PCB Libraries, Inc. | https://www.pcblibraries.com/forum/land-pattern-calculation-of-gull-wing-lead-parts_topic1314_page1.html
. These 7 factors are used to calculate the optimum Land Size Component Body Tolerance – ± 4 Mil (0.1) thru ± 12 (0.3) Component Terminal Tolerance – ± 8 Mil (0.2) thru ± 20 Mil (0.5
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/land-pattern-calculation-of-gull-wing-lead-parts_topic1314_post5184.html
. These 7 factors are used to calculate the optimum Land Size Component Body Tolerance – ± 4 Mil (0.1) thru ± 12 (0.3) Component Terminal Tolerance – ± 8 Mil (0.2) thru ± 20 Mil (0.5
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/leadfree.pdf
Atmosphere:Nitrogen Temperature:240°C Excellent Wetting at Toe Due to Nitrogen Small, acceptable voids 20 mil QFP Lead PROPRIETARY AND CONFIDENTIAL INFORMATION Pages: 18 of 24 Rev Level: 1 Rev Date: 1/03/01 Test # 10 Material
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/04/leadfree.pdf
Atmosphere:Nitrogen Temperature:240°C Excellent Wetting at Toe Due to Nitrogen Small, acceptable voids 20 mil QFP Lead PROPRIETARY AND CONFIDENTIAL INFORMATION Pages: 18 of 24 Rev Level: 1 Rev Date: 1/03/01 Test # 10 Material
1st Place Machinery Inc. | http://www.firstplacemachinery.com/smt_pcb_screen_printers_mpmultraprint100.html
. It is capable of printing 20 mil pitch or better with the optional semiautomatic vision system, application dependent. The magnetic tooling and vacuum board hold down system allows for rapid changeover between products and easy loading and unloading of PCBs
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/avx-turbocap-footprint_topic42_post111.html
) Component Terminal Tolerance – ± 8 Mil (0.2) thru ± 20 Mil (0.5) Fabrication Tolerance – ± 2 Mil (0.05 mm) Placement Tolerance – ± 1 Mil (0.025 mm) Land Size Round-off
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/avx-turbocap-footprint_topic42_post111.html
) Component Terminal Tolerance – ± 8 Mil (0.2) thru ± 20 Mil (0.5) Fabrication Tolerance – ± 2 Mil (0.05 mm) Placement Tolerance – ± 1 Mil (0.025 mm) Land Size Round-off
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic42&OB=DESC.html
) Component Terminal Tolerance – ± 8 Mil (0.2) thru ± 20 Mil (0.5) Fabrication Tolerance – ± 2 Mil (0.05 mm) Placement Tolerance – ± 1 Mil (0.025 mm) Land Size Round-off
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/densly-packing-tall-components_topic1266_post4987.html
- Least = 5 mil (0.12 mm) Nominal = 10 mil (0.25 mm) Most = 20 mil (0.50 mm) The User can change the courtyard excess value to anything you want in User Preferences or on the fly in the IPC Calculator
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic1266&OB=ASC.html
- Least = 5 mil (0.12 mm) Nominal = 10 mil (0.25 mm) Most = 20 mil (0.50 mm) The User can change the courtyard excess value to anything you want in User Preferences or on the fly in the IPC Calculator
