# ECS-200-12-33Q-JES-TR

**ECS** · Crystals · SMD3225-4P

ECS-200-12-33Q-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 labeled In/Out; pads 1 and 3 are interchangeable because the crystal is symmetrical, and the datasheet states no electrical limits for this pad. |
| 2 | Gnd | power_in | Ground pad as labeled Gnd in the datasheet pad connections; the datasheet gives no further electrical limits for it. |
| 3 | Out/In | passive | Crystal terminal labeled Out/In; pads 1 and 3 are interchangeable because the crystal is symmetrical, and the datasheet states no electrical limits for this pad. |
| 4 | Gnd | power_in | Ground pad as labeled Gnd in the datasheet pad connections; the datasheet gives no further electrical limits for it. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD3225-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| 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 |
|---|---|---|---|---|---|---|---|
| Equivalent Series Resistance (ESR) max, 20.000 ~ 23.999 MHz band |  |  |  | 60 | Ω | 20.000 ~ 23.999 MHz | 1 |
| Frequency Tolerance (tolerance code J, decoded from P/N) |  | -20 |  | 20 | ppm | @ +25°C | 1 |
| Aging (First Year) |  | -5 |  | 5 | ppm | @ +25°C ±3°C | 1 |
| Load Capacitance (Specify in P/N; this P/N code 12 = 12 pF) |  | 6 | 12 | 20 | pF | Specify in P/N | 1 |
| Shunt Capacitance | Co |  |  | 7 | pF |  | 1 |
| Drive Level | DL |  |  | 100 | μW |  | 1 |
| Operating Temperature (temp code S, decoded from P/N) | Topr | -40 |  | 125 | °C | Temp range code S per P/N guide | 1 |
| Storage Temperature | Tstg | -55 |  | 125 | °C |  | 1 |
| Nominal Frequency (P/N code 200 = 20.000 MHz) |  |  | 20 |  | MHz |  | 1 |

## CAD (KiCad official)

- Symbol: `ECS-200-12-33Q-JES-TR`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-200-12-33q-jes-tr-etched.step` / `ecs-200-12-33q-jes-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-200-12-33q-jes-tr.step` / `ecs-200-12-33q-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/8589814670954962944) (2 pp, sha256 `a6b1a2f2b9a74cec`, retrieved 2026-10-15, 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-200-12-33q-jes-tr-datasheet.pdf)