Taiwan Semiconductor Corporation P6SMB16A

Overview

P6SMB16A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 15.2–16.8 V, clamping to ≤22.5 V at 28 A peak pulse current, and stand-off voltage of 13.6 V. It is designed for overvoltage protection in DC power rails of switching mode power supplies, adapters, and display electronics.

For engineers reviewing the P6SMB16A datasheet, P6SMB16A pinout, P6SMB16A application, or P6SMB16A equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, 1 μA max reverse leakage at V_WM, 1.0 ps typical response time, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive-grade surge immunity.

Technical Context

The P6SMB16A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage (V_BR = 15.2 V at I_T = 1.0 mA) and clamping transients to ≤22.5 V at I_PPM = 28 A under 10/1000 μs waveform. Its glass-passivated junction ensures stable V_BR tolerance (±5%) and low temperature coefficient (0.086 %/°C).

Thermally, it features R_θJA = 55 °C/W and R_θJC = 10 °C/W, enabling reliable operation up to T_J = +150 °C. With <1 μA reverse leakage at 13.6 V and fast sub-picosecond response, it protects sensitive downstream circuitry without loading normal operating conditions.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ16A and 1.5SMC16A, the P6SMB16A offers tighter clamping (22.5 V vs. 24.4 V/25.5 V), higher peak current capability (28 A), and optimal fit for space-constrained SMB layouts-making it preferred for modern compact power designs where voltage margin and footprint are critical.

Availability

P6SMB16A is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, consistent parametric performance, and full traceability through production lifecycles.

Supply support for P6SMB16A 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.

The P6SMB16A belongs to TSC's P6SMB series of 600 W SMB-packaged TVS diodes, engineered for robust transient immunity in cost-sensitive industrial and consumer power systems where reliability, small size, and ISO 7637-2 compliance are mandatory.

FAQ

What is the polarity configuration of the P6SMB16A?

The P6SMB16A is a unidirectional TVS diode, configured with an anode and cathode terminal. The cathode is marked by a band on the DO-214AA package body. It conducts in forward bias like a standard diode and clamps transients only in reverse bias - making it suitable for protecting positive DC rails referenced to ground. This polarity must be observed during PCB layout to ensure correct protection directionality in the P6SMB16A application.

Does the P6SMB16A meet automotive surge standards?

Yes, the P6SMB16A meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load dump interruption), Pulse 2b (supply line interruption), Pulse 3a (capacitive coupled transients), and Pulse 3b (inductive coupled transients). Its 600 W peak pulse rating and verified clamping behavior under standardized waveforms make it appropriate for front-end protection in automotive infotainment and body control modules where the P6SMB16A is deployed.

What is the maximum clamping voltage of the P6SMB16A at rated surge current?

The P6SMB16A has a maximum clamping voltage (V_C) of 22.5 V when subjected to its rated peak pulse current (I_PPM) of 28 A under the standard 10/1000 μs waveform. This value is guaranteed across temperature and process variation, and defines the upper voltage limit imposed on protected circuitry during transient events - a critical parameter for ensuring compatibility with the absolute maximum ratings of downstream ICs in any P6SMB16A implementation.

How does the P6SMB16A compare to the P6SMB16 (non-A) variant?

The P6SMB16A offers tighter V_BR tolerance (15.2–16.8 V, ±5%) versus the P6SMB16 (14.4–17.6 V, ±10%), resulting in more predictable turn-on behavior and improved design margin. Both share identical package, power rating, and thermal specs, but the 'A' suffix denotes enhanced binning - making the P6SMB16A preferable where precise clamping threshold and reduced parametric spread are required in high-volume P6SMB16A deployments.

Is the P6SMB16A RoHS and halogen-free compliant?

Yes, the P6SMB16A is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free in accordance with IEC 61249-2-21. Its molding compound is UL 94V-0 rated, and matte tin-plated leads satisfy J-STD-002 solderability requirements. These certifications are documented in Taiwan Semiconductor's official qualification reports and apply to all production lots of the P6SMB16A, supporting compliance in consumer, industrial, and medical-adjacent applications.