The HC-49USX is a low-profile, through-hole quartz crystal designed for stable frequency generation in electronic circuits. It is packaged in a through-hole case with dimensions specified for the HC-49USX series and operates over a temperature range of -10°C to +70°C. The crystal supports frequencies from 3.570 MHz to 70.000 MHz, with a frequency tolerance of ±30 ppm at +25°C and frequency stability of ±50 ppm across the operating range. Load capacitance is user-specifiable, and drive level is limited to 500 μW. The device is RoHS compliant, has a shunt capacitance of 7 pF, and meets MSL 1 moisture sensitivity level. ESR values vary by frequency, with a maximum of 200 Ω for 3.570-3.999 MHz and 100 Ω for 27.000-70.000 MHz in third overtone mode. Aging is specified at ±5 ppm over the first year at +25°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.
10MHz ±30ppm Crystal 20pF 60 Ohms HC-49/US
| ECS Inc. International | DigiKey | Acme Chip Technology Co., Limited | |
|---|---|---|---|
| Product Category | Crystals | Crystals | Crystals |
| Product Number | ECS-100-20-4X-DU | XC1923-ND | ECS-100-20-4X-DU |
| Product Name | Through Hole Crystals | Crystals | Crystals |
| Package / Form Factor | Through Hole Crystals | Through Hole; HC-49/US | Through Hole |
| Features / Standards | RoHS | Lead-Free | |
| Frequency | 10 MHz | 10 MHz | |
| Frequency Stability | 100 ppm | 100 ppm |
