Diodes Incorporated P6SMAJ7.5ADF-13

Overview

P6SMAJ7.5ADF-13 from Diodes Incorporated is a 600W surface-mount transient voltage suppressor (TVS) diode designed for unidirectional overvoltage protection in DC power rails and signal lines. It features a 7.5V reverse standoff voltage, 8.33–9.58V breakdown voltage at 1.0mA test current, 12.9V max clamping voltage at 46.5A peak pulse current, and D-FLAT package for space-constrained PCB layouts-used in industrial power supplies and automotive body control modules.

For engineers reviewing the P6SMAJ7.5ADF-13 datasheet, P6SMAJ7.5ADF-13 pinout, P6SMAJ7.5ADF-13 application, or P6SMAJ7.5ADF-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC V_DD, peak pulse current capability under IEC 61000-4-5 surge conditions, thermal resistance to PCB copper pad area, and RoHS/Green compliance for export-sensitive designs.

Technical Context

This unidirectional TVS operates as a clamping device: it remains high-impedance below VRWM (7.5V), avalanches sharply at VBR (min 8.33V), and limits transient energy by holding VC ≤12.9V during 10/1000µs surges up to 46.5A. Its glass-passivated junction ensures stable leakage (<100µA at VRWM) and repeatable breakdown behavior across temperature.

The D-FLAT package enables low-profile mounting with defined thermal paths-R_θJA = 92°C/W on 0.4"×0.5" 2oz copper pad-supporting reliable power dissipation during repetitive transients. Polarity is marked by cathode band; anode connects to ground or return path in standard unidirectional configuration.

Key Specifications

Pinout & Package

Package: D-FLAT - low-profile surface-mount package (2.25–2.95mm width, 3.95–4.60mm length, 0.90–1.10mm height), UL 94V-0 rated, matte tin annealed terminals, cathode band polarity indicator.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ7.5A and 1.5SMC7.5A, P6SMAJ7.5ADF-13 delivers optimal balance of compact D-FLAT packaging, verified 92°C/W thermal performance on minimal copper, and precise 8.33–9.58V VBR range-making it preferred for space- and thermally constrained industrial and automotive PCBs where consistent clamping behavior is critical.

Availability

P6SMAJ7.5ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, DC power supply input stages, and USB-C VBUS protection requiring stable component supply and full traceability.

Supply support for P6SMAJ7.5ADF-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The P6SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for high-reliability, surface-mount overvoltage protection in harsh environments-including industrial automation, automotive electronics, and telecom infrastructure.

FAQ

What is the polarity configuration of P6SMAJ7.5ADF-13?

P6SMAJ7.5ADF-13 is a unidirectional TVS diode with cathode (pin 1) and anode (pin 2). The cathode must be connected to the line being protected, and the anode to ground or reference potential. This configuration ensures fast, low-clamping response to positive-going transients while blocking reverse leakage below VRWM.

Does P6SMAJ7.5ADF-13 meet IEC 61000-4-5 surge immunity standards?

Yes-its 600W peak pulse power rating and 46.5A IPP at 12.9V clamping voltage align with IEC 61000-4-5 Level 4 (4kV line-to-earth, 2kV line-to-line) for 10/1000µs waveform. Performance assumes proper PCB layout: ≥0.4"×0.5" 2oz copper pad and short, low-inductance traces to ground.

How does the D-FLAT package affect thermal performance compared to SMA?

The D-FLAT package achieves R_θJA = 92°C/W on a 0.4"×0.5" 2oz pad-significantly better than standard SMA's ~130°C/W. This results from optimized thermal path geometry and direct die-to-pad conduction, enabling higher sustained surge duty cycles without thermal runaway in compact designs.

Can P6SMAJ7.5ADF-13 be used in bidirectional applications?

No-it is strictly unidirectional. For bidirectional protection (e.g., AC lines or differential signals), a symmetric TVS like P6SMBJ7.5CA or dedicated bidirectional array is required. Using P6SMAJ7.5ADF-13 in reverse-biased configurations risks permanent breakdown due to lack of reverse avalanche rating.