Renesas 2SK1154-E

Overview

2SK1154-E from Renesas Electronics is a silicon N-channel power MOSFET designed for high-speed switching in DC-DC converters and switching regulators. It features 500 V drain-to-source breakdown voltage, 3 A continuous drain current, 2.2 Ω typical R_DS(on) at V_GS = 10 V, 30 W channel dissipation, and TO-220AB package with isolated flange. Its low drive current requirement and absence of secondary breakdown support robust gate-driven power stage design.

For engineers reviewing the 2SK1154-E datasheet, 2SK1154-E pinout, 2SK1154-E application, or 2SK1154-E equivalent, key selection criteria include V_DSS rating margin for flyback/boost topologies, R_DS(on) vs. temperature stability, body diode reverse recovery time (t_rr = 300 ns), safe operating area (SOA) limits at pulse widths ≤10 µs, and thermal resistance (θ_ch–c = 4.17°C/W) for heatsink sizing in industrial power supplies.

Technical Context

This MOSFET operates as a unidirectional high-voltage switch in hard-switched topologies. Its gate threshold voltage (V_GS(off) = 2.0–3.0 V) enables TTL/CMOS-compatible drive, while low input capacitance (C_iss = 330 pF) and fast switching times (t_d(on) = 7 ns, t_f = 20 ns) reduce switching losses in 100–500 kHz power stages.

The integrated body diode exhibits V_DF = 0.9 V at I_F = 3 A and t_rr = 300 ns under di/dt = 100 A/µs - critical for synchronous rectification evaluation and freewheeling path loss estimation in non-isolated buck-derived converters.

Key Specifications

Pinout & Package

2SK1154-E uses the TO-220AB package (RENESAS code PRSS0004AC-A), featuring an electrically isolated metal flange for direct heatsinking and mechanical mounting. The flange is connected to the Drain terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP5NK50ZFP and IXTP50N10P, the 2SK1154-E offers flange isolation critical for grounded-heatsink layouts and a balanced R_DS(on)/t_rr trade-off optimized for 100–300 kHz industrial SMPS, whereas STP5NK50ZFP favors efficiency at cost of insulation complexity and IXTP50N10P is voltage-incompatible.

Availability

2SK1154-E is available at Aetrix Electronics and suitable for industrial switching power supplies, DC-DC boost converters, AC-DC adapters, and motor drive half-bridge legs requiring stable component supply and long-term production continuity.

Supply support for 2SK1154-E 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

Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and mixed-signal ICs for industrial, automotive, and infrastructure markets.

The 2SK1154-E belongs to Renesas' legacy silicon power MOSFET product line, engineered specifically for high-reliability, high-voltage switching regulator and DC-DC converter applications in industrial equipment.

FAQ

What is the maximum continuous drain current rating for the 2SK1154-E at 25°C case temperature?

The 2SK1154-E has a maximum continuous drain current (I_D) rating of 3 A at T_C = 25°C, as specified in the Absolute Maximum Ratings table. This value assumes proper heatsinking to maintain case temperature at or below 25°C; actual usable current must be derated per the Power vs. Temperature Derating curve on page 3 of the datasheet, where P_ch drops to zero at T_C = 150°C. The 2SK1154-E must not exceed this limit to avoid thermal runaway or permanent damage.

Does the 2SK1154-E have an electrically isolated flange, and how does that affect PCB layout?

Yes, the 2SK1154-E uses the TO-220AB package with an electrically isolated flange connected to the Drain terminal. This isolation allows direct mounting to a grounded heatsink without requiring an insulating pad, reducing thermal resistance by approximately 0.5°C/W compared to non-isolated variants. In PCB layout, the flange must not contact any copper pour or trace except those intentionally tied to the high-voltage Drain net; source and gate traces must maintain creepage/clearance distances appropriate for 500 V operation.

What is the typical gate charge (Q_g) of the 2SK1154-E, and why does it matter for gate driver selection?

At V_DS = 250 V, the 2SK1154-E exhibits a typical total gate charge (Q_g) of 20 nC, as shown in the Dynamic Input Characteristics graph on page 4 of the datasheet. This value directly determines the peak current required from the gate driver to achieve a desired turn-on time - for example, driving 20 nC in 50 ns demands ≥400 mA peak current. Underestimating Q_g leads to slow switching, increased E_sw, and potential thermal overstress in the 2SK1154-E during high-frequency operation.

Can the 2SK1154-E replace the 2SK1153-E in existing designs, and what are the key differences?

Yes, the 2SK1154-E is a direct voltage-rated upgrade of the 2SK1153-E, sharing identical pinout, package, and most electrical characteristics except V_DSS (500 V vs. 450 V) and V_(BR)DSS (500 V vs. 450 V). R_DS(on) is slightly higher (2.2 Ω vs. 2.0 Ω typ), and I_DSS is rated at 250 µA (V_DS = 400 V) versus 250 µA (V_DS = 360 V) for the 2SK1153-E. No PCB changes are required, and the 2SK1154-E improves surge tolerance in 400 V bus applications while maintaining full functional compatibility with the 2SK1153-E.

What is the safe operating area (SOA) limitation for the 2SK1154-E at 100 µs pulse width?

At 100 µs pulse width, the 2SK1154-E's Safe Operating Area (SOA) is limited by R_DS(on) conduction - meaning its maximum allowable V_DS decreases linearly with increasing I_D beyond the DC boundary. From the "Maximum Safe Operation Area" graph on page 3, at 100 µs, the upper limit intersects ~12 A at 40 V and ~3 A at 400 V. Exceeding this boundary risks localized thermal runaway or bond wire fusing. Designers must verify all transient conditions - including startup surges and short-circuit events - fall within this SOA contour for the specific pulse width used in their application.