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X252040MMB4SI

Yangxing Tech · Crystals · SMD2520-4P

X252040MMB4SI from Yangxing Tech, in a SMD2520-4P. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 XTAL1 passive Crystal terminal #1, one of the two diagonal crystal connections shown on the Top View Crystal Connection drawing.
2 GND power_in Marked GND on the recommended land pattern (Top View Crystal Connection); ground/case connection.
3 XTAL2 passive Crystal terminal #3, the other diagonal crystal connection, opposite pin 1.
4 GND power_in Marked GND on the recommended land pattern (Top View Crystal Connection); ground/case connection.

Key specifications

Parameter Value
Manufacturer Yangxing Tech
Package SMD2520-4P
Category Crystal Oscillator/Oscillator/Resonator
Pins 4

CAD (KiCad official)

  • Symbol: X252040MMB4SI
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: x252040mmb4si-etched.step / x252040mmb4si-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); x252040mmb4si.step / x252040mmb4si.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Yangxing Tech datasheet (1 pp, sha256 fcfea8bbb6808668, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF