Infineon Technologies TT820N16KOFHPSA1

Overview

TT820N16KOFHPSA1 from Infineon Technologies is a pressure-contact, dual-arm phase-control thyristor module rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 820 A average on-state current at TC = 85°C (ITAVM), and 24.8 kA non-repetitive surge current (ITSM). It features electrically insulated baseplate, pre-applied thermal interface material (TIM), and is designed for high-reliability industrial power control in soft starters and UPS rectifiers.

For engineers reviewing the TT820N16KOFHPSA1 datasheet, TT820N16KOFHPSA1 pinout, TT820N16KOFHPSA1 application, or TT820N16KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.045 K/W per arm), critical dv/dt rating (1000 V/µs), gate trigger current (≤250 mA), and isolation test voltage (3.6 kV for 1 sec).

Technical Context

This dual-thyristor module implements phase-angle control in AC line-commutated applications, with symmetrical forward/reverse blocking capability and gate-controlled turn-on. Its pressure-contact construction eliminates wire bonds, enabling stable conduction under high di/dt (200 A/µs) and robust thermal cycling performance up to 135°C junction temperature.

The device operates with sinusoidal or rectangular conduction angles (30°–180°), delivering predictable on-state voltage (≤1.27 V at 1500 A) and slope resistance (≤0.23 mΩ). Its transient thermal impedance ZthJC is characterized analytically for precise loss modeling in drive rectifier and crowbar circuits.

Key Specifications

Pinout & Package

TT820N16KOFHPSA1 uses an industrial-standard press-pack module package with electrically insulated aluminum nitride (AlN) baseplate and 60 mm mounting footprint. Mechanical terminals follow DIN 46244 A (2.8 × 0.8 mm) for control pins and M2 (12 Nm) torque for main power terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar phase-control thyristor module applications.

Compared with TD820N16KOF, TT820N16KOFHPSA1 provides superior isolation and out-of-box thermal performance; versus TT1000N16KOF, it offers identical voltage rating and proven reliability in space-constrained soft starter designs without over-spec'ing footprint.

Availability

TT820N16KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, crowbar protection circuits, and static switches requiring stable component supply across multi-year industrial equipment lifecycles.

Supply support for TT820N16KOFHPSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power electronics, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

TT820N16KOFHPSA1 belongs to Infineon's High-Power Thyristor Module product line, engineered specifically for ruggedized AC power control in mission-critical industrial infrastructure including motor drives, energy storage systems, and uninterruptible power supplies.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is +135°C, as defined by the device's maximum junction temperature (Tvj max = 135°C) and thermal resistance (RthJC = 0.045 K/W per arm). At ITAVM = 820 A, the module achieves thermal equilibrium at this limit when heatsink resistance is ≤0.0075 K/W with TIM.

Does TT820N16KOFHPSA1 require external snubbers in standard AC line applications?

Snubbers are recommended for applications exceeding 1000 V/µs dv/dt or involving highly inductive loads. The device's (dvD/dt)cr = 1000 V/µs ensures immunity to typical line transients, but fast-switching inverters or transformer-coupled loads may demand RC snubbers to prevent spurious turn-on.

Can both thyristor arms be triggered simultaneously for DC switching?

No - simultaneous triggering of both arms creates a short circuit across the AC input. The arms are intended for complementary anti-parallel operation in AC phase control. For DC switching, external series inductance or forced commutation is required, and gate timing must be staggered to avoid shoot-through.

What is the significance of the "HPSA1" suffix in the full part number?

The "HPSA1" suffix denotes Infineon's internal production variant: H = high-reliability grade, P = pre-applied TIM, S = standard baseplate finish, A1 = first revision of the TIM-integrated assembly. It confirms full compliance with the published TT820N16KOF datasheet (Rev. 3.6, Nov 2025) and qualification per industrial standards.