Vishay General Semiconductor - Diodes Division P6SMB82A-M3/52

Overview

P6SMB82A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 70.1 V stand-off voltage (V_WM), 77.9–86.1 V breakdown voltage (V_BR) at 1 mA, 113 V maximum clamping voltage (V_C) at 5.3 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.

For engineers reviewing the P6SMB82A-M3/52 datasheet, P6SMB82A-M3/52 pinout, P6SMB82A-M3/52 application, or P6SMB82A-M3/52 equivalent, this device delivers verified transient suppression performance in compact SMB packaging, with halogen-free RoHS compliance, MSL Level 1 rating, and AEC-Q101 qualification available in related variants - critical for automotive-grade ESD and surge protection design validation.

Technical Context

This unidirectional TVS diode operates as a voltage-clamping protector: when reverse voltage exceeds V_WM = 70.1 V, it avalanches to limit transient energy, clamping to ≤113 V at 5.3 A (10/1000 µs). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at V_WM), while the SMB package supports automated SMT placement and meets UL 94 V-0 flammability.

Thermal resistance is R_θJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads), enabling reliable operation up to T_J = 150 °C. The device sustains non-repetitive 100 A forward surge (8.3 ms half-sine) and exhibits a +0.105 %/°C temperature coefficient of V_BR, ensuring predictable voltage shift across temperature.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound. Cathode indicated by band on body; anode is unmarked end.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ85A-E3/5T and 1.5SMC82A, the P6SMB82A-M3/52 offers optimal balance of clamping performance (113 V), compact SMB footprint, and halogen-free compliance - making it ideal for space-constrained, high-volume industrial and automotive modules where thermal management and material sustainability are prioritized.

Availability

P6SMB82A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives in the same family.

Supply support for P6SMB82A-M3/52 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.

The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high pulse power, stable clamping, and long-term parametric consistency are mandatory.

FAQ

What is the maximum clamping voltage of the P6SMB82A-M3/52 under a 10/1000 µs surge?

The P6SMB82A-M3/52 has a maximum clamping voltage (V_C) of 113 V at 5.3 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream component survival in IEC 61000-4-5 testing scenarios.

Is the P6SMB82A-M3/52 halogen-free and RoHS-compliant?

Yes, the P6SMB82A-M3/52 carries the "M3" suffix, indicating it is halogen-free and fully RoHS-compliant per EU Directive 2015/863. Its molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin-plated per J-STD-002, satisfying both environmental and solderability requirements for modern electronics assembly - confirmed in Vishay's ordering information table on page 3 of document 88370.

Does the P6SMB82A-M3/52 have AEC-Q101 qualification?

The P6SMB82A-M3/52 itself is not AEC-Q101 qualified; however, the P6SMB82AHM3_B/H variant (with "HM3_B" suffix) is explicitly listed as AEC-Q101 qualified in the same datasheet. For automotive applications requiring qualification, engineers must specify the HM3_B or HM3_I version - the P6SMB82A-M3/52 remains commercial-grade with identical electrical specs but lacks formal automotive stress-test certification.

What is the thermal resistance of the P6SMB82A-M3/52, and how does it affect PCB layout?

The P6SMB82A-M3/52 has a typical junction-to-ambient thermal resistance (R_θJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Figure 5; reducing pad size increases thermal impedance and risks exceeding T_J = 150 °C during repetitive surges - so designers must maintain specified copper area and consider thermal vias for high-duty-cycle applications.

How does the temperature coefficient of V_BR impact the P6SMB82A-M3/52 in wide-temperature applications?

The P6SMB82A-M3/52 has a V_BR temperature coefficient of +0.105 %/°C, meaning its breakdown voltage increases by ~0.08 V/°C above 25 °C. At 125 °C ambient, V_BR rises to approximately 84.5 V - still within the 77.9–86.1 V spec range - ensuring consistent clamping behavior across the full -65 °C to +150 °C operating junction range without false triggering or loss of protection margin.