6ES7355-1VH10-0AE0
那我們就能通過仿真得到不同鉆孔孔徑時這個過孔的阻抗情況了，如下所示：從0.35mm的14mil到0.55mm的22mil鉆孔孔徑時的過孔阻抗。從仿真結果能看到，變化2mil鉆孔孔徑時對過孔的阻抗來說也是不小的變化。原本14mil設計過孔阻抗剛好能達到50歐姆，隨著加工的孔徑越來越大之后，真實的阻抗也是慢慢的往下降了。
那么你們所好奇的這個14mil的設計孔徑，板廠默認會用多大鉆刀去鉆孔呢？高速先生既然已經把這塊測試板做出來了，肯定是它的測試數據，我們逐一把仿真結果和測試結果進行對比，發現0.45mm鉆孔孔徑的仿真結果和真實的測試結果能更好的擬合上。也就是說，對于這個設計孔徑14mil的過孔來說，工廠會用0.45mm也就是18mil的鉆刀進行鉆孔，然后再電鍍成14mil的完成孔徑！
當然其他孔徑的過孔，高速先生也做了類似的仿真測試驗證，來證明板廠對不同設計孔徑所使用的鉆刀大小，這里由于篇幅關系就不一一列舉了。高速先生通過這篇文章想告訴大家的是，我們在進行過孔的PCB設計時，一定要提前估計到它在加工后的一些變化，尤其是在高速設計中，它的加工變化對通道的性能會產生不小的影響，要把這部分的裕量預留出來才是一個優秀的PCB設計！
6ES7355-1VH10-0AE0
KLA-TENCOR SURFSCAN 6420 USED
KLA TENCOR Surfscan 6220 Unpatterned Surface Inspection
KLA Tencor 2131 2132 2552 Defect Wafer Inspection Sys
KLA-Tencor Surfscan 6200 Wafer Surface Analysis System
KLA TENCOR 2131 WAFER DEFECT INSPECTION SYSTEM
KLA TENCOR CRS-1010S 200MM WAFR CONFOCAL REVIEW STATION
Wyko Veeco NT2000 Optical Profiler Zygo KLA Tencor
KLA-Tencor Prometrix FT-750 Film Thickness Measurement
KLA-Tencor Prometrix FT-750 Film Thickness Measurement
KLA-Tencor CRS 3000 300MM COMPLETE SYSTEM
KLA Tencor Ultrapointe Laser Imaging System LIS-1010
KLA Tencor Surfscan 4500
KLA-Tencor Prometrix FT-600 Film Thickness Measurement
KLA-Tencor 2139 ECS Theta Z Assy. 740-695328-000 new
KLA-Tencor AIT 2 Upper Opto-Mech NNC 0024755-001
KLA-Tencor AIT 2 Rear Collector Assy. 0032129-000
KLA-Tencor AIT 2 Front Collector Assy. 0032131-001
KLA-Tencor AIT Upper Opto-Mech 0024755-000 working
KLA-Tencor AIT 2 Collector Assy. 0074311-000 working
KLA-Tencor AIT Rear Collector Assy. 0074307-000 working
KLA-Tencor AIT2 AIT3 Rear Collector Assy. 562556
KLA-Tencor AIT 2 Upper Optoc-Mech 0024755-001 working
KLA-Tencor Surfscan 6220 Inspection Tool AS-IS
KLA-Tencor AIT 2 Measurement Head 0021726-001 working
KLA Tencor 2135 CMP Wafer Inspection Robot Loader Assy
KLA-Tencor AIT 2 Optics Module 0099610-000 untested
KLA-Tencor 2139 Software v5.3.49 Standard 0027325-000
KLA TENCOR DIGITAL DEFLECTION GENERATOR 701-603180-003
KLA - Tencor KIT , 190 ANALYZER FRU II 0145772-000
PRI KLA-Tencor Robot Track TRA035-LPS working
KLA-Tencor AIT 2 3 Front Collector Assy. 562610
KLA-Tencor Quantox 64000 Cooling Module working
KLA-Tencor Quantox 64000 Cooling Module working
KLA-Tencor AIT2 CPM Power Assembly 0218541-000
KLA-Tencor 2139 Sony DXC-9000 Camera 740-772299-000 Kit
KLA-Tencor 2135 Vertical Illuminator 760-663761-001 new
KLA-Tencor 2135 to 2138 Upgrade Kit 780-696341-000
KLA-Tencor 780-689330-000 5.2 Autoloader XP UP Kit 2139
KLA-Tencor 2138 Motorized 200mm Retrofit 780-666008-000
KLA - Tencor eS35 IA Board PN: 0134014-002
KLA-TENCOR 0111816-000 MCP10-DPRC CARD MERCURY COMPUTER
KLA-Tencor NEAT CRS1010 200mm Wafer Stage Controller
KLA-Tencor SLX MAC Box Assy. 770-336660-001 untested
KLA-Tencor AIT Lens Module 0034691-000 working
KLA-Tencor 2139 Dual CPU Computer 740-695784-001
KLA TENCOR IMAGE DATA STORAGE SYSTEM 710-612545-004/AA
KLA/Tencor/Tokyo Electron VIP Card Board TEL
KLA Tencor Camera Timer 710-714647-00
Aerotech KLA-Tencor Aerotech DR 500 Controller 510432
Aerotech KLA-Tencor AIT 2 DR 500 Controller 510432
KLA-Tencor AIT 2 Timing Generator Board 0053946-000
KLA-Tencor AIT 2 MMD Analog Board 565040 working
KLA-Tencor AIT 2 MMD Analog Board 565040 working
KLA-Tencor SLX RF Bench Assy. 740-336864-001 working
KLA-Tencor 301 I-Line RF Bench 740-323100-002 working
KLA-Tencor 710-680976-002 EMC WIB2 Board New
KLA-Tencor AIT 2 AOD GPIO Assy. 0017499-000 working
KLA-Tencor Cobra Shipping Filter Assy 0107339-000 Used
KLA-Tencor SLX Objective Lens 760-334096-000 Untested
KLA-Tencor 395005 Tropel 14X CYL Telescope-1 AIT2 New
KLA-Tencor AIT UV COLL Side Polarizer 0024476-001 New
KLA-Tencor Retrofit Optics Beamsplitter 0099602-001 New
KLA-Tencor Cannon Box Magazine Assembly 740-060658-001
KLA-Tencor Lower Octopole/Wein Lens 780-14108-000
KLA-Tencor Lower Octopole/Wein Lens 780-14108-000
KLA Tencor 710-711754-00 Autofocus Board
KLA Tencor 710-711567-00 Communication interface II
KLA Tencor X/Y Interface 710-720011-01 Rev B6
6ES7355-1VH10-0AE0
在線咨詢 
