# CRYSTAL, 18.432MHZ, 20PF, HC-49U

![Product image](https://novapart.co/image/farnell:2057981/)

**URL**: https://novapart.co/products/FOXLF184-20-BAG100/crystal-18432mhz-20pf-hc-49u
**SKU**: FOXLF184-20-BAG100
**Manufacturer**: FOX ELECTRONICS
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.3550
**Stock**: 500+
**Lead Time**: 2 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Crystal Case | Through Hole, 11mm x 4.65mm |
| Frequency Nom | 18.432MHz |
| Product Range | HC49ULF Series |
| Load Capacitance | 20pF |
| Frequency Stability + / - | 50ppm |
| Frequency Tolerance + / - | 30ppm |
| Operating Temperature Max | 70°C |
| Operating Temperature Min | -20°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2057981/)

## **Resistance Weld Thru-Hole Crystal** 

## **Model: HC49ULF** 

Page 1 of 2 

## **RoHS Compliant / Pb Free** 

## **Rev. 4/23/2014** 

http://www.foxonline.com/need_a_sample.htm 

## **FEATURES** 

- Low Cost 

- Stocking Standard (see page 2) 

- High Frequency Range 

- Fundamental to 40 MHz 

- Resistance Weld 

## **OPTIONS** 

- Tolerances to 5 PPM 

- Stabilities to 3 PPM 

- Temperatures to -40ºC ~ +105ºC 

- Mylar Spacer 

- Vinyl Sleeve 

- Third Lead 

## **• PART NUMBER** 

**==> picture [275 x 236] intentionally omitted <==**

**----- Start of picture text -----**<br>
Part Number Model Number Frequency Range (MHz)<br>281LF-Frequency-xxxxx  HC49ULF 1.8432 ~ 180.000<br>• STANDARD SPECIFICATIONS [1]<br>PARAMETERS MAX (unless otherwise noted)<br>Frequency Range 1.8432 ~ 180.000 MHz<br>Frequency Tolerance @ 25ºC ±30 PPM<br>Frequency Stability, ref @ 25ºC<br>  Over Operating Temp Range ±50 PPM<br>Temperature Range<br>Operating (TOPR) -20ºC ~ +70ºC<br>Storage  (TSTG) -40ºC ~ +85ºC<br>Shunt Capacitance  (Co) 7.0 pF<br>Load Capacitance   (CL) 10 pF ~ Series<br>(Customer Specified)<br>Drive Level<br>1.8432 ~ 3.000 MHz 2.0 mW<br>3.000+ ~ 180.000 MHz 1.0 mW<br>Aging per year ±5 PPM<br>**----- End of picture text -----**<br>


1  Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer Service for specific requirements. 

All specifications subject to change without notice. 

|**Frequency Range**<br>**(MHz)**|**Operating Mode**|**Max ESR**Ω|
|---|---|---|
|1.8432~2.000<br>**(MHz)**<br>Ge|Fundamental<br>Ge|750<br>Ge|
|2.000+~2.400<br>~~es~~|Fundamental<br>~~es~~|500<br>~~es~~|
|2.400+ ~ 3.000|Fundamental|300|
|3.000+ ~3.200<br>~~Ge~~|Fundamental<br>~~Ge~~|200<br>~~Ge~~|
|3.200+ ~ 3.700<br>~~Ge~~|Fundamental<br>~~Ge~~|120<br>~~Ge~~|
|3.700+ ~ 4.200<br>~~a~~|Fundamental<br>~~a~~<br>~~Q~~|100<br>~~Q~~|
|4.200+ ~ 4.900|Fundamental|70|
|4.900+ ~ 5.000|Fundamental|55|
|5.000+ ~6.000<br>~~a~~|Fundamental<br>~~a~~|50|
|6.000+ ~8.000<br>~~Re~~|Fundamental|40|
|8.000+ ~10.000<br>~~Re~~|Fundamental|35|
|10.000+ ~ 12.500<br>~~Re~~|Fundamental|30|
|12.500+ ~16.000<br>~~a~~|Fundamental|25|
|16.000+ ~40.000|Fundamental|20|
|23.000+ ~ 75.000|3rd OT|40|
|60.000~110.000<br>~~Ge~~|5th OT<br>~~Ge~~|80<br>~~Ge~~|
|110.000 ~ 180.000|7th OT|120|



**==> picture [120 x 15] intentionally omitted <==**

**----- Start of picture text -----**<br>
All dimensions are in millimeters.<br>TERMINATION FINISH: Sn/3.0Ag/0.5Cu<br>**----- End of picture text -----**<br>


Fox Electronics          5570 Enterprise Parkway          Fort Myers, Florida 33905          USA +1.239.693.0099          FAX +1.239.693.1554 

An Integrated Device Technology, Inc. company _**FOX** online_ _**.**_ com 

## **Resistance Weld Thru-Hole Crystal** ~~PT~~ **Model: HC49ULF RoHS Compliant / Pb Free Rev. 4/23/2014** Page 2 of 2 http://www.foxonline.com/need_a_sample.htm 

