Tool

  1. Position

  2. Clamping Force

  3. Characteristics

  4. Bondability

  5. Condition of Bonding Surface

  6. Geometry

  7. Bonding Surface Area

Work Holder

  1. Temperature

  2. Heat Transfer

  3. Rigidity

  4. Environment

  5. Stability

  6. Positioning Accuracy

  7. Synchronization

Wire

  1. Size

  2. Type

  3. Breaking Load

  4. Elongation

  5. Purity

  6. Uniformity

  7. Twist / Curl

  8. Surface Condition

  9. Bondability

Bonded Wire

  1. Ball Formation

  2. Wire Recrystallization

  3. Wire / Tool Interface

  4. Geometry

  5. Optimized Bonding Schedule

  6. Location

  7. Wire Curl

  8. Intermetallics

  9. Time / Temperature Environment

  10. Bond Interface Condition

  11. Ergonomic

Bonder

  1. Calibration

  2. Optimized Bonding Schedule

  3. Operator Skills

  4. Ergonomics

  5. Time

  6. Temperature

  7. Ultrasonic Energy

  8. Synchronization

  9. Bondability

  10. Bond Pressure

Bonding Surface

  1. Metal Purity

  2. Metal Uniformity

  3. Metal Thickness

  4. Surface Contamination

  5. Surface Texture

  6. Metal Bondability, Initial

  7. Metal Bondability After Time / Temperature