The Mersen A70P400-4 is a high-reliability thyristor (SCR) power module engineered to deliver precise and efficient control of AC and DC power circuits. Rated at 70A and 400V, this module incorporates a proven silicon thyristor construction within a compact, industry-standard package that simplifies integration into new and retrofit power systems. Mersen, long recognized for their expertise in power semiconductor components and advanced materials, has built the A70P400-4 to meet demanding industrial operating requirements including elevated thermal cycling and continuous conduction loads.

The A70P400-4 is widely used across a broad range of industrial and commercial power applications. Common deployment areas include phase-controlled AC motor drives, soft starters, industrial heating and temperature regulation systems, UPS and power conditioning equipment, welding power supplies, and DC bus regulation circuits. Its dependable gate triggering characteristics and low on-state voltage drop make it a preferred choice for engineers designing high-efficiency power conversion stages where thermal management and system reliability are paramount.

Quick Reference: A70P400-4

Key Features:

• 70A continuous current rating suitable for medium-power industrial applications
• 400V blocking voltage providing reliable operation in standard AC line environments
• Mersen thyristor technology with stable gate trigger parameters and low latching current
• Industry-standard module footprint enabling straightforward drop-in replacements and upgrades
• Low on-state voltage drop for improved system efficiency and reduced heat dissipation
• Robust construction designed to withstand thermal cycling and harsh industrial operating conditions

Sourcing reliable thyristor modules like the A70P400-4 can be a challenge, especially when dealing with obsolete designs, long manufacturer lead times, or urgent production demands. ATI Accurate Technology maintains inventory of hard-to-find and long-lead-time power semiconductors including Mersen SCR and thyristor modules, ensuring you can keep your production lines and equipment running without costly delays. Whether you need a single replacement or a larger quantity for a production build, ATI is equipped to fulfill your requirements quickly and accurately.

Contact ATI Accurate Technology today to order the A70P400-4 or to speak with a knowledgeable power semiconductor specialist. Call us at 239-734-7566, email sales@igbts.us, or place your order online at igbts.us. Orders received before 5PM EST qualify for same-day shipping.