# SparkFun 9DoF IMU Breakout ICM-20948 Qwiic (SEN-15335): 1 in board, holes and Qwiic connectors

> What are the SparkFun ICM-20948 Qwiic breakout (SEN-15335) dimensions and mounting-hole positions?

- Category: Electronic components › Modules, sensors & displays
- Kind: Modern device
- Basis: SparkFun Eagle board file SparkFun_IMU_Breakout_ICM-20948.brd (SparkFun_Qwiic_9DoF_IMU_Breakout repository) and the JST SH connector datasheet.
- Page: https://xemstudio.com/objects/sparkfun-icm-20948-qwiic-sen-15335/ · JSON: https://xemstudio.com/api/geometry?object=sparkfun-icm-20948-qwiic-sen-15335 · Plain text: https://xemstudio.com/objects/sparkfun-icm-20948-qwiic-sen-15335/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 | 25.4 | 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

- Datum: board centre, board bottom at 0, components on top. PCB 25.40 × 25.40 (1.0 × 1.0 in), square corners, 1.6 thick (standard; not stated in the board file).
- Four Ø3.30 holes for M3 or #4-40 at (±10.16, ±10.16): a 20.32 square, 2.54 from each edge.
- Two Qwiic (JST SH 4-pin side-entry) connectors, each 4.25 × 6.00 × 2.95, centred at x ±10.10 on the centre line, openings facing the ±x edges; top at 4.55 above the board bottom.
- Not modelled: the two 1 × 6 0.1 in header rows along the ±y edges (plated holes, no headers fitted) and the 3 × 3 × 1 ICM-20948 at the board centre.
- Dimensions are exact nominal (true size), 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 × Ø3.30 on 20.32 × 20.32 | M3 or #4-40 screws and standoffs | designed | all |
| Qwiic connectors | JST SH 4-pin, 1.0 pitch | Qwiic / STEMMA QT cables | socket | all |

## Sizes

| hole | x (mm) | y (mm) | Ø (mm) |
|---|---|---|---|
| 1 | −10.16 | −10.16 | 3.30 |
| 2 | +10.16 | −10.16 | 3.30 |
| 3 | −10.16 | +10.16 | 3.30 |
| 4 | +10.16 | +10.16 | 3.30 |

## Where the files are

- SparkFun: [SparkFun 9DoF IMU Breakout - ICM-20948 (Qwiic), SEN-15335](https://www.sparkfun.com/products/15335) — web — Publisher's page; dimensions are facts
- SparkFun (GitHub): [SparkFun_Qwiic_9DoF_IMU_Breakout hardware files](https://github.com/sparkfun/SparkFun_Qwiic_9DoF_IMU_Breakout) — web — Publisher's page; dimensions are facts
- JST: [SH connector datasheet](https://www.jst-mfg.com/product/pdf/eng/eSH.pdf) — web — Publisher's page; dimensions are facts

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

Index: https://xemstudio.com/files/hardware/sparkfun-icm-20948-qwiic-sen-15335/index.json

- sparkfun-icm-20948-qwiic-sen-15335: [STEP](https://xemstudio.com/files/hardware/sparkfun-icm-20948-qwiic-sen-15335/sparkfun-icm-20948-qwiic-sen-15335.step) · [STL](https://xemstudio.com/files/hardware/sparkfun-icm-20948-qwiic-sen-15335/sparkfun-icm-20948-qwiic-sen-15335.stl) — SparkFun 9DoF IMU Breakout ICM-20948 Qwiic (SEN-15335): 1 in board, holes and Qwiic connectors

## Questions

**How big is the SparkFun ICM-20948 breakout?**

25.4 × 25.4 mm (1 × 1 in), 4.55 mm tall at the Qwiic connectors.

**Where are the mounting holes?**

Four Ø3.30 mm holes on a 20.32 mm square, 2.54 mm in from each edge, for M3 or #4-40.

## Fits with

- [JST SH connector (1.0 mm pitch): wire, ratings, circuits](https://xemstudio.com/objects/jst-sh-connector/)
- [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/)
- [Threaded standoffs, M2.5 and M3 (hex and round)](https://xemstudio.com/objects/threaded-standoffs-metric/)
- [Imperial machine screws: #4-40, #6-32, #8-32, 1/4-20](https://xemstudio.com/objects/imperial-machine-screws/)
- [Socket head cap screws, M2–M8 (ISO 4762 / DIN 912)](https://xemstudio.com/objects/socket-head-cap-screws-metric/)