# ECS-2520MVQ-1250-BS-TR

**ECS** · Oscillators · SMD2520-4P

ECS-2520MVQ-1250-BS-TR 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: output active when pin is at 0.7*Vdd min or left NC, high impedance when at 0.3*Vdd max. |
| 2 | Gnd | power_in | Ground connection. |
| 3 | Output | output | CMOS clock output, rated for 15 pF load with VOL 0.2 Vdd max and VOH 0.8 Vdd min. |
| 4 | Vdd | power_in | Supply voltage input, 1.6 V to 3.6 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 Stability |  | -50 |  | 50 | ppm | -40 ~ +85°C (BN Opt); code B = ±50 ppm | 1 |
| Supply Voltage | Vdd | 1.6 |  | 3.6 | V |  | 1 |
| Input Current (No Load) |  |  |  | 20 | mA | 50.100 ~ 160.000 MHz | 1 |
| Standby Current |  |  |  | 10 | µA |  | 1 |
| Output Voltage Low | VOL |  |  | 0.2 | Vdd | CMOS 15 pF | 1 |
| Output Voltage High | VOH | 0.8 |  |  | Vdd | CMOS 15 pF | 1 |
| Duty Cycle |  | 45 |  | 55 | % | @ ½ Vdd | 1 |
| Rise & Fall time |  |  |  | 7 | ns | 20% Vdd, 80% Vdd | 1 |
| Start Up Time |  |  |  | 10 | mS |  | 1 |
| Aging |  | -3 |  | 3 | ppm | Per year | 1 |
| Operating Temp |  | -40 |  | 125 | °C | Option S = -40 ~ +125°C | 1 |
| Storage Temp |  | -55 |  | 125 | °C |  | 1 |
| Tri-state Pin 1 High (Output Active) |  | 0.7 |  |  | Vdd | Pin 1 0.7 * Vdd Min or NC: Active | 1 |
| Tri-state Pin 1 Low (High Impedance) |  |  |  | 0.3 | Vdd | Pin 1 0.3 * Vdd Max: High Impedance | 1 |
| Peak Solder Temp |  |  | 260 |  | °C | ±5°C, 10 ±5 Sec Max., 2 cycles max | 2 |
| Output Frequency |  |  | 125 |  | MHz | Code 1250 = 125.000 MHz | 2 |
| Phase Jitter |  |  | 1 |  | pS | 12 kHz to 20 MHz | 1 |
| Output Load |  |  | 15 |  | pF | CMOS | 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 DEVELOPED FREQUENCIES | 2 |

## CAD (KiCad official)

- Symbol: `ECS-2520MVQ-1250-BS-TR`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-2520mvq-1250-bs-tr-etched.step` / `ecs-2520mvq-1250-bs-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-2520mvq-1250-bs-tr.step` / `ecs-2520mvq-1250-bs-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ECS datasheet](docs/ecs-2520mvq-1250-bs-tr-datasheet.pdf) (2 pp, sha256 `754d353948edf783`, retrieved 2026-10-30, 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-2520mvq-1250-bs-tr-datasheet.pdf)