Description
The HC-49SMD 22.1184 MHz is a highly reliable quartz crystal designed for precision timing in a compact, surface-mount form factor. The frequency 22.1184 MHz is legendary in the world of 8-bit microcontrollers (like the 8051 family). It was specifically chosen by engineers because it is a multiple of standard serial communication baud rates—for example, it allows for exact generation of 9600, 19200, 38400, and 57600 bps with zero percentage error.
Housed in the industry-standard HC-49SMD low-profile metal package, this crystal offers excellent mechanical durability and electrical stability. With a load capacitance of 20 pF and a tight frequency tolerance of ±20 ppm, it ensures that serial data transmissions remain stable and error-free. This pack includes two units, making it an excellent choice for hardware prototyping or multi-board designs requiring precise UART timing.
Features
- 22.1184 MHz nominal frequency (The “golden” frequency for standard baud rate generation)
- ±20 ppm high-precision frequency tolerance
- 20 pF load capacitance
- Industry-standard HC-49SMD surface-mount package
- Excellent mechanical and environmental stability
- Pack of 2 units included
Applications
- UART/Serial communication interfaces (RS-232, RS-485)
- 8051-based microcontroller systems
- Embedded communication modules
- General-purpose digital timing and synchronization
- Prototyping and industrial control hardware
Package Includes
- 2 x HC-49SMD 22.1184 MHz 20pF 20PPM 2-Pad SMD Quartz Crystal
Specifications
| Parameter | Specification |
|---|---|
| Part Number | HC-49SMD |
| Frequency | 22.1184 MHz |
| Frequency Tolerance | ±20 ppm |
| Load Capacitance | 20 pF |
| Termination Type | SMD/SMT (2-Pad) |
| Quantity | Pack of 2 |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
