# 3438T-32768HPTLNL

**HCI** · Crystals · DT-38

3438T-32768HPTLNL from HCI, in a DT-38. 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 | 1 | passive | Terminal 1 of a two-terminal crystal; either orientation. |
| 2 | 2 | passive | Terminal 2 of a two-terminal crystal; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HCI |
| Package | DT-38 |
| Category | Crystals, Oscillators, Resonators |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Equivalent series resistance (ESR) | ESR |  |  | 30 | kΩ | <40kHz | 1 |
| Frequency stability over temperature (parabolic coefficient) |  |  | -0.042 |  | ppm/°C2 | Parabolic coefficient | 1 |
| Aging, first year |  | -5 |  | 5 | ppm | At +25°C | 1 |
| Drive level |  |  | 0.2 | 2 | µW | TYP 0.2µW / MAX 2.0µW | 1 |
| Turnover temperature |  | -5 | 25 | 5 | °C | Printed +25±5°C | 1 |
| Load capacitance | CL | 6 |  | 12.5 | pF | 3438T column value; remarks list 6~32pF or series on request | 1 |
| Motional capacitance |  | 1.5 | 3.2 | 4.5 | fF | Depending on frequency (remarks range 1.5~4.5fF) | 1 |
| Shunt capacitance |  |  | 2 |  | pF | Typical | 1 |
| Nominal frequency |  |  | 32.768 |  | kHz |  | 1 |

## CAD (KiCad official)

- Symbol: `3438T-32768HPTLNL`
- Footprint: `Crystal:Crystal_C38-LF_D3.0mm_L8.0mm_Vertical`
- 3D model: DT-38 (KiCad packages3D, STEP)
- 3D model files: `3438t-32768hptlnl-etched.step` / `3438t-32768hptlnl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3438t-32768hptlnl.step` / `3438t-32768hptlnl.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/8602882574696001536) (1 pp, sha256 ``, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `crystal numbering` (convention), consensus `off` (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/3438t-32768hptlnl-datasheet.pdf)