component
ECS-120-12-33-AGN-TR3
Public Made by Adomby adom
ECS Crystals, SMD3225-4P. Pinout cross-checked by two models 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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Contents
README
markdownECS-120-12-33-AGN-TR3
ECS · Crystals · SMD3225-4P
ECS-120-12-33-AGN-TR3 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 labelled In/Out; pads 1 and 3 are interchangeable and have no electrical significance per the datasheet. |
| 2 | Gnd | power_in | Ground pad that connects the crystal case to circuit ground. |
| 3 | Out/In | passive | Crystal terminal labelled Out/In; pads 1 and 3 are interchangeable and have no electrical significance per the datasheet. |
| 4 | Gnd | power_in | Ground pad; the chamfer on the bottom may be on pad 4 or pad 1 and has no electrical significance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD3225-4P |
| Category | Resonators/Oscillators |
| 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 | 12 | MHz | Nominal for MPN 120 (12.000 MHz) | 1 | |||
| Frequency Tolerance | -25 | 25 | ppm | @ +25°C, suffix A (±25 ppm) | 1 | ||
| Frequency Stability | -30 | 30 | ppm | -40 ~ +85°C, suffix G (±30 ppm) | 1 | ||
| Aging (First Year) | -5 | 5 | ppm | @ +25°C ±3°C | 1 | ||
| Shunt Capacitance | Co | 5 | pF | 1 | |||
| Load Capacitance | 4 | 12 | 20 | pF | Specify in P/N (Series) | 1 | |
| Drive Level | DL | 100 | μW | 1 | |||
| Equivalent Series Resistance | ESR | 100 | Ω | 10.000 ~ 15.999 MHz | 1 | ||
| Operating Temperature | Topr | -40 | 85 | °C | Suffix N (-40 ~ +85°C) | 1 | |
| Storage Temperature | Tstg | -55 | 125 | °C | 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-120-12-33-AGN-TR3 - Footprint:
Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm - 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files:
ecs-120-12-33-agn-tr3-etched.step/ecs-120-12-33-agn-tr3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ecs-120-12-33-agn-tr3.step/ecs-120-12-33-agn-tr3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ECS datasheet (2 pp, sha256
7f56a768dd3d4594, retrieved 2026-10-28, 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).