# 7B012288R01

**HD** · Crystals · SMD3225-4P

7B012288R01 from HD, 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 | CRYSTAL | passive | Crystal terminal connected to one side of the 12.288MHz quartz resonator (load capacitance 20pF, drive level 100μW Max). |
| 2 | GND | power_in | Ground pad, connected to GND per the pin table and internal view connection. |
| 3 | CRYSTAL | passive | Crystal terminal connected to the other side of the 12.288MHz quartz resonator (load capacitance 20pF, drive level 100μW Max). |
| 4 | GND | power_in | Ground pad, connected to GND per the pin table and internal view connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HD |
| 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 Tolerance | Δf/f | -10 |  | 10 | ppm | Printed as ±10ppm; test temperature not stated | 1 |
| Frequency Temperature Stability |  | -20 |  | 20 | ppm | Printed as ±20ppm; conditions not stated | 1 |
| Resonance Resistance |  |  |  | 70 | ohm | Fundamental mode; Max | 1 |
| Shunt Capacitance | C0 |  |  | 2 | pF | Max | 1 |
| Drive Level | DL |  |  | 100 | μW | Max | 1 |
| Operating Temperature Range | TOPR | -20 |  | 70 | °C | As printed | 1 |
| Storage Temperature Range | TSTG | -55 |  | 125 | °C | As printed | 1 |
| Insulation Resistance | IR | 500 |  |  | M ohms | Printed as >500M ohms; test conditions not stated | 1 |
| Aging | Δf_A | -3 |  | 3 | ppm/Year | Printed as ±3ppm/Year Max | 1 |
| Reliability frequency change |  | -5 |  | 5 | ppm | Frequency change after drop, mechanical shock, shake, humidity, low/high temperature, temperature cycling and reflow tests | 2 |
| Nominal Frequency | f |  | 12.288 |  | MHz | Fundamental mode | 1 |
| Load Capacitance | CL |  | 20 |  | pF | As printed | 1 |

## CAD (KiCad official)

- Symbol: `7B012288R01`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `7b012288r01-etched.step` / `7b012288r01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `7b012288r01.step` / `7b012288r01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HD datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588931825863835648) (4 pp, sha256 `7fddfc2998413f62`, retrieved 2026-10-13, 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/7b012288r01-datasheet.pdf)