Diodes Incorporated 3.0SMCJ26A-13

Overview

3.0SMCJ26A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 26V reverse standoff voltage, 42.1V max clamping voltage at 71.3A peak pulse current, and IEC-61000-4-2 ESD protection (30kV air/30kV contact). It protects DC power rails and signal lines in industrial motor drives, automotive body control modules, and telecom power supplies against lightning-induced surges and EFT.

For engineers reviewing the 3.0SMCJ26A-13 datasheet, 3.0SMCJ26A-13 pinout, 3.0SMCJ26A-13 application, or 3.0SMCJ26A-13 equivalent, this part delivers verified 3000W surge handling in SMC package with 26V VRWM, sub-100ns response time, and AEC-Q200-compatible construction for harsh-environment reliability.

Technical Context

This TVS diode operates as a clamping device in parallel with protected circuitry, triggering avalanche breakdown when transient voltage exceeds its 26V standoff rating. Its glass-passivated junction ensures stable leakage (<5µA at VRWM) and repeatable breakdown at 28.9–31.9V under 1mA test current.

The device uses a single-junction silicon avalanche structure optimized for high-energy 10/1000µs waveform suppression. Thermal derating follows JEDEC JESD22-A104, maintaining 100% PPK capability up to +25°C ambient and linearly reducing to ~50% at +125°C per Fig. 1.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating, 0.21g weight, matte tin-plated leads solderable per MIL-STD-202 Method 208. Cathode band denotes polarity on unidirectional variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ26A and 1.5SMCJ26A, the 3.0SMCJ26A-13 provides 50% higher surge energy handling and superior thermal robustness in SMC package-critical for industrial and automotive systems requiring sustained 3000W clamping without degradation.

Availability

3.0SMCJ26A-13 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and renewable energy inverters requiring stable component supply across extended production lifecycles.

Supply support for 3.0SMCJ26A-13 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.

This device belongs to Diodes' 3.0SMCJ series of high-power TVS diodes engineered specifically for automotive-grade and industrial-grade surge immunity-designed to meet ISO 7637-2, IEC 61000-4-2/4-5, and AEC-Q200 requirements.

FAQ

What is the maximum clamping voltage of the 3.0SMCJ26A-13 under rated surge conditions?

The maximum clamping voltage is 42.1V when subjected to a 10/1000µs waveform with 71.3A peak pulse current. This value is measured per REA-defined waveform (Fig. 2) and guarantees voltage limitation below critical thresholds for 24V system components such as microcontrollers and gate drivers.

Is the 3.0SMCJ26A-13 suitable for automotive applications?

Yes-it is constructed in an IATF 16949-certified facility and qualified to AEC-Q200 stress test requirements. While the standard part lacks Q-suffix qualification, its process flow, material controls, and test coverage align with automotive change control protocols; Diodes offers Q-suffix variants (e.g., 3.0SMCJ26AQ-13) for PPAP-submission-ready designs.

How does the SMC package compare to SMA or SMB in terms of thermal performance?

The SMC package provides 30% larger copper pad area than SMB and 60% more than SMA, enabling higher thermal dissipation. At 3000W peak power, SMC maintains junction temperature rise ≤45°C above ambient (with 8mm² copper), whereas SMB would exceed safe limits due to lower thermal mass and interfacial resistance.

Does the 3.0SMCJ26A-13 require derating at elevated ambient temperatures?

Yes-per Figure 1 in DS30818, peak pulse power must be linearly derated above +25°C: at +85°C ambient, maximum PPK drops to ~70% (2100W); at +125°C, it falls to ~45% (1350W). Designers must verify layout copper area and airflow to maintain safe junction temperature during repeated surge events.