Diodes Incorporated SMBJ160A-13-F

Overview

SMBJ160A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 160V reverse standoff voltage, 178V minimum breakdown voltage at 1mA test current, 259V maximum clamping voltage at 2.3A peak pulse current, and SMB package. It protects DC power rails and signal lines in industrial motor drives against IEC 61000-4-5 surge events.

For engineers reviewing the SMBJ160A-13-F datasheet, SMBJ160A-13-F pinout, SMBJ160A-13-F application, or SMBJ160A-13-F equivalent, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current capability under 8.3ms half-sine waveform, thermal derating above +25°C, and RoHS-compliant lead-free plating for reflow compatibility.

Technical Context

This TVS operates as a unidirectional avalanche clamp: forward-biased during positive transients on cathode-grounded configurations, with fast response (<1 ns) to ESD and lightning-induced surges. Its glass-passivated die ensures stable breakdown characteristics over temperature and lifetime.

Designed for single-pulse suppression per JEDEC JESD22-A114E, it delivers 600W peak power at TA = +25°C, derating linearly at 4.8W/°C above ambient. Steady-state dissipation is limited to 5.0W at TL = +75°C, requiring PCB copper area for thermal management.

Key Specifications

Pinout & Package

Two-terminal device in SMB package: Cathode marked by band on top surface; Anode and Cathode terminals are electrically symmetric in layout but functionally polarized. Package dimensions: 5.59 mm length × 4.57 mm width × 2.21 mm height; weight ≈ 0.1 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ160CA-13-F, the unidirectional SMBJ160A-13-F offers lower leakage and tighter clamping tolerance; versus SMCJ160A-13-F, it trades peak power headroom for compactness and lower thermal mass-critical for space-constrained industrial controllers.

Availability

SMBJ160A-13-F is available at Aetrix Electronics and suitable for industrial motor drives, AC-DC power supplies, telecom power feeds, and renewable energy inverters requiring stable component supply and long-term obsolescence management.

Supply support for SMBJ160A-13-F 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The SMBJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability industrial and automotive surge protection where precise clamping, low leakage, and RoHS compliance are mandatory.

FAQ

What is the maximum clamping voltage of SMBJ160A-13-F at its rated peak pulse current?

The maximum clamping voltage is 259V at 2.3A peak pulse current (I_PP), measured using the standardized 8.3ms half-sine waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a worst-case surge event.

Can SMBJ160A-13-F be used in bidirectional signal lines like RS-485?

No-SMBJ160A-13-F is unidirectional and conducts only when cathode voltage exceeds anode voltage by ≥178V. For RS-485 or other AC-coupled or floating differential lines, the bi-directional variant SMBJ160CA-13-F must be used to clamp both positive and negative transients symmetrically.

How does the SMB package affect thermal performance compared to SMA or SMC?

The SMB package has lower thermal resistance than SMA (smaller die pad area) but higher than SMC (larger copper exposure). At TL = +75°C, its steady-state power dissipation is rated at 5.0W-requiring ≥1 cm² of 2-oz copper pour for reliable operation. Derating follows 4.8W/°C above +25°C ambient.

Is SMBJ160A-13-F compliant with automotive AEC-Q200 requirements?

No-SMBJ160A-13-F is qualified for commercial temperature range (−55°C to +150°C) and RoHS compliance, but it is not AEC-Q200 stress-tested or certified. For automotive applications, Diodes' AEC-Q200-qualified P6SMBJ160A or SMAJ160A series should be selected instead.