# Oscillator, 40 MHz, 100 ppm, SMD, 5mm x 3.2mm, 5V, ECS-3961 Series

![Product image](https://novapart.co/image/farnell:4072663/)

**URL**: https://novapart.co/products/ECS-3961-400-AU-TR/oscillator-40-mhz-100-ppm-smd-5mm-x-32mm-5v-ecs
**SKU**: ECS-3961-400-AU-TR
**Manufacturer**: ECS INC INTERNATIONAL
**Category**: Crystals & Oscillators || Oscillators || Standard Oscillators
**Price**: €1.1600
**Stock**: 200+
**Lead Time**: 78 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Frequency Nom | 40MHz |
| Product Range | ECS-3961 Series |
| Supply Voltage Nom | 5V |
| Frequency Stability + / - | 100ppm |
| Operating Temperature Max | 125°C |
| Operating Temperature Min | -55°C |
| Oscillator Case / Package | SMD, 5mm x 3.2mm |
| Oscillator Output Compatibility | HCMOS |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4072663/)

**ECS-3961/3963** 

## SMD Clock Oscillator 

ECS-3961 (5V) and ECS-3963 (3.3V) miniature SMD crystal controlled oscillators. Package is seam welded with a metal lid. 

**==> picture [63 x 7] intentionally omitted <==**

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## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

