Vishay General Semiconductor - Diodes Division MSMP8.0A-M3/89A

Overview

MSMP8.0A-M3/89A from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in MicroSMP (DO-219AD) package, with 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR), 150 W peak pulse power (10/1000 μs), and AEC-Q101 qualification. It protects MOSFETs and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial control modules.

For engineers reviewing the MSMP8.0A-M3/89A datasheet, MSMP8.0A-M3/89A pinout, MSMP8.0A-M3/89A application, or MSMP8.0A-M3/89A equivalent, key selection criteria include clamping voltage (13.6 V max at 11.0 A), low-profile height (0.65 mm), MSL Level 1 rating, ESD robustness (15 kV air / 8 kV contact), and halogen-free RoHS-compliant construction.

Technical Context

This device operates as a unidirectional TVS diode with oxide planar chip junction, optimized for fast response to transient overvoltages. Its clamping behavior follows V_CL = R_D × I_PPM + V_BR(max), where R_D is 0.342 Ω max and V_BR(max) is 9.83 V - yielding 13.6 V max clamping at 11.0 A IPPM under 10/1000 μs waveform.

Thermal performance is defined by R_θJA = 250 °C/W (free air) and R_θJM = 30 °C/W (on 6.0 mm × 6.0 mm copper pads). It meets J-STD-020C MSL Level 1 with peak reflow at 260 °C and passes JESD 201 Class 2 whisker testing.

Key Specifications

Pinout & Package

MicroSMP (DO-219AD) is a 2-terminal surface-mount package with cathode marked by a color band. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Mounting requires 6.0 mm × 6.0 mm copper pads per terminal for rated thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ8.0A and SMF8.0A, the MSMP8.0A-M3/89A uniquely combines AEC-Q101 qualification, 0.65 mm height, and MicroSMP footprint - making it the only choice for space-constrained automotive modules requiring full automotive reliability validation.

Availability

MSMP8.0A-M3/89A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and USB port ESD suppression requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MSMP8.0A-M3/89A 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, and protection devices with emphasis on reliability, miniaturization, and automotive-grade validation.

The MSMP series belongs to Vishay's TRANSZORB® eSMP® family, engineered specifically for high-density, low-profile transient suppression in automotive and industrial electronics where board space and thermal constraints limit traditional TVS solutions.

FAQ

What is the clamping voltage of the MSMP8.0A-M3/89A under standard 10/1000 μs surge conditions?

The MSMP8.0A-M3/89A has a maximum clamping voltage (V_CL) of 13.6 V at 11.0 A peak pulse current under the 10/1000 μs waveform. This value is measured per the formula V_CL = R_D × I_PPM + V_BR(max), where R_D is 0.342 Ω max and V_BR(max) is 9.83 V. The clamping performance ensures protected circuits remain below critical voltage thresholds during surge events.

Is the MSMP8.0A-M3/89A qualified for automotive applications?

Yes, the MSMP8.0A-M3/89A is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 89457). This qualification covers stress tests including HBM ESD (>8 kV contact), temperature cycling, and high-temperature operating life - validating its suitability for under-hood and cabin electronics in passenger vehicles and commercial vehicles.

What does the "M3/89A" suffix indicate in MSMP8.0A-M3/89A?

The "M3" suffix denotes halogen-free, RoHS-compliant, commercial-grade construction with matte tin-plated terminals meeting J-STD-002 and JESD 22-B102 solderability standards. The "89A" is the preferred package code specifying 7-inch plastic tape-and-reel delivery with 4500 units per reel - a standard configuration for automated SMT placement.

How does the MicroSMP (DO-219AD) package of the MSMP8.0A-M3/89A compare thermally to larger packages like DO-214AC?

The MicroSMP package of the MSMP8.0A-M3/89A has R_θJA = 250 °C/W (free air) versus ~50 °C/W for DO-214AC devices like SMAJ8.0A. However, its R_θJM = 30 °C/W on 6.0 mm × 6.0 mm copper pads enables effective heat transfer when properly mounted - making it viable for short-duration transients despite higher ambient thermal resistance.

Can the MSMP8.0A-M3/89A be used in bidirectional configurations?

No, the MSMP8.0A-M3/89A is unidirectional only, as explicitly stated in the Vishay datasheet. It features a single polarity with cathode marked by a color band. For bidirectional protection, designers must select a dedicated bidirectional variant (e.g., MSMB8.0A) or use back-to-back unidirectional devices - the MSMP8.0A-M3/89A itself cannot suppress negative-going transients.