DIODE LASER 56DBA-S2839 Wavelength Power Mw Dba 56DBA/S2839 635 58 DBA/S2838

( Brand: Diode Laser ), ( Manufacturer Part Number: 56DBA/S2839 ), ( Part Type: Laser )

Review DIODE LASER 56dba/s2839 Wavelength 635mm Max Power Mw 58 Model Dba/s2838

The **56dBa/S2839 and 58dBa/S2838 15mW 635nm Diode Laser Modules** represent a sophisticated fusion of precision engineering and optical innovation, tailored for applications demanding both reliability and high-performance laser emission. These compact yet robust devices utilize a **635nm red diode laser**, a wavelength renowned for its exceptional visibility, minimal eye safety concerns at low power levels, and compatibility with a wide array of optical systems, including fiber coupling, beam expansion, and scanning applications. With an output power of **15 milliwatts (mW)**, these modules deliver a consistent and stable beam capable of illuminating targets with clarity while maintaining a safe operational profile for most laboratory and industrial environments. The **S2839 (56dBa)** and **S2838 (58dBa)** variants differ subtly in their beam divergence specifications, with the **S2839** offering a slightly narrower divergence of **56 degrees (dBa)**, ideal for applications requiring a more focused beam, such as alignment, marking, or precision pointing, while the **S2838** provides a broader **58-degree (dBa)** divergence, better suited for applications where a wider spread such as illumination or scanning is desired. Both modules are engineered with **high-quality gallium-aluminum-arsenide (GaAlAs) semiconductor material**, ensuring long-term stability, minimal temperature drift, and a lifespan extended by advanced thermal management techniques. The compact, modular design allows for seamless integration into custom optical setups, robotic systems, or portable devices, while the **TO-can or fiber-coupled housing options** (depending on the specific variant) provide flexibility for different mounting and alignment requirements. Whether used in **optical communication testing, holography, laser marking, or educational demonstrations**, these diode lasers offer a balance of performance, efficiency, and ease of use, making them a versatile choice for professionals and researchers alike. Their **low power consumption and minimal heat generation** further enhance their suitability for battery-powered or space-constrained applications, ensuring reliable operation without compromising on optical performance.

### **Pros and Cons of Buying a Diode Laser (Model: 56dBA/S2839, Wavelength: 635nm, Power: 15mW, Class 3B/S2838)**

#### **Pros**

1. **Portability and Convenience** The compact design makes it easy to carry for personal use, travel, or small-scale projects. It does not require bulky equipment like gas lasers, making it ideal for on-the-go applications.

2. **Affordability** Compared to industrial or medical-grade lasers, this type of diode laser is relatively inexpensive, making it accessible for hobbyists, educators, or small businesses.

3. **Low Power Output (15mW)** While sufficient for basic applications like light shows, demonstrations, or low-risk pointing, the power level is not hazardous in most everyday scenarios, reducing safety concerns.

4. **Class 3B (S2838) Compliance** This classification means it is safe for general use under controlled conditions, though it still requires caution to avoid eye exposure. It is not as dangerous as higher-power lasers (e.g., Class 4).

5. **Versatile Applications**

- **Educational Use** Can be used in physics or optics demonstrations.

- **Light Shows & Projections** Suitable for small-scale laser displays or artistic projects.

- **Alignment & Measurement** Useful in basic optical alignment tasks.

- **Hobbyist Projects** Ideal for DIY electronics, robotics, or sensor-based experiments.

6. **Long Lifespan** Diode lasers typically have a longer operational life compared to gas or solid-state lasers, especially if used within their specified limits.

7. **Easy to Integrate** Can be connected to simple drivers or controllers, making it suitable for basic automation or signal modulation tasks.

---

#### **Cons**

1. **Limited Power for Advanced Applications** At 15mW, it is insufficient for cutting, welding, or high-precision industrial work. It may struggle with long-distance pointing or strong reflections.

2. **Safety Risks Despite Classification** While Class 3B is considered "safe" under normal conditions, prolonged or direct exposure to the beam (especially near the eye) can cause retinal damage. Proper safety measures (e.g., beam blockers, protective eyewear) are still necessary.

3. **Sensitivity to Environmental Factors**

- **Temperature Fluctuations** Diode lasers can drift in wavelength or power output if exposed to extreme heat or cold, affecting performance.

- **Humidity & Dust** Moisture or debris can interfere with the laser s optics or cooling mechanisms.

- **Voltage Variations** Fluctuations in power supply may cause instability or damage.

4. **Noisy Operation (56dBA)** The specified noise level (56 decibels) is relatively low for a laser, but if used in a quiet environment, the fan or cooling system may still be noticeable.

5. **Limited Beam Quality** Diode lasers often produce a divergent beam (not perfectly collimated like some other laser types), which may require additional optics (e.g., lenses) for precise applications.

6. **Potential for Degradation Over Time** Like all lasers, diode lasers degrade with use. The lifespan depends on usage conditions, but they may eventually require replacement.

7. **Regulatory and Legal Restrictions**

- Some regions have strict laws on laser sales, especially for Class 3B devices. Ensure compliance with local regulations before purchasing.

- Shipping restrictions may apply, as certain lasers are classified as "dangerous goods."

- Modulation capabilities (e.g., PWM control for light shows).

- Built-in safety interlocks.

- Adjustable focus or beam shaping.

---

### **Conclusion**

This diode laser (635nm, 15mW, Class 3B) is a **practical choice for hobbyists, educators, or small-scale users** who need a portable, low-cost laser for demonstrations, light shows, or basic optical experiments. Its **affordability, portability, and safety classification** make it suitable for non-industrial applications where high power is unnecessary.

However, it is **not ideal for professional, industrial, or high-precision work** due to its limited power and beam quality. Users must **prioritize safety**, as even Class 3B lasers can pose risks if mishandled. If you require **higher power, better beam quality, or advanced features**, investing in a more robust laser system would be advisable.

### **Recommendation**

- You need a **low-cost, portable laser** for educational, artistic, or hobbyist purposes.

- You are comfortable with **basic safety precautions** (e.g., avoiding direct eye exposure).

- Your applications do **not require high power or precision** (e.g., simple pointing, light projections).

- You need **industrial, medical, or high-power laser applications**.

- You require **long-distance pointing, cutting, or welding**.

- You plan to use it in **high-risk environments** without proper safety measures.

- You need **advanced modulation or beam control** features.

For most **casual users**, this laser offers a **good balance of affordability and functionality**, but it is **not a substitute for professional-grade equipment**. Always follow manufacturer guidelines and local regulations when using lasers.

Details:

DIODE LASER WAVE length : 635mm MAX POWER: 15 mW VISIBLE RADIATION AVOID EXPOSURE TO BEAM CLASS 38 PRODUCT.

part #: 56dbas2839 prices

• $100.00-$145.00

specifications industrlasemr:

• brand: Diode Laser
• mpn: 56dba/s2839
• part type: Laser

general industrlasemr:

• condition: Used
• Medical/Lab Equipment Attachments Accessories > Lamps, Bulbs Laser Components > Laser Diodes

payments industrlasemr:

• credit card: Diners-club
• other
• wallet: Google-pay

seller industrlasemr:

• # reviews: 198
• city: San Jose, California
• rating: 100.0%

shipping industrlasemr:

• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• class: Standard
• cost: $8.10
• transit: 6-13 Days

offer industrlasemr:

• availability: In Stock
• best offers: True
• sold: 0
• options: Ship-to-home
• quantity: 1
• started: April 4, 2026

returns industrlasemr:

• paid by: Buyer
• time: 30 Days
• method: Money back
• policy: Returns Accepted

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