Infineon Technologies ND350N16KHPSA1

Overview

ND350N16KHPSA1 from Semikron is a press-pack dual-diode rectifier module rated for 350 A average on-state current (IFAVM), 1600 V repetitive peak reverse voltage (VRRM), and 13,000 A non-repetitive surge current (IFSM) at 10 ms. It uses silicon die with AlN ceramic isolation and is designed for high-power industrial AC/DC conversion in six-pulse bridge (B6) configurations.

For engineers reviewing the ND350N16KHPSA1 datasheet, ND350N16KHPSA1 pinout, ND350N16KHPSA1 application, or ND350N16KHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.124 °C/W), on-state voltage (1.28 V max at 1000 A), pressure-contact mechanical mounting, and compatibility with forced-air-cooled KM17 heatsinks in motor drive and traction converter systems.

Technical Context

This dual-diode module implements a BIP-AC (bipolar AC) configuration with two independent, isolated diode arms in a single press-pack housing. Each arm supports full-wave rectification with identical electrical ratings: 1600 V VRRM, 350 A IFAVM at TC = 100°C, and 0.4 mΩ slope resistance (rT) at Tvj max.

Thermal performance is defined by transient junction-to-case impedance ZthJC (analytical R–τ model provided), DC RthJC of 0.124 °C/W, and case-to-heatsink resistance RthCH ≤ 0.04 °C/W. Mechanical mounting requires 12 Nm torque on M2 terminals and 5 Nm on M1 fasteners, with 24 mm creepage distance and 700 g mass.

Key Specifications

Pinout & Package

ND350N16KHPSA1 is housed in a press-pack module with two isolated diode arms. Electrical connections are made via M2 screw terminals (12 Nm torque) for anode/cathode; mechanical clamping uses M1 fasteners (5 Nm torque). Internal isolation uses aluminum nitride (AlN) ceramic. No discrete pin numbering applies-terminals are functionally labeled Anode 1 / Cathode 1 / Anode 2 / Cathode 2 on the baseplate.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKD 350/16 and DD900N16K, ND350N16KHPSA1 offers superior surge robustness and validated transient thermal modeling-critical for traction and industrial drives where short-circuit survival and precise thermal management determine system lifetime.

Availability

ND350N16KHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, rail traction converters, renewable energy inverters, and medium-voltage UPS systems requiring stable component supply across multi-year production cycles.

Supply support for ND350N16KHPSA1 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 ND350N series of press-pack rectifier modules, engineered for high-current, high-voltage AC/DC conversion in harsh environments where long service life and thermal predictability are mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The datasheet specifies a maximum case operating temperature (Tc op) of +150°C, but continuous rated current IFAVM = 350 A is defined at TC = 100°C. Operation above 100°C requires derating per the TC = f(IFAVM) curve on page 6; at TC = 125°C, IFAVM drops to approximately 260 A under forced-air cooling.

Does ND350N16KHPSA1 support paralleling of multiple modules?

Yes-its matched forward voltage (vF max 1.28 V) and low slope resistance (rT = 0.4 mΩ) enable current sharing between paralleled modules when using symmetrical busbar layouts and individual gate drive compensation. Thermal coupling must be minimized via independent heatsink mounting to avoid thermal runaway.

Is isolation voltage tested per terminal pair or module-wide?

Isolation testing is performed module-wide: 3.6 kV RMS (1 sec) between all high-voltage terminals (Anodes/Cathodes) and the baseplate/heatsink interface. The 3.0 kV rating applies to 1-minute duration. This validates reinforced insulation between AC input and DC output sides in B6 configurations.

What heatsink types are validated for this module?

Semikron validates ND350N16KHPSA1 with KM17 heatsinks: natural convection version rated for 60 W (TA = 35°C), and forced-air version with Papst 4650 fan (TA = 45°C). RthCH ≤ 0.04 °C/W assumes flatness ≤ 30 µm and thermal interface material with κ ≥ 3.0 W/m·K applied at 0.1 mm thickness.