Vishay General Semiconductor - Diodes Division SMB10J13AHE3_A/H

Overview

SMB10J13AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 13 V standoff voltage (V_WM), 14.4–15.9 V breakdown range (V_BR), and 1000 W peak pulse power (10/1000 µs). It clamps transients to ≤21.5 V at 46.5 A peak current and is AEC-Q101 qualified for automotive electronics.

For engineers reviewing the SMB10J13AHE3_A/H datasheet, SMB10J13AHE3_A/H pinout, SMB10J13AHE3_A/H application, or SMB10J13AHE3_A/H equivalent, key selection criteria include clamping voltage under rated surge current, unidirectional polarity for DC rail protection, AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.

Technical Context

This TVS diode operates as a voltage-clamping overvoltage protection device across DC power rails or signal lines, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream components. Its glass-passivated junction ensures stable electrical characteristics and long-term reliability under repetitive surge stress.

Designed for automotive-grade deployment, SMB10J13AHE3_A/H meets JESD201 Class 2 whisker resistance, MSL Level 1 (260 °C reflow), and UL 94 V-0 flammability requirements. The matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, low-profile plastic case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm per terminal.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with SMBJ13A-E3/52, SMB10J13AHE3_A/H adds AEC-Q101 qualification and whisker-resistant plating; compared with 1.5SMC13A, it offers identical protection performance in a 40 % smaller footprint, enabling compact automotive module designs.

Availability

SMB10J13AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power port protection requiring stable component supply, AEC-Q101 compliance, and high-power transient suppression.

Supply support for SMB10J13AHE3_A/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.

The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy, high-reliability transient suppression in automotive and industrial power systems where AEC-Q101 validation and tight parametric control are mandatory.

FAQ

What is the clamping voltage of SMB10J13AHE3_A/H at its rated peak pulse current?

The SMB10J13AHE3_A/H has a maximum clamping voltage (V_C) of 21.5 V when subjected to its rated peak pulse current (I_PPM) of 46.5 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components experience no more than 21.5 V during full-rated surge events. The SMB10J13AHE3_A/H datasheet specifies this as a hard maximum under defined test conditions.

Is SMB10J13AHE3_A/H suitable for automotive applications?

Yes, SMB10J13AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3" indicating RoHS-compliant and AEC-Q101 qualified construction. It passes stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), making it appropriate for under-hood and cabin electronics. The SMB10J13AHE3_A/H meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility.

What is the standoff voltage (V_WM) and why does it matter for SMB10J13AHE3_A/H?

The standoff voltage (V_WM) of SMB10J13AHE3_A/H is 13 V - the maximum DC or RMS voltage the device can withstand continuously without entering avalanche conduction. This parameter ensures reliable blocking during normal operation while allowing rapid clamping when transients exceed V_BR. For SMB10J13AHE3_A/H, V_WM = 13 V aligns with common 12 V automotive systems, providing sufficient margin above nominal rail voltage while avoiding false triggering.

How does the SMB10J13AHE3_A/H package compare to standard SMB diodes in terms of thermal performance?

The SMB10J13AHE3_A/H uses the standard SMB (DO-214AA) package with typical junction-to-ambient thermal resistance (R_θJA) of 72 °C/W on 0.2" × 0.2" copper pads. Its junction-to-lead resistance (R_θJL) is 20 °C/W, enabling efficient heat transfer to PCB copper. Unlike smaller SOD-123 packages, the SMB footprint supports higher surge energy dissipation, and the glass-passivated chip ensures consistent thermal behavior across temperature extremes. This makes SMB10J13AHE3_A/H thermally robust for repeated surge duty cycles.

Can SMB10J13AHE3_A/H replace bidirectional TVS diodes in circuit designs?

No, SMB10J13AHE3_A/H is strictly unidirectional and must not be substituted for bidirectional TVS diodes (e.g., SMBJ13CA) without circuit redesign. Its cathode-band polarity requires correct orientation across DC rails; using it in AC or floating signal paths risks failure during negative excursions. Bidirectional variants have symmetric breakdown in both directions and no polarity marking. Always verify signal topology and transient polarity before selecting SMB10J13AHE3_A/H or any unidirectional TVS.