| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
23 pcs
|
23 pcs | On Request | 1 | On Request | On Request | 2014 | On Request | On Request |
| Category | |
| Manufacturer Name | |
| ESR (Equivalent Series Resistance) | |
| Frequency | |
| Frequency Stability | |
| Frequency Tolerance | |
| Height | |
| Length | |
| Load Capacitance | |
| Mounting Type | |
| Operating Mode | |
| Operating Temperature | |
| Operating Temperature Range | |
| Package / Case | |
| Type | |
| Width |
The ECS-270-18-4X-F is a 27 MHz fundamental mode quartz crystal from ECS Inc. It is designed for through-hole mounting in the low-profile HC-49/US package, measuring 11.35mm x 4.65mm with a height of 3.50mm. This crystal offers a load capacitance of 18 pF and a maximum equivalent series resistance (ESR) of 30 Ω, making it suitable for oscillator circuits requiring precise frequency control.
Frequency stability is specified at ±50 ppm over the operating temperature range of -10°C to +70°C, with an initial frequency tolerance of ±30 ppm at 25°C. The crystal operates at a drive level of 500 μW typical and features a shunt capacitance of 7 pF typical. First-year aging is limited to ±5 ppm, ensuring long-term reliability.
The HC-49USX series crystals are RoHS3 compliant and have an MSL rating of 1 (unlimited). They are commonly used in timing applications such as microcontrollers, communication devices, and consumer electronics where a stable clock source is required. The through-hole design allows for easy manual assembly and prototyping.
27 MHz.
18 pF.
-10°C to +70°C.
HC-49/US through-hole.
Yes, RoHS3 compliant.
±30 ppm at 25°C.
30 Ω.