Infineon Technologies SPI70N10L

Overview

SPI70N10L from Infineon Technologies is an N-channel logic-level SIPMOS™ power MOSFET rated for 100 V drain-source voltage, 70 A continuous drain current at T_C = 25 °C, and 16 mΩ maximum R_DS(on) at V_GS = 10 V. It features avalanche rating, 175 °C operating temperature, and P-TO262-3-1 package - used in high-current DC-DC converters, motor drive half-bridges, and industrial power switching stages.

For engineers reviewing the SPI70N10L datasheet, SPI70N10L pinout, SPI70N10L application, or SPI70N10L equivalent, key selection criteria include its 4.5 V logic-level gate drive compatibility, 700 mJ single-pulse avalanche energy, 3630 pF input capacitance, and thermal resistance of 0.6 K/W junction-to-case - critical for thermally constrained 100 V power stage designs.

Technical Context

This device operates in enhancement mode with a gate threshold voltage of 1.2–2.0 V and supports robust switching under high dv/dt conditions (6 kV/µs). Its integrated body diode exhibits 1.2–1.8 V forward voltage at 140 A and 100–150 ns reverse recovery time, enabling synchronous rectification and freewheeling in hard-switched topologies.

The MOSFET's transconductance (30–65 S) and gate charge profile (Q_g = 160–240 nC, Q_gd = 34–51 nC) are optimized for fast turn-on/turn-off with low gate drive loss, while its SOA curve supports DC, 10 ms, and 100 µs pulse operation up to 100 V and 70 A.

Key Specifications

Pinout & Package

Packaged in P-TO262-3-1 (also known as Super-220), this surface-mount variant uses a single-row 3-pin outline with isolated tab. The drain connects directly to the exposed metal tab for low-inductance, high-current thermal path to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP70NF10 and IRF540N, SPI70N10L delivers superior thermal performance via its P-TO262 package, higher avalanche robustness, and lower on-resistance - making it the preferred choice for high-reliability, high-current industrial switching where thermal density and fault tolerance are prioritized.

Availability

SPI70N10L is available at Aetrix Electronics and suitable for motor drives, industrial DC-DC converters, battery protection systems, and UPS inverter stages requiring stable component supply and long-term manufacturing continuity.

Supply support for SPI70N10L 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 management, automotive microcontrollers, and industrial sensors - with global R&D and wafer fabrication infrastructure.

SPI70N10L belongs to the SIPMOS™ logic-level power MOSFET product line, engineered for high-efficiency, high-reliability switching in industrial motor control, power supplies, and battery management systems.

FAQ

What is the maximum gate-source voltage rating for SPI70N10L?

The absolute maximum gate-source voltage is ±20 V. Exceeding this risks permanent gate oxide damage. For reliable operation, gate drive should be clamped between –5 V and +15 V, with recommended steady-state drive at 10 V for lowest R_DS(on) and 4.5 V for logic-level compatibility.

Does SPI70N10L require a gate resistor, and what value is typical?

Yes - a gate resistor controls dV/dt and ringing. Typical values range from 1.3 Ω (per datasheet switching characterization) to 10 Ω depending on drive strength and EMI targets. Lower values reduce switching time but increase gate driver stress; higher values dampen oscillation at the cost of slower edges.

Can SPI70N10L replace SPB70N10L or SPP70N10L in existing designs?

Yes - all three share identical electrical specs and die, differing only in package: SPI70N10L (P-TO262-3-1, SMD), SPB70N10L (P-TO263-3-2, D2PAK), and SPP70N10L (P-TO220-3-1, through-hole). Thermal and layout constraints determine interchangeability - P-TO262 offers best thermal performance among SMD variants.

Is the body diode suitable for synchronous rectification in a buck converter?

Yes - the body diode has 1.2–1.8 V forward voltage at 140 A and 100–150 ns reverse recovery time. While not optimized for ultra-high-frequency ZVS, it supports synchronous rectification up to ~100 kHz in 48 V input buck converters where gate timing and dead-time control are carefully managed.