Description
X252012MMB4SI-24 12MHz ±10ppm 10pF SMD2520-4P Passive SMD Crystal
General Description
The X252012MMB4SI-24 is a 12.000 MHz passive quartz crystal resonator in a compact SMD 2520-4P (2.5 × 2.0 mm) package. It provides precise frequency control for microcontrollers, communication modules, and timing circuits requiring tight stability and low load capacitance.
⚙️ Key Specifications
| Parameter |
Specification |
| Nominal Frequency (f₀) |
12.000 MHz |
| Frequency Tolerance (at 25 °C) |
±10 ppm |
| Frequency Stability (over –40 °C to +85 °C) |
±10 ppm (typ.) |
| Load Capacitance (C<sub>L</sub>) |
10 pF |
| Shunt Capacitance (C<sub>0</sub>) |
≤ 7 pF |
| Drive Level |
100 µW (typ.), max 200 µW |
| Equivalent Series Resistance (ESR) |
≤ 60 Ω |
| Aging (First Year) |
±3 ppm max |
| Operating Temperature Range |
–40 °C to +85 °C |
| Storage Temperature Range |
–55 °C to +125 °C |
| Package Type |
SMD 2520 (4-Pad) |
| Mounting Type |
Surface Mount |
| Terminal Finish |
Au plated (gold) |
| RoHS / REACH |
Compliant |
| Environmental Compliance |
Pb-Free, Halogen-Free |
📐 Mechanical Dimensions (SMD2520-4P)
| Dimension |
Value (mm) |
| Length (L) |
2.50 ± 0.10 |
| Width (W) |
2.00 ± 0.10 |
| Height (H) |
0.55 max |
| Pad Pitch |
1.20 typ. |
| Pad Size |
0.8 × 0.8 mm |
💡 Main Features
High frequency accuracy (±10 ppm tolerance)
Compact 2.5 × 2.0 mm footprint for space-constrained designs
Excellent temperature stability and low aging rate
Ideal for low-power microcontrollers and wireless applications
Reflow soldering compatible (up to 260 °C)
RoHS and Pb-free compliant
⚙️ Typical Applications
MCU and DSP clock generation (e.g. STM32, ESP32, CH32, etc.)
USB, UART, CAN, or Ethernet communication timing
RF modules and wireless transceivers (e.g. 433 MHz / 2.4 GHz)
Smart sensors, meters, and wearable electronics
Industrial control and automation systems
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