# Crystal, 49USMX, 6 MHz, 30 ppm, 50 ppm, 18 pF

![Product image](https://novapart.co/image/farnell:1640889/)

**URL**: https://novapart.co/products/6.000MHZ%2049USMX/30/50/-40+85/18PF/ATF/crystal-49usmx-6-mhz-30-ppm-50-18-pf
**SKU**: 6.000MHZ 49USMX/30/50/-40+85/18PF/ATF
**Manufacturer**: EUROQUARTZ
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.3250
**Stock**: 1000+
**Lead Time**: 134 days (indicative)

## Description

Frequency Nom:6MHz; Crystal Case:SMD, 12.4mm x 4.5mm; Frequency Stability + / -:50ppm; Load Capacitance:18pF; Frequency Tolerance + / -:30ppm; Product Range:49USMX Series; Operating Temperature Min:-40

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (23-Jan-2024) |
| No. Of Pins | 2Pins |
| Frequency Nom | 6MHz |
| Product Range | 49USMX |
| Crystal Mounting | SMD |
| Load Capacitance | 18pF |
| Crystal Frequency | 6MHz |
| Crystal Case / Package | SMD, 12.4mm x 4.5mm |
| Frequency Stability + / - | 50ppm |
| Frequency Tolerance + / - | 30ppm |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1640889/)

**49USMX CRYSTALS** 

## _EURO_ QUARTZ 

## **49SMD Standard and Low Profile** 

- **FEATURES Low cost crystal for mass market applications Surface mount version of HC49-4H crystal** 

- e e **Comprehensie stockholding of standard frequencies** . **Customized parts readily available** e **Industry-standard package** e **Low-profile versions available** 

## **OUTLINE & DIMENSIONS** 

## **DESCRIPTION** 

49USMX crystals are low profile surface mount crystals that have the same footprint as standard HC49 or HC49-4H crystals. 49USMD crystals are ideal for use in low cost, mass-market applications but are also able to be produced to close tolerances when required. 

## **SPECIFICATION** 

3.2MHz to 70MHz 

Frequency Range: Calibration Tolerance: 

±30ppm at 25°C standard ±10ppm available 

Frequency Stability over Temp. AT-Cut: BT-Cut: Operating Temperature Range: Shunt Capacitance (C0): Load Capacitance (CL): 

AT-Cut: ±30ppm over -10° ~ +60°* BT-Cut: ±100ppm over -10° ~ +60°C* Operating Temperature Range: -10° ~ +60°C to -40° ~ +85°C Shunt Capacitance (C0): 4pf typical, 7pF maximum Load Capacitance (CL): Series or from 8pF to 32pF (Customer specified) Ageing: ±3ppm maximum in first year ±1ppm per year thereafter (Ta = 25°C, drive 100mW) Drive Level: 100mW typical, 500mW maximum Reflow Soldering: 260°C, 10s maximum Holder: Hermetic seal, resistance weld Packaging: EIA 24mm tape and reel 1000 pieces per reel RoHS Status: Compliant 

## **EQUIVALENT SERIES RESISTANCE** 

|**Frequency**|**Crystal Cut/**|**ESR**|
|---|---|---|
|**Range MHz**|**Mode**|**Ohms Max.**|
|3.2~3.4|AT-Fund.|300|
|3.5~4.0|AT-Fund.|150|
|4.1~4.9|AT-Fund.|120|
|5.0~5.9|AT-Fund.|100|
|6.0~8.9|AT-Fund.|80|
|9.0~9.9|AT-Fund.|60|
|10.0~12.9|AT-Fund.|50|
|13.0~24.0|AT-Fund.|45|
|24.1~30.0|AT-Fund.|40|
|24.0~48.0|BT-Fund.|40|
|27.0~30.0|AT-3rd OT|150|
|30.0~50.0|AT-3rd OT|100|
|50.1~70.0|AT-3rd OT|80|



## **PART NUMBER GENERATION** 

Example: 12.000MHz  49USMX/30/50/-20+70/18pF/ATF Nominal Frequency Package (height variants): 49USMX (4.2mm) 49USMXL (3.2mm) 49USMXL25 (2.5mm) Calibration tolerance at 25°C (±ppm) Temperature Stability over temp. range (±ppm) Operating Temp. Range (°C) _(Lower and upper limits)_ Load Capacitance _(Either SR for series or CL in pF)_ Crystal Mode ATF = AT-cut Fundamental BTF = BT-cut Fundmental AT3 = AT-cut 3rd Overtone 

**EUROQUARTZ LIMITED  Blacknell Lane  CREWKERNE  Somerset  UK  TA18 7HE Tel: +44 (0)1460 230000  Fax: +44 (0)1460 230001  Email: info@euroquartz.co.uk  www.euroquartz.co.uk** 



## Links

- [View this product on Novapart](https://novapart.co/products/6.000MHZ%2049USMX/30/50/-40+85/18PF/ATF/crystal-49usmx-6-mhz-30-ppm-50-18-pf)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/euroquartz/6-000mhz-49usmx-30-50-40-18pf-atf/crystal-6-000mhz/dp/1640889)
---

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