ECS-384-10-37-CKM-TR

## note 

The sub miniature ECX-1637 is a very compact SMD Crystal.  The 2.0 x 1.6 x 0.45 mm ceramic package is ideal for LoRa WAN, wireless, cellular, and high density applications. 

## **ECX-1637 SMD CRYSTAL** 

**Request a Sample** 

## **ECX-1637 SMD CRYSTAL** 

- Low Profile 

- 2.0 x 1.6 mm Footprint 

- Extended Temp. Range Option 

- RoHS Compliant 

## **DIMENSIONS (mm)** 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**PARAMETERS**|**CONDITIONS**|**ECX-1637**|**ECX-1637**|**ECX-1637**|**UNITS**|
|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**||
|Frequency<br>~~a~~|~~a~~|16.000<br>~~a~~|~~a~~|80.000<br>~~a~~|MHz<br>~~a~~|
|Mode of Oscillation<br>~~a~~|Fundamental<br>~~a~~|~~a~~|~~a~~|~~a~~|~~a~~|
|FrequencyTolerance*<br>~~SO~~|@ +25°C<br>~~SO~~|~~SO~~|~~SO~~|± 50<br>~~SO~~|ppm<br>~~SO~~|
|Frequency Stability*<br>~~OO~~|-20 ~ +70°C<br>~~OO~~|~~OO~~|~~OO~~|± 50<br>~~OO~~|ppm<br>~~OO~~|
|Shunt Capacitance<br>~~a~~|Co|||5|pF|
|Load Capacitance<br>~~So~~|Specifyin P/N<br>~~So~~|~~So~~|8<br>~~So~~|~~So~~|pF<br>~~So~~|
|Drive Level<br>~~a~~|DL|||100|μW|
|Operating Temperature*<br>~~a~~|Topr|-20||+70|°C|
|Storage Temperature<br>~~SO~~|Tstg<br>~~SO~~|-40<br>~~SO~~|~~SO~~|+85<br>~~SO~~|°C<br>~~SO~~|
|Aging (First Year)|@ +25°C ±3°C|||±5|ppm|



|**Frequency (MHz)         ESR Ω Max.**|**Frequency (MHz)         ESR Ω Max.**|
|---|---|
|16.000 ~ 23.999|100|
|24.000 ~ 25.999|80|
|26.000 ~ 39.999|60|
|40.000 ~ 80.000|50|



_**Figure 1)** Top, Side, and Bottom_ 

Crystal is symmetrical, pad 1 & 3 are interchangeable. Chamfer on the bottom pad has no electrical significance. 

|**Pad Connections**|**Pad Connections**|
|---|---|
|1|In/Out|
|2|Gnd|
|3|Out/In|
|4|Gnd|



_**Figure 2)** Suggested land_ 

## **PART NUMBERING GUIDE:  Example ECS-240-8-37-TR** 

|**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**||**LOAD**||||**PACKAGE**|**PACKAGE**|||**AVAILABLE OPTIONS**|**AVAILABLE OPTIONS**|**AVAILABLE OPTIONS**||**PACKAGING**|**PACKAGING**|**PACKAGING**||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||**CAPACITANCE**||||||Tolerance           Stability                 Temp Range|||Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range||||
|||||||||||||||||||||
|240 = 24.000  MHz<br>ECS||||8 = 8 pF|||-37 =|||Blank = Std||Blank= Std||Blank= Std||||TR =||
|See P/N Guide||||10 = 10 pF<br>S=Series||ECX-1637||||A = ± 25ppm<br>J = ± 20ppm<br>R = ± 15ppm<br>C = ± 10ppm||D= ±100 ppm<br>E = ± 50 ppm<br>G = ± 30 ppm<br>H = ± 25 ppm||L =   -10 ~ +70°C<br>M = -20 ~ +70°C<br>Y  =  -30 ~ +85°C<br>N =  -40 ~ +85°C||||Tape<br>& Reel<br>1K/Reel||
|* Specify available options in P/N.||||||||||||T = ± 20 ppm †||P =  -40 ~ +105°C||||||
|† Contact ECS for availability over extended temp range.||||† Contact ECS for availability over extended temp range.||||||||W = ±15 ppm †<br>K = ± 10 ppm †||S =  -40 ~ +125°C<br>U =  -55 ~ +125°C||||Rev.2017||



* Specify available options in P/N. † Contact ECS for availability over extended temp range. 

## **ECX-1637** RoHS COMPLIANT **SMD CRYSTAL** 

## **POCKET TAPE DIMENSIONS (mm)** 

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||||||
|---|---|---|---|---|
|SOLDER PROFILE|
|Peak solder Temp +260°C Max 10 sec Max.|DEVELOPED FREQUENCIES|
|2 Cycles Max.|Abbreviation|Frequency|(MHZ)|
|MSL 1, Lead Finish Au|160|16.000|
|200|20.000|
|240|24.000|
|,|101|sec.|260|26.000|
|(°c)|+260 “CPeak_|~*~|270|27.000|
|300|30.000|
|320|32.000|
|+220|°C|
|360|36.000|
|400|40.000|
|2|+170210|°C|
|3|||| —|Son sec.|

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_**Figure 1)** Suggested Reflow Profile_