ECS-400-9-36B-CKY-TR

Crystal, ECX-2236B Series, 40 MHz, 10 ppm, 10 ppm, 9 pF

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Manufacturer: ECS INC INTERNATIONAL
Product type: Crystals
SVHC: No SVHC (04-Feb-2026)
Frequency Nom: 40MHz
Product Range: 0
Load Capacitance: 9pF
Crystal Frequency: 40MHz
Crystal Case / Package: SMD, 2.5mm x 2mm
Frequency Stability + / -: 10ppm
Frequency Tolerance + / -: 10ppm
Operating Temperature Max: 85°C
Operating Temperature Min: -30°C

Delivery and price
Units per pack	500
Price	0.24 €
Current stock	10+
Lead time	30 days

Datasheet

## ee —=&xo~™ Robs 

## **ECX-2236B SMD CRYSTAL** 

The miniature ECX-2236B is a compact SMD Crystal that offers low aging of ±1 ppm first year. The industry standard 2.5 x 2.0 x 0.55 mm ceramic package is ideal for wireless applications. 

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## **ECX-2236B SMD CRYSTAL** 

- Low Profile 

- 2.5 x 2.0 mm Footprint 

- Extended Temp. Range 

- IOT/Wearable applications 

## **DIMENSIONS (mm)** 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**PARAMETERS**|**CONDITIONS**|**ECX-2236B**|**ECX-2236B**|**ECX-2236B**|**UNITS**|
|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**||
|Frequency<br>~~ee~~|~~ee~~|12.000<br>~~ee~~|~~ee~~|50.000<br>~~ee~~|MHz<br>~~ee~~|
|Mode of Oscillation<br>~~ee~~<br>~~a~~|Fundamental<br>~~ee~~<br>~~ee eee~~|~~ee~~<br>~~eee~~|~~ee~~<br>~~eee~~|~~ee~~<br>~~eee~~|~~ee~~<br>~~eee~~|
|Frequency Tolerance*<br>~~a~~|@ +25°C<br>(C option)<br>~~ee eee~~<br>~~ee~~|~~eee~~<br>~~ee~~|~~eee~~<br>~~ee~~|± 10<br>~~eee~~<br>~~eee~~|ppm<br>~~eee~~<br>~~eee~~|
|Frequency Stability*<br>~~a~~<br>~~rr~~|-30 ~ +85°C<br>(KY option)<br>~~ee eee~~<br>~~rr~~<br>~~ee~~|~~eee~~<br>~~rr~~<br>~~ee~~|~~eee~~<br>~~rr~~<br>~~ee~~|± 10<br>~~eee~~<br>~~rr~~<br>~~eee~~|ppm<br>~~eee~~<br>~~rr~~<br>~~eee~~|
|Shunt Capacitance<br>~~ee~~<br>~~a~~|Co<br>~~ee ~~<br>~~ee~~<br>|~~ee ~~<br>~~ee~~<br>|~~ee ~~<br>~~ee~~<br>|3<br> ~~eee~~<br>~~ee~~<br>|pF<br>~~eee~~<br>~~ee~~<br>|
|Load Capacitance<br>~~a~~|Specifyin P/N<br>||8<br>||pF<br>|
|Drive Level<br>~~aee~~|DL<br>~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~|100<br>~~ee~~<br>~~eee~~|μW<br>~~ee~~<br>~~eee~~|
|Operating Temperature*<br>~~ee~~|Topr<br>(Y option)<br>~~ee~~<br>~~ee~~<br>~~ee~~|-30<br>~~ee~~<br>~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~<br>~~ee~~|+85<br>~~ee~~<br>~~eee~~<br>~~ee~~|°C<br>~~ee~~<br>~~eee~~|
|Storage Temperature<br>~~es~~|Tstg<br>~~ee ~~<br>~~es~~<br>~~ee~~|-55<br> ~~ee ~~<br>~~es~~<br>~~ee~~|~~ee ~~<br>~~es~~<br>~~ee~~|+125<br> ~~eee~~<br>~~es~~<br>~~ee~~|°C<br>~~eee~~<br>~~es~~|
|Aging (First Year)|@ +25°C ±3°C<br>~~ee~~|~~ee~~|~~ee~~|±1<br>~~ee~~|ppm|



**==> picture [398 x 65] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pad Connections<br>8 Hot tt 1  In/Out<br>2  Gnd<br>3  Out/In<br>4  Gnd<br>**----- End of picture text -----**<br>


_**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-240-8-36B-CKY-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||||
|8 = 8 pF<br>10=10 pF<br>-36B =<br>ECX-2236B<br>240 = 24.000  MHz<br>See P/N Guide<br>ECS<br>~~SIDI~~||||||||||Blank = Std<br>A = ± 25ppm<br>J = ± 20ppm<br>R = ± 15ppm||Blank= Std<br>D= ±100 ppm<br>E = ± 50 ppm<br>G = ± 30 ppm||Blank= Std<br>L =   -10 ~ +70°C<br>M = -20 ~ +70°C<br>Y  =  -30 ~ +85°C||||TR =1K<br>TR3=3K<br>Qty/Reel|Qty/Reel|
|||||||||||C = ± 10ppm||H = ± 25 ppm||N =  -40 ~ +85°C||||||
|* Specify available options in P/N.||||||||||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.|||||||W = ±15 ppm †<br>K = ± 10 ppm †||S =  -40 ~ +125°C<br>U =  -55 ~ +125°C||||Rev.2019||



## **ECX-2236B 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_

Updated at June 5, 2026

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