STMicroelectronics SPV1002D40

Overview

SPV1002D40 from STMicroelectronics is a smart bypass switch for photovoltaic panel strings, replacing Schottky diodes with active MOSFET-based rectification. It delivers 16 A forward current, 40 V reverse voltage rating, <180 mV average forward voltage drop at 16 A/25°C, <1 µA reverse leakage at 40 V/25°C, and operates up to 175 °C junction temperature-enabling cooler, more efficient hot-spot protection in solar modules.

For engineers reviewing the SPV1002D40 datasheet, SPV1002D40 pinout, SPV1002D40 application, or SPV1002D40 equivalent, this device offers verified low-loss bypass functionality with documented thermal performance, gate charge recycling architecture, and D²PAK package compatibility for high-reliability PV string integration.

Technical Context

The SPV1002D40 implements an autonomous self-driven gate control scheme: during OFF time, an internal capacitor charges from source-drain voltage; during ON time, the stored charge drives the MOSFET gate to minimize conduction loss. This eliminates external gate drive circuitry while maintaining precise TON/T ratio control (95% at 25°C, 75% at 125°C).

Its electrical behavior is defined by dynamic forward voltage partitioning: VF,AVG = 60 mV (TON) + 850 mV (TOFF) at 8 A/25°C, yielding net 180 mV average drop at full 16 A. Reverse blocking is ensured by <10 µA leakage at 40 V/125°C and 8 kV HBM ESD robustness.

Key Specifications

Pinout & Package

The SPV1002D40 is housed in a surface-mount D²PAK (TO-263) package with exposed drain pad for thermal dissipation and mechanical anchoring. Pin assignment is validated per ST's official mechanical drawing (Doc ID 018839 Rev 3, Fig.7): three terminals only, no gate access - fully integrated control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar photovoltaic bypass applications.

Compared with VS-16EWH04FN-M3 and IPP040N04L, the SPV1002D40 delivers 65% lower conduction loss, 120× lower reverse leakage at 125°C, and zero external component count - making it the only drop-in, self-contained solution for high-efficiency, maintenance-free PV bypass.

Availability

SPV1002D40 is available at Aetrix Electronics and suitable for residential solar installations, commercial carport arrays, and utility-scale ground-mount farms requiring stable component supply, long-term PV module warranty alignment, and RoHS-compliant D²PAK packaging.

Supply support for SPV1002D40 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and energy applications.

The SPV1002 belongs to ST's photovoltaic protection product line, engineered specifically to replace legacy Schottky diodes with intelligent, thermally robust bypass switches that improve energy harvest and extend module lifetime.

FAQ

What is the thermal resistance (RthJC) of the SPV1002D40 in its D²PAK package?

The SPV1002D40 has a measured junction-to-case thermal resistance of 1.6 °C/W when mounted on a PCB with adequate copper area under the exposed drain tab, as confirmed in Figure 5 of the official datasheet (Doc ID 018839 Rev 3). This value assumes FR4 board with 35 µm Cu and correlates directly with copper surface area - no thermal interface material is required.

Does the SPV1002D40 require external gate drive components or control signals?

No. The SPV1002D40 integrates a self-charging gate driver circuit that uses energy harvested from the source-drain voltage during OFF time to power the gate during ON time. There are no external pins for gate control, no timing inputs, and no supporting components required - it operates autonomously as a two-terminal device.

How does the SPV1002D40 compare to a standard Schottky diode in reverse leakage performance?

At 40 V reverse bias and 125°C, the SPV1002D40 exhibits ≤10 µA reverse leakage current, whereas typical 16 A Schottky diodes (e.g., VS-16EWH04FN-M3) show ≥120 µA under identical conditions. This 12× lower leakage significantly reduces parasitic power loss and mitigates thermal runaway risk in high-temperature, partially shaded PV operation.

Can the SPV1002D40 be used in place of TO-220 variants like SPV1002T40 without layout changes?

No. The SPV1002D40 uses a surface-mount D²PAK (TO-263) footprint with center-tab thermal pad, while SPV1002T40 uses through-hole TO-220 with different pin spacing and mounting mechanics. PCB land patterns, thermal vias, and mechanical retention must be redesigned - they are not footprint-compatible despite identical electrical specs.