STMicroelectronics VN330SPTR-E

Overview

VN330SPTR-E from STMicroelectronics is a quad-channel high-side smart power solid-state relay in PowerSO-10 package, designed to drive resistive or inductive loads with ground-referenced return paths. It delivers 0.7 A per channel, features built-in current limiting (ILIM = 0.7–2.5 A), thermal shutdown (TTSD = 150–170 °C), and open-drain diagnostic output for overtemperature detection - used in industrial PLC I/O modules requiring robust load control and fault reporting.

For engineers reviewing the VN330SPTR-E datasheet, VN330SPTR-E pinout, VN330SPTR-E application, or VN330SPTR-E equivalent, key selection criteria include channel count, high-side switching capability, integrated diagnostics, short-circuit protection response time (tSC = 100 µs), and compatibility with 10–36 V supply rails in harsh industrial environments.

Technical Context

The VN330SPTR-E integrates four independent VIPower high-side switches with active current limiting, undervoltage lockout (VUSD = 5–8 V), and fast demagnetization (Vdemag = VCC−65 to VCC−45 V). Each channel operates with logic-compatible inputs (VIH = 3.5 V, VIL = 2 V) and internal input clamping at ≥32 V.

Protection logic combines thermal sensing (TR = 135–155 °C reset), overtemperature flagging via DIAG pin (VDIAG low = 1 V under fault), and short-circuit current regulation (IOVPK = 4 A peak). Switching performance includes td(ON) = 30–60 µs and tf = 8–20 µs across −40 to 125 °C junction temperature range.

Key Specifications

Pinout & Package

Package: PowerSO-10 (exposed die pad, thermally enhanced surface-mount). Dimensions per DS4361 Rev 5: D = 9.4–9.6 mm, E = 13.85–14.35 mm, A2 = 3.4–3.6 mm height, Rth(JC) = 2 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side smart power switch applications.

Compared with VN330SPTR-E, IPS2050H offers higher per-channel current but sacrifices integration and diagnostics, while TPS27082L provides quad packaging at lower voltage/current ratings and reduced protection scope - making VN330SPTR-E the only option meeting IEC 61131-2 for industrial PLC outputs with full fault visibility.

Availability

VN330SPTR-E is available at Aetrix Electronics and suitable for programmable logic control, industrial PC peripheral I/O, and numerical control machines requiring stable component supply with long-term industrial lifecycle support.

Supply support for VN330SPTR-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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing capabilities.

VN330SPTR-E belongs to ST's VIPower M0-7 family of high-side smart power switches, engineered specifically for industrial automation systems demanding high reliability, integrated protection, and simplified board-level design.

FAQ

What is the maximum continuous output current per channel?

The VN330SPTR-E supports 0.7 A continuous output current per channel at TJ ≤ 125 °C with adequate PCB copper area (four-layer FR-4, min pad size per DS4361). At elevated temperatures, R_DS(on) increases to 0.44 Ω, raising conduction loss - thermal design must maintain junction temperature below 125 °C for rated current.

How does the DIAG pin indicate different fault conditions?

The DIAG pin asserts low (≤1 V) for overtemperature, undervoltage (VCC < 5 V), or short-circuit events. The truth table in DS4361 Rev 5 shows identical low-state behavior across all three faults; differentiation requires correlating DIAG assertion timing with system voltage monitoring and thermal history - no encoded multi-bit fault signaling is provided.

Can the VN330SPTR-E drive inductive loads without external flyback diodes?

Yes - its fast demagnetization feature generates Vdemag = VCC−65 V minimum at turn-off, safely dissipating stored inductive energy internally. This eliminates mandatory external flyback diodes for typical 24 V solenoids and relays (LLOAD ≥ 1 mH), though external suppression may still be used for EMI reduction in sensitive environments.

What is the recommended PCB layout for thermal performance?

Mount the PowerSO-10 package on a four-layer FR-4 board with ≥200 mm² exposed copper connected to GND under the exposed die pad, using ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch). This achieves Rth(JA) ≈ 50 °C/W as specified - insufficient copper area raises junction temperature and triggers thermal shutdown prematurely at full load.