# HY20MSMD2520-3.3V

**Huiyuan crystal** · Crystal Oscillators · SMD2520-4P

HY20MSMD2520-3.3V from Huiyuan crystal, 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 output enable control pin; standby current is stated as ≤15µA. |
| 2 | Ground | power_in | Ground connection for the oscillator. |
| 3 | Output | output | Square wave output at 20.000000MHz or 25.000000MHz, with 15pF load, logic 1 ≥90% VDD, logic 0 ≤10% VDD and 45%~55% duty. |
| 4 | VDD | power_in | Supply voltage pin, 3.3V±0.1V, with supply current ≤10mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Huiyuan crystal |
| Package | SMD2520-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | -0.1 | 3.3 | 0.1 | V | 3.3V±0.1V | 1 |
| Load Capacitance | CL |  | 15 |  | pF |  | 1 |
| Frequency Tolerance |  | -20 |  | 20 | PPM | 25±3℃ | 1 |
| Frequency-Load Stability |  | -20 |  | 20 | PPM |  | 1 |
| Frequency-Vs Stability |  | -20 |  | 20 | PPM |  | 1 |
| Vc Input Impedance |  | 500 |  |  | KΩ |  | 1 |
| Duty |  | 45 |  | 55 | % |  | 1 |
| Output Level Logic 1 |  | 90 |  |  | %VDD | Logic 1 | 1 |
| Output Level Logic 0 |  |  |  | 10 | %VDD | Logic 0 | 1 |
| Operation Temperature Range |  | -40 |  | 85 | ℃ |  | 1 |
| Storage Temperature |  | -55 |  | 125 | ℃ |  | 1 |
| Start Time |  |  |  | 2 | mSec |  | 1 |
| Aging |  | -3 |  | 3 | PPM/Year |  | 1 |
| Supply Current |  |  |  | 10 | mA |  | 1 |
| Standby Current |  |  |  | 15 | μA |  | 1 |
| Pulling Range |  | 5 |  |  | PPm | ≥±5.0PPm | 1 |

## CAD (KiCad official)

- Symbol: `HY20MSMD2520-3.3V`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `hy20msmd2520-3-3v-etched.step` / `hy20msmd2520-3-3v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hy20msmd2520-3-3v.step` / `hy20msmd2520-3-3v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Huiyuan crystal datasheet](docs/hy20msmd2520-3-3v-datasheet.pdf) (3 pp, sha256 `97e29f222e8298c7`, retrieved 2026-10-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/hy20msmd2520-3-3v-datasheet.pdf)