ECS-SR1-4.00-A-TR

Resonator, ECS-SR-A Series, 4 MHz, ± 0.5%, ± 0.3%, 40 ohm

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Manufacturer: ECS INC INTERNATIONAL
Product type: Resonators
SVHC: No SVHC (27-Jun-2024)
Frequency: 4MHz
No. of Pins: 2Pins
Product Range: ECS-SR-A Series
Resonant Frequency: 4MHz
Resonant Impedance: 40ohm
Frequency Stability: ± 0.3%
Frequency Tolerance: ± 0.5%
Oscillator Mounting: SMD
Operating Temperature Max: 80°C
Operating Temperature Min: -20°C

Delivery and price
Units per pack	25000
Price	0.242 €
Current stock	10+
Lead time	30 days

Datasheet

## —— ** Not suggested for new design. ** 

## **ECS-SR-A SMD Ceramic Resonator** 

The ECS-SR-A Series SMD ceramic resonator is an excellent low cost frequency control solution when absolute frequency accuracy is not important. 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

## **ECS-SR-A** 

|**Part Number ***|**Frequency**<br>**Range (MHz)**|**Frequency**<br>**Accuracy**<br>**@25⁰C (%)**|**Frequency**<br>**Stability**<br>**-20 ~ +80⁰C **<br>**(%)**|**Aging for**<br>**Ten Years**<br>**(%)**|**Resonant**<br>**Resistance**<br>**(Ω) MAX**|
|---|---|---|---|---|---|
|**ECS-SR1□.□□-A**|2.00 ~ 8.00|±0.5|±0.3|±0.3|40|



_Complete part number to include frequency_ 

- Low Profile 

- RoHS Compliant (Note 7 Exemption) 

## **Part Numbering Guide:  ECS-SR1-4.00-A-TR** 

• Tape and Reel **ECS      -          Series                  -       Frequency          -        Version          -           Packaging** Packaging ~~ee~~ ECS SR1 = 2 ~ 8 MHz 4.00 = 4.00 MHz A = SR-A Series TR = Tape & Reel 2,500/Reel es oe ~~|~~ [ 

## **Package Dimensions (mm)** 

**==> picture [76 x 44] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pin Connections<br>#1  In/Out<br>#2  Out/In<br>**----- End of picture text -----**<br>


_**Figure 2)**_ Land Pattern 

_**Figure 1)** Top, Side, and Bottom End Views_ 

|**Package Type**|**A**|**Dimensions (mm)**<br>**B**<br>**C**|**Dimensions (mm)**<br>**B**<br>**C**|**Dimensions (mm)**<br>**D**|**Dimensions (mm)**<br>**D**|**E**||**Package**<br>**Type**|**Dimensions (mm)**<br>**A**<br>**B**|**Dimensions (mm)**<br>**C**|**Dimensions (mm)**<br>**C**|
|---|---|---|---|---|---|---|---|---|---|---|---|
|ECS-SR1|7.5|3.3|1.8||2.5|1.5||ECS-SR1|5.0<br>1.7||4.0|

Updated at April 28, 2026

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