Vishay General Semiconductor - Diodes Division SMF8V0A-HE3-08

Overview

SMF8V0A-HE3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for robust transient voltage suppression in high-speed data lines. It features a standoff voltage of 8 V, maximum clamping voltage of 13.6 V at 14.7 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in USB 2.0, HDMI, and automotive infotainment interfaces.

For engineers reviewing the SMF8V0A-HE3-08 datasheet, SMF8V0A-HE3-08 pinout, SMF8V0A-HE3-08 application, or SMF8V0A-HE3-08 equivalent, this page delivers verified electrical parameters, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternative comparisons - all specific to the SMF8V0A-HE3-08 variant with HE3 environmental coding and 08 tape-and-reel packaging.

Technical Context

The SMF8V0A-HE3-08 operates as a single-channel unidirectional TVS diode optimized for low-capacitance signal-line protection. Its 706 pF typical capacitance at 0 V and 1 MHz enables use in 480 Mbps USB 2.0 paths without signal integrity degradation, while its 13.6 V clamping voltage ensures safe operation for 5 V–8 V logic rails during ESD events.

It employs silicon avalanche junction technology with low incremental surge resistance and fast response time (<1 ns), meeting IEC 61000-4-2 (±30 kV contact/air) and AEC-Q101 Class H3B (>8 kV HBM) requirements. The device is rated for continuous operation from –65 °C to +175 °C and supports wave/reflow soldering per J-STD-020 MSL level 1.

Key Specifications

Pinout & Package

The SMF8V0A-HE3-08 uses the DO-219AB (SMF) package: low-profile (1.08 mm max height), SOD-123W-compatible outline, molded in UL 94 V-0 compound, with cathode indicated by a bar marking on the top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with SMAJ8.0A and TPD2E001DRYR, the SMF8V0A-HE3-08 uniquely combines AEC-Q101 qualification, 706 pF capacitance optimized for USB 2.0, and DO-219AB compactness - making it the preferred choice for automotive and portable consumer designs requiring proven reliability and layout efficiency.

Availability

SMF8V0A-HE3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI channel safeguarding, and automotive infotainment signal-line ESD suppression requiring stable component supply across production lifecycles.

Supply support for SMF8V0A-HE3-08 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.

The SMF series targets high-speed signal-line ESD protection with AEC-Q101 qualification, low capacitance, and robust clamping - engineered specifically for USB, HDMI, and automotive sensor interfaces demanding long-term reliability and system-level compliance.

FAQ

What is the clamping voltage of the SMF8V0A-HE3-08 at its rated peak pulse current?

The SMF8V0A-HE3-08 has a maximum clamping voltage (VC) of 13.6 V at 14.7 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized transient conditions and ensures protected downstream ICs remain within safe voltage limits during ESD events. The SMF8V0A-HE3-08 achieves this performance using low-incremental-resistance silicon avalanche junction design.

Is the SMF8V0A-HE3-08 qualified for automotive applications?

Yes, the SMF8V0A-HE3-08 is AEC-Q101 qualified per Rev D, including human body model testing >8 kV (Class H3B), temperature cycling, and high-temperature operating life. Its –65 °C to +175 °C operating range and DO-219AB package construction meet automotive under-hood and infotainment module requirements. The SMF8V0A-HE3-08 carries the "H" in its part number to denote AEC-Q101 qualification.

What is the capacitance of the SMF8V0A-HE3-08 and how does it affect high-speed signal lines?

The SMF8V0A-HE3-08 has a typical capacitance of 706 pF at 0 V and 1 MHz. This value is optimized for USB 2.0 (480 Mbps) and analog audio paths where excessive capacitance would distort signal edges or attenuate high-frequency content. While higher than some specialized low-C arrays, it provides superior surge handling versus sub-100 pF alternatives - a deliberate trade-off validated in Vishay's SMF family design.

Does the SMF8V0A-HE3-08 have polarity markings, and how is it oriented on the PCB?

Yes, the SMF8V0A-HE3-08 features a cathode bar marking on its top surface, aligned with the cathode terminal. When mounted, the bar must face the system ground net; the anode connects to the protected signal line. The DO-219AB package orientation in tape follows standard SOD-123W conventions, with the cathode end toward the sprocket holes per Vishay's carrier tape specification (Doc. S8-V-3717.02-003). This ensures correct polarity during automated placement of the SMF8V0A-HE3-08.

What is the peak pulse power rating of the SMF8V0A-HE3-08 and under which waveform is it specified?

The SMF8V0A-HE3-08 is rated for 200 W peak pulse power with a 10/1000 μs waveform (per IEC 61000-4-5 Annex A) and 1000 W with an 8/20 μs waveform. These ratings reflect its ability to absorb transient energy without failure during lightning-induced surges or system-level EFT events. The 200 W rating is the primary figure used for ESD and most industrial surge specifications, and applies directly to the SMF8V0A-HE3-08 in standard PCB mounting conditions.