|**Parameters**|**Conditions**|**ECS-3961 (+5V)**|**ECS-3961 (+5V)**|**ECS-3961 (+5V)**|**ECS-3963 (+3.3V)**|**ECS-3963 (+3.3V)**|**ECS-3963 (+3.3V)**|**Units**|
|---|---|---|---|---|---|---|---|---|
|||**MIN**|**TYP**|**MAX**|**MIN**|**TYP**|**MAX**||
|**Frequency Range**||1.544||125.000|1.000||125.000|MHz|
|**Operating**<br>**Temperature**<br>~~pt~~<br>~~a~~|Standard<br>~~pt~~|-10<br>~~pt~~|~~pt~~|+70<br>~~pt~~|-10<br>~~pt~~|~~pt~~|+70|°C|
||Extended (N Option)<br>~~pt~~<br>~~(rs~~|-40<br>~~pt~~<br>~~(rs~~|~~pt~~<br>~~rs~~|+85<br>~~pt~~<br>~~rs~~|-40<br>~~pt~~|~~pt~~|+85|°C|
|**Storage Temperature**<br>~~pt~~<br>~~a~~<br>~~ee~~|~~pt~~<br>~~(rs~~<br>~~Re~~|-55<br>~~pt~~<br>~~(rs~~<br>~~rr~~|~~pt~~<br>~~rs~~<br>~~Gs~~|+125<br>~~pt~~<br>~~rs~~<br>~~rs~~|-55<br>~~pt~~<br>~~OS~~|~~pt~~<br>~~I~~|+125|°C|
|**Supply Voltage**<br>~~pt~~<br> ~~a~~<br>~~ee~~|~~pt~~<br>~~(rs~~<br>~~Re~~|+4.5<br>~~pt~~<br>~~(rs ~~<br>~~rr~~|+5.0<br>~~pt~~<br> ~~rs~~<br>~~Gs~~|+5.5<br>~~pt~~<br>~~rs~~<br>~~rs~~|+2.7<br>~~pt~~<br>~~OS~~|+3.3<br>~~pt~~<br>~~I~~|+3.6|VDC|
|**Frequency Stability***<br>~~pt~~<br> <br>~~ee~~|Option A<br>~~pt~~<br>~~Re~~|~~pt~~<br>~~rr ~~|~~pt~~<br> ~~Gs~~|±100<br>~~pt~~<br>~~rs ~~|~~pt~~<br> ~~OS ~~|~~pt~~<br> ~~I~~|±100|PPM|
||Option B<br>~~pt~~|~~pt~~<br>~~es~~|~~pt~~<br>~~rs~~|±50<br>~~pt~~<br>~~es~~|~~pt~~<br>~~rs~~|~~pt~~|±50|PPM|
||Option C<br>~~ee~~|~~ee~~<br>~~es~~<br>~~rs~~|~~ee~~<br>~~rs~~<br>~~ees~~|±25<br>~~ee~~<br>~~es~~<br>~~es~~|~~ee~~<br>~~rs~~<br>~~es~~|~~ee~~<br>~~es~~|±25<br>~~ee~~|PPM<br>~~ee~~|
|**Input Current**<br>~~Oo~~|1.544 ~ 9.999 MHz<br>~~es~~|~~es ~~<br>~~es~~<br>~~rs~~<br>~~rs~~|~~rs ~~<br>~~es~~<br>~~ees~~<br>~~ts~~|15<br> ~~es~~<br>~~es~~<br>~~es~~<br>~~es~~|~~rs~~<br>~~es~~<br>~~es~~<br>~~es~~|~~es~~<br>~~es~~|8<br>~~es~~|mA<br>~~es~~|
||10.0 ~34.999 MHz<br>~~es~~<br>~~ee~~|~~es~~<br>~~rs ~~<br>~~ee~~<br>~~rs~~|~~es~~<br> ~~ees ~~<br>~~ee~~<br>~~ts~~|20<br>~~es~~<br> ~~es ~~<br>~~ee~~<br>~~es~~|~~es~~<br> ~~es ~~<br>~~ee~~<br>~~es~~|~~es~~<br> ~~es~~<br>~~ee~~|10<br>~~es~~<br>~~ee~~|mA<br>~~es~~<br>~~ee~~|
||35.0 ~ 49.999 MHz|~~rs ~~<br>~~es~~|~~ts ~~<br>~~rs~~|35<br> ~~es ~~<br>~~**e**s~~|~~es~~<br>~~rs~~||25|mA|
||50.0 ~ 125 MHz<br>~~ee~~|~~ee~~<br>~~es~~|~~ee~~<br>~~rs~~|40<br>~~ee~~<br>~~**e**s~~|~~ee~~<br>~~rs~~|~~ee~~|35<br>~~ee~~|mA<br>~~ee~~|
|**Output Symmetry**<br>~~Oo~~<br>~~a~~<br>~~a~~|@50% VCC Level|~~es~~<br>~~ee ee~~|~~rs~~<br>~~—~~<br>~~ee~~|40/60<br>~~**e**s~~<br>~~ee~~|~~rs~~<br>~~ee~~|~~—~~<br>~~ee~~|40/60<br>~~ee~~|%<br>~~ee~~|
||@50% VCC Level<br>(T Option)<br>~~a~~<br>~~rs~~|~~es~~<br>~~a~~<br>~~ee ee~~<br>~~rs ts~~|~~rs~~<br>~~—~~<br>~~a~~<br>~~ee~~<br>~~ts~~|45/55<br>~~**e**s~~<br>~~a~~<br>~~ee~~<br>~~ns eG~~|~~rs~~<br>~~ee~~<br>~~eG~~|~~—~~<br>~~ee~~<br>~~I~~|45/55<br>~~ee~~|%<br>~~ee~~|
|**Rise and Fall Times**<br>~~Oo~~<br>~~a~~<br>~~a~~<br>~~ee~~|10% VDD to 90% Level<br>~~a~~<br>~~rs~~<br>~~rrr~~|~~es ~~<br>~~a~~<br>~~ee ee~~<br>~~rs ts~~<br>~~rrr~~|~~rs ~~<br>~~a~~<br>~~ee~~<br>~~ts~~<br>~~RI~~|5<br> ~~**e**s ~~<br>~~a~~<br>~~ee~~<br>~~ns eG~~<br>~~rs~~|~~rs~~<br>~~ee~~<br>~~eG~~<br>~~nS~~|~~ee~~<br>~~I~~<br>~~EE~~|5<br>~~ee~~|ns<br>~~ee~~|
|**“0” Level**<br>~~a~~<br>~~a~~<br>~~ee~~<br>~~a~~|VOL<br>~~rs~~<br>~~rrr~~<br>~~(rs~~|~~ee ee~~<br>~~rs ts~~<br>~~rrr~~<br>~~(rs~~|~~ee~~<br>~~ts~~<br>~~RI~~<br>~~rs~~|10% VDD<br>~~ee ~~<br>~~ns eG~~<br>~~rs~~|~~ee ~~<br>~~eG ~~<br>~~nS~~|~~ee~~<br> ~~I~~<br>~~EE~~|10% VDD<br>~~ee~~|VDC<br>~~ee~~|
|**“1” Level**<br>~~ee~~<br>~~a~~<br>~~ee~~|VOH<br>~~rrr~~<br>~~(rs~~<br>~~rrr~~<br>|90% VDD<br>~~rrr~~<br>~~(rs~~<br>~~rrr~~<br>|~~RI~~<br>~~rs~~<br>~~RI~~<br>|~~rs~~<br>~~rs~~<br>|90% VDD<br>~~nS~~<br>~~nS~~<br>|~~EE~~<br>~~EE~~<br>||VDC<br>|
|**Output Load**<br>~~ee~~<br>~~a~~<br>~~ee~~|HCMOS<br>~~rrr~~<br>~~(rs~~<br>~~rrr~~<br>|~~rrr ~~<br>~~(rs ~~<br>~~rrr~~<br>|~~RI~~<br> ~~rs~~<br>~~RI~~<br>|30<br>~~rs~~<br>~~rs~~<br>|~~nS ~~<br>~~nS~~<br>|~~EE~~<br>~~EE~~<br>|15<br>|pF<br>|
|**Startup Time**<br>~~ee~~|~~rrr~~<br>~~Ps~~|~~rrr~~<br>~~Ps~~|~~RI~~<br>~~Ps~~|10<br>~~rs~~<br>~~Ps~~|~~nS~~<br>~~Ps~~|~~EE~~<br>~~Ps~~|10<br>~~Ps~~|ms<br>~~Ps~~|



