DC Power Adapter Module for Breadboard — 5.5×2.1mm Jack to 2.54mm Header
DC Power Adapter Module for Breadboard 5.5×2.1mm Jack to 2.54mm Header
Compatible JST cables for sensors and modules — secure & reliable. Shop now.
Couldn't load pickup availability
DC Power Adapter Module for Breadboard — 5.5×2.1mm Jack to 2.54mm Header
A compact DC power adapter module that converts a standard 5.5×2.1mm barrel jack DC input to 2.54mm breadboard-compatible header pins. Power your breadboard circuits directly from a DC wall adapter without a separate voltage regulator. Ideal for powering Arduino breadboard projects from a bench power supply or DC adapter.
Key Features
- ✅ 5.5×2.1mm barrel jack input — standard DC adapter connector
- ✅ 2.54mm header output — plug directly into breadboard power rails
- ✅ Polarity protection — reverse polarity indicator LED
- ✅ Compact design — minimal footprint on breadboard
- ✅ RoHS compliant
Typical Applications
- Powering breadboard circuits from DC wall adapters
- Arduino breadboard power supply
- Electronics lab bench power distribution
- Sensor and module power supply prototyping

Blog posts
View all-
Best JST Connector Crimping Tools in 2026: Engi...
Choosing the wrong crimping tool ruins JST connectors and wastes wire. This guide compares the top crimping tools for JST SH, GH, PH, XH, and VH series — including Engineer...
Best JST Connector Crimping Tools in 2026: Engi...
Choosing the wrong crimping tool ruins JST connectors and wastes wire. This guide compares the top crimping tools for JST SH, GH, PH, XH, and VH series — including Engineer...
-
Molex KK 254 vs Mini-Fit Jr. vs Micro-Fit 3.0: ...
Choosing between Molex KK 254, Mini-Fit Jr., and Micro-Fit 3.0? This guide compares pitch, current rating, locking mechanism, wire gauge, and typical applications — with decision tables, part number references,...
Molex KK 254 vs Mini-Fit Jr. vs Micro-Fit 3.0: ...
Choosing between Molex KK 254, Mini-Fit Jr., and Micro-Fit 3.0? This guide compares pitch, current rating, locking mechanism, wire gauge, and typical applications — with decision tables, part number references,...
-
DuPont Connector vs JST PH 2.0: Pinout, Specs &...
Not sure whether to use a DuPont 2.54mm or JST PH 2.0mm connector? This guide compares pitch, locking mechanism, current rating, pinout, and best use cases — so you can...
DuPont Connector vs JST PH 2.0: Pinout, Specs &...
Not sure whether to use a DuPont 2.54mm or JST PH 2.0mm connector? This guide compares pitch, locking mechanism, current rating, pinout, and best use cases — so you can...