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Vishay General Semiconductor - Diodes Division MSMP8.5A-M3/89A
- Part No.:
- MSMP8.5A-M3/89A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AD
- Datasheet:
-
MSMP8.5A-M3/89A.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC MICROSMP
- Quantity:
- Payment:
- Shipping:
Inventory:14,529
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Product details
Overview
MSMP8.5A-M3/89A from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in MicroSMP (DO-219AD) package, with 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR), 150 W peak pulse power (10/1000 μs), and AEC-Q101 qualification. It protects automotive sensor signal lines against ESD and load-switching transients.
For engineers reviewing the MSMP8.5A-M3/89A datasheet, MSMP8.5A-M3/89A pinout, MSMP8.5A-M3/89A application, or MSMP8.5A-M3/89A equivalent, key selection criteria include clamping voltage (14.4 V max at 10.4 A), low-profile height (0.65 mm), MSL Level 1 rating, and halogen-free RoHS-compliant construction for automated SMT assembly.
Technical Context
This TVS diode uses an oxide planar chip junction and unidirectional polarity to provide fast-response overvoltage clamping on DC supply or signal rails. Its 150 W peak pulse power rating applies under standardized 10/1000 μs waveform conditions with derating above 25 °C ambient.
Thermal performance is defined by RθJA = 250 °C/W (free air) and RθJM = 30 °C/W (on 6.0 mm × 6.0 mm copper pads). It meets IEC 61000-4-2 ESD immunity (15 kV air / 8 kV contact) and AEC-Q101 stress testing for automotive reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 9.44 V / 10.4 V at 1.0 mA - ensures reliable turn-on within tight tolerance band |
| VCL max | 14.4 V at IPPM = 10.4 A - defines worst-case clamping level during surge |
| PPPM | 150 W (10/1000 μs) - surge energy handling capability for automotive load-dump and inductive switching |
| ESD rating | 15 kV air / 8 kV contact - exceeds IEC 61000-4-2 Level 4 for system-level robustness |
| Package | MicroSMP (DO-219AD), 0.106" × 0.091" × 0.022", 0.65 mm height - enables ultra-thin PCB designs |
| Qualification | AEC-Q101 qualified - validated for automotive under-hood and cabin electronics |
Pinout & Package
MicroSMP (DO-219AD) is a two-terminal surface-mount package with cathode indicated by a color band. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected line (e.g., sensor output); conducts when voltage exceeds VBR |
| Cathode | Current exit terminal during clamping | Connected to ground or lower-potential rail; marked by visible color band |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.65 mm typical height) | Enables use in space-constrained automotive modules where Z-height is critical |
| Oxide planar chip junction | Delivers stable, repeatable breakdown characteristics and long-term reliability under repeated surges |
| MSL Level 1, LF peak 260 °C | Supports standard lead-free reflow without preconditioning or special handling |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for global automotive and industrial shipments |
| 15 kV air / 8 kV contact ESD rating | Provides system-level ESD protection without requiring additional external components |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of temperature, pressure, or position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient-induced latch-up or damage while maintaining signal integrity below 14.4 V clamping threshold. | Use Scenario: Safeguarding 24 V PLC digital input channels exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff protection device on input node, absorbing repetitive 150 W pulses without degradation. Use Value: Extends system uptime by preventing false triggering or component failure during factory floor transients. |
| USB/Serial Data Line Protection | DC Power Rail Clamping |
Use Scenario: ESD suppression on RS-485 or CAN FD transceiver signal pairs in vehicle telematics gateways. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential across bus lines to shunt ESD without distorting data edges. Use Value: Maintains signal fidelity while meeting >15 kV IEC 61000-4-2 immunity without adding series impedance. | Use Scenario: Secondary overvoltage clamp on 12 V battery-fed subsystems (e.g., infotainment power domain). IC Role / Device Role / Timing Role: Fast-acting parallel protection element that activates after primary regulator fails or during load dump. Use Value: Prevents downstream IC destruction by clamping to ≤14.4 V within nanoseconds of overvoltage onset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5A | DO-214AC (SMA) package, 2.5 mm height, higher RθJA (400 °C/W), same VWM/VBR range | Less suitable for ultra-low-profile automotive modules; better for manual repair or high-power board areas | Select SMAJ8.5A only if board height budget allows ≥2.5 mm and thermal pad area is unrestricted |
| SMF8.5A | DO-219AB (SOD-123FL) package, 1.1 mm height, 100 W PPPM rating, identical VWM/VBR specs | Limited to lower-energy transients; not AEC-Q101 qualified | Choose SMF8.5A for cost-sensitive consumer or industrial applications where AEC-Q101 is not required |
Compared with SMAJ8.5A and SMF8.5A, the MSMP8.5A-M3/89A uniquely combines AEC-Q101 qualification, 150 W surge capacity, and sub-0.7 mm height-making it the only option for next-generation automotive modules demanding both reliability and miniaturization.
