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Q24FA20H00491
Public Made by Adomby adom
Seiko Epson Crystals, SMD2520-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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Q24FA20H00491
Seiko Epson · Crystals · SMD2520-4P
Q24FA20H00491 from Seiko Epson, 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 | Xtal | passive | Crystal terminal (Xtal); isolation resistance of 500 MΩ min. at DC 100 V is specified between terminal #1 and terminal #3. |
| 2 | GND | power_in | Ground terminal, connected to GND per the pin connection table. |
| 3 | Xtal | passive | Crystal terminal (Xtal); isolation resistance of 500 MΩ min. at DC 100 V is specified between terminal #1 and terminal #3. |
| 4 | GND | power_in | Ground terminal, connected to GND per the pin connection table. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| 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 |
|---|---|---|---|---|---|---|---|
| Storage temperature range | T_stg | -40 | 125 | °C | Depends on the Environmental characteristics specifications | 3 | |
| Operating temperature range | T_use | -40 | 85 | °C | 3 | ||
| Level of drive | DL | 200 | µW | Recommended : 100 µW | 3 | ||
| Frequency tolerance | f_tol | -10 | 10 | × 10-6 | CL = 10pF, Ta = +25 ±3°C, DL = 100 μW, Not include aging | 3 | |
| Motional resistance | R1 | 48 | Ω | π circuit IEC 60444-2, Ta = Operating temperature range, DL = 100 μW | 3 | ||
| Shunt capacitance | C0 | 2 | pF | π circuit and N.A. | 3 | ||
| Frequency temperature characteristics | f_tem | -20 | 20 | × 10-6 | Ta = Operating temperature range (Ref. at Ta = +25 °C ±3 °C), DL = 100 μW | 3 | |
| Isolation resistance | IR | 500 | MΩ | DC 100 V±15, 60 seconds, Between terminal # 1 and terminal # 3 | 3 | ||
| Frequency aging | f_age | -1 | 1 | × 10-6/year | 12 < f_nom ≤ 40 MHz, Ta = +25 °C ±3 °C | 3 | |
| Nominal frequency | f_nom | 24 | MHz | Fundamental | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | gold | Terminal #2、#4：GND Terminal treatment ：Au plate | 5 |
CAD (KiCad official)
- Symbol:
Q24FA20H00491 - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
q24fa20h00491-etched.step/q24fa20h00491-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);q24fa20h00491.step/q24fa20h00491.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seiko Epson datasheet (7 pp, sha256
cd63f92da317b021, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# Q24FA20H00491
**Seiko Epson** · Crystals · SMD2520-4P
Q24FA20H00491 from Seiko Epson, 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 | Xtal | passive | Crystal terminal (Xtal); isolation resistance of 500 MΩ min. at DC 100 V is specified between terminal #1 and terminal #3. |
| 2 | GND | power_in | Ground terminal, connected to GND per the pin connection table. |
| 3 | Xtal | passive | Crystal terminal (Xtal); isolation resistance of 500 MΩ min. at DC 100 V is specified between terminal #1 and terminal #3. |
| 4 | GND | power_in | Ground terminal, connected to GND per the pin connection table. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| 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 |
|---|---|---|---|---|---|---|---|
| Storage temperature range | T_stg | -40 | | 125 | °C | Depends on the Environmental characteristics specifications | 3 |
| Operating temperature range | T_use | -40 | | 85 | °C | | 3 |
| Level of drive | DL | | | 200 | µW | Recommended : 100 µW | 3 |
| Frequency tolerance | f_tol | -10 | | 10 | × 10-6 | CL = 10pF, Ta = +25 ±3°C, DL = 100 μW, Not include aging | 3 |
| Motional resistance | R1 | | | 48 | Ω | π circuit IEC 60444-2, Ta = Operating temperature range, DL = 100 μW | 3 |
| Shunt capacitance | C0 | | | 2 | pF | π circuit and N.A. | 3 |
| Frequency temperature characteristics | f_tem | -20 | | 20 | × 10-6 | Ta = Operating temperature range (Ref. at Ta = +25 °C ±3 °C), DL = 100 μW | 3 |
| Isolation resistance | IR | 500 | | | MΩ | DC 100 V±15, 60 seconds, Between terminal # 1 and terminal # 3 | 3 |
| Frequency aging | f_age | -1 | | 1 | × 10-6/year | 12 < f_nom ≤ 40 MHz, Ta = +25 °C ±3 °C | 3 |
| Nominal frequency | f_nom | | 24 | | MHz | Fundamental | 3 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | | gold | Terminal #2、#4：GND Terminal treatment ：Au plate | 5 |
## CAD (KiCad official)
- Symbol: `Q24FA20H00491`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `q24fa20h00491-etched.step` / `q24fa20h00491-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `q24fa20h00491.step` / `q24fa20h00491.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Seiko Epson datasheet](docs/q24fa20h00491-datasheet.pdf) (7 pp, sha256 `cd63f92da317b021`, 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](docs/q24fa20h00491-datasheet.pdf)