# ECS-3225MV-120-BN-TR3

**ECS** · Crystal Oscillators · SMD3225-4P

ECS-3225MV-120-BN-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 | Tri-state | input | Standby/enable input: the output is active when this pin is at 0.7 × Vdd min or left NC, and goes high impedance when at 0.3 × Vdd max. |
| 2 | Gnd | power_in | Ground reference pin for the oscillator supply. |
| 3 | Output | output | CMOS clock output, with VOL at most 10% Vdd and VOH at least 90% Vdd, specified for a 15 pF load. |
| 4 | Vdd | power_in | Supply voltage pin, specified from 1.6 V to 3.6 V (MultiVolt). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## 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 Application / Temperature Time T1 / t1 T2 / t2 | 2 |

## CAD (KiCad official)

- Symbol: `ECS-3225MV-120-BN-TR3`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-3225mv-120-bn-tr3-etched.step` / `ecs-3225mv-120-bn-tr3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-3225mv-120-bn-tr3.step` / `ecs-3225mv-120-bn-tr3.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/8756568035849183232) (4 pp, sha256 `aa69f36c1de4c570`, 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-3225mv-120-bn-tr3-datasheet.pdf)