Diodes Incorporated SMAJ60AQ-13-F

Overview

SMAJ60AQ-13-F from Diodes Incorporated is a unidirectional 400W surface-mount automotive transient voltage suppressor (TVS) diode with 60V reverse standoff voltage, 96.8V max clamping voltage at 4.1A peak pulse current, and AEC-Q101 qualification for ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD protection in 12V/24V vehicle power networks.

For engineers reviewing the SMAJ60AQ-13-F datasheet, SMAJ60AQ-13-F pinout, SMAJ60AQ-13-F application, or SMAJ60AQ-13-F equivalent, this device supports robust front-end surge protection in automotive body control modules, infotainment power rails, and ADAS sensor interfaces where clamping performance, low leakage (<0.5µA), and IATF 16949 traceability are critical selection criteria.

Technical Context

This TVS diode operates as a unidirectional clamping device in series with automotive power lines, triggering at 66.7V minimum breakdown voltage (V_BR) and limiting transients to ≤96.8V under 10×1000µs waveform conditions. Its glass-passivated junction ensures stable leakage (<0.5µA at VRWM) and thermal stability across –55°C to +175°C junction temperature range.

Designed for single-pulse suppression only, it delivers 400W peak pulse power (PPK) with 40A non-repetitive forward surge rating (IFSM), derated above +25°C ambient per Figure 1. The SMA package enables compact placement near connectors or ECUs without compromising thermal dissipation at TL = +75°C (PM(AV) = 1.0W).

Key Specifications

Pinout & Package

Package: SMA (Surface Mount Assembly), molded plastic UL 94V-0 housing, 0.064g weight, cathode band polarity indicator, lead-free matte tin plating, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional automotive TVS applications.

Compared with SMAJ60A-13-F, SMAJ60AQ-13-F adds AEC-Q101 validation and PPAP support without sacrificing clamping performance; versus 1.5SMC60A-Q, it trades thermal headroom for 40% smaller board area-critical for space-constrained ADAS camera modules.

Availability

SMAJ60AQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, and ADAS sensor protection requiring stable component supply, full AEC-Q101 documentation, and IATF 16949 traceability.

Supply support for SMAJ60AQ-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.

The SMAJ series targets automotive-grade transient suppression, designed specifically to meet ISO7637-2 and ISO10605 requirements in space-constrained, high-reliability vehicle subsystems.

FAQ

Is SMAJ60AQ-13-F bidirectional or unidirectional?

SMAJ60AQ-13-F is unidirectional, indicated by the absence of "C" suffix (e.g., SMAJ60CAQ-13-F would be bidirectional). It features a cathode band marking and conducts only during reverse-bias overvoltage events, making it suitable for DC power line protection where polarity is fixed.

What is the maximum operating temperature for SMAJ60AQ-13-F?

The junction temperature range is –55°C to +175°C, with storage temperature matching that range. At ambient temperatures above +25°C, peak pulse power must be derated per Figure 1 in DS40739 Rev. 17–2; at TA = +85°C, PPK drops to ~280W for 10×1000µs pulses.

Does SMAJ60AQ-13-F require a heatsink for 1.0W steady-state dissipation?

No external heatsink is required. The 1.0W PM(AV) rating applies at TL = +75°C (lead temperature), achievable via standard 1oz copper pad (≥25mm²) per Diodes' recommended SMA pad layout. Thermal resistance from junction to leads is 15°C/W, enabling natural convection cooling in automotive under-dash environments.

How does SMAJ60AQ-13-F differ from industrial-grade SMAJ60A-13-F?

SMAJ60AQ-13-F adds AEC-Q101 qualification, PPAP documentation support, and manufacturing in IATF 16949-certified facilities-requirements absent in SMAJ60A-13-F. Electrically identical, the "Q" variant guarantees automotive change control, lot traceability, and extended reliability testing for safety-critical vehicle systems.