ECS-400-10-37B-CKY-TR3

## RoHS 

The sub miniature ECX-1637B is a very compact SMD Crystal. The 2.0 x 1.6 x 0.45 mm ceramic package is ideal for wireless applications. 

**ECX-1637B SMD CRYSTAL** | **Request a Sample** J | 

## **ECX-1637B SMD CRYSTAL** 

- Low 1[st] Year Aging ±1 ppm Max. 

- 2.0 x 1.6 mm Footprint 

- Extended Temp. Range Option 

- RoHS Compliant 

## **DIMENSIONS (mm)** 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**PARAMETERS**|**CONDITIONS**|**ECX-1637B**|**ECX-1637B**|**ECX-1637B**|**UNITS**|
|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**||
|Frequency<br>~~ee~~|~~ee~~|16.000<br>~~ee~~|~~ee~~|50.000<br>~~ee~~|MHz<br>~~ee~~|
|Mode of Oscillation<br>~~ee~~|Fundamental<br>~~ee~~|~~ee~~|~~ee~~|~~ee~~|~~ee~~|
|Frequency Tolerance*|@ +25°C<br>(C option)|||± 10|ppm|
|Frequency Stability*|-30 ~ +85°C<br>(KY option)|||± 10|ppm|
|Shunt Capacitance<br>~~ee~~|Co<br>~~ee~~|~~ee~~|~~ee~~|3<br>~~ee~~|pF<br>~~ee~~|
|Load Capacitance<br>~~Re~~|Specifyin P/N<br>~~Re~~|~~Re~~|8<br>~~Re~~|~~Re~~|pF<br>~~Re~~|
|Drive Level<br>~~ee~~|DL<br>~~ee~~|~~ee~~|~~ee~~|100<br>~~ee~~|μW<br>~~ee~~|
|Operating Temperature*|Topr<br>(Y option)|-30||+85|°C|
|Storage Temperature|Tstg|-55||+125|°C|
|Aging (First Year)|@ +25°C ±3°C|||±1|ppm|



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



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

_**Figure 2)** Suggested land_ 

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

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

|**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**|**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||||
||||||||||||||||||||||||||
|ECS|||240 = 24.000  MHz||||8 = 8 pF||-37B =||||Blank = Std||||Blank= Std||Blank= Std||||TR =1K||
||||See P/N Guide||||10 = 10 pF||ECX-1637B||||A = ± 25ppm||||D= ±100 ppm||L =   -10 ~ +70°C||||TR3=3K||
||||||||S=Series||||||J = ± 20ppm<br>R = ± 15ppm||||E = ± 50 ppm<br>G = ± 30 ppm||M = -20 ~ +70°C<br>Y  =  -30 ~ +85°C||||Qty/Reel|Qty/Reel|
||||||||||||||C = ± 10||C = ± 10ppm||H = ± 25 ppm||N =  -40 ~ +85°C||||||
|* Specify available options in P/N.|* Specify available options in P/N.||||||||||||7 = ± 7 ppm|7 = ± 7 ppm|||T = ± 20 ppm †||P =  -40 ~ +105°C||||||
|† Contact ECS for availability over extended temp range.|† Contact ECS for availability over extended temp range.||† 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.2020||



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

## **ECX-1637B SMD CRYSTAL** 

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

**SOLDER PROFILE** Peak solder Temp +260°C Max 10 sec Max. 2 Cycles Max. MSL 1, Lead Finish Au 

_**Figure 1)** Suggested Reflow Profile_