_All specifications subject to change without notice._ 

|**• HC49ULF Standard Crystals**<br>po|**• HC49ULF Standard Crystals**<br>po|**• HC49ULF Standard Crystals**<br>po|**• HC49ULF Standard Crystals**<br>po|**• HC49ULF Standard Crystals**<br>po|**• HC49ULF Standard Crystals**<br>po|
|---|---|---|---|---|---|
|**Part Number**<br>po<br>~~po~~|**Frequency**<br>|**Tolerance**<br>|**Stability**<br>|**Temp Range**<br>|**CL**<br>|
|FOXLF018S<br>po<br>~~po~~|1.843200<br>|± 30 ppm<br>|± 50ppm<br>|-20 to+70 C<br>|13pF<br>|
|FOXLF024S<br>~~poa~~|2.457600<br>~~a~~|± 30 ppm<br>± 30 ppm<br>~~a~~|± 50ppm<br>~~a~~|-20 to+70 C<br>~~a~~|13pF<br>32pF<br>~~a~~|
|FOXLF036S<br>~~a~~<br>~~a~~|3.579545<br>~~a~~<br>~~a~~|± 30ppm<br>~~a~~<br>~~a~~|± 50ppm<br>~~a~~<br>~~a~~|-20 to +70 C<br>~~a~~<br>~~a~~|32pF<br>18pF<br>~~a~~<br>~~a~~|
|FOXLF0368S<br>~~a~~<br>~~a~~|3.686400<br>~~a~~<br>~~a~~|± 30 ppm<br>~~a~~<br>~~a~~|± 50ppm<br>~~a~~<br>~~a~~|-20 to+70 C<br>~~a~~<br>~~a~~|Series<br>~~a~~<br>~~a~~|
|FOXLF0368-20<br>~~a~~<br>~~a~~|3.686400<br>~~a~~<br>~~a~~|± 30 ppm<br>~~a~~<br>~~a~~|± 50ppm<br>~~a~~<br>~~a~~|-20 to+70 C<br>~~a~~<br>~~a~~|20pF<br>~~a~~<br>~~a~~|
|FOXLF040A<br>~~OO~~|4.000000<br>~~OO~~|±30 ppm<br>~~OO~~|± 50ppm<br>~~OO~~|-20 to+70 C<br>~~OO~~|20pF<br>Series<br>~~OO~~|
|FOXLF040<br>~~OG~~|4.000000<br>~~OG~~|±30 ppm<br>~~OG~~|± 50ppm<br>~~OG~~|-20to+70 C<br>~~OG~~|20pF<br>~~OG~~|
|FOXLF080-20<br>~~a~~|8.000000<br>~~a~~|± 30ppm<br>~~a~~|± 50ppm<br>~~a~~|-20 to +70 C<br>~~a~~|20pF<br>~~a~~|
|FOXLF100-20<br>~~a~~<br>~~OO~~|10.000000<br>~~a~~<br>~~OO~~|± 30 ppm<br>~~a~~<br>~~OO~~|± 50ppm<br>~~a~~<br>~~OO~~|-20 to+70 C<br>~~a~~<br>~~OO~~|20pF<br>~~a~~<br>~~OO~~|
|FOXLF115<br>~~a~~|11.059200<br>~~a~~|± 30 ppm<br>~~a~~|± 50ppm<br>~~a~~|-20 to+70 C<br>~~a~~|20pF<br>Series<br>~~a~~|
|FOXLF115-20<br>~~a~~|11.059200<br>~~a~~|± 30 ppm<br>± 30 ppm<br>~~a~~|± 50ppm<br>~~a~~|-20 to+70 C<br>~~a~~|20pF<br>~~a~~|
|FOXLF120<br>~~a~~<br>~~es~~|12.000000<br>~~a~~|± 30 ppm<br>± 30 ppm<br>~~a~~|±50 ppm<br>~~a~~|-20 to+70 C<br>~~a~~|20pF<br>Series<br>~~a~~|
|FOXLF120-20<br>~~es~~<br>~~eS~~|12.000000|± 30 ppm<br>± 30ppm|± 50ppm|-20 to +70 C|20pF|
|FOXLF160<br>~~es~~<br>~~eS~~|16.000000|± 30ppm|± 50ppm|-20 to +70 C|Series|
|FOXLF160-20<br>~~eS~~<br>~~a~~|16.000000|± 30ppm|± 50ppm|-20 to +70 C|20pF|
|FOXLF200-20<br>~~OO~~<br>~~a~~|20.000000<br>~~OO~~|± 30 ppm<br>~~OO~~|± 50ppm<br>~~OO~~|-20 to+70 C<br>~~OO~~|20pF<br>~~OO~~|
|FOXLF250F-20<br>~~a~~|25.000000|± 30 ppm|± 50 ppm|-20 to +70 C|20pF<br>20pF|



Fox Electronics          5570 Enterprise Parkway          Fort Myers, Florida 33905          USA +1.239.693.0099          FAX +1.239.693.1554 

47 

An Integrated Device Technology, Inc. company _**FOX** online_ _**.**_ com 



## Links

- [View this product on Novapart](https://novapart.co/products/FOXLF184-20-BAG100/crystal-18432mhz-20pf-hc-49u)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/fox-electronics/foxlf184-20-bag100/crystal-18-432mhz-20pf-hc-49u/dp/2057981)
---

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