80 3 5 63 70 77 2.25 0.45 129<br>* the pull-in / drop-out voltages and coil resistance will change at the rate 0,4% per  [o] C<br>**----- End of picture text -----**<br>


www.meder.com 

**135** 

**CRF Series** 

**MEDER electronic** 

7 GHz High Frequency Reed Relay for 50 Ω Impedance 

## **RELAY DATA** 

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Switch Model  → Contact  80<br>All Data at 20° C<br>Contact Form  → Form A<br>Contact Ratings Conditions Min. Typ. Max. Units<br>Contact Ratings Any DC combination of V & A not to exceed their individual max.‘s. 10 W<br>Switching Voltage DC or peak AC 170 V<br>Switching Current DC or peak AC 0.5 A<br>Carry Current DC or peak AC 0.5 A<br>Bulk Resistance Through all plated material on  200 350 mΩ<br>substrate<br>Static Contact Resistance w/ 0.5 V & 50 mA  75 100 mΩ<br>Dynamic Contact Resistance Measured w/ 0.5 V & 50mA 100 150 mΩ<br>Insulation Resistance Across Contact 10 [10] 10 [12]<br>Ω<br>(100 Volts applied) Contact to coil and shield  10 [13] 10 [14]<br>Across Contact 210<br>Breakdown Voltage Coil to contact 1500 VDC<br>Operate Time incl. Bounce Measured w/ nominal voltage 0.1 ms<br>Release Time No coil suppression 0.02 ms<br>Across Contact 0.1<br>Capacitance (@ 10 kHz) Contact to coil and shield  0.7 pF<br>Life Expectancies<br>10 [6]<br>Switching 5 V - 10mA DC <10 pF stray cap. 1000<br>Cycles<br>For other load requirements, see the life test section on P. 120.<br>Environmental Data<br>Shock Resistance 1/2 Sine wave duration for 11 ms 50 g<br>Vibration Resistance From 10 - 2000 Hz 10 g<br>Ambient Temperature 10  [o] C/ minute max. allowable -40 125 oC<br>Storage Temperature 10  [o] C/ minute max. allowable -55 125 oC<br>Soldering Temperature 5 sec. dwell 260 oC<br>Material of Case Themoset / Ceramic<br>Material of pads Au plated<br>**----- End of picture text -----**<br>


www.meder.com 

**136** 

**MEDER electronic** 

**CRF Series** 

7 GHz High Frequency Reed Relay for 50 Ω Impedance 

## **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._ 

## **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 referenced 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._ 

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**137** 

**MEDER electronic** 

## **CRF Series** 

## 7 GHz High Frequency Reed Relay for 50 Ω Impedance 

## **Return Loss:** 

## **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_ 

## **Smith Chart:** 

- _2 - Open Contacts_ 

- _3 - Close Contacts_ 

- _4 - Closed Contacts - Shorted_ 

- _5 - Closed Contacts - 50 Ohm_ 

/\ 

_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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**138**