Robot wiring and sensor chains
4-wire 50 mm jumper (STEMMA QT / Qwiic) — plugs I2C sensors and boards together without soldering.
Engineering inference
Adafruit Industries
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.
4399Development boardPrice$0.95www.adafruit.com · in stock
Buy at www.adafruit.com Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
No-load speed, rated performance and stall limits describe different operating points. A stall specification is not a continuous operating rating.
3D model & CAD
3D model & CAD files
Downloadable geometry for mechanical fit checks.
No CAD file is stored for this product yet.
Connectors & wiring
Connectors and wiring
What each end plugs into and what each wire carries.
- 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
| Pin / wire | Position | Role | Notes |
|---|---|---|---|
| GND | SH-1 | ground | black wire, JST SH pin 1 |
| V+ | SH-2 | power | red wire, JST SH pin 2 |
| SDA | SH-3 | i2c sda | blue wire, JST SH pin 3 |
| SCL | SH-4 | i2c scl | yellow wire, JST SH pin 4 |
| Connector | Type |
|---|---|
| end_a | JST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) |
| end_b | JST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) |
Specifications
Motor performance
No-load, rated-load and stall figures retain their separate test conditions.
Stall torque and current are not continuous ratings. Check the duty cycle and starting load when choosing the driver and power supply.
Thermal limits by level
Product operating conditions, chip ambient ratings, package case limits and junction maxima remain separate.
Motor body
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
Board connectors
| ID / type | Pins | Pitch | Notes |
|---|---|---|---|
| end_aJST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) | 4 | 1 mm | — |
| end_bJST SH 4-pin female, 1 mm pitch (STEMMA QT / Qwiic) | 4 | Unknown | — |
Complete structured record
Every available field, including details beyond the summaries. Null means the value has not been established.
Sourcing & files
Supplier offers
US / USD is the target market. Observed price and stock are separate from a delivery quote.
www.adafruit.com
US · USD
$0.95Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 06:00 PM UTC
- Delivery estimate
- Not quoted
Observed within the last 24 hours. Confirm the current supplier quote.
Visit supplier (opens in a new tab)Delivery depends on quantity, postal code and shipping method. A dispatch statement such as “ship today” is not an arrival estimate.
Design files and references
Each source keeps its own verification status. Confirm the part revision and file contents before using it in a design.
Datasheet (opens in a new tab)
Manufacturer reference
Adafruit STEMMA QT Cable 50 mm (JST SH 4-pin) (Adafruit 4399) — store photo (opens in a new tab)
Manufacturer reference
inspected: store photo of the cable and both connectors
Source evidence
Document provenance, retrieval dates and the field groups supported by each source.
Supports: spec.provides.cable_type, spec.provides.conductors, spec.provides.connector_a, spec.provides.connector_b, spec.provides.ecosystem, spec.provides.features, spec.provides.length_mm, spec.provides.pitch_mm, spec.usage.connectors, spec.usage.pinout, spec.usage.pinout_complete
sha256 927c4e7e923ff6a18f0adbf5c8c33500bb35b0480ed7be2818cc8fd961fcc13d
Supports: offers
FAQ
Adafruit STEMMA QT Cable 50 mm questions
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 — Adafruit Industries
- www.adafruit.com listing