Qualification of New MPP Bonding Tool for 12mils and 5 mils Al Bonding
MPP is proud to announce its recent success in qualifying heavy wire wedges (HWW) for 5 and 12 mil wires with a major Philippines sub-contractor specializing in production of power devices.
MPP’s main objective was to support the customer’s cost reduction and assurance of supply programs. MPP managed to engineer and deliver a set of HWW tools that supported these objectives by enabling the customer to qualify these tools as “drop in” replacements , fully transparent to the POR (Process of Record) without any need for parameter changes.
MPP offers a wide variety of heavy wire wedge solutions for all bonder models including:
✅ Extended life tools
✅ “No clean” tools
✅ Application Specific Customized Solutions
✅ Drop-in replacements for existing processes
Evaluation Process / Methodology
Comparison of Control (competitor’s existing tool) vs New MPP Bonding Tool
Process responses
Reading | Criteria |
No Non Stick / No Misplaced | Visual |
700g(12mils) / 100g(mls) | Wedge Shear Test |
250g(12mils / 60g(5mils) min | Wire Pull Test |
No Crater | Etch Test |
IGBT~FDO 1.2~1.6 / FDO~Leads 1.9~2.6 mm | Loop Height 12 mils |
1.9~2.8 mm | Loop Height 5 mils |
12Mils Bondability Test – Wire Pull Test
Remarks: no significant difference on Wire Pull Test on IGBT to FDO
Remarks: no significant difference on Wire Pull Test on FDO to Leads.
12Mils Bondability Test – Wedge Shear Test (WST)
Remarks: Parameter combination of Qual has the highest WST reading on IGBT.
Remarks: no significant difference on FDO Wedge Shear Test
12Mils Bondability Test – Wedge Shear Test
Remarks:. All legs passed wirebond criteria.
12Mils Bondability Test – Loop Height
Remarks: No Significant Difference on Loop Height at IGBT to FDO
12Mils Bondability Test – Visual
12Mils Bondability Test – Crater Test
5 Mils Bondability Test – Loop Height & Wire Pull Test
Remarks: No Significant Difference on WPT at 5mils.
Remarks: no significant difference on 5mils Loop Height
5 Mils Bondability Test – Wedge Shear Test
Remarks: No Significant Difference on WST at 5mils.
5 Mils Bondability Test – Visual
Remarks: No NSOP and misplaced bond on both 12mils and 5mils bond.
Summary
MPP bonding tool Passed all criteria using low, mid and high parameter settings.
