# ECS-2033-240-BN

**ECS** · Oscillators · SMD2520-4P

ECS-2033-240-BN from ECS, in a SMD2520-4P. 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 | Tri-state control: VIH is 70% VDD min and VIL is 30% VDD max, and pin 1 at VIL halts internal crystal oscillation with stand-by current of 10 μA max. |
| 2 | Ground | power_in | Ground reference pin for the oscillator. |
| 3 | Output | output | CMOS clock output with VOL at 10% VDD max and VOH at 90% VDD min, specified for a 15 pF CMOS load. |
| 4 | VDD | power_in | Supply pin; the ECS-2033 (+3.3V) variant is specified from 3.135 V to 3.465 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD2520-4P |
| 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 Range |  | 0.75 |  | 75 | MHz |  | 1 |
| Operating Temperature (Extended, N Option) |  | -40 |  | 85 | °C | N Option | 1 |
| Storage Temperature |  | -55 |  | 100 | °C |  | 1 |
| Supply Voltage VDD (+3.3V) | VDD | 3.135 | 3.3 | 3.465 | VDC |  | 1 |
| Frequency Stability Option B |  | -50 |  | 50 | PPM | Option B | 1 |
| Input Current 20.1 ~ 40.0 MHz |  |  | 9 | 13 | mA | 20.1 ~ 40.0 MHz | 1 |
| Stand-by Current |  |  |  | 10 | μA | Pin 1 = VIL | 1 |
| Output Symmetry @50% VDD Level |  | 40 |  | 60 | % | @50% VDD Level | 1 |
| Rise and Fall Times |  |  |  | 10 | ns | 10% VDD to 90% Level | 1 |
| Output Load |  |  |  | 15 | pF | CMOS | 1 |
| Disable Delay Time |  |  |  | 150 | ns |  | 1 |
| Startup Time |  |  |  | 10 | ms |  | 1 |
| Aging |  | -5 |  | 5 | PPM |  | 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 | Terminal Tungsten (metalized) Plating Gold/Nickel | 2 |

## CAD (KiCad official)

- Symbol: `ECS-2033-240-BN`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-2033-240-bn-etched.step` / `ecs-2033-240-bn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-2033-240-bn.step` / `ecs-2033-240-bn.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ECS datasheet](docs/ecs-2033-240-bn-datasheet.pdf) (3 pp, sha256 `cc729ef842565494`, retrieved 2026-10-30, 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-2033-240-bn-datasheet.pdf)