Copper Wire Bonding Training 铜线焊线培训 Prepared by: Ning wy

Content of Presentation 内容介绍 Advantages优点 Disadvantages缺点 Wire Bonding Cycle Material材料 Machine机器 Transfer Procedure from Au to Cu 转换步骤AU CU Cu Parameters Transfer Procedure from Cu to Au 转换步骤 CU AU Au Parameters Cu Pull and Ball Shear Cu Wire Bonding Problems铜线焊线常见问题

Advantages优点 -Cost saving 节约成本 -Higher electrical conductivity 较高的电导性 -Resistant to wire sweeping防止线下垂 -Compatible to Cu metallization 铜材料的兼容性

Disadvantages缺点 Control Ambient(95%N2/5%H2) 必须控制周围环境，加混合气体防止焊球氧化 Oxidation of Cu wire 铜线易氧化，必须放在氮气柜中保存, 拆开包装后保存期为4天 2nd bond bonding 第2个焊点问题

Wire Bonding Cycle Cavity bar

Ball Formation Reduced Atmosphere Cu oxides make the ball harder Oxidation Prevention Process Minimized gas turbulence Coating Cu wire(<7 angstrom) Bag sealing Preheat temperature: 175-225 C

Material 材料 Cu wire: 1.3mil,1.5mil,2mil Capillary劈刀 Cu wire size UTS-43IE-CM-1/16-XL 1.5mil UTS-48JF-CM-1/16-XL 2mil UTS-58LJ-CM-1/16-XL

Material 材料 Device : MZGR* Lead frame: 5FT 71302 注意：1 根据随工单上产品名称，选择相应BSA 2 确认正确的FRAME型号，线材料，线径和劈刀

Machine 机器 Dpak W/B AB339 7# 注意：1 所有铜线产品只能适用W/B AB339 7# 2 此机器的铜线与金线的转换必须由技术 员来完成 3 技术员必须经过培训，并严格按照转换 程序进行机器转换 4 转换后，技术员必须测拉力和推力，无 误后方可跑机

Transfer Procedure from Au to Cu 转换步骤AU CU 1. Change Cu capillary 换AU劈刀 2. Setup forming gas安装和检查gas 10% Forming gas Flow: 0.7+/- 0.1 l/min 3. Adjust the machine setting 3 Parameter 1Bond parameter 7 EFO parameter Wire type Copper

Transfer Procedure from Au to Cu 转换步骤 AU CU 4. CPU cold start machine 冷启动 5. Confirm 3rd item 确认第3项是否正确 Wire type Copper 6. Adjust the machine setting 机器设置 Ftn 15 0 Bonding tool 4 Safety control Bond Pt Tol Flag -Disable

Transfer Procedure from Au to Cu 转换步骤AU CU 7. Modify Cu parameters.(see annexe1) 修改CU线参数，见附件1 8. Conversion similar to Au 换产品，与AU线相似 9. Measure pull force and Ball shear 测试拉力和球推力 10. Check 检查

Cu Parameters Annexe1 Heater Block Temperature Pre heat: 265+/-5 Deg C Heater Block Temperature Heater: 260+/-5 Deg C 10% Forming gas Flow: 0.7 +/-0.1 l/min

Transfer Procedure from Cu to Au 转换步骤 CU AU Change Au capillary换AU劈刀 2. Adjust the machine setting机器设置 3 Parameter 1Bond parameter 7 EFO parameter Wire type Gold 3. CPU cold start the machine冷启动 4. Confirm 2nd item确认第2项是否正确 Wire type Gold

Transfer Procedure from Cu to Au 转换步骤 CU AU 5. Adjust the machine setting机器设置 Ftn 15 0 Bonding tool 4 Safety control Bond Pt Tol Flag -Disable 6. Modify Au parameters(see annexe2) 修改AU线参数，见附件2 7. Conversion换产品

Transfer Procedure from Cu to Au 转换步骤 CU AU 8. Measure pull force and Ball shear 测试拉力和球推力 9. Check 检查

Annexe2 Au Parameters

Cu Pull and Ball Shear 铜线拉力和推力测试最低值，及焊球大小

Cu Wire Bonding Problems 铜线焊线常见问题