# Adafruit VL53L0X ToF distance sensor (#3317, STEMMA QT): 25.4 × 17.78 mm board, 4 mounting holes and sensor window

> What are the Adafruit VL53L0X (product 3317) breakout dimensions and mounting-hole positions?

- Category: Electronic components › Modules, sensors & displays
- Kind: Modern device
- Basis: Adafruit's EagleCAD board file for the VL53L0X STEMMA QT breakout, with connector height from the JST SH datasheet.
- Page: https://xemstudio.com/objects/adafruit-vl53l0x-3317/ · JSON: https://xemstudio.com/api/geometry?object=adafruit-vl53l0x-3317 · Plain text: https://xemstudio.com/objects/adafruit-vl53l0x-3317/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 25.4 | 17.78 | 4.55 |

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Board 25.40 × 17.78, 1.6 thick, R2.54 corners, centred, board bottom at 0; 6-pin 0.1 in header row along one long edge.
- Four Ø2.5 mounting holes at (±10.16, ±6.35) from the board centre: a 20.32 × 12.70 rectangle.
- STEMMA QT (JST SH 4-pin) connectors on both short edges, openings facing outward, 4.55 overall height.
- VL53L0X sensor (2.40 × 4.40 × 1.0) at the board centre; its top is the optical window, keep it clear.
- Not modelled: loose header and small parts. The older non-STEMMA version is 20.32 × 17.78 with two holes and differs.
- All dimensions are exact nominal millimetres, true size, with no tolerance added.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| Mounting holes | 4 × Ø2.5 on 20.32 × 12.70 | M2.5 or #2-56 screws and standoffs | designed | all |
| Sensor window | 2.40 × 4.40 package at board centre | clear opening in a cover or sensor ring | designed | all |

## Sizes

| hole | x (mm) | y (mm) | diameter (mm) |
|---|---|---|---|
| 1 | -10.16 | -6.35 | 2.5 |
| 2 | +10.16 | -6.35 | 2.5 |
| 3 | -10.16 | +6.35 | 2.5 |
| 4 | +10.16 | +6.35 | 2.5 |

## Where the files are

- Adafruit: [Adafruit VL53L0X Time of Flight Distance Sensor (#3317)](https://www.adafruit.com/product/3317) — web — Publisher's page; dimensions are facts
- Adafruit: [Adafruit-VL53L0X-ToF-Distance-Sensor-PCB repository](https://github.com/adafruit/Adafruit-VL53L0X-ToF-Distance-Sensor-PCB) — web — Publisher's page; dimensions are facts
- Adafruit Learning System: [Adafruit VL53L0X Micro-LIDAR Distance Sensor Breakout guide](https://learn.adafruit.com/adafruit-vl53l0x-micro-lidar-distance-sensor-breakout) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/adafruit-vl53l0x-3317/index.json

- adafruit-vl53l0x-3317: [STEP](https://xemstudio.com/files/hardware/adafruit-vl53l0x-3317/adafruit-vl53l0x-3317.step) · [STL](https://xemstudio.com/files/hardware/adafruit-vl53l0x-3317/adafruit-vl53l0x-3317.stl) — Adafruit VL53L0X ToF distance sensor (#3317, STEMMA QT): 25.4 × 17.78 mm board, 4 mounting holes and sensor window

## Questions

**How big is the Adafruit VL53L0X breakout?**

The STEMMA QT version is 25.40 × 17.78 mm, 1.6 mm board, 4.55 mm tall over the connectors.

**What are the VL53L0X breakout mounting holes?**

Four Ø2.5 holes on a 20.32 × 12.70 mm rectangle centred on the board.

## Fits with

- [Adafruit STEMMA QT sensor breakouts (BME280, BNO055/085, VL53, SCD-40, AHT20, SHT40, IMUs, light, magnet, RTC…)](https://xemstudio.com/objects/adafruit-stemma-qt-breakouts/)
- [JST SH connector (1.0 mm pitch): wire, ratings, circuits](https://xemstudio.com/objects/jst-sh-connector/)
- [Threaded standoffs, M2.5 and M3 (hex and round)](https://xemstudio.com/objects/threaded-standoffs-metric/)
- [2.54 mm pin headers, 1×2 to 2×20, vertical and right-angle](https://xemstudio.com/objects/pin-headers-2.54mm/)
- [Adafruit BME280 breakout (original)](https://xemstudio.com/objects/adafruit-bme280-breakout-original/)