# Oscillator, 25 MHz, HCMOS, 50 ppm, SMD, 5mm x 3.2mm, 1.8 V, ECS-3518 Series

![Product image](https://novapart.co/image/farnell:4076683/)

**URL**: https://novapart.co/products/ECS-3518-250-B-TR/oscillator-25-mhz-hcmos-50-ppm-smd-5mm-x-32mm-18-v
**SKU**: ECS-3518-250-B-TR
**Manufacturer**: ECS INC INTERNATIONAL
**Category**: Crystals & Oscillators || Oscillators || Standard Oscillators
**Price**: €1.0600
**Stock**: 10+
**Lead Time**: 78 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Frequency Nom | 25MHz |
| Product Range | ECS-3518 Series |
| Supply Voltage Nom | 1.8V |
| Frequency Stability + / - | 50ppm |
| Operating Temperature Max | 70°C |
| Operating Temperature Min | 0°C |
| Oscillator Case / Package | SMD, 5mm x 3.2mm |
| Oscillator Output Compatibility | HCMOS |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4076683/)

## **ECS-3518/3525** SMD Clock Oscillator 

ECS-3518 (1.8V) and ECS-3525 (2.5V) subminiature SMD oscillators, ideal for today’s high density applications. 

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## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

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ECS-3518/3525<br>ECS-3518 (+1.8V)  ECS-3525 (+2.5V)<br>Parameters  Conditions  Units<br>MIN  TYP  MAX  MIN  TYP  MAX<br>a Frequency Range  1.544  125.00  1.544  ws 125.00  MHz<br>Operating  Standard  0  +70  0  +70  °C<br>Temperature Extended (N Option)  -40  +85  -40  +85  _ °C<br>== Storage Temperature  -55  +125  -55  +125  . °C<br>ee Supply Voltage VDD  +1.62  +1.8  +1.98  — +2.25  = +2.5  +2.75  : VDC<br>~<br>Option A  ±100  ±100  PPM<br>Frequency Stability* a Option B  ±50  ±50  PPM<br>——-——-— Option C  SSee ±25  ±25  PPM<br>• 1.8V or 2.5V Versions  1.544 ~ 9.999 MHz  6  7  mA<br>• 3.2 x 5.0 mm Footprint  ——_———— 10.000 ~ 34.999 MHz  7  8  mA<br>• Extended Temp Range  Input Current ———<br>Option  35.000 ~ 49.999 MHz  15  20  mA<br>• PbFree/RoHS Compliant   ——_———— 50.000 ~ 125.000 MHz  25  30  mA<br>=<br>@50% VCC Level   40/60  40/60  %<br>Output Symmetry  ————_—— @50% VCC Level<br>45/55  45/55  %<br>See (T Option)<br>Rise and Fall Times  10% VDD to 90% Level  5  6  ns<br>rr<br>re “0” Level  VOL  a VCC *10%  VCC *10%  VDC<br>a CC<br>“1” Level  VOH  VCC *90%  VCC *90%  VDC<br>——— Output Load  HCMOS  30  30  pF<br>———— Startup Time  10  10  ms<br>—_—<br>**----- End of picture text -----**<br>


_* Note: Inclusive of 25°C tolerance, operating temperature, range, input voltage change, load change, shock, aging and vibration._ 

**Part Numbering Guide:  ECS-3525-200-AN-TR** 

**ECS      -          Series        -   Frequency Abbreviations -     Stability         -          Temperature -                Output Symmetry        -          Packaging** ~~Ee~~ ECS 3518 = +1.8V 200 = 20 MHz A = ±100 ppm Blank = -0 ~ 70°C Blank = 40/60 STD TR = Tape & Reel 3525 = +2.5V B = ±50 ppm M = -20 ~ +70°C T = 45/55 1K/Reel C = ±25 ppm N = -40 ~ +85°C - | 

## **ECS-3518/3525** SMD Clock Oscillator 

## **Package Dimensions (mm)** 

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_**Figure 2)** Land Pattern_ 

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

|**Pad Connections**|**Pad Connections**|
|---|---|
|#1|Tri-State|
|#2|Ground|
|#3|Output|
|#4|VCC|



|**Tri-State Control Voltage **|**Tri-State Control Voltage **|
|---|---|
|Pad 1|Pad 3|
|Open|Oscillation|
|1 Level|Oscillation|
|0 Level|High Impedance|



_**Figure 3)** Suggested Reflow Profile_ 

## RoHS COMPLIANT 

**ECS-3518/3525** SMD Clock Oscillator 

## **Tape Dimensions (mm)** 

|**Package Data**|**Package Data**|
|---|---|
|**Item**|**Description**|
|Lid|Metal|
|Base|Ceramic|
|Sealing|Seam Weld|
|Terminal|Tungsten (Metalized)|
|Plating|Gold/Nickel<br>(Surface)/(Under)|
|RoHS|Compliant (PbFree)|
|MSL|1|



_**Figure 4)** Pocket Tape Dimensions_ 



## Links

- [View this product on Novapart](https://novapart.co/products/ECS-3518-250-B-TR/oscillator-25-mhz-hcmos-50-ppm-smd-5mm-x-32mm-18-v)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ecs-inc-international/ecs-3518-250-b-tr/oscillator-25mhz-hcmos-smd-5-x/dp/4076683)
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