STMicroelectronics SPV1002D40TR

Overview

SPV1002D40TR from STMicroelectronics is a smart bypass switch for photovoltaic panel strings, replacing conventional Schottky diodes with active MOSFET-based regulation. 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 SPV1002D40TR datasheet, SPV1002D40TR pinout, SPV1002D40TR application, or SPV1002D40TR equivalent, key selection criteria include its ultra-low VF,AVG under high IF, thermal robustness in D²PAK packaging, gate charge recycling architecture, and verified performance in shaded-cell bypass scenarios per IEC 61215.

Technical Context

The SPV1002D40TR implements an autonomous self-gated power MOSFET topology: during OFF time, an internal capacitor charges from source-drain voltage; during ON time, the stored charge drives the gate to achieve low RDS(on) conduction. 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 = 60 mV during TON (8 A, 25°C), rising to 850 mV during TOFF-yielding a net VF,AVG of 110 mV at 8 A/25°C and 180 mV at 16 A/25°C. Thermal resistance is 1.6 °C/W (junction-to-case, D²PAK), validated for FR4 PCBs with copper area optimization per Figure 5.

Key Specifications

Pinout & Package

SPV1002D40TR uses the D²PAK (TO-263) surface-mount package: 3-pin, single-ended power device with exposed thermal pad (pin 2) for PCB heat transfer. Dimensions conform to Table 5 (Doc ID 018839 Rev 3): D = 8.95–9.35 mm, E = 10–10.40 mm, e = 2.54 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16EWH04-M3 and IPP040N04L, the SPV1002D40TR delivers lowest system-level thermal load, highest integration (no external components), and guaranteed hot-spot mitigation without firmware or timing calibration-making it optimal for certified, maintenance-free PV deployments.

Availability

SPV1002D40TR is available at Aetrix Electronics and suitable for residential solar installations, commercial rooftop PV farms, and off-grid telecom power systems requiring stable component supply, long-lifecycle assurance, and compliance with IEC 61215 and UL 1703.

Supply support for SPV1002D40TR 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, designing and manufacturing silicon solutions for automotive, industrial, and power applications since 1987.

The SPV1002 belongs to ST's Photovoltaic Smart Power Switch family-engineered specifically to replace passive bypass diodes with intelligent, self-contained alternatives that reduce thermal stress and improve energy harvest in real-world shading conditions.

FAQ

What is the thermal derating curve for SPV1002D40TR at elevated ambient temperatures?

The SPV1002D40TR maintains full 16 A rating up to 75°C ambient when mounted on a 7 cm² copper pour (2 oz Cu, FR4). Above 75°C, current must be linearly reduced to 12 A at 100°C and 8 A at 125°C ambient, based on RthJC = 1.6 °C/W and maximum TJ = 175°C. Derating data is plotted in Figure 4 of Doc ID 018839 Rev 3.

Can SPV1002D40TR be used in parallel for higher current handling?

No-SPV1002D40TR is not designed for paralleling. Its autonomous gate drive relies on individual source-drain voltage sensing; paralleling causes unequal current sharing and thermal runaway. For >16 A applications, use multiple independent SPV1002D40TR units across separate cell substrings, as validated in ST's AN4125 application note.

Does SPV1002D40TR require any external components for basic operation?

No external components are required. The device integrates all necessary charge-pump circuitry, timing logic, and gate drive within the D²PAK package. Only PCB copper area for thermal management (minimum 5 cm²) and proper source/drain trace width (≥3 mm) are needed per layout guidelines in Section 4 of the datasheet.

How does SPV1002D40TR respond during rapid shading transitions, such as passing clouds?

SPV1002D40TR responds within <500 ns to reverse bias onset, initiating conduction before cell reverse voltage exceeds 40 V. Its gate charge recycling architecture ensures consistent TON/T ratio across transient events, preventing oscillation or latch-up. Response behavior is characterized in Figure 3 (reverse current vs. time) and validated per IEC 61215-2 MQT 11.12.