# XC21M4-52.000-F10NNHPL

**HCI** · Crystals · SMD2016-4P

XC21M4-52.000-F10NNHPL from HCI, in a SMD2016-4P. 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 | CRYSTAL_1 | passive | Crystal terminal 1 of the AT-cut fundamental crystal (20.000 to 60.000MHz). |
| 2 | NC/GND | passive | Not connected or ground; connected to the metal lid, may be left open (floating) or connected to ground. |
| 3 | CRYSTAL_2 | passive | Crystal terminal 2 of the AT-cut fundamental crystal (20.000 to 60.000MHz). |
| 4 | NC/GND | passive | Not connected or ground; connected to the metal lid, may be left open (floating) or connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HCI |
| Package | SMD2016-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `XC21M4-52.000-F10NNHPL`
- Footprint: `Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm`
- 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files: `xc21m4-52-000-f10nnhpl-etched.step` / `xc21m4-52-000-f10nnhpl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc21m4-52-000-f10nnhpl.step` / `xc21m4-52-000-f10nnhpl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HCI datasheet](docs/xc21m4-52-000-f10nnhpl-datasheet.pdf) (1 pp, sha256 `e89f0768f67c7eed`, retrieved 2026-10-22, 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/xc21m4-52-000-f10nnhpl-datasheet.pdf)