Infineon Technologies DD171N16KHPSA2

Overview

DD171N16KHPSA2 from Semikron is a press-pack dual-diode rectifier module with 1600 V repetitive peak reverse voltage (VRRM), 171 A average on-state current (IFAVM) at TC = 100°C, and 270 A RMS on-state current (IFRMSM), designed for high-power industrial AC/DC conversion in six-pulse bridge configurations.

For engineers reviewing the DD171N16KHPSA2 datasheet, DD171N16KHPSA2 pinout, DD171N16KHPSA2 application, or DD171N16KHPSA2 equivalent, key selection criteria include junction-to-case thermal resistance (0.130 °C/W per module), surge current rating (5600 A @ Tvj max), and pressure-contact Si pellet construction with AlN isolation for high-reliability traction and medium-voltage drive systems.

Technical Context

This dual-diode module implements a symmetrical, isolated-arm configuration optimized for B6 six-pulse rectification. Each arm supports independent thermal management with separate case terminals and shares a common heatsink interface via M1/M2 mounting points.

It uses silicon die with pressure-contact metallization and aluminum nitride (AlN) internal insulation to sustain 150 °C maximum junction temperature under continuous conduction. The transient thermal impedance ZthJC follows a 7-term analytical model with time constants ranging from 1.4 ms to 1.68 s.

Key Specifications

Pinout & Package

DD171N16KHPSA2 is housed in a press-pack module with two isolated power arms and a common heatsink base. Mechanical terminals are M1 (mounting) and M2 (electrical connection); no traditional pin count applies-current paths are defined by top and bottom pressure-contact surfaces per arm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current rectifier module applications.

Compared with SKD171/16 and DD180N16K, DD171N16KHPSA2 offers superior surge robustness and pressure-contact longevity at the expense of solder-process compatibility-making it optimal for mission-critical industrial rectifiers where field reliability outweighs assembly flexibility.

Availability

DD171N16KHPSA2 is available at Aetrix Electronics and suitable for industrial motor drives, traction converters, renewable energy inverters, and medium-voltage UPS systems requiring stable component supply across multi-year production cycles.

Supply support for DD171N16KHPSA2 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

Semikron is a German power semiconductor manufacturer specializing in high-reliability modules for industrial, traction, and renewable energy applications since 1951.

This part belongs to Semikron's "Netz-Dioden-Modul" (grid diode module) product line, engineered for high-efficiency, high-reliability AC/DC conversion in harsh environments with extended thermal cycling and mechanical vibration.

FAQ

What is the mounting torque specification for DD171N16KHPSA2?

The mechanical mounting torque (M1) is 6 Nm ±15%, and the electrical terminal torque (M2) is 6 Nm ±10%. These values ensure consistent thermal contact resistance and low-inductance current paths while preventing ceramic fracture in the AlN isolation layer. Torque must be applied using calibrated tools and verified per Semikron Application Note AN-1311.

Does DD171N16KHPSA2 require forced cooling?

No-it supports both natural and forced air cooling. With KM17 (60 W) heatsink, it delivers 171 A IFAVM at 100 °C case temperature under natural convection. Forced cooling with Papst 4650 fan increases current capacity and reduces RthCA to 0.026 °C/W in the first thermal time constant, improving dynamic response.

What is the isolation voltage rating?

The insulation test voltage is 2.5 kV RMS at 50 Hz for 1 minute between terminals and baseplate. This rating complies with IEC 60747-9 and ensures safe operation in grounded systems with ≤1000 V AC line voltage. Creepage distance is 15 mm, meeting reinforced insulation requirements for functional safety applications.

Can DD171N16KHPSA2 be used in single-phase rectification?

Yes-each arm operates independently and can be wired for single-phase full-wave rectification. However, the module's dual-arm symmetry and thermal design are optimized for three-phase B6 bridge use. Single-phase operation requires derating IFAVM by ~15% due to uneven thermal distribution and higher ripple-induced RMS current stress.