Diodes Incorporated SMCJ64CAQ-13-F

Overview

SMCJ64CAQ-13-F from Diodes Incorporated is a bidirectional 1,500W automotive transient voltage suppressor (TVS) diode in SMC package, with 64V reverse standoff voltage (VRWM), 71.1–78.6V breakdown voltage (VBR), and 103V clamping voltage (VC) at 14.6A peak pulse current (IPP). It protects CAN, LIN, and power-line circuits in engine control units and body electronics against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD surges.

For engineers reviewing the SMCJ64CAQ-13-F datasheet, SMCJ64CAQ-13-F pinout, SMCJ64CAQ-13-F application, or SMCJ64CAQ-13-F equivalent, key selection criteria include clamping performance under 10/1000μs surge, AEC-Q101 qualification status, bidirectional polarity for AC-coupled lines, and SMC package thermal derating above +25°C ambient.

Technical Context

This bidirectional TVS operates symmetrically across both polarities, enabling protection of differential signal lines like CAN H/L without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5µA at VRWM) over -55°C to +150°C operating range.

The device responds in <1ps to transients and clamps energy within a defined 10×1000μs waveform envelope, delivering 1,500W peak pulse power at TA = +25°C - derated linearly to ~750W at +100°C per Fig. 1 in DS40741 Rev. 8-2.

Key Specifications

Pinout & Package

SMCJ64CAQ-13-F uses the SMC (DO-214AB) package: molded plastic body, cathode band absent (bidirectional), 5.59–6.22mm length (A), 6.60–7.11mm width (B), 2.75–3.18mm thickness (C), and 7.75–8.13mm lead-to-lead width (E).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional TVS diode applications.

Compared with SAC64CA-13-F and TPSMD64CA, SMCJ64CAQ-13-F uniquely delivers AEC-Q101 qualification, 1,500W surge capacity, and 103V clamping in a single qualified component-enabling direct use in safety-critical ECU and ADAS power domains without requalification.

Availability

SMCJ64CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN FD gateways, and body control modules requiring stable component supply across multi-year automotive production cycles.

Supply support for SMCJ64CAQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.

SMCJ64CAQ-13-F belongs to Diodes' AEC-Q101-qualified SMCJ automotive TVS family, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh-temperature vehicle environments.

FAQ

What is the maximum clamping voltage for SMCJ64CAQ-13-F at its rated peak pulse current?

The maximum clamping voltage (VC) is 103V at a peak pulse current (IPP) of 14.6A, measured using the standardized 10×1000μs waveform per REA and Fig. 4 in DS40741 Rev. 8-2. This value is guaranteed across the full operating temperature range of -55°C to +150°C and defines the upper voltage limit imposed on protected circuitry during surge events.

Is SMCJ64CAQ-13-F unidirectional or bidirectional, and how is polarity identified?

SMCJ64CAQ-13-F is bidirectional, indicated by the "C" suffix in the part number. It has no cathode band or polarity marking, as both terminals function identically for surge conduction in either direction-making it suitable for AC-coupled lines like CAN, LIN, and Ethernet PHY interfaces without orientation concerns during placement.

Does SMCJ64CAQ-13-F meet automotive qualification standards?

Yes, SMCJ64CAQ-13-F is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It complies with ISO7637-2 (Pulse 1, 2a, 3a, 3b) and ISO10605 (±30kV air/contact discharge), and carries RoHS 3, halogen-free, and lead-free certifications per Diodes' product definitions.

How does thermal derating affect the 1,500W peak pulse rating of SMCJ64CAQ-13-F?

The 1,500W rating applies only at TA = +25°C. Per Fig. 1 in DS40741 Rev. 8-2, pulse power must be linearly derated to ~1,125W at +50°C, ~750W at +100°C, and ~375W at +150°C. Effective derating requires proper PCB copper area (≥25 mm² 2-oz) and airflow to maintain junction temperature below +150°C during repeated surges.