M49-14.31818-18-30/50/-40+85

Crystal, M49, 14.31818 MHz, 30 ppm, 50 ppm, 18 pF

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: MERCURY UNITED ELECTRONICS
Product type: Crystals
Frequency Nom:14.31818MHz; Crystal Case:SMD, 12.4mm x 4.5mm; Frequency Stability + / -:50ppm; Load Capacitance:18pF; Frequency Tolerance + / -:30ppm; Product Range:M49 Series; Op
SVHC: No SVHC (14-Jun-2023)
Frequency Nom: 14.31818MHz
Product Range: M49
Load Capacitance: 18pF
Crystal Frequency: 14.31818MHz
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

Delivery and price
Units per pack	500
Price	0.294 €
Current stock	10+
Lead time	30 days

Datasheet

**M49 CRYSTALS** 

**Low cost crystal for mass market applications Surface mount version of 49S crystal Comprehensive stock of standard frequencies Customized parts readily available Industry-standard package Low-profile version available** 

## **DESCRIPTION** 

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

## **OUTLINE & DIMENSIONS** 

M49 crystals are low profile surface mount crystals having a similar footprint to standard HC49 or 49S crystals. M49 crystals are ideal for use in low cost, mass-market applications. ML49 is a lower profile version. 

## **SPECIFICATION** 

Package Designation 

M49: 12.4 x 4.5 x 4.0mm ML49: 12.4 x 4.5 x 3.0mm 

Frequency Range 3.20MHz to 48.0MHz: 27.0MHz to 70.0MHz: 24.0MHz to 48.0MHz: Calibration Tolerance: 

3.20MHz to 48.0MHz: AT-Cut Fundamental 27.0MHz to 70.0MHz: AT-Cut 3rd Overtone 24.0MHz to 48.0MHz: BT-Cut Fundamental Calibration Tolerance: ±30ppm at 25°C standard from ±5ppm available Frequency Stability over Temp: _See table_ Operating Temperature Range: _See table_ Shunt Capacitance (C0): 4pf typical, 7pF maximum Load Capacitance (CL): Series or from 8pF to 32pF ( _Customer specified_ ) Ageing: ±3ppm/year maximum (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: RoHS Compliant and Pb free 

## **PART NUMBER FORMAT** 

## **FREQUENCY STABILITY vs. OPERATING TEMPERATURE RANGE** 

|**Stability**|**Temperature**|**Stability ppm**|**Stability ppm**|**Stability ppm**||
|---|---|---|---|---|---|
|**Code**|**Range**|±10 ±15 ±20 ±25 ±30|±10 ±15 ±20 ±25 ±30|±10 ±15 ±20 ±25 ±30|±10 ±15 ±20 ±25 ±30|
|X|-10 to +60°C|ü  ü  ü  ü  ü|ü  ü  ü  ü  ü|ü  ü  ü  ü  ü|ü  ü  ü  ü  ü|
|Y|-20 to +70°C|n  ü|n  ü<br>ü|ü<br>ü|ü<br>ü|
|I|-40 to +85°C|ü|ü<br>ü|ü<br>ü|ü<br>ü|
|ü= available, n= contact Mercury||= contact Mercury||||



## **EQUIVALENT SERIES RESISTANCE** 

|**Frequency**<br>**Range MHz**<br>**Crystal Cut**<br>**Mode**<br>PT|**Frequency**<br>**Range MHz**<br>**Crystal Cut**<br>**Mode**<br>PT|**ESR**<br>**Max.**|
|---|---|---|
|3.2 ~ 3.4|AT-Fund|300|
|3.5 ~ 6.0|AT-Fund|120|
|6.1 ~ 10.0|AT-Fund|60|
|10.1 ~ 30.0|AT-Fund|40|
|24.0 ~ 48.0|BT-Fund|40|
|27.0 ~ 30.0|AT-3rd OT|150|
|30.1 ~ 50.0|AT-3rd OT|100|
|50.1 ~ 70.0|AT-3rd OT|80|



**==> picture [263 x 237] intentionally omitted <==**

**----- Start of picture text -----**<br>
Example:   M49 - 16.000 - 12 - 15/20/-20+70/100R<br>Package<br>(M49 or ML49)<br>Frequency in MHz<br>Load Capacitance<br>(Either SR for series or CL in pF)<br>Calibration tolerance<br>at 25°C (±ppm)<br>Temperature Stability<br>over temp. range (±ppm)<br>Operating Temp. Range (°C)<br>(Lower and upper limits)  Or use<br>'X' for -10 to +60°C<br>'Y' for -20 to +70°C<br>'I' for -40 to +85°C<br>Equivalent Series Resistance<br>(Optional - use when special<br>value is required)<br>**----- End of picture text -----**<br>


**MERCURY ELECTRONICS EUROPE  Blacknell Lane  CREWKERNE  Somerset  UK  TA18 7HE Tel: +44 (0)1460 230010  Fax: +44 (0)1460 230011, info@mecxtal-europe.com, www.mecxtal-europe.com**

Updated at April 27, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →