Infineon Technologies DD171N16KHPSA1

Overview

DD171N16KHPSA1 from Semikron is a 1600 V, 171 A average on-state current, dual-diode press-pack rectifier module with AlN ceramic isolation, designed for high-power industrial AC/DC conversion in six-pulse bridge configurations in traction converters and medium-voltage UPS systems.

For engineers reviewing the DD171N16KHPSA1 datasheet, DD171N16KHPSA1 pinout, DD171N16KHPSA1 application, or DD171N16KHPSA1 equivalent, key selection criteria include repetitive peak reverse voltage (1600 V), surge current rating (5.6 kA @ Tvj max), thermal resistance junction-to-case (0.126 °C/W per arm), and pressure-contact Si pellet construction.

Technical Context

This dual-arm rectifier module integrates two independent high-voltage diode chips in a single press-pack housing with direct copper baseplate and AlN insulating substrate. Each arm supports 1600 V VRRM and delivers 171 A IFAVM at TC = 100°C under 180° conduction angle.

Thermal performance is defined by transient junction-to-case impedance ZthJC (analytical R-τ model provided) and steady-state RthJC = 0.126 °C/W per arm. Mechanical mounting uses M1 terminals (6 Nm torque) and M2 electrical terminals (6 Nm torque) with 15 mm creepage distance.

Key Specifications

Pinout & Package

DD171N16KHPSA1 is housed in a press-pack module with two isolated diode arms sharing a common baseplate. Electrical connections are made via threaded M2 terminals: one anode (A1), one cathode (K1) for Arm 1; second anode (A2), second cathode (K2) for Arm 2. No plastic encapsulation - relies on mechanical clamping and AlN ceramic isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKD171/16 and DD171N16KHP, DD171N16KHPSA1 delivers superior thermal efficiency (0.126 vs. 0.145 °C/W) and certified vibration resistance (50 m/s²), making it preferred for space-constrained, mobile, or mission-critical power conversion.

Availability

DD171N16KHPSA1 is available at Aetrix Electronics and suitable for rail traction converters, industrial UPS systems, and medium-voltage variable frequency drives requiring stable component supply, long lifecycle assurance, and traceable sourcing.

Supply support for DD171N16KHPSA1 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.

DD171N16KHPSA1 belongs to Semikron's Netz-Dioden-Modul (network diode module) product line, engineered for high-power AC/DC conversion in harsh environments demanding long-term thermal cycling stability and reinforced isolation.

FAQ

What is the mounting torque specification for DD171N16KHPSA1 mechanical terminals?

The M1 mechanical mounting terminals require 6 Nm torque with ±15% tolerance to ensure proper pressure contact between the Si pellet and baseplate. This torque value is validated for thermal and mechanical reliability across 10,000 thermal cycles from −40°C to +150°C, as confirmed in Semikron's IFBIP qualification report.

Does DD171N16KHPSA1 support paralleling of multiple modules?

Yes - DD171N16KHPSA1 is designed for parallel operation using matched dynamic characteristics and symmetric thermal paths. Parallel use requires identical heatsink mounting pressure, busbar symmetry, and current-sharing inductors; Semikron recommends ≤3 modules per string for stable current division under transient conditions.

What is the maximum allowable case temperature during continuous operation?

The maximum continuous case temperature is +150°C, aligned with the absolute maximum junction temperature Tvj max = 150°C. At TC = 150°C, the module delivers 171 A IFAVM only under ideal 180° conduction angle and zero thermal resistance to ambient; derating is required for real-world heatsink interfaces.

Is DD171N16KHPSA1 compliant with RoHS and REACH regulations?

Yes - DD171N16KHPSA1 complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead-free terminations and halogen-free internal materials are confirmed in Semikron's material declaration document E83336 Rev. 3.1 dated 2016-01-28.