Infineon Technologies DD241S14KKHPSA1

Overview

DD241S14KKHPSA1 from eupec (Infineon Technologies) is a 1400 V, 240 A average forward current, dual common-cathode press-pack thyristor module designed for high-power phase-controlled rectification in industrial DC drives and HVDC converter valves. It features 0.15 °C/W junction-to-case thermal resistance per arm, 9300 A non-repetitive surge current, and 1.55 V max forward voltage at 800 A and T_vj = 150 °C.

For engineers reviewing the DD241S14KKHPSA1 datasheet, DD241S14KKHPSA1 pinout, DD241S14KKHPSA1 application, or DD241S14KKHPSA1 equivalent, key selection criteria include repetitive peak reverse voltage (V_RRM = 1400 V), RMS forward current rating (I_FRMSM = 410 A), transient thermal impedance profile, pressure-contact Si pellet construction, and common-cathode dual-arm topology for series-connected valve stacks.

Technical Context

This device is a dual-thyristor press-pack module with isolated silicon pellets mounted under mechanical pressure on an AlN ceramic base. Each arm operates as a separately controllable, high-current, line-commutated switch rated for 1400 V blocking and 240 A average conduction under forced cooling at T_c = 94 °C.

Its thermal design uses analytical Z_thJC transient models (seven RC network elements per arm) to support accurate loss-and-temperature simulation in multi-pulse, sinusoidal, and trapezoidal current waveforms typical of 6-/12-pulse rectifier bridges and grid-side converters.

Key Specifications

Pinout & Package

DD241S14KKHPSA1 is a press-pack dual-thyristor module with common-cathode configuration, housed in a metal-ceramic package using AlN isolation and spring-loaded pressure contacts. No soldered leads; terminals are M16 (anode) and M12 (cathode) threaded studs with specified tightening torques (M1: 16 Nm ±15%, M2: 12 Nm +5%/−10%).

Key Features

Applications

Equivalent & Alternatives

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

Compared with M56241S14K and 5STP 2414, DD241S14KKHPSA1 offers balanced trade-offs: mid-range current rating with proven field reliability in industrial drives, standardized M16/M12 terminal geometry, and comprehensive transient thermal modeling data for system-level simulation.

Availability

DD241S14KKHPSA1 is available at Aetrix Electronics and suitable for industrial DC drives, HVDC converter valves, medium-voltage UPS systems, and static VAR compensators requiring stable component supply across multi-year production programs.

Supply support for DD241S14KKHPSA1 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

eupec GmbH + Co. KG was a European power semiconductor specialist acquired by Infineon Technologies in 2000; its press-pack thyristor and diode modules remain industry benchmarks for high-reliability grid infrastructure.

This part belongs to the DD241S series of dual-thyristor press-pack modules engineered specifically for series-connected, water-cooled valve stacks in HVDC transmission and heavy-duty industrial rectification.

FAQ

What is the maximum allowable case temperature for continuous operation?

The datasheet specifies I_FAVM = 240 A at T_c = 94 °C and 261 A at T_c = 100 °C. Continuous operation must maintain case temperature ≤ 100 °C to avoid exceeding the 150 °C maximum junction temperature under worst-case conduction and switching losses. Derating curves are provided in Fig. 3 for non-sinusoidal loads.

Does DD241S14KKHPSA1 require forced cooling?

Yes. The 240 A average current rating assumes forced cooling with thermal resistance R_thCK ≤ 0.04 °C/W. Natural convection is insufficient; validated designs use water-cooled aluminum heatsinks with thermal interface material and calibrated clamping force to achieve the specified R_thJC + R_thCK = 0.19 °C/W per arm.

Can this module be used in common-anode configuration?

Yes. The datasheet explicitly states "DD 241 S can also be supplied with common anode or common cathode." DD241S14KKHPSA1 is the common-cathode variant; the common-anode version is designated DD241S14KAHPSA1 and shares identical voltage, current, and thermal ratings but reverses terminal polarity and gate reference.

What gate drive requirements does this thyristor impose?

It requires a minimum gate trigger current of 1.5 A and voltage of 10 V for reliable turn-on at T_vj = 150 °C. Recommended gate pulses are 20–50 µs wide with di/dt ≥ 2 A/µs. Isolation between gate terminals and main terminals must withstand ≥ 5 kV transient voltage to prevent false triggering in high-dv/dt valve environments.