Vishay General Semiconductor - Diodes Division V20K170-M3/H

Overview

V20K170-M3/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 reverse voltage and 20 A average forward current, with ultra-low 0.57 V forward voltage at 5 A and 125 °C junction temperature - deployed in DC/DC converter freewheeling paths and polarity protection circuits.

For engineers reviewing the V20K170-M3/H datasheet, V20K170-M3/H pinout, V20K170-M3/H application, or V20K170-M3/H equivalent, key selection criteria include its 220 A surge rating, AEC-Q101-qualified variant availability (HM3 suffix), J-STD-020 MSL Level 1 compliance, 165 °C max junction temperature, and thermal resistance of 2.5 °C/W junction-to-mount under infinite heatsink conditions.

Technical Context

This device uses trench MOS Schottky architecture to achieve low VF and high efficiency without minority-carrier storage delay, enabling operation up to high switching frequencies in synchronous rectification and flyback topologies. Its single-diode configuration and planar metal termination support robust solderability and reliability under thermal cycling.

The FlatPAK 5×6 package integrates four anode terminals (pins 1–4) and four cathode terminals (pins 5–8) for low-inductance, high-current conduction paths and enhanced thermal dissipation via the exposed copper die pad. Thermal resistance RθJM = 2.5 °C/W confirms optimized heat transfer to the PCB mount surface.

Key Specifications

Pinout & Package

Package: FlatPAK 5×6 - surface-mount, thermally enhanced, halogen-free, RoHS-compliant package with exposed copper die pad for low thermal resistance and high current handling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with V20K170-M3/H, the V20K170HM3_A/H offers identical performance with added automotive qualification, while SS20170CT trades superior thermal performance and surface-mount reliability for through-hole compatibility and dual-diode integration - neither is pin-compatible, but both serve overlapping low-voltage, high-current rectification roles.

Availability

V20K170-M3/H is available at Aetrix Electronics and suitable for server VRM freewheeling, automotive body control modules, and industrial PLC power inputs requiring stable component supply, halogen-free compliance, and J-STD-020 MSL Level 1 reflow readiness.

Supply support for V20K170-M3/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-reliability diodes, MOSFETs, and optoelectronics for industrial, automotive, and computing applications.

The V20K170-M3/H belongs to Vishay's TMBS® Trench MOS Barrier Schottky family, engineered specifically for high-efficiency, high-current DC/DC conversion where low VF and thermal robustness are critical.

FAQ

What is the maximum junction temperature rating for the V20K170-M3/H?

The V20K170-M3/H has a maximum junction temperature (TJ max.) of +165 °C, verified per datasheet Document Number 87153. This rating allows reliable operation in high-ambient environments such as automotive under-hood locations or sealed industrial enclosures. Derating curves in Figure 1 confirm usable current capacity down to -40 °C ambient, and thermal design must respect RθJM = 2.5 °C/W under infinite heatsink conditions. The V20K170-M3/H achieves this rating using trench MOS Schottky architecture with optimized metallization and package thermal path.

Is the V20K170-M3/H RoHS-compliant and halogen-free?

Yes, the V20K170-M3/H is halogen-free and RoHS-compliant, as confirmed in the "MECHANICAL DATA" section of the Vishay datasheet (Document No. 87153). The "M3" suffix explicitly denotes compliance, and the molding compound meets UL 94 V-0 flammability requirements. Lead finish is matte tin, qualified per J-STD-002 and JESD 22-B102, and whisker resistance meets JESD 201 Class 2. The V20K170-M3/H is suitable for environmentally regulated markets including EU, China, and Japan.

Does the V20K170-M3/H have AEC-Q101 qualification?

The base V20K170-M3/H is not AEC-Q101 qualified; however, the automotive-grade variant V20K170HM3_A/H is fully AEC-Q101 qualified, as stated in the "FEATURES" section of the datasheet. The HM3 suffix and "_A" revision code identify this qualified version, which shares identical electrical specifications but adds stress-test validation for automotive powertrain and body electronics. For non-automotive industrial or computing use, the V20K170-M3/H remains appropriate and cost-optimized.

What is the forward voltage of the V20K170-M3/H at 20 A and 125 °C?

The V20K170-M3/H exhibits a forward voltage (VF) of 0.72 V at IF = 20 A and TJ = 125 °C, per the "PRIMARY CHARACTERISTICS" table in datasheet 87153. This value is measured under pulsed conditions (≤5 ms) and reflects real-world performance in high-temperature, high-current operation. At lower currents - e.g., 5 A and 125 °C - VF drops to 0.57 V, confirming the device's ultra-low conduction loss advantage. These values are critical for calculating power loss (P = VF × IF) in thermal modeling of DC/DC converters.

What packaging format is used for the V20K170-M3/H?

The V20K170-M3/H is supplied in 7-inch diameter plastic tape and reel format, with a base quantity of 1500 units per reel, as specified in the "ORDERING INFORMATION" table of datasheet 87153. The "/H" suffix denotes this delivery mode. The FlatPAK 5×6 package itself features an exposed copper die pad for thermal management and eight terminals (four anode, four cathode) arranged for symmetric current distribution. This packaging supports high-speed automated pick-and-place assembly and is compatible with standard SMT reflow profiles.