# Adafruit STEMMA QT Cable 50 mm (JST SH 4-pin)

> Adafruit 4399 STEMMA QT Cable 50 mm: 4-wire cable 50 mm long, JST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) on both ends; wires black GND, red V+, blue SDA, yellow SCL (Qwiic order). Plugs I2C sensors, IMUs and touch boards together without soldering.

- Manufacturer: Adafruit Industries
- Part number: 4399
- Category: Cables & harnesses
- Canonical page: https://www.xirkit.io/products/adafruit-stemma-qt-cable-50-mm-jst-sh-4-pin-6d1b
- Pinout: https://www.xirkit.io/products/adafruit-stemma-qt-cable-50-mm-jst-sh-4-pin-6d1b/pinout
- Structured JSON: https://www.xirkit.io/products/adafruit-stemma-qt-cable-50-mm-jst-sh-4-pin-6d1b/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Cable type | jumper |
| Ecosystem | STEMMA QT / Qwiic |
| Connector A | JST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) |
| Connector B | JST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) |
| Conductors | 4 |
| Connector pitch | 1 mm |
| Length | 50 mm |

## Pinout (4 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| GND | SH-1 | ground | — | ground | — | — | — | — | — | — | — |
| V+ | SH-2 | power | — | v+ | — | — | — | — | — | — | — |
| SDA | SH-3 | i2c sda | — | sda | — | — | — | — | — | — | — |
| SCL | SH-4 | i2c scl | — | scl | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.adafruit.com | 0.95 USD | in_stock | 2026-10-01 | https://www.adafruit.com/product/4399 |

## FAQ

**How much does the Adafruit STEMMA QT Cable 50 mm cost?**

From $0.95 at www.adafruit.com. Prices are observed unit prices before tax and shipping.

**Where does this Adafruit STEMMA QT Cable 50 mm data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Adafruit STEMMA QT Cable 50 mm (JST SH 4-pin) datasheet](https://www.adafruit.com/product/4399)
- [www.adafruit.com listing](https://www.adafruit.com/product/4399)

## Part graph

### Alternatives (by use case)

- [Adafruit JST PH to JST SH Cable 200 mm (STEMMA to QT)](https://www.xirkit.io/products/adafruit-jst-ph-to-jst-sh-cable-200-mm-stemma-to-qt-108e) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $0.95
- [Adafruit STEMMA QT Cable 300 mm (JST SH 4-pin)](https://www.xirkit.io/products/adafruit-stemma-qt-cable-300-mm-jst-sh-4-pin-552f) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $1.25
- [Adafruit QT to Female Sockets 150 mm (STEMMA QT)](https://www.xirkit.io/products/adafruit-qt-to-female-sockets-150-mm-stemma-qt-5bb4) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $0.95
- [Adafruit QT to Male Headers 150 mm (STEMMA QT)](https://www.xirkit.io/products/adafruit-qt-to-male-headers-150-mm-stemma-qt-73fa) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $0.95
- [Adafruit STEMMA QT Cable 400 mm (JST SH 4-pin)](https://www.xirkit.io/products/adafruit-stemma-qt-cable-400-mm-jst-sh-4-pin-8edd) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $1.5
- [Adafruit STEMMA QT Cable 100 mm (JST SH 4-pin)](https://www.xirkit.io/products/adafruit-stemma-qt-cable-100-mm-jst-sh-4-pin-c913) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $0.95
- [Adafruit STEMMA QT Cable 200 mm (JST SH 4-pin)](https://www.xirkit.io/products/adafruit-stemma-qt-cable-200-mm-jst-sh-4-pin-f7bb) — Both serve robot wiring and sensor chains — check the trade-offs; $0.95 vs $1.25
- [SparkFun Qwiic Cable 100 mm](https://www.xirkit.io/products/sparkfun-qwiic-cable-100-mm-f5c2) — Both serve robot wiring and sensor chains — check the trade-offs; $1.5 vs $0.95
- [Adafruit STEMMA to Male Headers 200 mm](https://www.xirkit.io/products/adafruit-stemma-to-male-headers-200-mm-3ec9) — Both serve robot wiring and sensor chains — check the trade-offs; $1.5 vs $0.95
- [SparkFun Qwiic Cable Breadboard Jumper](https://www.xirkit.io/products/sparkfun-qwiic-cable-breadboard-jumper-e9ab) — Both serve robot wiring and sensor chains — check the trade-offs; $1.5 vs $0.95
- [Adafruit STEMMA to Female Sockets 200 mm](https://www.xirkit.io/products/adafruit-stemma-to-female-sockets-200-mm-f0d7) — Both serve robot wiring and sensor chains — check the trade-offs; $1.5 vs $0.95
- [SparkFun Flexible Qwiic Cable 50 mm](https://www.xirkit.io/products/sparkfun-flexible-qwiic-cable-50-mm-fb74) — Both serve robot wiring and sensor chains — a direct substitute; $1.5 vs $0.95
- [SparkFun Qwiic Cable 50 mm](https://www.xirkit.io/products/sparkfun-qwiic-cable-50-mm-87af) — Both serve robot wiring and sensor chains — a direct substitute; $0.95 vs $0.95
- [Adafruit STEMMA JST PH 4-pin Cable 150mm](https://www.xirkit.io/products/adafruit-stemma-jst-ph-4-pin-cable-150mm-0a43) — Both serve robot wiring and sensor chains — check the trade-offs; $0.75 vs $0.95