Infineon Technologies DD104N18KHPSA1

Overview

DD104N18KHPSA1 from Semikron is a press-pack dual-diode rectifier module rated for 1800 V repetitive peak reverse voltage (VRRM), 104 A average on-state current (IFAVM) at TC = 100°C, and 160 A RMS on-state current (IFRMSM), designed for high-power industrial AC/DC conversion in six-pulse bridge (B6) and two-pulse bridge (B2) configurations.

For engineers reviewing the DD104N18KHPSA1 datasheet, DD104N18KHPSA1 pinout, DD104N18KHPSA1 application, or DD104N18KHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.185 °C/W per module), surge current rating (2900 A, 10 ms), on-state voltage (1.4 V at 300 A, Tvj max), and pressure-contact Si pellet construction with AlN internal insulation.

Technical Context

This dual-diode module implements a single-phase, center-tapped or full-bridge rectification topology with independent anode-cathode arms. Each arm supports bidirectional blocking up to 1800 V and conducts continuous DC output current under forced or natural convection cooling.

Thermal performance is defined by transient junction-to-case impedance (ZthJC) with analytical R–τ network parameters, and case-to-heatsink resistance (RthCH ≤ 0.05 °C/W per module). The device operates across –40°C to +150°C case temperature range with maximum junction temperature of 150°C.

Key Specifications

Pinout & Package

DD104N18KHPSA1 is housed in a press-pack module with isolated copper baseplate and pressure-contact silicon die. Mechanical mounting uses M1 screws (4 Nm torque, ±15% tolerance) for thermal interface and M2 terminals (4 Nm, ±10%) for electrical connections. Creepage distance is 15 mm; weight is 160 g.

Key Features

Applications

Availability

DD104N18KHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, medium-voltage rectifiers, and renewable energy inverters requiring stable component supply, long lifecycle support, and traceable sourcing.

Supply support for DD104N18KHPSA1 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, with ISO/TS 16949 and IATF 16949 certification.

The DD-series press-pack diode modules are engineered for high-power AC/DC conversion in harsh environments, emphasizing thermal robustness, voltage scalability, and mechanical interoperability across voltage classes.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC op) is –40°C to +150°C. For rated 104 A average forward current (IFAVM), the device must be operated with case temperature maintained at or below 100°C, as specified in the thermal derating curves. Exceeding 100°C at this current level requires proportional reduction in IFAVM per the published TC = f(IFAVM) diagram.

Can DD104N18KHPSA1 be used in parallel configurations?

Yes, but only with active current-sharing measures such as matched gate drive timing, external ballasting resistors, or master-slave control loops. The module's 2.1 mΩ slope resistance and tight VTO (0.7 V) tolerance support inherent static sharing, but dynamic imbalance during transients requires careful layout and thermal coupling to ensure equal current division across paralleled units.

What heatsink types are validated for this module?

Semikron validates KM14 heatsinks: natural convection (KM14/50W) and forced-air (KM14/Papst 4650). With KM14/50W, the module achieves 104 A IFAVM at TA = 35°C; with Papst 4650, it sustains the same current at TA = 45°C. Thermal interface material must meet 0.05 °C/W RthCH target, and mounting torque must be strictly controlled at 4 Nm ±10%.

Is isolation voltage tested per arm or per module?

Isolation voltage (VISOL = 3.0 kV RMS, 1 sec, 50 Hz) is tested per module - i.e., between each isolated diode arm's semiconductor die and the baseplate. This confirms die-to-case isolation integrity for both arms independently, ensuring safe operation in grounded-baseplate configurations where either arm may be referenced to system ground.