A busbar is essentially a metallic conductor used to collect, distribute, or transfer electrical power within an electrical system. It acts like a central hub for electricity, allowing multiple circuits or devices to connect efficiently. Busbars are commonly used in power distribution panels, switchgear, transformers, and high-current applications like electric vehicles (EVs) and industrial machines.

Learn more here: Storm Power Busbar Design Guide

A flex braid (sometimes called braided flexible busbar or braided connector) is a type of flexible electrical conductor made from multiple fine metal wires woven or braided together. Its main purpose is to connect or ground high-current electrical components while allowing movement, vibration absorption, or thermal expansion.

Learn More Here: Flexbraid - Specialized Capabilities - Storm Power Components

Choosing insulation materials for busbars involves considering several tradeoffs based on their specific
properties and applications.

This new Applications Note details the tradeoffs for common insulation films used in busbars, including:

• PET (Polyethylene Terephthalate)
• Nomex
• Kapton (Polyimide)
• PEN (Polyethylene Naphthalate)
• Epoxy Powder Coat

For each of the alternatives, the App Note lists key parameters and tradeoffs that should be taken into account when making a selection.

• Thermal Performance
• Electrical Insulation Properties
• Mechanical Strength and Flexibility
• Chemical Compatibility
• Cost and Availability

Click here to read the Applications Note on Understanding Insulation Materials Options for Busbars

The difference between laminated and non-laminated (solid or traditional) busbars comes down to structure, electrical performance, mechanical characteristics, and applications. Here’s a detailed breakdown:

1. Structure

2. Electrical Characteristics

3. Advantages & Trade-offs

Laminated Busbar

• Advantages: Low inductance, reduced EMI, compact design, lighter weight, and combines many parts into one simple package which helps manage part numbers and simplify assembly.

• Trade-offs: Higher manufacturing cost, more complex design and insulation requirements.

Non-Laminated Busbar

• Advantages: Simple design, lower cost, easier to manufacture, robust for high-current but low-frequency applications.

• Trade-offs: Higher inductance, more EMI, less efficient in compact high-performance electronics, and more part numbers to procure and assemble.

💡 Key Takeaways:

• Laminated busbars are optimized for high-performance, compact, low-inductance, high-current applications, especially in EVs and inverters.

• Non-laminated busbars are better for traditional power distribution where size, weight, and EMI are less critical.

Learn More Here: Use Cases for Combining Laminated and Flexible Busbar Technologies 

Joining together multiple busbar segments is often a requirement for creating complex, unified busbar designs. In some cases, it may be necessary to create a longer busbar out of short segments or to incorporate T-segments into the design. Also adding bushings for mounting, insulation and/or mechanical strength are key factors for many busbar designs. This new Applications Note provides an overview of the key considerations that must be kept in mind for choosing the best approach, including:

• Mechanical Strength
• Electrical Integrity
• Material Compatibility
• Heat Management
• Lifecycle Performance
• Environmental Issues
• Production Efficiency
• Cost Effectiveness

Within this context, the App Note provides detail on three alternatives:

• Soldering (J-STC-001)
• Brazing (AWS C)
• Solderfree Press-fit

For each approach, we address how it fits with the overall design considerations and analyze the tradeoffs between the three alternatives.

Click Here to Read the Soldering, Brazing and Solderfree Applications Note

Selecting the right soldering and brazing methods for each customer’s specific requirements is critical for achieving the most cost effective production processes for their unique technical and business goals.

Storm Power has recently expanded our range of soldering and brazing process options to include induction process capabilities. Induction soldering and brazing offer several benefits compared to traditional heating methods like flame torches or ovens.

Key advantages include:

• Precision and Control
• Efficiency
• Safety
• Cleanliness
• Consistency
• Environmentally Friendly
• Flexibility

For more info Read the new Applications Note on Induction Soldering and Brazing

While there is no absolute maximum length for a busbar, the practical limitations imposed by mechanical stability, electrical performance, thermal management, and installation challenges must be carefully considered. Storm manufacturers some laminated busbars as long as 25 feet. Key factors to consider include:

• Mechanical stability and support
• Thermal expansion
• Electrical performance
• Heat dissipation
• Current distribution
• Manufacturing and installation issues
• Cost considerations

Click here for more information on these topics.

Edge design is crucial for busbars because it directly impacts several key factors related to performance, safety, and efficiency.
Key considerations include:
Compatibility and Fit: The design of busbar edges can affect how well they fit into housings or connect with other components, while optimizing safety, space, environment, and mechanical strength.
Environmental Robustness: Protecting busbars from environmental factors, improving durability, and enhancing performance.

This new Applications Note provides an overview of these four methodologies for sealing laminated busbars:

• Open Edge
• Pinch Sealed
• FR4
• Epoxy Edge Fill

Read the full App Note Here

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HiPot testing, short for high potential testing or high voltage testing, is a type of electrical safety test conducted to verify the insulation integrity and electrical strength of electrical components and systems. This test is crucial for busbars, which are conductive bars or strips used to distribute electricity within a system, often in industrial settings.

