Vishay General Semiconductor - Diodes Division V30K170HM3/H

Overview

V30K170HM3/H from Vishay General Semiconductor is a high-current-density Trench MOS Barrier Schottky (TMBS®) rectifier in FlatPAK 5×6 package, rated for 170 V repetitive peak reverse voltage and 30 A average forward current, with ultra-low 0.53 V forward voltage at 5 A and 125 °C junction temperature-used in low-voltage, high-frequency DC/DC converters for efficiency-critical power stages.

For engineers reviewing the V30K170HM3/H datasheet, V30K170HM3/H pinout, V30K170HM3/H application, or V30K170HM3/H equivalent, key selection considerations include its AEC-Q101 qualification (HM3 suffix), 165 °C max junction temperature, 240 A surge rating, J-STD-020 MSL Level 1 compliance, and thermal resistance of 2.5 °C/W junction-to-mount under infinite heatsink conditions.

Technical Context

This device implements trench MOS Schottky technology to achieve lower forward voltage and higher current density than planar Schottky diodes. Its single-diode configuration supports unidirectional conduction in high-efficiency switching topologies, with optimized thermal path via copper-exposed cathode terminals in the FlatPAK 5×6 package.

Designed for operation up to 165 °C junction temperature, it delivers stable reverse leakage (<2 mA at 170 V, 125 °C) and low junction capacitance (1250 pF at 4.0 V, 1 MHz), enabling fast switching in synchronous rectification and freewheeling roles without significant capacitive loss or ringing.

Key Specifications

Pinout & Package

Package: FlatPAK 5×6 surface-mount package with exposed cathode thermal pad (pins 1–4 anode, pins 5–8 cathode); meets UL 94 V-0, halogen-free, RoHS-compliant, and JESD 201 Class 2 whisker resistant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with V30K170-M3/H and SS30170CT, the V30K170HM3/H uniquely combines AEC-Q101 qualification, FlatPAK thermal performance, and lowest V_F at elevated temperature-making it optimal for space-constrained, high-reliability automotive and industrial power supplies where thermal headroom and qualification compliance are non-negotiable.

Availability

V30K170HM3/H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial 48 V power supplies, and server VRM designs requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for V30K170HM3/H 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-performance diodes, MOSFETs, and optoelectronics with emphasis on reliability, thermal efficiency, and automotive-grade validation.

The TMBS® (Trench MOS Barrier Schottky) product line was engineered specifically to replace planar Schottky rectifiers in high-current, high-temperature power conversion-delivering lower V_F, higher surge capability, and superior thermal performance in compact surface-mount packages.

FAQ

What is the maximum junction temperature rating for the V30K170HM3/H?

The V30K170HM3/H has a maximum junction temperature (T_J) of +165 °C, verified per Vishay's qualification testing and documented in the 87145 datasheet. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings. The V30K170HM3/H maintains specified electrical parameters-including forward voltage and leakage current-up to this limit when thermal design adheres to recommended PCB copper area and mounting conditions.

Is the V30K170HM3/H pin-compatible with the V30K170-M3/H?

Yes, the V30K170HM3/H and V30K170-M3/H share identical FlatPAK 5×6 package dimensions, pinout, and terminal configuration-both have pins 1–4 as anode and pins 5–8 as cathode. The only functional difference is AEC-Q101 qualification, which does not affect mechanical or electrical compatibility. The V30K170HM3/H can be used as a drop-in replacement in existing designs requiring automotive qualification.

What does the "HM3" suffix indicate in V30K170HM3/H?

The "HM3" suffix in V30K170HM3/H denotes halogen-free, RoHS-compliant construction plus full AEC-Q101 qualification for automotive applications. Per Vishay documentation, HM3 parts undergo extended reliability stress testing-including high-temperature operating life, temperature cycling, and humidity bias-to meet automotive electronic component standards. The "/H" denotes 7-inch tape-and-reel packaging with 1500 units per reel.

What is the typical forward voltage of the V30K170HM3/H at 30 A and 125 °C?

The typical forward voltage of the V30K170HM3/H is 0.72 V at I_F = 30 A and T_J = 125 °C, as specified in the Primary Characteristics table of the Vishay datasheet (Document Number 87145). This value reflects real-world conduction loss under high-load, elevated-temperature conditions-critical for thermal modeling in high-power DC/DC converters where the V30K170HM3/H operates near its I_F(AV) rating.

Does the V30K170HM3/H require special PCB layout considerations for thermal management?

Yes-the V30K170HM3/H relies on its exposed cathode pad (pins 5–8) for primary heat dissipation. Vishay recommends a minimum 10 cm² copper area (2-oz copper, thermally connected to internal ground planes) beneath the device. Thermal vias under the cathode pad are strongly advised to enhance vertical conduction. Failure to implement adequate copper area results in excessive junction temperature rise beyond the 2.5 °C/W R_θJM spec, compromising reliability and derating margins for the V30K170HM3/H.