B03B Dedicated DC Power Supplies for Laser Applications

CORE TECHNOLOGY

Stable DC Power Conversion Technology

Precision-regulated power supplies delivering consistent voltage and current for reliable laser diode operation.

Certified Safety Design

TÜV and CE certified with reinforced insulation, meeting international safety standards for laser equipment power supplies.

Stable Output Regulation

Precisely regulated DC 3V / 30mA output maintains constant voltage and current for consistent laser line brightness and diode longevity.

Dual Voltage Versions

50Hz / 230–240V versions for European and Asian markets, 60Hz / 120V versions for North American applications.

Built-in Protection

Integrated short-circuit, overload and over-temperature protection safeguards both the power supply and connected laser module.

SPECIFICATIONS

B03B Specifications

PARAMETER	B03B
Certification Standard
Input Voltage	AC 120 V, 60 Hz
Output Voltage	DC 3±0.3 V
Output Current	50 mA

PRODUCT VIEW

B03B at a Glance

SERIES

Laser Power Supply — part of Dongke Electric's professional-grade product range.

CERTIFICATION

TUV, UL, TÜV/CE certified — compliant with international safety standards.

APPLICATION

Laser line markers, Electric tool integration, Workshop equipment and more.

TECHNICAL DRAWING

Dimensions & Electrical Circuit Diagram

Engineering drawings available upon request. Contact us for detailed CAD files and 3D models for your design team.

APPLICATIONS

Laser System Power Applications

Power supplies designed specifically for driving laser line markers and alignment lasers.

01

Construction Lasers

Reliable power for rotary lasers, line lasers and combination laser levels used in building construction.

02

Industrial Alignment

Stable power supply for fixed-mount laser alignment systems in manufacturing and quality inspection.

03

Woodworking Machines

Integrated laser power for saw blade guides, router templates and CNC positioning systems.

04

DIY Laser Tools

Compact power adapters for hobbyist laser levels, workshop alignment tools and craft project guides.

05

OEM Integration

Board-level and enclosed power supplies for embedding laser marking into equipment and fixtures.

06

Replacement Units

Direct replacement power supplies for worn or damaged laser tool power adapters across brands.

Quality & Certifications

Built for Global OEM Standards

Dongke Electric products are manufactured in our ISO 9001:2015 facility with UL- and TUV-certified in-house laboratories. Every unit passes four quality gates before it ships.

TUVULCEISO 9001:2015

Four Quality Gates, One Reliable Product

Each stage is backed by documented procedures, trained personnel and calibrated instruments.

Stage 1

IQC

Raw materials and components are inspected on arrival. We verify material certifications, dimensional accuracy and electrical properties against our specifications.

Stage 2

IPQC

Automated assembly lines are checked at every station. Regular line inspections, first-article checks and SPC monitoring detect and correct deviations in real time.

Stage 3

FQC

Every unit is tested before shipment. Key parameters including contact resistance, insulation resistance and switching operation are verified on 100% of products.

Stage 4

OQC

Packed batches are re-checked before dispatch. Our team performs sampling inspections based on AQL standards, verifying packaging integrity and labeling accuracy.

Quality You Can Trust

Dongke Electric operates a dual-accredited testing laboratory (UL + TUV) — a distinction shared by only a handful of manufacturers in our industry.

Trusted by Customers in 30+ Countries

Get in Touch

Looking for Reliable Laser Power Supplies?

Request a quote, samples, or technical datasheets. Our team responds within 24 hours.

Contact US →

Frequently Asked Questions

What is the B03B?

B03B dedicated AC/DC power supply module for laser applications. Supports AC230V-240V and AC120V input with stable DC3V output and 50mA maximum current for laser modules and measurement equipment.

What are the key specifications of the B03B?

Input voltage: AC 120 V, 60 Hz; Output voltage: DC 3±0.3 V; Output current: 50 mA.

What should be checked before using the B03B as a replacement?

Before using this product as a replacement, verify that rated voltage (AC 120 V, 60 Hz), rated current (50 mA) match your target part. Also check the mounting and terminal layout. Contact DKLD with the ratings of the part you are replacing and we will confirm suitability.

Can this product range be customized for OEM projects?

Yes. Electrical parameters, connectors and packaging can be customized for OEM/ODM projects.

How can I verify DKLD certifications?

UL certification and TÜV certification are verifiable in the official databases.

Where are DKLD products manufactured?

All products are manufactured at our Yueqing facility with in-house quality control.