Availability
MSMP8.5A-M3/89A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and DC power rail clamping requiring stable component supply and full traceability.
Supply support for MSMP8.5A-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, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing markets.
The MSMP series was designed specifically for AEC-Q101-compliant, ultra-low-profile transient suppression in modern automotive electronics-targeting sensor interfaces, body control modules, and ADAS subsystems where board space and thermal constraints are severe.
FAQ
What is the maximum clamping voltage of the MSMP8.5A-M3/89A at its rated peak pulse current?
The MSMP8.5A-M3/89A has a maximum clamping voltage (VCL) of 14.4 V at its peak pulse current (IPPM) of 10.4 A under 10/1000 μs waveform conditions. This value is measured per the test method in Vishay document 89457 and defines the upper limit of voltage seen by protected circuitry during a specified surge event. The MSMP8.5A-M3/89A maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is the MSMP8.5A-M3/89A suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MSMP8.5A-M3/89A is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 26-Jun-2025 (document 89457). It has passed all stress tests including HBM ESD (>8 kV contact), temperature cycling, and high-temperature operating life. The "M3" suffix denotes commercial-grade halogen-free construction, while the HM3 variant adds full AEC-Q101 certification-however, the MSMP8.5A-M3/89A itself carries AEC-Q101 qualification per the primary product family specification.
What is the thermal resistance of the MSMP8.5A-M3/89A when mounted on recommended PCB pads?
When mounted on 6.0 mm × 6.0 mm copper pads per the recommended layout, the MSMP8.5A-M3/89A exhibits a junction-to-mount thermal resistance (RθJM) of 30 °C/W. This value enables effective heat dissipation during repetitive surge events and supports sustained operation at elevated ambient temperatures. The MSMP8.5A-M3/89A also specifies RθJA = 250 °C/W for free-air conditions, confirming its suitability for compact, thermally constrained layouts.
Does the MSMP8.5A-M3/89A have polarity marking, and how is it identified?
Yes, the MSMP8.5A-M3/89A features unidirectional polarity with a visible cathode band on the package surface. As shown in the MicroSMP (DO-219AD) outline drawing, the color band denotes the cathode terminal, which must be connected toward the lower-potential side (e.g., ground) of the protected circuit. This marking is laser-etched or molded and remains legible after reflow soldering, ensuring correct orientation during automated placement and inspection of the MSMP8.5A-M3/89A.
What is the ESD immunity performance of the MSMP8.5A-M3/89A per IEC 61000-4-2?
The MSMP8.5A-M3/89A delivers 15 kV immunity in air discharge mode and 8 kV in contact discharge mode per IEC 61000-4-2, verified per AEC-Q101-001 HBM testing. These values exceed Level 4 requirements and reflect actual device-level performance-not system-level margin. The MSMP8.5A-M3/89A achieves this through optimized junction design and low-parasitic packaging, making it appropriate for direct placement on high-speed signal lines without degrading signal integrity.
MSMP8.5A-M3/89A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AD
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 10.4A
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AD (MicroSMP)
MSMP8.5A-M3/89A FAQ
1.How can I place an order for MSMP8.5A-M3/89A through Aetrix?
Please submit a Request for Quotation (RFQ) for MSMP8.5A-M3/89A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSMP8.5A-M3/89A reliable?
The price and inventory of MSMP8.5A-M3/89A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSMP8.5A-M3/89A is usually 5 days.
3.What payment methods are accepted for MSMP8.5A-M3/89A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSMP8.5A-M3/89A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSMP8.5A-M3/89A?
MSMP8.5A-M3/89A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSMP8.5A-M3/89A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSMP8.5A-M3/89A?
For technical support, including MSMP8.5A-M3/89A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSMP8.5A-M3/89A requirements.
6.How does Aetrix verify that MSMP8.5A-M3/89A is sourced from the original manufacturer or authorized distributors?
All MSMP8.5A-M3/89A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSMP8.5A-M3/89A meets industry standards.
7.What is the process for return or replacement of MSMP8.5A-M3/89A?
All MSMP8.5A-M3/89A units undergo pre-shipment inspection (PSI). If there is an issue with MSMP8.5A-M3/89A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSMP8.5A-M3/89A part is unused and in its original packaging.
Return procedure for MSMP8.5A-M3/89A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSMP8.5A-M3/89A Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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