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Contents

README

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8Z40000030

TXC Corp · Crystals · SMD2520-4P

8Z40000030 from TXC Corp, 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 (pin 1 marked by dot on lid) for the 40.000000 MHz fundamental AT-cut crystal, with 8 pF load capacitance specified.
2 GND power_in Ground connection, labelled GND in the connection diagram.
3 XTAL2 passive Second crystal terminal for the 40.000000 MHz fundamental AT-cut crystal, diagonal to pin 1.
4 GND power_in Ground connection, labelled GND in the connection diagram.

Key specifications

Parameter Value
Manufacturer TXC Corp
Package SMD2520-4P
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
Frequency Tolerance -7 7 ppm at 25 ℃ ± 3 ℃ 5
Frequency Stability -13 13 ppm over operating temperature range (reference 25℃) 5
Aging -1 1 ppm 1st year 5
Operating Temperature -40 90 ℃ 5
Storage Temperature Range -40 125 ℃ storage 5
Drive Level DL 100 uW 5
Equivalent Series Resistance Rr 40 Ω 5
Insulation Resistance 500 MΩ at DC 100V 5
Shunt Capacitance C0 3 pF 5
Load Capacitance CL 8 pF 5
Nominal Frequency FL 40 MHz fundamental mode, AT cut 5
Suggested reflow total time 200 sec suggested reflow profile, total time 6

CAD (KiCad official)

  • Symbol: 8Z40000030
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: 8z40000030-etched.step / 8z40000030-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 8z40000030.step / 8z40000030.glb are the bare package body.

Provenance

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

  • Datasheet: TXC Corp datasheet (11 pp, sha256 7f8dcb4e03ce1406, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+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