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Contents

README

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X1E0000210624

Seiko Epson · Crystals · SMD3225-4P

X1E0000210624 from Seiko Epson, in a SMD3225-4P. 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 #1 passive Crystal terminal 1, connected to one side of the internal crystal unit (20.000000 MHz fundamental, CL 12 pF).
2 #2 passive Connected to the cover (lid) and should be connected to ground.
3 #3 passive Crystal terminal 3, connected to the other side of the internal crystal unit (20.000000 MHz fundamental, CL 12 pF).
4 #4 passive Connected to the cover (lid) and should be connected to ground.

Key specifications

Parameter Value
Manufacturer Seiko Epson
Package SMD3225-4P
Category Crystals/Oscillators/Resonators
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Storage temperature T_stg -40 125 ºC Storage as single product 1
Operating temperature (absolute maximum table) T_use -40 105 ºC 1
Frequency tolerance f_tol -10 10 x 10-6 @+25ºC 1
Frequency stability over temperature f_tem -18 18 x 10-6 -40ºC to +85ºC 1
Operating temperature T_use -40 85 ºC 1
Level of drive DL 10 100 200 µW 1
Motional resistance (ESR) R1 60 Ω 1
Frequency aging f_age -1 1 x10-6 /yea @+25ºC, First year 1
Nominal frequency f_nom 20 MHz Fundamental 1
Load capacitance CL 12 pF 1
Motional capacitance C1 2.58 fF 1
Motional inductance L1 24.54 mH 1
Shunt capacitance C0 0.98 pF 1

CAD (KiCad official)

  • Symbol: X1E0000210624
  • Footprint: Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm
  • 3D model: SMD3225-4P (KiCad packages3D, STEP)
  • 3D model files: x1e0000210624-etched.step / x1e0000210624-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); x1e0000210624.step / x1e0000210624.glb are the bare package body.

Provenance

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

  • Datasheet: Seiko Epson datasheet (3 pp, sha256 be3415eef09df708, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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