# SR32M4-433.920-F75IL25AL

**HCI** · SAW Resonators · SMD3225-4P

SR32M4-433.920-F75IL25AL from HCI, 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 | I/O | passive | Input/Output terminal of the SAW resonator, interchangeable with pin 3. |
| 2 | GND | power_in | Ground terminal; DC insulation resistance between any two pins is 1.0 MΩ minimum. |
| 3 | I/O | passive | Output/Input terminal of the SAW resonator, interchangeable with pin 1. |
| 4 | GND | power_in | Ground terminal; DC insulation resistance between any two pins is 1.0 MΩ minimum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HCI |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `SR32M4-433.920-F75IL25AL`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `sr32m4-433-920-f75il25al-etched.step` / `sr32m4-433-920-f75il25al-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sr32m4-433-920-f75il25al.step` / `sr32m4-433-920-f75il25al.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HCI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603071278228664320) (1 pp, sha256 `d68f2f59bb3e92ec`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sr32m4-433-920-f75il25al-datasheet.pdf)