# Crystal, ECX-42 Series, 12 MHz, 10 ppm, 10 ppm, 9 pF

![Product image](https://novapart.co/image/farnell:4230262RL/)

**URL**: https://novapart.co/products/ECS-120-9-42-CKM-TR/crystal-ecx-42-series-12-mhz-10-ppm-9-pf
**SKU**: ECS-120-9-42-CKM-TR
**Manufacturer**: ECS INC INTERNATIONAL
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.5760
**Stock**: 500+
**Lead Time**: 106 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Frequency Nom | 12MHz |
| Product Range | ECX-42 Series |
| Load Capacitance | 9pF |
| Crystal Frequency | 12MHz |
| Crystal Case / Package | SMD, 4mm x 2.5mm |
| Frequency Stability + / - | 10ppm |
| Frequency Tolerance + / - | 10ppm |
| Operating Temperature Max | 70°C |
| Operating Temperature Min | -20°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4230262RL/)

## COMPLIANTRolls 

The miniature ECX-42 is a compact SMD Crystal.  The 4.0 x 2.5 x 0.8 mm ceramic package is ideal for wireless, PMCIA, and high density applications 

**ECX-42 SMD CRYSTAL** | **Request a Sample** — 

## **ECX-42 SMD CRYSTAL** 

- Low Profile 

- 4.0 x 2.5 mm Footprint 

- Extended Temp. Range Option 

- RoHS Compliant 

## **DIMENSIONS (mm)** 

## **OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS** 

**PARAMETERS CONDITIONS ECX-42 UNITS MIN TYP MAX** ~~ee~~ Frequency ~~es~~ 12.000 50.000 MHz Mode of Oscillation Fundamental ~~eees ee~~ Frequency Tolerance* ~~es~~ @ +25°C ± 30 ppm ~~es~~ Frequency Stability* ~~es~~ -10 ~ +70°C ± 50 ppm ~~es~~ Shunt Capacitance ~~es~~ Co 5 pF ~~es~~ Load Capacitance ~~es~~ Specify in P/N 12 pF ~~es~~ Drive Level ~~es~~ DL ~~es~~ 300 μW ~~es~~ Operating Temperature* ~~es~~ Topr ~~es~~ -10 +70 °C ~~ee~~ Storage Temperature ~~es~~ Tstg -55 +125 °C ~~es~~ Aging (First Year) ~~es~~ @ +25°C ±3°C ±5 ppm 

|**Frequency (MHz)         ESR Ω Max.**|**Frequency (MHz)         ESR Ω Max.**|
|---|---|
|12.000 ~ 15.999|80|
|16.000 ~ 19.999|60|
|20.000 ~ 23.999|50|
|24.000 ~ 50.000|40|



_**Figure 1)** Top, Side, and Bottom_ 

Crystal is symmetrical, pad 1 & 3 are interchangeable. Chamfer on the bottom pad has no electrical significance. 

|**Pad Connections**|**Pad Connections**|
|---|---|
|1|In/Out|
|2|Gnd|
|3|Out/In|
|4|Gnd|



_**Figure 2)** Suggested land_ 

## **PART NUMBERING GUIDE:  Example ECS-200-20-42-TR** 

||**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**|**ECS -  FREQUENCY ABBREVIATION**||**LOAD**|||**PACKAGE**|**PACKAGE**|||**AVAILABLE OPTIONS**|**AVAILABLE OPTIONS**|**AVAILABLE OPTIONS**||**PACKAGING**|**PACKAGING**|**PACKAGING**||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||**CAPACITANCE**|||||Tolerance           Stability                 Temp Range|||Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range|Tolerance           Stability                 Temp Range||||
|||||||||||||||||||||
||200 = 20.000  MHz<br>ECS||||20 = 20 pF|||42 =||Blank = Std||Blank= Std||Blank= Std||||TR =||
||See P/N Guide||||S = Series||ECX-42|||A = ± 25ppm<br>J = ± 20ppm<br>R = ± 15ppm<br>C = ± 10ppm||D= ±100 ppm<br>E = ± 50 ppm<br>G = ± 30 ppm<br>H = ± 25 ppm||L =   -10 ~ +70°C<br>M = -20 ~ +70°C<br>Y  =  -30 ~ +85°C<br>N =  -40 ~ +85°C||||Tape<br>& Reel<br>1K/Reel||
|* Specify available options in P/N.|* Specify available options in P/N.|||||||||||T = ± 20 ppm †||P =  -40 ~ +105°C||||||
|† Contact ECS for availability over extended temp range.|† Contact ECS for availability over extended temp range.||||† Contact ECS for availability over extended temp range.|||||||W = ±15 ppm †<br>K = ± 10 ppm †||S =  -40 ~ +125°C<br>U =  -55 ~ +125°C||||Rev.2017||



## **ECX-42 SMD CRYSTAL** 

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

||**SOLDER PROFILE**|
|---|---|
|Peak solder Temp+260°C Max 10 sec Max.||
||2 Cycles Max.|
||MSL 1,Lead Finish Au|
||(°C)<br>+260 °CPeak _|
||+220 °C|
|2|+170£10 °C|
|o<br>E|f<br>aes|



|**DEVELOPED FREQUENCIES**|**DEVELOPED FREQUENCIES**|
|---|---|
|Abbreviation|Frequency (MHZ)|
|120|12.000|
|130|13.000|
|160|16.000|
|240|24.000|
|260|26.000|
|320|32.000|



_**Figure 1)** Suggested Reflow Profile_ 



## Links

- [View this product on Novapart](https://novapart.co/products/ECS-120-9-42-CKM-TR/crystal-ecx-42-series-12-mhz-10-ppm-9-pf)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ecs-inc-international/ecs-120-9-42-ckm-tr/xtal-12mhz-9pf-smd-4mm-x-2-5mm/dp/4230262RL)
---

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