Infineon Technologies D770N14TXPSA1

Overview

D770N14TXPSA1 from Infineon Technologies is a high-power, press-pack silicon rectifier diode designed for industrial AC/DC conversion in medium-voltage drive systems and traction inverters. It delivers 770 A average on-state current at TC = 100 °C, 1400 V repetitive peak reverse voltage (VRRM), and 7700 A surge current (IFSM) at 10 ms, operating up to 180 °C junction temperature in two-sided cooled configurations.

For engineers reviewing the D770N14TXPSA1 datasheet, D770N14TXPSA1 pinout, D770N14TXPSA1 application, or D770N14TXPSA1 equivalent, key selection criteria include thermal resistance (RthJC = 0.057 °C/W two-sided), forward voltage drop (vF = 1.76 V at 1.6 kA), and I²t rating (296.45 × 10³ A²s at Tvj = 25 °C), critical for short-circuit robustness in grid-connected converters.

Technical Context

This device is a single-die, pressure-contact, stud-mounted rectifier diode with symmetrical double-sided heat sinking capability. Its on-state characteristic follows a four-parameter logarithmic model (A=0.2182, B=5.198×10⁻⁴, C=0.1232, D=−4.824×10⁻³), enabling precise conduction loss modeling across 100–2000 A.

Thermal performance is defined by transient impedance ZthJC curves for anode-, cathode-, and two-sided cooling modes, with DC thermal resistance of 0.057 °C/W (two-sided) and dynamic rise ∆Zth dependent on conduction angle (e.g., +0.00901 °C/W for Θ = 180° rectangular current). Recovery charge Qr ranges from 25 µAs (25 A) to 10,000 µAs (800 A) under −di/dt stress up to 100 A/µs.

Key Specifications

Pinout & Package

Package: Press-pack, stud-mounted, double-sided cooling configuration with isolated anode and cathode terminals. Requires mechanical clamping force of 3.2–7.6 kN and provides 10 mm creepage distance. Weight: 75 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DD770N14K and SKKT770/14E, D770N14TXPSA1 offers superior thermal performance and documented soft recovery-making it optimal for high-efficiency, high-reliability 50/60 Hz rectification where junction temperature margin and fault energy absorption are design-critical.

Availability

D770N14TXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, traction inverters, medium-voltage UPS systems, and grid-tied solar inverters requiring stable component supply, long-life field reliability, and traceable sourcing for safety-critical deployments.

Supply support for D770N14TXPSA1 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 is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.

This device belongs to Infineon's IFBIP high-power rectifier diode product line, engineered for ruggedized, high-current AC/DC conversion in mission-critical infrastructure where thermal stability, surge robustness, and long service life are mandatory.

FAQ

What is the recommended clamping force for D770N14TXPSA1 installation?

The datasheet specifies a mechanical clamping force range of 3.2–7.6 kN for reliable pressure contact between the Si pellet and both heatsink surfaces. Applying force below 3.2 kN risks increased thermal resistance and hot-spot formation; exceeding 7.6 kN may damage internal metallization or ceramic isolation. Torque values depend on stud size and mounting hardware-refer to Infineon's mounting guide AP2002 for exact procedures.

Can D770N14TXPSA1 be paralleled for higher current capacity?

Yes, but only with strict matching and layout symmetry: devices must be from the same production lot, mounted on identical heatsinks with equal thermal path lengths, and fed via low-inductance, symmetrical busbars. The 0.54 mΩ slope resistance supports current sharing, but dynamic imbalance during transients requires gate-controlled balancing circuits or external ballasting resistors per leg in high-reliability applications.

Does D770N14TXPSA1 meet AEC-Q101 or other automotive qualifications?

No-D770N14TXPSA1 is not AEC-Q101 qualified. It is designed and tested for industrial and energy infrastructure use per IEC 60747-2 and Infineon's internal high-reliability standards. While its 180 °C junction rating exceeds typical automotive requirements, it lacks the extended temperature cycling, humidity, and vibration validation required for automotive powertrain applications.

What is the typical reverse recovery charge (Qr) at 400 A and −di/dt = 50 A/µs?

Per the Qr diagram on page 7 of the datasheet, at iFM = 400 A and −di/dt = 50 A/µs, Qr is approximately 1,850 µAs. This value is measured at Tvj = Tvj max, vR ≤ 0.5 VRRM, and vRM = 0.8 VRRM using an RC network (R = 8.2 Ω, C = 0.47 µF). Qr increases nonlinearly with current and decreases with higher −di/dt.