# Crystal, ECX-1247B2 Series, 40 MHz, 10 ppm, 10 ppm, 8 pF

![Product image](https://novapart.co/image/farnell:4757393RL/)

**URL**: https://novapart.co/products/ECS-400-8-47B2-CKM-TR/crystal-ecx-1247b2-series-40-mhz-10-ppm-8-pf
**SKU**: ECS-400-8-47B2-CKM-TR
**Manufacturer**: ECS INC INTERNATIONAL
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.2150
**Stock**: 1000+
**Lead Time**: 120 days (indicative)

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4757393RL/)

## **ECX-1247B2 SMD CRYSTAL** 

The sub miniature ECX-1247B2 is a very compact SMD Crystal. The 1.6 x 1.2 x 0.3 mm ceramic package is ideal for RFID, NFC, WiFi, RF, Video, and Audio applications. 

**Request a Sample** 

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ECX-1247B2 SMD CRYSTAL<br>**----- End of picture text -----**<br>


- Low 1[st] Year Aging 

- 1.6 x 1.2 mm Footprint 

- Extended Temp. Range Option 

- RoHS Compliant 

## **DIMENSIONS (mm)** 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**PARAMETERS**|**CONDITIONS**|**ECX-1247B2**|**ECX-1247B2**|**ECX-1247B2**|**UNITS**|
|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**||
|Frequency||24.000||80.000|MHz|
|Mode of Oscillation|Fundamental|||||
|FrequencyTolerance*<br>~~a~~|@ +25°C<br>~~Ges~~|~~I~~||± 7|ppm|
|Frequency Stability*<br>~~a~~<br>~~a~~|-30 ~ +85°C<br>~~Ges~~|~~I~~<br>~~tn~~|~~I~~|± 10|ppm|
|Shunt Capacitance<br>~~a~~<br>~~Gs~~<br>~~a~~<br>~~ee~~|Co<br>~~Ges ~~<br>~~Gs~~<br>~~Ge~~<br>|~~I~~<br>~~Gs~~<br>~~tn~~<br>|~~Gs~~<br>~~I~~|3<br>~~Gs~~|pF<br>~~Gs~~|
|Load Capacitance<br>~~a~~<br>~~ee~~|Specifyin P/N<br>~~Ge~~<br>|~~tn ~~<br>|8<br> ~~I~~||pF|
|Drive Level<br>~~ee~~<br>~~ee~~|DL<br>~~Ge~~<br>~~**Gn**~~|~~**Gn**~~||100|μW|
|Operating Temperature*<br>~~ee~~<br>~~ee~~<br>~~a~~|Topr<br>~~Ge~~<br>~~**Gn**~~<br>~~Ps~~|-40<br>~~**Gn**~~<br>~~Ge~~|~~ns~~|+85<br>~~ns~~|°C|
|Storage Temperature<br><br>~~ee~~<br>~~a~~<br>~~a~~|Tstg<br>~~**Gn**~~<br>~~Ps~~<br>~~Gs~~|-40<br>~~**Gn**~~<br>~~Ge~~<br>~~es~~|~~ns~~|+125<br>~~ns~~|°C|
|Aging (First Year)<br>~~a~~<br>~~a~~|@ +25°C ±3°C<br>~~Ps ~~<br>~~Gs~~|~~Ge~~<br>~~es~~|~~ns~~|±2<br>~~ns~~|ppm|



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

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

|||||**Frequency (MHz)         ESR Ω Max.**|
|---|---|---|---|---|
|||||24.000 ~ 29.999<br>100|
|||||30.000 ~ 39.999<br>80|
|||||40.000 ~ 60.000<br>60|
|||||60.100 ~ 80.000<br>40|
|**Pad Connections**<br>1<br>In/Out<br>2<br>Gnd<br>3<br>Out/In<br>4<br>Gnd<br>~~==~~||||**_Figure 2)_**_Suggested land_<br>i<br>\E<br>“ =<br>a|



## **PART NUMBERING GUIDE:  Example ECS-320-8-47B2-7KY-TR** 

||**ECS -  FREQUENCY ABBREVIATION**|**LOAD**<br>**CAPACITANCE**|**PACKAGE**|**AVAILABLE OPTIONS**<br>Tolerance           Stability                 Temp<br>Range|**PACKAGING**|**PACKAGING**|
|---|---|---|---|---|---|---|
|ECS||||||TR =<br>Tape<br>& Reel<br>3K/Reel|



## **ECX-1247B2 SMD CRYSTAL** 

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

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|**SOLDER PROFILE**||||||
|---|---|---|---|---|---|
|||||||
|Peak solder Temp+260°C Max 10 sec Max.|+260°C Max 10 sec Max.|+260°C Max 10 sec Max.||**DEVELOPED FREQUENCIES**||
|2 Cycles Max.||||Abbreviation|Frequency (MHZ)|
|MSL 1,Lead Finish Au||||240|24.000|
|||||245.7|24.576|
|||||250|25.000|
||:|»<br>101 sec.||260|26.000|
|+260“CPeak_———>||||320|32.000|
|||||360|36.000|
|+220 °C||||400|40.000|
|||||480|48.000|
|||||500|50.000|



_**Figure 1)** Suggested Reflow Profile_ 



## Links

- [View this product on Novapart](https://novapart.co/products/ECS-400-8-47B2-CKM-TR/crystal-ecx-1247b2-series-40-mhz-10-ppm-8-pf)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ecs-inc-international/ecs-400-8-47b2-ckm-tr/crystal-40mhz-8pf-smd-1-6mm-x/dp/4757393RL)
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