ECS-.327-12.5-17-TR

Crystal, ECX-306 Series, 32.768 kHz, 20 ppm, 12.5 pF

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: ECS INC INTERNATIONAL
Product type: Crystals
Product Range: ECX-306 Series
Load Capacitance: 12.5pF
Crystal Frequency: 32.768kHz
Crystal Case / Package: SMD, 8mm x 3.8mm
Frequency Stability + / -: -
Frequency Tolerance + / -: 20ppm
Operating Temperature Max: 85°C
Operating Temperature Min: -40°C

Delivery and price
Units per pack	3000
Price	0.539 €
Current stock	10+
Lead time	30 days

Datasheet

## ee] ee ECX-306 

## OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS 

|**PARAMETERS**|**CONDITIONS**|**ECX-306**|**ECX-306**|**ECX-306**|**UNITS**|
|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**||
|Frequency<br>~~I~~|FO<br>~~I~~|~~I~~|32.768<br>~~I~~|~~I~~|KHz<br>~~I~~|
|Frequency Tolerance<br>~~es~~|@ +25°C<br>~~es~~|~~es~~|~~es~~|± 20<br>~~es~~|ppm<br>~~es~~|
|Load Capacitance<br>~~ss~~|Specify in P/N<br>~~ss~~|~~ss~~|12.5<br>~~ss~~|~~ss~~|pF<br>~~ss~~|
|Drive Level<br>~~ss~~|DL<br>~~ss~~|~~ss~~|~~ss~~|1.0<br>~~ss~~|µW<br>~~ss~~|
|Equivalent Series Resistance<br>~~ss~~|R1<br>~~ss~~|~~ss~~|~~ss~~|50K<br>~~ss~~|Ω<br>~~ss~~|
|Turnover Temperature<br>~~ss~~|~~ss~~|+20<br>~~ss~~|**+25**<br>~~ss~~|+30<br>~~ss~~|°C<br>~~ss~~|
|Temperature Coefficient<br>~~ss~~|~~ss~~|-0.028<br>~~ss~~|-0.034<br>~~ss~~|-0.040<br>~~ss~~|ppm/°C²<br>~~ss~~|
|Shunt Capacitance<br>~~es~~|Co<br>~~es~~|~~es~~|1.35<br>~~es~~|~~es~~|pF<br>~~es~~|
|First Year Aging<br>~~es~~<br>a|+25°C ±3°C<br>~~es~~|~~es~~|~~es~~|± 3<br>~~es~~|ppm<br>~~es~~|
|Operating Temperature<br>a<br>es|Topr<br>ss|-40<br>ss|ss|+85|°C|
|Storage Temperature<br>a<br>es|Tstg<br>ss|-55<br>ss|ss|+125|°C|
|Insulation Resistance<br>es<br>~~ss~~|@ 100V DC<br>ss<br>~~ss~~|500M<br>ss<br>~~ss~~|ss<br>~~ss~~|~~ss~~|Ω<br>~~ss~~|



## TOP, BOTTOM, SIDE VIEWS & LAND PATTERN 

## PART NUMBERING GUIDE:  Example ECS-.327-12.5-17-TR 

||**ECS    -     Frequency Abbreviation   -   Load Capacitance  -     Package Type         -       Tolerance       -           Packaging**|**ECS    -     Frequency Abbreviation   -   Load Capacitance  -     Package Type         -       Tolerance       -           Packaging**<br>.327 = 32.768 KHz<br>12.5 = 12.5 pF<br>6 = 6 pF<br>-17 = ECX-306<br>-TR = Tape  & Reel<br>3K/Ree**l**<br>Blank (Std) = ±20 ppm<br>C= ±10 ppm<br>~~a~~fs ~~|~~||
|---|---|---|
|**1105 South Ridgeview Road      Olathe, KS  66062      Phone:  913.782.7787      Fax:  913.782.6991       www.ecsxtal.com**|**1105 South Ridgeview Road      Olathe, KS  66062      Phone:  913.782.7787      Fax:  913.782.6991       www.ecsxtal.com**|**1105 South Ridgeview Road      Olathe, KS  66062      Phone:  913.782.7787      Fax:  913.782.6991       www.ecsxtal.com**<br>e<br>e<br>e<br>e|

Updated at June 5, 2026

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