component
Q25000C018
Public Made by Adomby adom
ECEC(ZheJiang E ast Crystal Elec) Crystals, SMD2520-4P. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownQ25000C018
ECEC(ZheJiang E ast Crystal Elec) · Crystals · SMD2520-4P
Q25000C018 from ECEC(ZheJiang E ast Crystal Elec), 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 connected to the quartz element (marked with the chamfered pad corner), for the 25.000000 MHz fundamental-mode crystal with 10 pF load capacitance. |
| 2 | CASE_GND | passive | Pad connected to the metal cover (lid) and not to the quartz element, normally grounded or left unconnected. |
| 3 | XTAL2 | passive | Crystal terminal connected to the quartz element, the second oscillator connection for the 25.000000 MHz crystal. |
| 4 | CASE_GND | passive | Pad connected to the metal cover (lid) and not to the quartz element, normally grounded or left unconnected. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECEC(ZheJiang E ast Crystal Elec) |
| 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 |
|---|---|---|---|---|---|---|---|
| Equivalent Resistance | Rr | 60 | Ω | 3 | |||
| Shunt Capacitance | C0 | 2 | pF | 3 | |||
| Insulation Resistance | 500 | MΩ | at DC 100V | 3 | |||
| Frequency Tolerance | -10 | 10 | ppm | 3 | |||
| Temperature drift (TC) | -10 | 10 | ppm | 3 | |||
| Aging | -2 | 2 | ppm | First Year | 3 | ||
| Operating Temperature | -20 | 70 | ℃ | 3 | |||
| Storage Temperature Range | -55 | 125 | ℃ | 3 | |||
| Nominal Frequency | FL | 25 | MHz | 3 | |||
| Drive Level | DL | 100 | uW | 3 |
CAD (KiCad official)
- Symbol:
Q25000C018 - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
q25000c018-etched.step/q25000c018-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);q25000c018.step/q25000c018.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ECEC(ZheJiang E ast Crystal Elec) datasheet (10 pp, sha256
cfd5efdc58b96a52, retrieved 2026-10-21, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).