# Crystal, ECX-34S Series, 32.768 kHz, 20 ppm, 12.5 pF

![Product image](https://novapart.co/image/farnell:3649604/)

**URL**: https://novapart.co/products/ECS-.327-12.5-34S-TR/crystal-ecx-34s-series-32768-khz-20-ppm-125-pf
**SKU**: ECS-.327-12.5-34S-TR
**Manufacturer**: ECS INC INTERNATIONAL
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.3670
**Stock**: 10+
**Lead Time**: 176 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Frequency Nom | 32.768kHz |
| Product Range | ECX-34S Series |
| Load Capacitance | 12.5pF |
| Crystal Frequency | 32.768kHz |
| Crystal Case / Package | SMD, 3.2mm x 1.5mm |
| Frequency Stability + / - | - |
| Frequency Tolerance + / - | 20ppm |
| Operating Temperature Max | 125°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3649604/)

## **ECX-34S SMD CRYSTAL** 

The ultra-miniature ECX-34S is a very compact SMD Tuning Fork   Crystal with an **extended operating temperature of -40 ~ +125°C** . The 3.2 x 1.5 x 0.9 mm ceramic package is ideal for mobile devices, wireless devices, and industrial applications. 

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## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**PARAMETERS**<br>||**CONDITIONS**|**ECX-34S**|**ECX-34S**|**ECX-34S**|**UNITS**|
|---|---|---|---|---|---|
||~~ee~~|**MIN**|**TYP**|**MAX**||
|Frequency<br>~~ee~~|Fo<br>~~ee~~<br>~~ee~~|~~ee~~|32.768<br>~~ee~~|~~ee~~|KHz<br>~~ee~~|
|Frequency Tolerance|@ +25°C<br>~~ee~~|||± 20|ppm|
|Temperature Coefficient|||-0.034|-0.040|ppm/°C²|
|Shunt Capacitance<br>~~ee~~|Co<br>~~ee~~|~~ee~~|1.05<br>~~ee~~|~~ee~~|pF<br>~~ee~~|
|Load Capacitance<br>~~ee~~|Specify in P/N<br>~~ee~~|~~ee~~|12.5<br>~~ee~~|~~ee~~|pF<br>~~ee~~|
|Drive Level<br>~~a~~|DL||0.1|1.0|μW|
|Equivalent Series Resistance<br>~~a~~<br>~~a~~|R1|||70K|Ω|
|Insulation Resistance<br>~~a~~<br>~~ee~~|@ 100V DC<br>~~ee~~|500M<br>~~ee~~|~~ee~~|~~ee~~|Ω<br>~~ee~~|
|Turnover Temperature<br>~~ee~~|~~ee~~|+20<br>~~ee~~|+25<br>~~ee~~|+30<br>~~ee~~|°C<br>~~ee~~|
|Operating Temperature<br>~~ee~~<br>~~ee~~|Topr<br>~~ee~~<br>~~ee~~|-40<br>~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~|+125<br>~~ee~~<br>~~ee~~|°C<br>~~ee~~<br>~~ee~~|
|Storage Temperature<br>~~ee~~|Tstg<br>~~ee~~|-55<br>~~ee~~|~~ee~~|+125<br>~~ee~~|°C<br>~~ee~~|
|Aging (First Year)<br>~~ee~~|@ +25°C ±3°C<br>~~ee~~|~~ee~~|~~ee~~|±3<br>~~ee~~|ppm<br>~~ee~~|



- 3.2 x 1.5 mm Footprint 

- Low Power RTC Applications such as STM32 AN2867 ~~_~~ 

- • **-40  ~ +125°C Operating Temp** 

- RoHS 2011/65/EU Compliant 

- REACH Compliant 

## **DIMENSIONS (mm)** 

|**PAD CONNECTIONS**|**PAD CONNECTIONS**|
|---|---|
|1|In/Out|
|2|Out/In|



_**Figure 2)** Suggested Land Pattern_ 

_**Figure 1)** Top, Side, and Bottom views_ _**Figure 2)** Suggested Land Pattern_ **PART NUMBERING GUIDE:  Example ECS-.327-12.5-34S-TR ECS -  FREQUENCY ABBREVIATION LOAD PACKAGE PACKAGING CAPACITANCE** ~~a ee ee ee ee~~ ECS .327 = 32.768  KHz 12.5 = 12.5 pF -34S = ECX-34S TR = Tape 6 = 6 pF & Reel ~~ee~~ ee 3K/Reel 

*Contact ECS for availability 

Rev.2016 

## R - S **ECX-34S** COMPLIANT **SMD CRYSTAL** 

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

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

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_**Figure 1)** Suggested Reflow Profile_ 



## Links

- [View this product on Novapart](https://novapart.co/products/ECS-.327-12.5-34S-TR/crystal-ecx-34s-series-32768-khz-20-ppm-125-pf)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ecs-inc-international/ecs-327-12-5-34s/crystal-32-768khz-12-5pf-3-2mmx1/dp/3649604)
---

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