Infineon Technologies DD171N12KKHPSA2

Overview

DD171N12KKHPSA2 from Semikron is a press-pack dual-diode rectifier module rated for 1200 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 DD171N12KKHPSA2 datasheet, DD171N12KKHPSA2 pinout, DD171N12KKHPSA2 application, or DD171N12KKHPSA2 equivalent, key selection criteria include junction-to-case thermal resistance (0.126 °C/W per arm), surge current capability (6.6 kA @ 10 ms), on-state voltage (1.26 V @ 500 A, Tvj max), and pressure-contact Si pellet construction with AlN isolation.

Technical Context

This dual-diode module implements a two-arm, common-cathode configuration with silicon die mounted via pressure contact-no solder interconnect-enabling high-reliability operation under repeated thermal cycling. Each arm supports independent conduction with matched electrical characteristics and shares a common isolated copper baseplate.

Thermal performance is defined by transient junction-to-case impedance (ZthJC) modeled using seven RC network elements, supporting precise loss and temperature prediction in forced-air (KM17 + Papst 4650) or natural cooling (KM17, 60 W) setups with up to three modules per heatsink.

Key Specifications

Pinout & Package

DD171N12KKHPSA2 uses a press-pack module package with isolated copper baseplate, AlN ceramic insulation, and M1 (6 Nm ±15%) mechanical mounting bolts and M2 (6 Nm ±10%) terminal connection torque. Weight: 310 g. Creepage distance: 15 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKD 171/12, DD171N12KKHPSA2 delivers 14% higher continuous current and better thermal efficiency; versus DD171N16KHPSA2, it offers optimized cost-performance balance for standard 400–690 VAC industrial networks.

Availability

DD171N12KKHPSA2 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, renewable energy inverters, and DC power distribution systems requiring stable component supply across multi-year production cycles.

Supply support for DD171N12KKHPSA2 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, energy, and traction applications since 1951.

This part belongs to Semikron's DD-series press-pack rectifier modules, engineered for mission-critical AC/DC conversion where solder-free construction and thermal resilience are mandatory.

FAQ

What is the maximum junction temperature and how is it enforced?

The maximum junction temperature (Tvj max) is 150°C, verified under worst-case conditions including IFAVM at TC = 100°C and full VRRM reverse bias. Thermal design must ensure junction temperature stays below this limit using the published RthJC (0.126 °C/W per arm) and actual heatsink RthCA.

Does DD171N12KKHPSA2 support paralleling of multiple modules?

Yes-its matched dual-arm characteristics, symmetric thermal resistance, and pressure-contact construction enable reliable parallel operation. Designers must ensure equal busbar inductance and mechanical mounting torque (±15% on M1 bolts) to maintain current sharing within ±5% across modules.

What is the insulation test voltage and how is it applied?

The insulation test voltage is 3.0 kV RMS at 50 Hz for 1 second, applied between terminals and isolated baseplate. This validates the AlN ceramic barrier integrity and ensures safe operation in grounded systems with up to 1000 VAC line-to-line voltage.

How does the transient thermal impedance model assist thermal design?

The ZthJC analytical model (seven RC elements) enables accurate prediction of junction temperature during non-sinusoidal or pulsed loading-such as in regenerative braking or UPS transfer events-by integrating time-domain power loss profiles against the published τn and Rthn values.