Infineon Technologies SIGC18T60UNX1SA2

Overview

SIGC18T60UNX1SA2 from Infineon Technologies is a high-speed 600 V, 20 A NPT (Non-Punch-Through) IGBT bare die optimized for hard-switching power conversion. It features 2.8–3.15 V V_CE(sat) at 20 A/15 V_GE, 100 µm chip thickness, 4.3 × 4.3 mm² die area, and short-circuit ruggedness-enabling use in welding inverters, PFC stages, and UPS output stages.

For engineers reviewing the SIGC18T60UNX1SA2 datasheet, SIGC18T60UNX1SA2 pinout, SIGC18T60UNX1SA2 application, or SIGC18T60UNX1SA2 equivalent, key selection criteria include V_CE(sat) vs. switching loss trade-off, gate charge (C_iss = 1100 pF, C_rss = 64 pF), thermal resistance of die-bonded assembly, and gate drive voltage tolerance (±20 V).

Technical Context

This NPT-technology IGBT die uses a positive temperature coefficient for V_CE(sat), enabling stable parallel operation without current-sharing resistors. Its 100 µm thickness and photoimide passivation support high reliability under repetitive short-circuit stress up to 10 µs at T_j = 150 °C.

Dynamic performance is characterized with R_G = 2.2 Ω: t_d(off) = 65 ns and t_f = 35 ns at V_CC = 400 V, I_C = 20 A, confirming suitability for 20–50 kHz switching in industrial SMPS and motor drives where E_off minimization is critical.

Key Specifications

Pinout & Package

Package: Bare die (unmounted silicon chip), sawn on foil, 4.3 × 4.3 mm² active area, 100 µm thickness, photoimide passivation, Al–Si 1% emitter metallization, Ni–Ag collector metallization. Not supplied in leaded or molded package.

Key Features

Applications

Availability

SIGC18T60UNX1SA2 is available at Aetrix Electronics and suitable for welding inverters, active PFC modules, and UPS output stages requiring stable component supply and traceable bare-die sourcing.

Supply support for SIGC18T60UNX1SA2 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 is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy applications.

SIGC18T60UNX1SA2 belongs to Infineon's high-speed NPT IGBT die portfolio, designed specifically for industrial power conversion systems demanding low E_off, short-circuit ruggedness, and reliable paralleling capability.

FAQ

What is the recommended gate resistor value for SIGC18T60UNX1SA2 in a 25 kHz PFC application?

A 2.2 Ω gate resistor is validated per datasheet test conditions (t_d(off) = 65 ns, t_f = 35 ns at V_CC = 400 V, I_C = 20 A). For 25 kHz PFC, this value balances switching loss and EMI; values below 1.5 Ω increase dv/dt stress and risk shoot-through, while above 3.3 Ω raises E_off by >22%.

Can SIGC18T60UNX1SA2 be die-bonded using conductive epoxy instead of solder?

Yes - the Ni–Ag collector metallization is qualified for both epoxy and soft-solder die bonding per datasheet specification. Conductive epoxy must meet 10⁻⁴ Ω·cm bulk resistivity and ≤150 °C cure profile to avoid degradation of photoimide passivation or Al emitter metallization.

Is the 100 µm thickness related to short-circuit capability?

Yes - the 100 µm NPT die thickness directly enables the 10 µs short-circuit withstand time at T_j = 150 °C by controlling carrier lifetime and electric field distribution. Thinner dies would reduce safe operating area; thicker dies increase V_CE(sat) and switching losses.

Does SIGC18T60UNX1SA2 require negative gate voltage for turn-off?

No - the device is rated for V_GE = 0 V turn-off and exhibits no tail current degradation at zero gate voltage. Negative gate bias (e.g., −5 V) is not required but may be used to improve noise immunity in high-dv/dt environments without affecting rated performance.