STMicroelectronics STP45N10F7

Overview

STP45N10F7 from STMicroelectronics is an N-channel 100 V, 45 A Power MOSFET in TO-220 package, featuring 0.0145 Ω typ. R_DS(on), 25 nC total gate charge, and 190 mJ single-pulse avalanche energy. It delivers high-current switching for DC-DC converters, motor drives, and industrial power supplies where low conduction loss and robust transient handling are critical.

For engineers reviewing the STP45N10F7 datasheet, STP45N10F7 pinout, STP45N10F7 application, or STP45N10F7 equivalent, this device is selected for high-efficiency 100 V switching stages requiring stable R_DS(on) over temperature, fast turn-on/turn-off (15 ns t_d(on), 8 ns t_f), and proven avalanche ruggedness in unclamped inductive loads.

Technical Context

This MOSFET employs STripFET™ F7 trench-gate technology to achieve ultra-low on-resistance while minimizing Crss/Ciss ratio (25 pF / 1640 pF ≈ 0.015) for reduced EMI sensitivity. Its enhanced charge distribution enables efficient hard-switching at high frequencies without compromising safe operating area integrity.

The device operates with ±20 V gate drive, supports continuous drain current up to 45 A at T_C = 25 °C (32 A at 100 °C), and maintains stable V_GS(th) (2.5–4.5 V) and R_DS(on) across –55 to 175 °C junction temperature range-critical for automotive and industrial thermal cycling environments.

Key Specifications

Pinout & Package

STP45N10F7 uses TO-220 type A package (standard 3-lead through-hole) with isolated tab (drain-connected). The case is electrically connected to the drain terminal, requiring insulating mounting hardware when mounted to grounded heat sinks.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 100 V power MOSFET applications.

Compared with IRF540N, STP45N10F7 delivers 67% lower conduction loss and verified avalanche robustness; versus IXTH50N10L2, it trades 40% lower gate charge and TO-220 compatibility for slightly reduced E_AS, making it optimal for space-constrained, medium-power industrial switches.

Availability

STP45N10F7 is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and industrial power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for STP45N10F7 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.

STP45N10F7 belongs to the STripFET™ F7 power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in 100 V industrial power conversion and motor control applications.

FAQ

What is the maximum continuous drain current for STP45N10F7 at 100 °C case temperature?

The maximum continuous drain current is 32 A at T_C = 100 °C, as specified in Table 2 of the official datasheet (DocID024455 Rev 2). This derating from 45 A at 25 °C reflects thermal limitations of the TO-220 package's 2.5 °C/W junction-to-case resistance under sustained high-temperature operation.

Is the TO-220 tab electrically isolated from the leads?

No-the metal tab is internally connected to the drain terminal (Pin 3), as confirmed by Figure 1 (internal schematic) and package outline diagrams in Section 4.3. Electrical isolation from the heatsink is mandatory unless the heatsink is floating or drain-referenced.

Does STP45N10F7 have integrated gate protection diodes?

No-STP45N10F7 does not include internal gate-source or gate-drain protection diodes. External Zener clamping (e.g., 15 V TVS between gate and source) is required to prevent gate oxide damage from transients exceeding ±20 V absolute maximum rating.

Can STP45N10F7 replace STD45N10F7 in a DPAK-based PCB layout?

No-STP45N10F7 uses TO-220 packaging with 2.54 mm lead pitch and vertical mounting, while STD45N10F7 uses DPAK (TO-252) with surface-mount footprint and 2.28 mm lead pitch. Mechanical and thermal interfaces are incompatible; redesign of footprint, solder stencil, and heatsinking is required.