component
ECS-245.7-12-33Q-JES-TR
Public Made by Adomby adom
ECS Crystals, SMD3225-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ECS-245.7-12-33Q-JES-TR
ECS · Crystals · SMD3225-4P
ECS-245.7-12-33Q-JES-TR from ECS, 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 | In/Out | passive | Crystal terminal; the crystal is symmetrical, so pad 1 and pad 3 are interchangeable. |
| 2 | Gnd | power_in | Ground pad connection as printed in the Pad Connections table; the chamfer on the bottom pad has no electrical significance. |
| 3 | Out/In | passive | Crystal terminal; the crystal is symmetrical, so pad 3 and pad 1 are interchangeable. |
| 4 | Gnd | power_in | Ground pad connection as printed in the Pad Connections table; the chamfer on the bottom pad has no electrical significance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency range | 12 | 40 | MHz | 1 | |||
| Frequency tolerance | -20 | 20 | ppm | @ +25°C; P/N code J = ±20 ppm | 1 | ||
| Frequency stability | -50 | 50 | ppm | P/N code E = ±50 ppm; temp range S (-40 ~ +125°C) | 1 | ||
| Aging (first year) | -5 | 5 | ppm | First year @ +25°C ±3°C | 1 | ||
| Shunt capacitance | Co | 7 | pF | 1 | |||
| Equivalent series resistance (ESR) | ESR | 40 | Ω | Frequency 24.000 ~ 40.000 MHz | 1 | ||
| Drive level | DL | 100 | μW | 1 | |||
| Operating temperature | Topr | -40 | 125 | °C | P/N temp range code S (-40 ~ +125°C) | 1 | |
| Storage temperature | Tstg | -55 | 125 | °C | 1 | ||
| Peak solder temperature | 260 | °C | Peak solder; max 10 sec; 2 cycles max | 2 | |||
| Nominal frequency | 24.576 | MHz | P/N 245.7 = 24.576 MHz | 2 | |||
| Load capacitance | 12 | pF | P/N code 12 | 1 |
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 | MSL 1, Lead Finish Au POCKET TAPE DIMENSIONS (mm) | 2 |
CAD (KiCad official)
- Symbol:
ECS-245.7-12-33Q-JES-TR - Footprint:
Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm - 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files:
ecs-245-7-12-33q-jes-tr-etched.step/ecs-245-7-12-33q-jes-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ecs-245-7-12-33q-jes-tr.step/ecs-245-7-12-33q-jes-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ECS datasheet (2 pp, sha256
c0df4dfd11badf1f, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# ECS-245.7-12-33Q-JES-TR
**ECS** · Crystals · SMD3225-4P
ECS-245.7-12-33Q-JES-TR from ECS, 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 | In/Out | passive | Crystal terminal; the crystal is symmetrical, so pad 1 and pad 3 are interchangeable. |
| 2 | Gnd | power_in | Ground pad connection as printed in the Pad Connections table; the chamfer on the bottom pad has no electrical significance. |
| 3 | Out/In | passive | Crystal terminal; the crystal is symmetrical, so pad 3 and pad 1 are interchangeable. |
| 4 | Gnd | power_in | Ground pad connection as printed in the Pad Connections table; the chamfer on the bottom pad has no electrical significance. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency range | | 12 | | 40 | MHz | | 1 |
| Frequency tolerance | | -20 | | 20 | ppm | @ +25°C; P/N code J = ±20 ppm | 1 |
| Frequency stability | | -50 | | 50 | ppm | P/N code E = ±50 ppm; temp range S (-40 ~ +125°C) | 1 |
| Aging (first year) | | -5 | | 5 | ppm | First year @ +25°C ±3°C | 1 |
| Shunt capacitance | Co | | | 7 | pF | | 1 |
| Equivalent series resistance (ESR) | ESR | | | 40 | Ω | Frequency 24.000 ~ 40.000 MHz | 1 |
| Drive level | DL | | | 100 | μW | | 1 |
| Operating temperature | Topr | -40 | | 125 | °C | P/N temp range code S (-40 ~ +125°C) | 1 |
| Storage temperature | Tstg | -55 | | 125 | °C | | 1 |
| Peak solder temperature | | | | 260 | °C | Peak solder; max 10 sec; 2 cycles max | 2 |
| Nominal frequency | | | 24.576 | | MHz | P/N 245.7 = 24.576 MHz | 2 |
| Load capacitance | | | 12 | | pF | P/N code 12 | 1 |
## 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 | MSL 1, Lead Finish Au POCKET TAPE DIMENSIONS (mm) | 2 |
## CAD (KiCad official)
- Symbol: `ECS-245.7-12-33Q-JES-TR`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-245-7-12-33q-jes-tr-etched.step` / `ecs-245-7-12-33q-jes-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-245-7-12-33q-jes-tr.step` / `ecs-245-7-12-33q-jes-tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ECS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588934880947785728) (2 pp, sha256 `c0df4dfd11badf1f`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/ecs-245-7-12-33q-jes-tr-datasheet.pdf)