| Era | Version | Key New Feature | |------|---------|------------------| | DOS | PADS-PCB (1985) | First PC-based layout | | Win 3.1 | PADS 4.0 (1996) | GUI, DRC | | Win 95/98 | PADS 2004 (2004) | OLE, differential pairs, 3D viewer | | XP/Vista | PADS 2005–2007 | BlazeRouter, variants | | Windows 7 | PADS 9.x (2010–2014) | Real-time DRC, basic rigid-flex | | Windows 10 | PADS VX.0 (2015) | Unified project file, 3D PDF | | Windows 10 | PADS VX.2 (2017) | Rigid-flex, Teamcenter | | Windows 10/11 | PADS Pro (2021) | Xpedition core, sketch routing, advanced constraints | | Windows 11 | PADS 2023–2024 | Cloud tools, ODB++ direct |
For decades, Mentor Graphics PADS (Personal Automated Design System) has served as a cornerstone tool for PCB designers, bridging the gap between complex enterprise-level solutions and entry-level hobbyist tools. This paper explores the version history of PADS, tracing its origins as an independent DOS-based solution through its acquisition by Mentor Graphics, the pivotal transition to Windows, and its modern incarnation under Siemens Digital Industries Software. The history of PADS is not merely a list of version numbers; it represents the broader evolution of the PCB design industry from flat, two-dimensional schematics to complex, multi-layer high-speed digital design.
A landmark release focused on design reuse. mentor graphics pads version history
The history of PADS begins not with Mentor Graphics, but with PADS Software, Inc., founded in 1986. The original product, known simply as PADS-PC, was a DOS-based application.
During this era, the software gained a reputation for having a highly efficient router and a user-friendly interface that relied heavily on keyboard macros (many of which are still supported in the software today as "Modeless Commands"). | Era | Version | Key New Feature
Following Siemens’ acquisition of Mentor Graphics (completed 2017), the first Siemens‑branded releases arrived in 2021, focusing on cloud collaboration and mechanical‑electrical co‑design.
| Version | Year | Siemens‑Era Features | |-------------|----------|----------------------------| | PADS Professional 1.0 | 2021 | Re‑branded from VX.2.11. Integrated Valor NPI (New Product Introduction) for DFM checks. | | PADS Professional 2.0 | 2022 | Xpedition‑like cage‑slot editor for backplanes. Real‑time BOM management via Siemens’ Capital platform. | | PADS Professional 3.0 | 2023 | Cloud Library Sync – share components across multiple users. 4K display scaling improvements. | | PADS Professional 3.1 | 2024 | Native USB‑C connector routing patterns. Automated fanout templates for BGAs (0.5mm pitch and below). | | PADS Professional 4.0 | Expected 2025 | (Roadmap hints at AI‑assisted placement and thermal simulation via Simcenter) | For decades, Mentor Graphics PADS (Personal Automated Design
Note: The classic “PADS Standard” still exists for smaller boards (up to 16 layers). “PADS Professional” now shares the same database engine as Xpedition Enterprise.