**ECS      -          Series        -         Frequency Abbreviations -  Stability Tolerance    -   Temperature                    -       Symmetry            -          Packaging** ~~LO~~ ECS 3961 +5V 200 = 20 MHz A = ±100 ppm Blank = -10 ~ 70°C Blank = 40/60 TR = Tape & Reel 3963 +3.3V B = ±50 ppm M = -20 ~ +70°C T  = 45/55 1K/Reel C = ±25 ppm N = -40 ~ +85°C U = -55 ~ +125°C ~~ee~~ ee 

## **ECS-3961/3963** SMD Clock Oscillator 

## **Package Dimensions (mm)** 

**==> picture [66 x 51] intentionally omitted <==**

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Os50:0122 |<br>**----- End of picture text -----**<br>


_**Figure 2)** Land Pattern_ 

_**Figure 1)** Top, Side, and Bottom views_ 

|**Pin Connections**|**Pin Connections**|
|---|---|
|#1|Tri-State**|
|#2|Ground|
|#3|Output|
|#4|VDD|



|**Tri-State Control Voltage **|**Tri-State Control Voltage **|
|---|---|
|Pad 1|Pad 3|
|Open|Oscillation|
|70% VDD Min.|Oscillation|
|30% VDD Max.|No Oscillation|



_**Figure 3)** Tape Specifications_ 



## Links

- [View this product on Novapart](https://novapart.co/products/ECS-3961-400-AU-TR/oscillator-40-mhz-100-ppm-smd-5mm-x-32mm-5v-ecs)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ecs-inc-international/ecs-3961-400-au-tr/oscillator-40mhz-hcmos-smd-5x3/dp/4072663)
---

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