INDUSTRY COMPONENT

Bonding wires

Bonding wires are ultra-thin conductive wires used to create electrical connections between semiconductor chips and their packages in LED arrays.

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Component Specifications

Definition
Bonding wires are fine, high-purity metallic wires (typically gold, aluminum, or copper) that establish electrical interconnections between the bond pads on a semiconductor die (such as an LED chip) and the corresponding terminals on its package substrate or lead frame. In LED arrays, these wires transmit electrical current to individual LED chips, enabling their illumination. The bonding process involves thermosonic or ultrasonic techniques to create metallurgical bonds at both ends of the wire.
Working Principle
Bonding wires function as conductive pathways by utilizing thermosonic or ultrasonic bonding. A capillary tool feeds the wire, and heat (thermosonic) or ultrasonic energy is applied to the wire tip, creating a metallurgical bond (ball bond or wedge bond) at the chip's bond pad. The wire is then looped to the package terminal, where a second bond is formed. This creates a low-resistance electrical connection that allows current to flow from the package to the semiconductor die.
Materials
High-purity gold (99.99% Au) with dopants like beryllium or copper for strength; alternative materials include aluminum (Al-1%Si) and copper (oxygen-free high conductivity). Diameter ranges from 15 μm to 50 μm.
Technical Parameters
  • Diameter 15-50 μm
  • Elongation 4-8%
  • Loop Height 100-300 μm
  • Resistivity 2.2-2.5 μΩ·cm (gold)
  • Tensile Strength 8-12 g-force
Standards
ISO 16750-4, JEDEC JESD22-A104, MIL-STD-883

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bonding wires.

bonding wires LED array wires semiconductor interconnects gold bonding wire wire bonding process thermosonic bonding Bonding wires in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

LED Array

A structured arrangement of multiple LED chips mounted on a substrate to form a lighting module.

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Output Buffer/Driver

Electronic circuit component that amplifies and conditions signals from counting circuitry for reliable transmission to external devices.

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Pass Element

The active component within a voltage regulator IC that controls the output voltage by adjusting its resistance.

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Engineering Analysis

Risks & Mitigation
  • Wire sweep during encapsulation
  • Kirkendall voiding at bonds
  • Corrosion in humid environments
  • Fatigue from thermal cycling
FMEA Triads
Trigger: Contamination on bond pads
Failure: Poor adhesion leading to bond lift-off
Mitigation: Implement strict cleaning processes and pad surface treatments.
Trigger: Excessive ultrasonic energy
Failure: Wire breakage or pad damage
Mitigation: Optimize bonding parameters through DOE and real-time monitoring.
Trigger: Thermal mismatch between materials
Failure: Fatigue cracking during temperature cycles
Mitigation: Use compatible materials and design for CTE matching.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Bond strength: ≥ 3 gf for 25 μm wire; loop height variation: ±15%
Test Method
Pull test (MIL-STD-883 Method 2011), shear test, visual inspection per IPC-A-610.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the most common materials for bonding wires in LED arrays?

Gold is most common due to its excellent conductivity and corrosion resistance; aluminum and copper are alternatives for cost-sensitive applications.

How does wire bonding affect LED performance?

Poor bonding can cause high resistance, overheating, or open circuits, leading to LED failure or reduced brightness.

What are the main bonding techniques?

Thermosonic ball bonding (common for gold) and ultrasonic wedge bonding (for aluminum or copper).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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