Vishay General Semiconductor - Diodes Division MSMP7.0A-M3/89A

Overview

MSMP7.0A-M3/89A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the MicroSMP (DO-219AD) package, with 7.0 V stand-off voltage, 7.78–8.60 V breakdown voltage at 10 mA, 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 MSMP7.0A-M3/89A datasheet, MSMP7.0A-M3/89A pinout, MSMP7.0A-M3/89A application, or MSMP7.0A-M3/89A equivalent, key selection criteria include clamping voltage (12.0 V max at 12.5 A), junction temperature range (−55 °C to +150 °C), ESD robustness (15 kV air / 8 kV contact), and MicroSMP footprint compatibility with automated SMT assembly.

Technical Context

This TVS diode uses an oxide planar chip junction and unidirectional polarity, with cathode denoted by a color band. Its clamping behavior follows V_CL = R_D × I_PPM + V_BR(max), where R_D is dynamic resistance (0.272 Ω max). It operates within a thermal resistance profile of R_θJA = 250 °C/W (free air) and R_θJM = 30 °C/W (on 6 mm × 6 mm copper pads).

The device meets J-STD-020C MSL Level 1, supports lead-free reflow up to 260 °C peak, and passes JESD201 Class 2 whisker testing. Its 0.65 mm typical height and halogen-free, RoHS-compliant construction make it suitable for space-constrained, high-reliability PCB layouts in automotive ECUs and industrial sensors.

Key Specifications

Pinout & Package

Package: MicroSMP (DO-219AD), 2-terminal surface-mount package with 0.106" × 0.091" (2.70 mm × 2.30 mm) outline and 0.030" (0.75 mm) max height. Cathode identified by molded color band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ7.0A and SMCJ7.0A, the MSMP7.0A-M3/89A delivers identical electrical clamping performance in a 60 % smaller footprint and 0.65 mm lower profile-critical for next-generation automotive domain controllers where PCB real estate and Z-height are constrained.

Availability

MSMP7.0A-M3/89A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive inputs, and lighting control systems requiring stable component supply, AEC-Q101 compliance, and MicroSMP footprint consistency.

Supply support for MSMP7.0A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and automotive-grade qualification.

The MSMP series targets high-density, AEC-Q101-compliant transient suppression in automotive and industrial electronics, prioritizing low-profile packaging, repeatable clamping, and robust ESD immunity without compromising surge rating.

FAQ

What is the exact breakdown voltage range for MSMP7.0A-M3/89A?

The MSMP7.0A-M3/89A has a guaranteed breakdown voltage (V_BR) range of 7.78 V to 8.60 V at 10 mA test current, as confirmed in the Vishay datasheet (Document Number: 89457, page 2). This range defines the minimum and maximum voltage at which the device enters controlled avalanche conduction under standardized test conditions. The MSMP7.0A-M3/89A maintains this specification across its full operating temperature range and lifetime.

Is MSMP7.0A-M3/89A suitable for automotive applications?

Yes, MSMP7.0A-M3/89A is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, lighting modules, and sensor interfaces. Its construction meets JESD201 Class 2 whisker resistance, MSL Level 1 moisture sensitivity, and 260 °C peak reflow compatibility. The MSMP7.0A-M3/89A also satisfies ESD immunity requirements per AEC-Q101-001 (≥8 kV contact) and IEC 61000-4-2 (≥15 kV air), making it appropriate for under-hood and cabin-mounted systems.

What does the "M3/89A" suffix indicate in MSMP7.0A-M3/89A?

The "M3" suffix denotes halogen-free, RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "89A" specifies the preferred packaging code: 7-inch plastic tape and reel containing 4500 units. This packaging format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly. The MSMP7.0A-M3/89A is not AEC-Q101 qualified in the M3 variant-only HM3 variants carry that qualification.

How does the clamping voltage of MSMP7.0A-M3/89A compare to its stand-off and breakdown voltages?

The MSMP7.0A-M3/89A has a 7.0 V stand-off voltage (V_WM), a 7.78–8.60 V breakdown voltage (V_BR), and a maximum clamping voltage (V_CL) of 12.0 V at 12.5 A (10/1000 μs). This 5.0 V headroom between V_WM and V_CL ensures safe operation during normal signaling while providing effective suppression during transients. The MSMP7.0A-M3/89A's clamping ratio (V_CL/V_BR(min)) is ~1.54, reflecting efficient low-dynamic-resistance avalanche behavior.

Can MSMP7.0A-M3/89A replace older SMA or SMB package TVS diodes?

MSMP7.0A-M3/89A is not a direct pin-to-pin replacement for SMA or SMB packages due to its MicroSMP (DO-219AD) footprint, which measures 2.70 mm × 2.30 mm versus 4.5 mm × 2.7 mm (SMA) or 3.9 mm × 2.6 mm (SMB). However, it provides identical electrical performance (V_WM, V_BR, V_CL) in a significantly smaller, lower-profile package. Redesign of the PCB pad layout is required to use MSMP7.0A-M3/89A, but the MSMP7.0A-M3/89A offers superior density and thermal performance per unit area.