The 650nm Mini Laser Dot Diode Module is a compact 6mm diameter red laser emitting a focused 650nm dot beam at 5mW output power, operating at 5V DC with 40mA current draw and a 120mm power lead for flexible mounting in small enclosures and project boxes. The mini laser dot module projects a single focused point rather than a line, making it the basic dot-beam counterpart to cylindrical-lens line laser modules used for pointing, targeting, and alignment reference applications.
The laser dot module connects with just two wires from the 120mm lead — positive and negative — and at 5V DC with 40mA draw, most Arduino digital pins can switch this module on and off directly through a small NPN transistor for reliable switching, since the current exceeds typical safe direct GPIO sourcing limits. The dot laser 5mW output places it in Class IIIa — visible and bright but requiring caution around direct eye exposure. This 6mm dot laser light form factor is among the smallest laser diode modules available, fitting into compact handheld pointer builds and small robot chassis mounting points.
the 650 nm 5mw mini laser dot diode module’s compact 6mm size means heat dissipation is limited compared to larger laser modules — continuous operation for extended periods may cause the diode to warm noticeably, and intermittent or PWM-based operation is gentler on the diode’s long-term lifespan. Available at StemVolt, This module is well-suited for engineers building laser pointer alignment tools and practical compact targeting electronics projects.
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Features:
- 650nm red dot beam at 5mW Class IIIa output power
- Compact 6mm diameter fits small enclosures and handheld pointer builds
- 5V DC at 40mA — use transistor for Arduino digital switching
- 120mm power lead for flexible mounting away from driver circuit
- Simple two-wire connection for beginner laser pointer projects
Technical Specifications:
 Applications:
- 650nm Mini Laser Dot Diode Module used for Arduino projects
- College project uses mini laser dot module for targeting demo circuit
- Robot uses laser dot module for distance pointing indicator build
- Security build uses dot laser for India tripwire entry detection
- STEM kit uses dot laser light for basic laser pointer demo
Package Includes:
- 1 x 650nm Mini Laser Dot Diode Module
Rajat Panchal –
This module produces a clear and stable red laser dot, making it ideal for STEM projects, alignment tasks, and educational experiments
Abhishek Shringi –
Impressed with quality
Garvit Gochar –
Received this mini laser dot module in excellent condition, beam quality was consistent and it worked perfectly for my STEM project application.
Tanjil Qureshi –
Delivered in 3 days with careful packaging, and helpful staff assisted with product selection and project-related queries
Divya Patodi –
Original product received