# ECS-163.84-18-33-JGN-TR

**ECS** · Crystals · SMD3225-4P

ECS-163.84-18-33-JGN-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 that is electrically interchangeable with pad 3 because the crystal is symmetrical, and the bottom chamfer position has no electrical significance. |
| 2 | Gnd | power_in | Ground connection for the crystal package as stated in the pad connection table. |
| 3 | Out/In | passive | Crystal terminal that is electrically interchangeable with pad 1 because the crystal is symmetrical. |
| 4 | Gnd | power_in | Ground connection for the crystal package; the bottom chamfer may be located on this pad or on pad 1 with 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 |  | 8 |  | 54 | MHz | Family range as printed; MPN frequency code 163.84 not verified (see review) | 1 |
| Frequency tolerance @ +25°C |  | -20 |  | 20 | ppm | @ +25°C; P/N tolerance code J = ±20 ppm | 1 |
| Frequency stability |  | -30 |  | 30 | ppm | P/N stability code G = ±30 ppm; temp range code N (-40 ~ +85°C) | 1 |
| Aging (first year) |  | -5 |  | 5 | ppm | @ +25°C ±3°C, first year | 1 |
| Load capacitance |  | 4 | 18 | 20 | pF | Specify in P/N; MPN code 18 = 18 pF; Series | 1 |
| Shunt capacitance | Co |  |  | 5 | pF |  | 1 |
| Drive level | DL |  |  | 100 | μW |  | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 400 | Ω | Frequency 8.000 ~ 9.999 MHz | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 100 | Ω | Frequency 10.000 ~ 15.999 MHz | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 80 | Ω | Frequency 16.000 ~ 19.999 MHz | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 60 | Ω | Frequency 20.000 ~ 23.999 MHz | 1 |
| Equivalent series resistance (ESR) | ESR |  |  | 40 | Ω | Frequency 24.000 ~ 54.000 MHz | 1 |
| Operating temperature | Topr | -40 |  | 85 | °C | Temp range code N per P/N guide (-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-163.84-18-33-JGN-TR`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-163-84-18-33-jgn-tr-etched.step` / `ecs-163-84-18-33-jgn-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-163-84-18-33-jgn-tr.step` / `ecs-163-84-18-33-jgn-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/8590905982031908864) (2 pp, sha256 `7f56a768dd3d4594`, 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-163-84-18-33-jgn-tr-datasheet.pdf)