component
SX2B40.000F1510F30
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Shenzhen SCTF 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
markdownSX2B40.000F1510F30
Shenzhen SCTF Elec · Crystals · SMD2520-4P
SX2B40.000F1510F30 from Shenzhen SCTF 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 1 (square-cut pad corner, bottom view), connected through the crystal element to pad 3; 40.000MHz fundamental, 15pF load capacitance. |
| 2 | COVER_2 | passive | Connected to the metal cover; the datasheet says to connect it to GND or leave it floating. |
| 3 | XTAL2 | passive | Crystal terminal 2, connected through the crystal element to pad 1; 40.000MHz fundamental, 15pF load capacitance. |
| 4 | COVER_4 | passive | Connected to the metal cover; the datasheet says to connect it to GND or leave it floating. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen SCTF 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 |
|---|---|---|---|---|---|---|---|
| Frequency tolerance at 25℃±2℃ | Δf/f | -10 | 10 | ppm | at 25℃±2℃ | 3 | |
| Temperature drift over operating temperature range | f_tem | -30 | 30 | ppm | Over operating temp. range (reference 25℃) | 3 | |
| Aging, 1st year | f_age | -3 | 3 | ppm | 1st year | 3 | |
| Negative resistance | -R | 200 | Ω | See 2.3 | 3 | ||
| Effective resistance | RR | 40 | Ω | 3 | |||
| Shunt capacitance | C0 | 3 | pF | 3 | |||
| Insulation resistance | IR | 500 | MΩ | at DC 100V | 3 | ||
| Drive level (maximum) | DL | 100 | μW | See 2.1 | 3 | ||
| Drive level (typical) | DL | 10 | μW | 3 | |||
| Spurious response | SPDB | -3 | dB | 3 | |||
| Storage temperature range | T_stg | -55 | 125 | ℃ | 3 | ||
| Operating temperature range | T_use | -40 | 85 | ℃ | 3 | ||
| Frequency change after reliability tests | ΔFL | -5 | 5 | ppm | After reliability tests | 7 | |
| Nominal frequency | f | 40 | MHz | Fundamental | 3 | ||
| Load capacitance | CL | 15 | pF | 3 |
CAD (KiCad official)
- Symbol:
SX2B40.000F1510F30 - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
sx2b40-000f1510f30-etched.step/sx2b40-000f1510f30-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sx2b40-000f1510f30.step/sx2b40-000f1510f30.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen SCTF Elec datasheet (8 pp, sha256
ac684978c0ec7587, retrieved 2026-10-21, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).