The HC-49USSX is a low-profile (2.3 mm maximum), resistance-welded thru-hole quartz crystal designed for stable frequency generation. It operates within a temperature range of -10°C to +70°C with a frequency stability of ±50 ppm over that range and a frequency tolerance of ±30 ppm at +25°C. The load capacitance is user-specified via part number, and the maximum drive level is 500 μW. It is RoHS compliant and has a shunt capacitance of 5 pF. Frequency ranges from 3.570 MHz to 50.000 MHz, with fundamental mode up to 30.000 MHz and third overtone for higher frequencies. ESR varies with frequency, ranging from 40 Ω to 150 Ω. The MSL rating is 1, and storage temperature spans -55°C to +125°C.
Despite the rise in popularity of surface mount technology (SMT) in passive components, through hole packaging has remained an industry staple for eight decades for a reason. The simplicity and efficacy of this technology, along with its ability to be incorporated into a vast array of designs, make it an excellent choice for many different applications.
Crystals with through hole packing are ideal for larger components that will undergo a significant amount of mechanical stress, high voltage, and/or high power. This is because through hole soldering results in a stronger bond between the passive components and the circuit board. Example applications include transformers, connectors, semiconductors and electrolytic capacitors.
Other advantages to using through hole-mounted components include the compact design to decrease the component’s footprint on the circuit board, exceptional shock and vibration resistance, low frequencies and options for industrial temperature ranges and excellent aging and component longevity and durability.
| ECS Inc. International | DigiKey | |
|---|---|---|
| Product Category | Crystals | Crystals |
| Product Number | ECS-36-20-4VX | XC1569-ND |
| Product Name | Through Hole Crystals | Crystals |
| Package / Form Factor | Through Hole Crystals | Through Hole; HC-49/US |
| Features / Standards | RoHS | Lead-Free |
| Frequency | 3.69 MHz | |
| Frequency Stability | 50 ppm | 50 ppm |
