Toshiba Semiconductor and Storage TK650A60F,S4X

Overview

TK650A60F,S4X from Toshiba Electronic Devices & Storage Corporation is a silicon N-channel power MOSFET in the π-MOSⅣ family, designed for high-voltage switching in offline AC-DC converters and resonant topologies. It delivers 600 V V_DSS, 11 A continuous drain current (I_D), and low R_DS(ON) of 0.54 Ω (typ.) at V_GS = 10 V, enabling efficient operation in 50–100 W SMPS designs.

For engineers reviewing the TK650A60F,S4X datasheet, TK650A60F,S4X pinout, TK650A60F,S4X application, or TK650A60F,S4X equivalent, key selection criteria include avalanche ruggedness (E_AS = 224 mJ), MOSFET dv/dt immunity (≥15 V/ns), gate charge profile (Q_g = 34 nC), and TO-220SIS package thermal performance (R_th(ch-c) = 2.77 °C/W).

Technical Context

This device employs a planar vertical DMOS structure optimized for fast switching with controlled EMI generation. Its enhancement-mode threshold voltage (V_th = 2–4 V) ensures reliable turn-on with standard 10 V gate drivers while maintaining low static power loss. The integrated body diode supports synchronous rectification and flyback recovery in quasi-resonant converters.

Thermal design centers on channel-to-case conduction through the TO-220SIS insulated tab, enabling direct heatsink mounting without isolation pads. Dynamic characteristics-including C_iss = 1320 pF, C_oss = 47 pF, and t_on/t_off = 55/85 ns-support operation up to 100 kHz in hard-switched PFC stages and LLC half-bridge primary switches.

Key Specifications

Pinout & Package

TK650A60F,S4X is housed in a TO-220SIS (JEITA SC-67) package with electrically isolated metal tab rated for 2000 V_RMS. The plastic body provides creepage/clearance compliance for reinforced insulation in Class II systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP12N60DM6 and IPP60R065C7, TK650A60F,S4X uniquely combines TO-220SIS isolation, 224 mJ avalanche capability, and 15 V/ns dv/dt immunity-making it optimal for cost-sensitive, safety-critical industrial adapters where mechanical isolation and transient robustness are prioritized over minimal conduction loss.

Availability

TK650A60F,S4X is available at Aetrix Electronics and suitable for AC-DC adapters, industrial SMPS, LED drivers, and server PSUs requiring stable component supply across multi-year production cycles.

Supply support for TK650A60F,S4X 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 discrete semiconductors, power ICs, and storage solutions with emphasis on reliability, efficiency, and system integration.

The TK650A60F,S4X belongs to Toshiba's π-MOSⅣ high-voltage MOSFET product line, engineered specifically for energy-efficient switching power supplies in consumer, industrial, and lighting applications.

FAQ

What is the maximum continuous drain current for TK650A60F,S4X at 100 °C case temperature?

The TK650A60F,S4X supports 11 A DC drain current at T_c = 25 °C. At 100 °C case temperature, derating per the Safe Operating Area curve (Fig. 8.17) limits continuous I_D to approximately 6.2 A. This value is confirmed by the guaranteed maximum ID vs. Tc plot and must be applied in thermal design to maintain channel temperature ≤150 °C. Always verify with actual board-level thermal measurements for TK650A60F,S4X.

Does TK650A60F,S4X have a fully rated avalanche capability, and how is it tested?

Yes, TK650A60F,S4X is fully rated for single-pulse avalanche energy (E_AS) of 224 mJ under specified test conditions: V_DD = 90 V, T_ch = 25 °C (initial), L = 3.25 mH, and I_AS = 11 A. This rating is validated per JEDEC JESD24-11 and applies to transient inductive energy absorption during startup or fault events. The TK650A60F,S4X datasheet specifies this as a guaranteed parameter-not typical-ensuring design margin without additional testing.

Can TK650A60F,S4X be used with 5 V gate drive, and what is its minimum V_th?

TK650A60F,S4X has a guaranteed V_th range of 2–4 V at V_DS = 10 V and I_D = 1.16 mA, making it compatible with 5 V logic-level gate drivers. However, R_DS(ON) increases significantly below V_GS = 10 V-e.g., at V_GS = 5 V, R_DS(ON) rises to ~1.8 Ω (typ.). For reliable low-loss operation, TK650A60F,S4X should be driven with ≥10 V to achieve its specified 0.54 Ω conduction resistance.

What is the isolation voltage rating of the TO-220SIS package used in TK650A60F,S4X?

The TO-220SIS package of TK650A60F,S4X provides reinforced electrical isolation between the drain-connected metal tab and all internal terminals, rated at 2000 V_RMS. This meets IEC 60950-1 and IEC 62368-1 requirements for basic insulation in double-insulated power supplies. The isolation is verified per factory hipot testing and remains effective only when mounted with proper torque (0.6 N·m) and clean, flat heatsink surfaces. TK650A60F,S4X leverages this to simplify safety certification.

How does the body diode performance of TK650A60F,S4X compare to standard FRDs in flyback applications?

The intrinsic body diode of TK650A60F,S4X exhibits V_DSF = −1.7 V (max) at I_DR = 11 A and t_rr = 600 ns (typ.), with Q_rr = 3.8 µC. While slower and less efficient than dedicated fast-recovery diodes (FRDs), this diode is sufficient for DCM flyback operation where reverse recovery occurs at zero current. In such cases, TK650A60F,S4X eliminates external diode count and layout area-though for CCM operation, an external FRD remains recommended. TK650A60F,S4X body diode specs are fully characterized in Section 6.4.