# 8132H-25.000MK18DTL

**HCI** · Temperature Compensated Crystal Oscillators (TCXO) · SMD3225-4P

8132H-25.000MK18DTL 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 | E/D or N.C. | input | Enable/disable function pin or no connection, as listed in the pad function table; no logic levels are stated. |
| 2 | GND | power_in | Ground; the metal lid is connected to ground pin 2. |
| 3 | OUTPUT | output | RF output, LVCMOS driving 15pF load with 8ns max rise/fall time and 45~55% duty cycle. |
| 4 | VCC | power_in | Supply voltage Vcc, available as 1.8V, 2.5V or 3.3V versions. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HCI |
| Package | SMD3225-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency range |  | 9.5 |  | 60 | MHz |  | 1 |
| Frequency tolerance (initial, from MPN ±2.0ppm) |  | -2 |  | 2 | ppm | Initial tol. @+25°C | 1 |
| Aging per year |  | -1 |  | 1 | ppm | per year @+25°C | 1 |
| Output voltage level HIGH |  | 90 |  |  | %Vcc |  | 1 |
| Output voltage level LOW |  |  |  | 10 | %Vcc |  | 1 |
| Symmetry (duty cycle) |  | 45 |  | 55 | % | @ 50%VCC | 1 |
| Phase jitter RMS |  |  |  | 1 | ps | 12kHz≤Fj≤20MHz | 1 |
| Nominal frequency (from MPN 25.000) |  |  | 25 |  | MHz |  | 1 |

## CAD (KiCad official)

- Symbol: `8132H-25.000MK18DTL`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `8132h-25-000mk18dtl-etched.step` / `8132h-25-000mk18dtl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `8132h-25-000mk18dtl.step` / `8132h-25-000mk18dtl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HCI datasheet](docs/8132h-25-000mk18dtl-datasheet.pdf) (1 pp, sha256 `0c047c49c5fff4d1`, retrieved 2026-10-29, tier: lcsc)
- **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/8132h-25-000mk18dtl-datasheet.pdf)