Wire Bonding Machine

Product Specifications

Technical details and manufacturing context for Wire Bonding Machine

Definition

A wire bonding machine is an automated semiconductor assembly device that forms electrical connections between integrated circuit chips and their lead frames or substrates using ultra-fine wires (typically gold, aluminum, or copper). It employs thermosonic, thermocompression, or ultrasonic bonding techniques to create reliable interconnections at microscopic scales, enabling signal transmission and power distribution in electronic packages. The machine operates by positioning a semiconductor die and substrate under a bonding tool. A fine wire is fed through a capillary, where the first bond is formed on the chip pad using heat, pressure, and/or ultrasonic energy. The capillary then moves to the corresponding substrate pad while forming a controlled wire loop, where the second bond is made. The wire is then cut, completing one interconnection. This process repeats at high speed for multiple connections per device. Typical performance parameters include a bonding speed of 10–30 bonds per second, bond force of 10–150 gf, bond temperature of 150–250 °C, positioning accuracy of ±0.01 mm, and wire diameter range of 0.015–0.050 mm. The machine requires an operating pressure of 0.4–0.6 MPa, operating temperature of 15–35 °C, humidity range of 30–70% RH, and a 220 V AC ±10% single-phase power supply. It weighs 800–1200 kg and has a footprint of 1.2 m × 1.0 m. The IP rating is IP54 per IEC 60529. Materials on file include gold, aluminum, and copper wires, ceramic capillaries, and tungsten carbide bonding tools. These values are reference ranges; verify model-specific specifications with the manufacturer.

Working Principle

The machine positions a semiconductor die and substrate under a bonding tool. A fine wire is fed through a capillary, where the first bond is formed on the chip pad using heat, pressure, and/or ultrasonic energy. The capillary then moves to the corresponding substrate pad while forming a controlled wire loop, where the second bond is made. The wire is then cut, completing one interconnection. This process repeats at high speed for multiple connections per device.

Common Materials

Gold Wire, Aluminum Wire, Copper Wire, Ceramic Capillaries, Tungsten Carbide Bonding Tools

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bonding SpeedRequired	10–30 bonds/second	Maximum number of wire bonds the machine can complete per second
Bond ForceRequired	10–150 gf	Force applied during the bonding process to ensure proper wire deformation and adhesion
Bond TemperatureRequired	150–250 °C	Heater temperature at the bonding stage for thermosonic or thermocompression bonding
Positioning AccuracyRequired	±0.01 μm	Precision of bond placement relative to target pad coordinates
Wire Diameter RangeRequired	0.015–0.050 μm	Minimum and maximum wire diameters the machine can handle
Operating Pressure	0.4–0.6 MPa	Pressure for pneumatic system; below 0.4 MPa may cause insufficient force.
Operating Temperature	15–35 °C	Outside this range, bonding quality may degrade.
Humidity Range	30–70 % RH	High humidity can cause oxidation of wire and bond pads.
Power Supply	220 ±10% V AC	Single phase, 50/60 Hz.
Machine Weight	800–1200 kg	Weight affects installation and floor loading.
Footprint	1.2 × 1.0 m	Dimensions (W × D) for planning production layout.
IP Rating	IP54	Protection against dust and water splashes.IEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Bond Head
Precision mechanism that holds the capillary and performs the bonding motion with XYZ positioning

Material: Aluminum alloy with ceramic guides
Capillary Part
Ceramic tool that guides the bonding wire and applies force/ultrasonic energy to form bonds

Material: Alumina ceramic or zirconia
Wire Spool Assembly
Holds and feeds the bonding wire with controlled tension to the bonding head

Material: Plastic spools with stainless steel tensioners
Heater Stage
Heats the substrate or lead frame to optimal temperature for thermosonic bonding

Material: Ceramic heating elements with aluminum nitride plates
Vision System
High-resolution camera system that locates bond pads and aligns the bonding tool

Material: CCD/CMOS sensors with optical glass lenses
EFO (Electronic Flame-Off) Unit
Creates a molten ball at the wire tip for ball bonding by discharging high voltage

Material: Tungsten electrodes with ceramic insulation
Bonding Wire
The fine wire fed through the capillary that forms the interconnection.

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	0.5-2.0 N (bond force range), 0.1-0.5 MPa (capillary pressure)
other spec:	Wire diameter: 15-50 μm, Bond pitch: 30-100 μm, Throughput: 5-15 bonds/second
temperature:	15-30°C (operating environment), 150-300°C (bonding temperature range)

Media Compatibility

✓ Gold bonding wire (Au) ✓ Copper bonding wire (Cu) ✓ Aluminum bonding wire (Al)

Unsuitable: High-vibration environments (exceeding 0.5g RMS)

Sizing Data Required

Die size and pad layout (number of bonds required)
Production throughput requirements (units/hour)
Wire material and diameter specifications

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Bond pad contamination

Cause: Accumulation of foreign particles (dust, oxides, organic residues) on bonding surfaces due to inadequate cleaning procedures, environmental exposure, or material degradation, leading to poor adhesion and bond strength.

Capillary tip wear

Cause: Progressive mechanical degradation of the capillary tool from repeated high-force impacts during bonding cycles, exacerbated by misalignment, improper material selection, or excessive bonding parameters, resulting in inconsistent wire deformation and bond quality.

Maintenance Indicators

Audible: Unusual high-pitched screeching or grinding noises from the bonding head during operation, indicating excessive friction or mechanical misalignment.
Visual: Irregular or inconsistent wire loop shapes or bond footprints observed under magnification, signaling tool wear, contamination, or parameter drift.

Engineering Tips

Implement a strict preventive maintenance schedule for capillary replacement and bond head calibration based on cycle counts, not just runtime, to preempt wear-related failures.
Establish and enforce controlled cleanroom protocols (e.g., ISO Class 5-7) with regular particle monitoring and substrate cleaning validation to minimize contamination-induced bond defects.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

CE Marking (EU Machinery Directive 2006/42/EC)

Quoted from the published standard.

Manufacturing Precision

Bond Placement Accuracy: +/- 5 μm
Wire Loop Height Consistency: +/- 10% of target

Quality Inspection

Pull Test (MIL-STD-883 Method 2011.7)
Bond Shear Test (JEDEC JESD22-B116)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Wire Bonding Machine

9 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Changzhou Ruide Drying

Jiangsu, CN

Founded 20155~50 staff3,000-5,000 square meters

ISO9001 CE

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