Toshiba Semiconductor and Storage TW045Z120C,S1F

Overview

TW045Z120C,S1F from Toshiba Electronic Devices & Storage Corporation is a silicon carbide (SiC) N-channel power MOSFET designed for high-efficiency, high-voltage switching in industrial DC-DC converters and voltage regulators. It delivers 1200 V drain-source breakdown voltage, 45 mΩ typical R_DS(ON), integrated SiC Schottky body diode with −1.35 V forward voltage, and operates with gate threshold voltage of 3.0–5.0 V.

For engineers reviewing the TW045Z120C,S1F datasheet, TW045Z120C,S1F pinout, TW045Z120C,S1F application, or TW045Z120C,S1F equivalent, key selection criteria include its TO-247-4L(X) 4-pin package with dedicated source return pin, low switching losses (E_on = 368 µJ, E_off = 98 µJ at 800 V/20 A), and thermal robustness up to 175 °C channel temperature.

Technical Context

This third-generation SiC MOSFET integrates a monolithic SiC Schottky barrier diode to eliminate reverse recovery charge (Q_rr = 297 nC typ.) and enable zero-recovery switching in hard-commutated topologies. Its 45 mΩ R_DS(ON) at 18 V V_GS and 20 A ID supports high-power density designs while maintaining low conduction loss across temperature.

The device uses an enhancement-mode architecture with a high gate threshold (V_th = 3.0–5.0 V) to reduce susceptibility to spurious turn-on during fast dv/dt transients. Gate drive requires V_{GS_on} = 18 V and V_{GS_off} = 0 V, and its 4-pin TO-247-4L(X) layout separates source return (Pin 3) from main current path (Pin 2) to minimize gate loop inductance and improve switching stability.

Key Specifications

Pinout & Package

Package: TO-247-4L(X), also designated 2-16M3A by Toshiba; thermally optimized 4-lead through-hole package with isolated gate-source return path and heatsink-connected drain (Pin 1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SiC MOSFET switching applications.

Compared with STPSC45H12D and C3M0045120K, the TW045Z120C,S1F offers superior gate-loop inductance control via its dedicated Source 2 pin, lower reverse recovery charge, and wider V_th range-making it optimal for noise-sensitive, high-density power modules where reliability under fast transients is non-negotiable.

Availability

TW045Z120C,S1F is available at Aetrix Electronics and suitable for industrial DC-DC converters, server power supplies, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for TW045Z120C,S1F 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability power semiconductors, focusing on SiC, IGBTs, and MOSFETs for industrial, automotive, and infrastructure applications.

The TW045Z120C,S1F belongs to Toshiba's third-generation SiC power MOSFET product line, engineered specifically for high-efficiency, high-voltage switching in next-generation power conversion systems demanding low loss, high thermal resilience, and robust gate drive behavior.

FAQ

What is the maximum continuous drain current rating for the TW045Z120C,S1F at 100 °C case temperature?

The TW045Z120C,S1F supports 30 A DC drain current at T_c = 100 °C, as specified in its Absolute Maximum Ratings table. This rating reflects thermal derating from the 40 A limit at T_c = 25 °C and ensures safe operation under sustained high-power conditions when properly heatsinked. The device's 0.824 °C/W channel-to-case thermal resistance enables this current capability without exceeding the 175 °C maximum channel temperature.

Does the TW045Z120C,S1F require a negative gate voltage for reliable turn-off?

No, the TW045Z120C,S1F does not require negative gate voltage for turn-off. Its recommended gate drive is V_{GS_on} = +18 V and V_{GS_off} = 0 V. The device's enhancement-mode design and 3.0–5.0 V gate threshold voltage ensure clean, stable turn-off at 0 V gate bias, eliminating the need for complex negative-bias gate drivers commonly used with older SiC devices.

How does the integrated SiC Schottky diode in the TW045Z120C,S1F affect reverse conduction behavior?

The TW045Z120C,S1F integrates a monolithic SiC Schottky barrier diode with −1.35 V typical forward voltage (V_DSF) at 25 °C. This eliminates minority-carrier reverse recovery, resulting in near-zero Q_rr (297 nC typ.) and trr < 54 ns. During reverse conduction, the device behaves like a low-loss, fast-recovery diode-ideal for synchronous rectification and bidirectional switching without external diodes.

Can the TW045Z120C,S1F be used in parallel configurations?

Yes, the TW045Z120C,S1F supports paralleling due to its positive temperature coefficient of R_DS(ON), which promotes current sharing across multiple devices. However, careful attention must be paid to gate loop symmetry, source inductance matching, and thermal coupling. Its TO-247-4L(X) package-with separate gate return (Pin 3)-facilitates balanced gate drive layout, making it more suitable for paralleling than 3-pin alternatives.

What is the guaranteed maximum channel-to-case thermal resistance for the TW045Z120C,S1F?

The guaranteed maximum channel-to-case thermal resistance (R_th(ch-c)) for the TW045Z120C,S1F is 0.824 °C/W, per its Thermal Characteristics table. This value is measured under standardized mounting conditions and ensures predictable junction temperature rise under defined power dissipation-critical for thermal design validation in high-power applications such as PFC and DC-DC stages.