In high-volume semiconductor backend manufacturing, wire bonding remains the most cost-effective interconnect technology for mainstream integrated circuits. The KAIJO FB-x26 is a fully automatic thermosonic wire bonder designed to deliver high units-per-hour (UPH) while maintaining stable loop control and bond reliability.
The system is widely deployed in OSAT and IDM production lines supporting consumer electronics, memory devices, and power semiconductors, where throughput efficiency and equipment uptime directly impact manufacturing cost structure.
Wire Bonding Process Capability
The FB-x26 supports both fine wire and heavy wire applications, enabling compatibility with gold (Au), copper (Cu), and palladium-coated copper (PCC) bonding wires. It is engineered to manage thermo-mechanical bonding conditions required for stable intermetallic formation at both first and second bond interfaces.
EFO Control (Electronic Flame-Off): Stable Free Air Ball (FAB) formation through controlled spark energy regulation, ensuring consistent first bond quality.
Loop Trajectory Control: Programmable loop shaping (including standard, S-shaped, and multi-tier loops) for stacked die and complex routing architectures.
Thermosonic Bonding: Combined ultrasonic energy, heat, and force control for reliable stitch bonding across different pad metallizations.
Vision System & Alignment Control
A high-speed Pattern Recognition System (PRS) enables accurate detection of bonding pads and leadframe fiducials. The vision system compensates for mechanical misalignment, substrate distortion, and thermal expansion variations during operation.
This ensures consistent wire placement accuracy even under high-speed continuous production conditions, improving overall yield stability.
Application Domains
Memory & Logic Devices
DRAM and NAND packaging
Microcontrollers (MCU) and logic ICs
System-in-Package (SiP) modules
Power Semiconductor Devices
Power MOSFETs and IGBTs
Rectifiers and diode packages
Power management ICs (PMICs)
Consumer Electronics
Mobile and wearable device ICs
Home appliance control systems
Technical Specifications (Typical Configuration)
| Parameter | Specification |
|---|---|
| System Type | Fully automatic thermosonic wire bonder |
| Supported Wire Materials | Gold (Au), Copper (Cu), Palladium-Coated Copper (PCC) |
| Bonding Accuracy | ±2.0 μm to ±3.0 μm @ 3σ (process dependent) |
| Wire Diameter Range | 15 μm – 50 μm (0.6–2.0 mil) |
| Substrate Compatibility | Leadframes, organic laminates, strip carriers |
| Throughput | High-UPH optimized continuous production mode |
Backend Packaging Workflow Integration
The FB-x26 is positioned after die attach and serves as the primary electrical interconnect formation stage in semiconductor backend assembly.
Wafer dicing → Die attach (epoxy / sintered die attach) → Wire bonding (FB-x26) → Encapsulation → Singulation → Final test
Engineering Evaluation
Copper Wire vs Gold Wire Process Handling
Copper wire bonding introduces oxidation and hardness challenges compared to gold. The FB-x26 compensates through optimized EFO energy control, stable FAB formation, and controlled bonding atmosphere to ensure reliable first-bond integrity.
Support for Stacked Die Architectures
Programmable loop shaping enables multi-tier wire routing required in stacked die and multi-chip module (MCM) packaging without mechanical modification.
Positioning vs Advanced Bonding Platforms
The system is optimized for cost-efficient, high-volume manufacturing. Ultra-fine-pitch advanced bonders target sub-30 μm interconnects, while FB-x26 focuses on mainstream semiconductor packaging with stable yield and high throughput.
Summary
The KAIJO FB-x26 wire bonder provides a high-throughput, cost-effective solution for mainstream semiconductor manufacturing. By combining thermosonic bonding stability, flexible loop programming, and multi-material wire compatibility, it supports large-scale production of memory, logic, and power devices with consistent yield performance.
Request Technical Specification or Quotation
Detailed equipment specification sheet
Gold vs Copper wire process compatibility report
System configuration options
Production line integration consulting
Contact engineering team for technical evaluation or quotation support.