HiPot testing is performed to confirm that there is proper electrical isolation. A layer-to-layer HiPot test will verify that the multiple conductive layers within a laminated bus bar are sufficiently insulated from one another at a specified voltage.

Hipot tests can also be performed to verify the insulation surface will be sufficient. Surface tests are called "Holiday" tests. Generally, the HiPot test is run at an exaggerated voltage level of 2X the operating voltage plus 1,000 volts to ensure safety and performance even in extreme scenarios.

This new applications note provides a deeper dive into Best Practices for HiPot Testing of Busbars.

Key types of HiPot testing include:

• DC HiPot Testing
• AC HiPot Testing
• Surge Testing
• Insulation Resistance Testing
• Partial Discharge Testing
• Visual and Physical Inspection

Read the Full Applications Note on HiPot Testing for Busbars

Watch the video here:

Powder coating busbars offers important benefits, including:

• Increased Durability
• Electrical Insulation
• Aesthetic and Functional Finishes
• Chemical Resistance
• Environmentally Friendly Processes
• Cost-effectiveness
• Enhanced Performance

This new Applications Note from Storm Power focuses on the two key methods for powder coating busbars:

• Electrostatic Spray Powder Coating
• Fluidized Bed Powder Coating

The choice between electrostatic spray or fluidized bed powder coating is determined by the dielectric strength requirement of insulation application, the shape of the busbar, and the thickness of coating that is needed.

Download the Powder Coating Applications Note here.

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Aerospace and Defense applications are some of the most challenging deployments that electronic systems can face. 
For busbar manufacturing in the aerospace and defense industries, certifications include:

• AS9100 - This is the aerospace standard for quality management systems, which is based on ISO 9001 but includes additional requirements specific to aerospace
• NADCAP - The National Aerospace and Defense Contractors Accreditation Program provides accreditation for special processes used in the aerospace industry, ensuring
  compliance with industry standards.
• ITAR (International Traffic in Arms Regulations) - This certification is necessary if the busbars are involved in the manufacture or sale of defense items listed on the United
  States Munitions List.
• J-STD-001 soldering - This Standard describes materials, methods and acceptance criteria for producing soldered electrical and electronic assemblies.
• ISO 9001 - While AS9100 includes ISO 9001 requirements, some manufacturers may also seek ISO 9001 certification for broader market acceptance and quality management.
• Customer-specific requirements - Customers may also have specific additional requirements or certifications they expect from suppliers.

Storm Power’s dual-certified Quality Management System meets the ISO 9001:2015 requirements and the even stricter AS9100:D standards, as required by the Aerospace industry and the Department of Defense. This proven level of process control, with integrated layered quality gates, provides confidence that our products are manufactured the same way, every time, within specifications. Storm is also ITAR Certified & J-STD certified
For more information on busbars for aerospace & defense, Contact Storm Power Here

From a designer’s standpoint, dealing with inevitable movement is a two-step process.

• Step one is to understand the “budget” for movement by determining how much will result in either failure of the
  product being designed or the system it goes into.
• Step two is to incorporate mitigation methods that will bring vibration, shock, and expansion within the
  allowable parameters, while also managing the cost of mitigation to meet overall business objectives.

This new Storm Power Applications Note explores the key considerations for both assessing the sources of vibration, shock and expansion and designing appropriate mitigation methods to avoid exceeding required limits.

Key topics include:

• Design Methodologies to Mitigate Vibration, Shock and Expansion
• Geometric Design Considerations
• Incorporating Flexible Elements
• Designing Interconnects to Accommodate Stress
• Locating & Designing Mounting Points to Manage Stress
• Minimizing Expansion Mismatches Between Different Materials

Click Here to Read the Applications Note

Storm installs a large variety of clinch, captive, press fit, and other hardware. Some common ones are:

• PEM
• McMaster
• Amphenol
• Molex
• Methode
• Wurth
• Helicoils
• Keenserts
• Spiralock
• Bossard
• Many more…

Learn More Here: A Comprehensive Guide to Jointing Busbars: Which Method is Best? 

At Storm Power Components, our Quality Management System is tightly interwoven into our core values and is designed to provide both an over-arching set of guidelines and detailed processes to assure that quality objectives are consistently achieved. This document provides an overview how the combination of big-picture and precision-focused approach enables the world-class quality results our customers expect.

Our dual-certified Quality Management System meets the ISO 9001:2015 requirements and the even stricter AS9100:D standards, as required by the Aerospace industry and the Department of Defense. This proven level of process control, with integrated layered quality gates, provides confidence that our products are manufactured the same way, every time, within specifications.

Some of the key elements of Storm Power's Quality Management Program include:

• Materials Management and Traceability
• Labor Traceability
• Work-Center Focused Processes
• "One-up-One-Down" Cross Training of Work Center Staff
• Quality Validation of First Articles
• Advanced Laser Metrology Inspection

Storm’s end-to-end quality culture includes:

• Doing it Right the First Time
• Understanding How Every Task Fits Into the Big Picture
• Commitment to Excellence as Individuals and as a Team

This new article provides a deeper look into the guiding principles and specific aspects of Storm's Quality Program.

