IQD offers MHz quartz crystals from 0.5 MHz to 250 MHz for electronic designs that need a reliable frequency reference. These crystals are used in applications including wireless communications, Ethernet, industrial systems, IoT and wearable devices, optical networks, audio and multimedia equipment, and test and measurement instruments.
The right crystal depends on your design’s frequency, stability, package and operating environment. IQD’s MHz crystal portfolio includes a range of package formats and performance options to support different application requirements. App Note | How to Specify MHz Quartz Crystals
Depending on the selected part number, IQD MHz quartz crystals are available with:
IQD also offers higher-frequency options in fundamental mode. Check the individual product specifications to confirm availability and suitability for your design.
Call IQD to request a quote or place an order, our team supports customers worldwide with enquiries about IQD frequency products, including quartz crystals and oscillators. Alternatively, you can purchase through authorized distribution partners. Contact Us

IQD is also a global distribution partner for Statek Corporation’s highly specialised photolithographic process based quartz crystals and oscillators that offer very high environmental performance.
| Model/Series | Package (mm) | Frequency Range MHz | Frequency Tolerance (Tightest) | Operating Temperature (Widest) | Key Feature |
| IQXC-240 | 1.2 x 1.0 | 32 to 80 | ±7 ppm | -40 to 85 °C | Miniature package |
| IQXC-26 | 1.6 x 1.2 | 24 to 80 | ±10 ppm | -40 to 85 °C | Industry standard 4 pad |
| IQXC-42 | 2.0 x 1.6 | 16 to 50 | ±10 ppm | -40 to 125 °C | Industry standard 4 pad |
| CFPX-218 | 2.5 x 2.0 | 12 to 50 | ±10 ppm | -40 to 85 °C | Industry standard 4 pad |
| CFPX-180 | 3.2 x 2.5 | 10 to 200 | ±10 ppm | -40 to 125 °C | Industry standard 4 pad |
| CFPX-104 | 5.0 x 3.2 | 8 to 133 | ±10 ppm | -40 to 85 °C | Industry standard 4 pad |
| 12SMX | 7.0 x 5.0 | 6 to 84 | ±20 ppm | -40 to 85 °C | Industry standard 2 & 4 pad |
| HC49/4HSMX | 13.4 x 4.9 | 3.2 x 100 | ±10 ppm | -55 to 105 °C | Industry standard metal can SMT |
| HC49 | 11.05 x 4.65 | 1.8432 to 270 | ±5 ppm | -55 to 125 °C | Industry standard metal can THT |
| HC49/4H | 11.05 x 4.7 | 3.2 to 100 | ±10 ppm | -55 to 105 °C | Industry standard metal can THT |
CFPX-180 – Industry standard, low-height SMD, 3.2 x 2.5mm. Remote control systems, wireless charging, wearable monitors for elderly patients, smart hubs, smoke alarms and more.
CFPX-104 – Industry standard, SMD crystal,5.0 x 3.2 mm. Recently used in manufacture of wind turbines.
HC49/4HSMX – Industry standard, SMD crystal package. Recently used in temperature control units, arcade gaming entertainment systems
HC49/4H – Industry standard leaded package – Recent applications include: EV charging points, ticket machines, 4G adapters, smart meters, data analysers
HC49 – Industry standard leaded package – Recent applications include: Railway signalling and communication systems
IQXC-26 – Industry standard, low height SMD, 1.6 x 1.2 mm – Recent applications include tracking devices, microcontrollers and mini card reader
IQXC-42 – Industry standard, SMD, 2.0 x 1.6 mm – Recent applications include industrial telemetry, tracking devices, Bluetooth radio, room climate control panel
12SMX-B – Industry standard, SMD, 7.0 x 5.0 mm – Recent applications include: Energy meters, automation systems, Motor-assisted therapy devices, fire alarm systems for the deaf, robot control
87SMX – Industry standard product, SMD, 13.1 x 5.0 mm – Recent applications include fetal Doppler (ultrasound device)
UM1 – Industry standard THT product – Recent applications include farm animal ear tagging and monitoring
Learn more about other frequency products from IQD...
For more information about any of our parts or for help with your design-in, you can contact our Sales Team, Application Support or Engineering on +44 (0) 1460 270200, or click Contact Us below to submit your enquiry.

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