Infineon Technologies DD46S10KHPSA1

Overview

DD46S10KHPSA1 from Eupec (now Infineon Technologies) is a 800–1200 V, 100 A RMS dual common-cathode silicon rectifier diode module in a press-pack package with soldered Si-pellet contact and Al₂O₃ internal insulation. It delivers 45 A mean forward current at 85°C case temperature and supports surge currents up to 1000 A (10 ms, Tj = 25°C), suited for high-power industrial AC/DC conversion in medium-voltage drives.

For engineers reviewing the DD46S10KHPSA1 datasheet, DD46S10KHPSA1 pinout, DD46S10KHPSA1 application, or DD46S10KHPSA1 equivalent, key selection factors include its 0.32 °C/W junction-to-case thermal resistance per module, 1.60 V max forward voltage at 150 A/125°C, 20 mA max reverse leakage at VRRM/125°C, and 5000 A²s I²t rating - critical for short-circuit robustness in traction and grid-tied inverters.

Technical Context

This dual-arm press-pack diode module uses two series-connected silicon rectifier chips per arm in a common-cathode configuration. Each arm operates with a maximum junction temperature of 125°C and exhibits a forward slope resistance of 3.90 mΩ and threshold voltage of 0.90 V at Tj max, enabling predictable conduction loss modeling under DC and 50 Hz sinusoidal loads.

Thermal performance is defined by transient ZthJC curves and analytical RC network parameters (e.g., Rthn = 0.0494 °C/W, τn = 0.2405 s for n=2), supporting accurate thermal simulation in forced-air or liquid-cooled heat sink designs. Its 2.5 kV isolation test voltage ensures safe operation in grounded-neutral medium-voltage systems.

Key Specifications

Pinout & Package

DD46S10KHPSA1 is housed in a press-pack (non-hermetic, bolt-down) package with soldered Si-pellet contact and Al₂O₃ ceramic isolation. The module features two anode terminals (A1, A2), one common cathode terminal (K), and an electrically isolated copper baseplate serving as mechanical and thermal interface. Mounting torque: M1 = 4 Nm ±15% (mechanical), M2 = 4 Nm (+5%/−10%) (electrical).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, press-pack rectifier diode applications.

Compared with DD46S12KHPSA1, this part offers lower voltage margin but identical thermal behavior and cost structure; versus FZ1200R12KP4, it provides higher reliability and lower conduction loss in pure rectification roles, but lacks switching capability - making it optimal for fixed-speed, high-duty-cycle industrial rectifiers.

Availability

DD46S10KHPSA1 is available at Aetrix Electronics and suitable for industrial medium-voltage rectifiers, traction converter input stages, and grid-tied solar inverter front-ends requiring stable component supply, long-lifecycle assurance, and traceable sourcing for Class A equipment certification.

Supply support for DD46S10KHPSA1 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

Infineon Technologies AG (formerly Eupec GmbH) is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.

This part belongs to the Eupec DD46S press-pack diode family, engineered for high-reliability, high-current rectification in mission-critical medium-voltage power conversion systems where thermal stability and surge robustness are paramount.

FAQ

What is the recommended heatsink interface material for DD46S10KHPSA1?

Use thermally conductive, electrically insulating materials rated for ≥2.5 kV dielectric strength and continuous operation up to 130°C, such as Bergquist Sil-Pad 2000 or Parker Chomerics Thermasil 300. Interface thickness must be ≤0.2 mm to maintain RthCK ≤0.08 °C/W per module. Avoid silicone-based greases that may migrate and degrade insulation over time.

Can DD46S10KHPSA1 be used in parallel configurations?

Yes, but only with matched modules from the same production lot and strict current-sharing design: identical busbar lengths, symmetrical mounting pressure (±5% torque control), and forced liquid cooling to limit ΔTj between arms to <5°C. Parallel operation beyond two modules requires external current-balancing reactors per arm.

Does DD46S10KHPSA1 require gate drive or snubber circuits?

No - it is a passive rectifier diode module with no gate terminal. Snubbers are not required for 50/60 Hz line-frequency operation, but RC snubbers (100 Ω + 0.1 µF) are recommended across each anode–cathode pair when used in high-di/dt environments like thyristor-commutated inverters to suppress voltage overshoot during turn-off of companion SCRs.

What is the maximum allowable mounting torque for electrical terminals?

The specified torque for electrical terminal connections (M2) is 4 Nm, with a tolerance of +5% / −10%, i.e., 3.6–4.2 Nm. Exceeding 4.2 Nm risks thread stripping or deformation of the silver-plated copper terminal, increasing contact resistance and localized heating. Use a calibrated torque wrench and verify post-assembly resistance <50 µΩ per joint.