Download the Article Here

Reducing the weight of busbars while maintaining ampacity (the ability to carry current) can be challenging, especially for applications where weight is a critical factor, such as aerospace, automotive, etc.

Some of the key considerations for reducing busbar weight include: 

• Material Selection: Choose high-conductivity materials like aluminum or copper alloys that offer the
  required ampacity but are lighter than traditional materials.
• Optimized Cross-Sectional Design: Use a busbar design that optimizes the cross-sectional area. This
  can involve optimizing the height to width (d/w) ratio and/or using hollow or composite structures that
  maintain strength and conductivity while reducing weight.
• Advanced Manufacturing Techniques: Employ advanced manufacturing methods to create optimized
  busbar geometries that reduce material use while maintaining strength and conductivity.
• Integrated Cooling Systems: Incorporate cooling channels or systems into the busbars to improve heat
  dissipation, allowing for smaller cross-sections and reduced weight without overheating.
• Strategic Layout and Segmentation: Optimize the layout of busbars and segment them where possible
  to reduce overall weight while maintaining efficiency.

By addressing these key issues, it’s possible to achieve lighter busbars without compromising their ability to carry the required electrical currents.

This new Applications Note provides a deeper diver into the specific areas of materials choices, cross-sectional design, and advanced manufacturing techniques.

Download the App Note on Reducing Busbar Weight

One of the key elements for successful busbar integration involves the fastener strategy for mounting and securing it in place. When designing and implementing fastener methods for busbars, several key considerations are essential to ensure safety, efficiency, and reliability.

Key factors include:

• Mechanical Strength
• Corrosion Resistance
• Thermal Management
• Insulation and Isolation
• Ease of Installation and Maintenance
• Compliance with Standards
• Cost Effectiveness
• Compatibility with Busbar Designs
• Environmental Concerns

This new Applications Note on Fasteners provides detail on these key factors and explores the applicability of various approaches, including:

• Screws & Bolts
• Clinch Hardware
• Custom Supports and Clamps

It also provides insights into determining the best approach and balancing the tradeoffs.

Click Here to Read the Fasteners for Busbars Applications Note

Understanding thermal management issues and mitigation methods can be a critical factor for success with laminated busbars, especially when they are used in high-power applications.  If best practices are not followed, laminated busbars carrying high electrical currents can generate significant heat, which can pose both safety hazards and risk of equipment failure.

This new Applications Note from Storm Power Components provides an overview of key thermal management challenges, along with a discussion of how proper design, materials selection, cooling techniques and other mitigation factors can result in robust busbars that work within the overall product design to avoid risks of over heating.

Key topics include:

• Material Selection
• Cooling Techniques
• Busbars as Heat Sinks
• Design Optimization
• Thermal Insulation
• Modeling and Simulation
• Temperature Monitoring
• Optimizing for Low Inductance and Impedence

Click Here to Read the Applications Note

Integrating shielding and filtering into busbars is an important aspect of electrical system design, particularly in applications where electromagnetic interference (EMI) and electrical noise need to be minimized. EMI is radiated or conducted energy that adversely affects circuit performance, and thus disrupts a device’s electromagnetic compatibility (EMC).

This new Applications Note provides an overview of why shielding and filtering are important, along with a comprehensive exploration of the design methods and technologies that are key to success.

The key design techniques for integrating EMI management into busbars include:

• Wrapping with Copper Stamping or Conductive PSA Foil
• Potting with Conductive Epoxy
• Die Cutting Conductive Fabric
• Machining Barriers and Conductive Gaskets
• Laminating with Interleaved Grounds

The App Note also addresses how an end-to-end, comprehensive design approach can achieve the best balance of EMI mitigation and cost containment.  Key issues that must be considered include:

• Grounding and bonding
• Physical layout
• Component placement
• Material selection

It is important to note that the specific techniques and approaches for integrating shielding and filtering into busbars can vary depending on the application, system requirements, and regulatory standards.

Read the full Applications Note here.

Storm Power Components builds a variety of different busbars, single conductor, multi conductor, long, very short. Many of these go into cabinets and they interface with a number of different components. Typically in an electrical system you have filters, chokes, circuit breakers, fuses, or other components that interface to busbars in a Power Distribution System (PDS). At Storm, we also provide value-added services by adding components to the busbar itself to create a complete out-of-the-box PDS.

Benefits of integrating components on to busbars include:

• Space Savings
• Easier Maintenance and Upgrades
• Improved System Integration
• Weight Reduction
• Part numbers reduction
• Ease of Assembly

Learn More Here

Die fabrication is a critical factor in the design and production of electrical busbars. Proper integration of die fabrication into the overall end-to-end development process is key to reducing costs, shortening schedules, and assuring high quality production ramp-up.

Well managed die fabrication processes help with:

• Precision and Consistency
• Efficient Material Utilization
• Implementing Complex Geometries
• Enabling Customization

Key issues for success include:

• Die Design and Engineering
• Material Selection
• Manufacturing Processes
• Quality Control
• Cost Management

This new Storm Power Applications Note provides detail on all these issues as well as an overview of what to look for from a busbar maker when it comes to in-house die fabrication capabilities.

Download the Die Fabrication Applications Note