Diodes Incorporated SA6V0A-T-F

Overview

SA6V0A-T-F from Diodes Incorporated is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-15 package, rated for 6.0 V reverse standoff voltage, 6.67–7.37 V breakdown voltage at 10 mA, and 10.3 V clamping voltage at 48.5 A peak pulse current. It operates from –65°C to +175°C and is used for primary overvoltage protection on DC power rails and I/O lines in industrial power supplies.

For engineers reviewing the SA6V0A-T-F datasheet, SA6V0A-T-F pinout, SA6V0A-T-F application, or SA6V0A-T-F equivalent, key selection criteria include clamping voltage margin vs. protected IC V_DD, peak pulse current capability under 10/1000 µs waveform, thermal derating above 75°C lead temperature, and RoHS-compliant matte tin plating compatibility with lead-free reflow.

Technical Context

This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps typical) to transient events such as ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (10/1000 µs waveform). Its unidirectional configuration provides low-leakage (<600 µA @ 6.0 V) and precise clamping without reverse conduction during normal operation.

The device is characterized per REA-defined 10 × 1000 µs pulse waveform and exhibits a voltage temperature coefficient of +5.0 mV/°C - enabling predictable clamping shift across automotive and industrial ambient ranges. Derating follows linear reduction from 500 W at T_L = 75°C to zero at T_L = 175°C.

Key Specifications

Pinout & Package

Package: DO-15 molded plastic case (UL 94V-0), axial leads, 9.5 mm lead length (board-mounted), 0.4 g typical weight. Matte tin-plated leads, RoHS compliant, solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SA6V0A-T-F, P6KE6V8A offers greater surge headroom at the cost of marginally higher clamping, while SMAJ6.0A trades power handling for compactness and lower profile - making each suitable for distinct mechanical, thermal, and threat-level requirements.

Availability

SA6V0A-T-F is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, point-of-load converters, and factory automation sensor interfaces requiring stable component supply and long-lifecycle support.

Supply support for SA6V0A-T-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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.

The SA-series TVS diodes are engineered for robust transient suppression in harsh environments, targeting applications where sustained thermal performance, precise clamping, and long-term stability under repeated surge stress are critical design requirements.

FAQ

What does the "-T-F" suffix indicate in SA6V0A-T-F?

The "-T" denotes tape-and-reel packaging (4,000 units per reel, 13-inch reel), and "-F" specifies RoHS-compliant matte tin plating on leads. This configuration ensures automated SMT placement compatibility and compliance with EU Directive 2011/65/EU, including exemptions for high-temperature soldering and glass passivation.

Is SA6V0A-T-F suitable for bidirectional signal line protection?

No - SA6V0A-T-F is unidirectional and designed only for DC-biased lines like power rails or single-ended digital I/O referenced to ground. For bidirectional signal lines (e.g., RS-485, USB D+/D−), use the "CA" suffix variant (e.g., SA6V0CA-T-F) or a purpose-built bidirectional TVS with symmetrical clamping characteristics.

How does thermal derating affect SA6V0A-T-F's surge capability in high-temperature PCB layouts?

At lead temperature (T_L) above 75°C, peak pulse power must be linearly derated to zero at 175°C. For example, at T_L = 125°C, maximum allowable P_PK drops to 250 W - reducing I_PP to ~34 A at 10.3 V. Board layout must ensure adequate copper area and airflow to maintain T_L ≤ 75°C during surge events.

Why is SA6V0A-T-F marked "Not Recommended for New Design"?

Diodes Incorporated issued this advisory due to obsolescence planning for the SA-series in favor of next-generation P6KE and SMxJ families offering improved surge consistency, tighter parameter distributions, and broader qualification for AEC-Q101. Existing designs may continue using SA6V0A-T-F, but new designs should evaluate P6KE6V8A or SMAJ6.0A per application requirements.