100-Pack 650nm 5mW Red Laser Diode 5.6mm TO-18 Industrial Grade
100-Pack 650nm 5mW Red Laser Diode 5.6mm TO-18 Industrial Grade
100-Pack 5.6mm Red Laser Diode 650nm 5mW TO-18 Industrial Grade with PD
Get consistent, reliable performance with this bulk pack of 100 industrial-grade red laser diodes. Operating at 650nm wavelength and 5mW output power, these 5.6mm LD laser diodes feature built-in photodiodes (PD) for superior brightness uniformity — making them an excellent choice for engineers, hobbyists, educators, and manufacturers who demand precision and consistency across every unit.
Housed in the industry-standard TO-18 metal can package, these diodes offer excellent heat dissipation and mechanical durability. The 3-pin configuration provides easy integration into your existing laser driver circuits, modules, or custom PCB designs.
Key Features
- Quantity: 100 pieces per pack — ideal for bulk projects, R&D, and production runs
- Wavelength: 650nm (visible red)
- Output Power: 5mW
- Forward Voltage: 2.2V (typical); Max 5V
- Max. Forward Current: 0.5A
- Max. Reverse Current: 0.5A
- Max. Reverse Voltage: 5V
- Package Type: TO-18 (5.6mm diameter metal can)
- Built-in Photodiode (PD): Enables automatic power control (APC) for consistent brightness
- Pins: 3-pin configuration
- Grade: Industrial
- Condition: Brand new
- High-Concern Chemicals: None
Common Applications
- Laser pointers and presentation tools
- Optical sensing and detection systems
- Laser rangefinders and distance measurement
- Barcode scanners and alignment systems
- Scientific instruments and laboratory setups
- DIY electronics and maker projects
- Industrial automation and positioning equipment
Technical Specifications
| Parameter | Value |
|---|---|
| Wavelength | 650nm (Red) |
| Output Power | 5mW |
| Typical Forward Voltage | 2.2V |
| Max Forward Voltage | 5V |
| Max Forward Current | 0.5A |
| Max Reverse Voltage | 5V |
| Max Reverse Current | 0.5A |
| Package | TO-18 (5.6mm) |
| Pins | 3-pin |
| Photodiode (PD) | Yes (built-in) |
| Quantity | 100 pcs |
Made in Mainland China.
For general laser safety guidelines and classifications, refer to the U.S. Consumer Product Safety Commission (CPSC) Laser Safety Resource.
Frequently Asked Questions
Q: Do these 650nm red laser diodes include a built-in photodiode (PD)?
A: Yes. Each of the 100 diodes in this pack includes a built-in photodiode (PD), which allows automatic power control (APC) circuitry to maintain consistent brightness output across all units — ideal for precision applications.
Q: What driver circuit do I need for these TO-18 5.6mm laser diodes?
A: These 3-pin TO-18 laser diodes work with standard laser diode driver circuits that support automatic power control (APC) mode. The typical forward voltage is 2.2V with a maximum of 5V, so ensure your driver is rated appropriately. Always use a current-limiting driver — never drive a laser diode directly from a voltage source without current control.
Q: Are these laser diodes suitable for industrial or high-volume production use?
A: Absolutely. These are rated as industrial-grade components, and the bulk pack of 100 units makes them well-suited for production runs, prototyping, R&D labs, and any application requiring consistent performance at scale.
Q: What is the beam color and visibility of a 650nm laser diode?
A: At 650nm, the output is a bright, visible red beam. This wavelength falls within the human eye's high-sensitivity range for red light, making it clearly visible in typical indoor and low-light environments — commonly used in pointers, alignment tools, and sensing systems.