# ECS-TXO32-S3-33-100-BN-TR

**ECS** · Temperature Compensated Crystal Oscillators (TCXOs) · SMD3225-4P

ECS-TXO32-S3-33-100-BN-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 | N/C | unconnected | No connection on the ECS-TXO32-S3 (non-VC) version; this pin is the Voltage Control input only on the ECS-VC-TXO32-S3 variant. |
| 2 | GND | power_in | Ground connection. |
| 3 | OUTPUT | output | Clipped sine wave output, 0.8 V p-p into a 10KΩ//10 pF load. |
| 4 | VDD | power_in | Supply voltage, +3.3 V nominal (+3.135 V to +3.465 V) for the 33 option. |

## 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 Tolerance |  | -1 |  | 1 | ppm | Ref to freq @ +25°C ±2°C, Vcc = 3.3V, within 30 days ex-works | 1 |
| Frequency Stability vs Temperature |  | -280 |  | 280 | ppb | See Note 1 | 1 |
| Frequency Stability vs Supply |  | -0.1 |  | 0.1 | ppm | Supply Change (±5%), with 10KΩ//10 pF load | 1 |
| Frequency Stability vs Load |  | -0.1 |  | 0.1 | ppm | Load Change (±5%), Ref +25°C, Vcc 3.3V | 1 |
| Aging/day |  | -0.02 |  | 0.02 | ppm | Aging @ +25°C, Vcc = 3.3V, after 1hr of operation | 1 |
| Aging/year |  | -1 |  | 1 | ppm | Aging @ +25°C, Vcc = 3.3V, after 1hr of operation | 1 |
| Overall Stability |  | -4.6 |  | 4.6 | ppm | See Note 2 | 1 |
| Frequency Range |  | 9.6 |  | 50 | MHz |  | 1 |
| Supply Voltage | VDD | 3.135 | 3.3 | 3.465 | VDC | 33 Option | 1 |
| Current Consumption |  |  |  | 3 | mA | Ref 25°C, Vcc=3.3V, Vc=1.5V Cload=10KΩ//10pF | 1 |
| Start-up Time |  |  |  | 2 | mS |  | 1 |
| Output Level |  | 0.8 |  |  | V p-p | Clipped Sine Wave | 1 |
| Operating Temperature |  | -40 |  | 85 | °C | N Option | 1 |
| Storage Temperature |  | -55 |  | 105 | °C |  | 1 |
| Phase Noise @ 10 Hz offset |  |  | -90 | -85 | dBc/Hz | @ 10.000 MHz, 10 Hz Offset | 1 |
| Phase Noise @ 100 Hz offset |  |  | -120 | -115 | dBc/Hz | @ 10.000 MHz, 100 Hz Offset | 1 |
| Phase Noise @ 1 kHz offset |  |  | -140 | -135 | dBc/Hz | @ 10.000 MHz, 1 KHz Offset | 1 |
| Phase Noise @ 10 kHz offset |  |  | -145 | -140 | dBc/Hz | @ 10.000 MHz, 10 KHz Offset | 1 |
| Phase Noise @ 100 kHz offset |  |  | -148 | -143 | dBc/Hz | @ 10.000 MHz, 100 KHz Offset | 1 |
| Nominal Frequency |  |  | 10 |  | MHz | Code 100 = 10.000 MHz | 2 |

## 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 | • Lead Finish Au Part Numbering Guide: Example ECS-TXO32-S3-33-200-BN-TR | 1 |

## CAD (KiCad official)

- Symbol: `ECS-TXO32-S3-33-100-BN-TR`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-txo32-s3-33-100-bn-tr-etched.step` / `ecs-txo32-s3-33-100-bn-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-txo32-s3-33-100-bn-tr.step` / `ecs-txo32-s3-33-100-bn-tr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ECS datasheet](docs/ecs-txo32-s3-33-100-bn-tr-datasheet.pdf) (2 pp, sha256 `0e2c3042b8890da3`, retrieved 2026-10-31, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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-txo32-s3-33-100-bn-tr-datasheet.pdf)