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Vishay General Semiconductor - Diodes Division MSMP20A-M3/89A
- Part No.:
- MSMP20A-M3/89A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AD
- Datasheet:
-
MSMP20A-M3/89A.pdf
- Description:
- TVS DIODE 20VWM 32.4VC MICROSMP
- Quantity:
- Payment:
- Shipping:
Inventory:266,867
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Product details
Overview
MSMP20A-M3/89A from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in MicroSMP (DO-219AD) package, with 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR), 150 W peak pulse power (10/1000 μs), and AEC-Q101 qualification. It protects automotive sensor signal lines and MOSFET gates against lightning-induced transients and inductive switching surges.
For engineers reviewing the MSMP20A-M3/89A datasheet, MSMP20A-M3/89A pinout, MSMP20A-M3/89A application, or MSMP20A-M3/89A equivalent, key selection criteria include clamping voltage (32.4 V max at IPPM), junction temperature range (–55 °C to +150 °C), ESD robustness (15 kV air / 8 kV contact), unidirectional polarity, and MicroSMP footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a unidirectional avalanche diode clamp, activated when reverse voltage exceeds VBR (22.2–24.5 V at 1 mA). Its low dynamic resistance (RD = 1.706 Ω) ensures tight clamping during 10/1000 μs transients up to 4.6 A IPPM, limiting voltage overshoot to ≤32.4 V.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing, J-STD-020C MSL Level 1 (260 °C reflow), and IEC 61000-4-2 ESD immunity (>15 kV air, >8 kV contact), with thermal resistance RθJM = 30 °C/W when mounted on 6.0 mm × 6.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 22.2 V / 24.5 V at 1 mA - Ensures reliable turn-on above system operating voltage with margin |
| VCL max | 32.4 V at IPPM - Limits protected circuit voltage during worst-case 10/1000 μs surge |
| PPPM | 150 W (10/1000 μs) - Handles automotive load-dump and ISO 7637-2 pulse 1/2/5a energy levels |
| ESD Rating | 15 kV air / 8 kV contact - Meets IEC 61000-4-2 for board-level ESD protection |
| TJ max | +150 °C - Supports under-hood automotive environments with sustained thermal stress |
| Package | MicroSMP (DO-219AD) - 2.30 mm × 1.10 mm footprint, 0.65 mm height, optimized for space-constrained PCBs |
Pinout & Package
MicroSMP (DO-219AD) is a two-terminal surface-mount package with cathode denoted by a color band. Anode and cathode terminals are located on opposite ends of the rectangular body; no internal leads or exposed die pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path for clamped surge current; must be routed with low-inductance connection to GND plane |
| Cathode | Current exit terminal during reverse-bias clamping; connected to protected line (e.g., sensor output) | Accepts transient overvoltage; color band identifies polarity to prevent misorientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.65 mm typical height) | Enables use in ultra-thin modules (e.g., ADAS camera housings, compact ECUs) without mechanical interference |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment systems |
| Oxide planar chip junction | Delivers stable, repeatable VBR and low leakage (<1 μA at VWM) across temperature and lifetime |
| Matte tin-plated terminals | Ensures solderability per J-STD-002 and JESD 22-B102, with whisker resistance per JESD 201 Class 2 |
| UL 94 V-0 molding compound | Meets flammability requirements for enclosed automotive and industrial enclosures |
Applications
| Automotive Sensor Protection | Power Supply Input Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between signal line and ground, responding within nanoseconds to overvoltage events. Use Value: Limits voltage to ≤32.4 V during 10/1000 μs surges, preventing latch-up or damage to 3.3 V/5 V interface ICs while maintaining signal integrity. | Use Scenario: Safeguarding 12 V/24 V automotive power rails feeding microcontrollers and PMICs against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Standoff-rated transient suppressor placed at power entry point, conducting only during overvoltage excursions. Use Value: Absorbs up to 150 W peak pulse energy without degradation, enabling robust front-end protection without series resistors or fuses. |
| MOSFET Gate Protection | Industrial I/O Line Protection |
Use Scenario: Shielding N-channel MOSFET gate drivers in motor control circuits from Miller-induced voltage spikes and cross-talk. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp tied between gate and source, suppressing dv/dt-induced false turn-on. Use Value: Low dynamic resistance (1.706 Ω) ensures rapid clamping below gate oxide breakdown threshold (typically <20 V), preserving MOSFET reliability. | Use Scenario: Hardening RS-485, CAN FD, or digital I/O lines in factory automation PLCs and HMI panels against EFT and surge coupling. IC Role / Device Role / Timing Role: Board-level transient suppressor installed at connector interface, shunting surge energy to chassis or signal ground. Use Value: 15 kV air-gap ESD rating and 150 W pulse handling meet IEC 61000-4-4/5 compliance requirements for industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-E3/5AT | DO-214AC (SMA) package; larger footprint (4.3 mm × 2.6 mm); 150 W PPPM; VBR = 22.2–24.5 V; same VWM/VCL specs | Less suitable for ultra-dense layouts; higher thermal resistance (RθJA ≈ 50 °C/W vs. 250 °C/W for MicroSMP) | Select when legacy SMA footprint compatibility or higher single-pulse energy margin is required |
| 1.5SMC20AHE3/A | DO-214AB (SMC) package; 1500 W PPPM; VBR = 22.2–24.5 V; VCL = 32.4 V; significantly larger (7.1 mm × 6.2 mm) | Over-specified for PCB space-constrained designs; intended for high-energy industrial surge protection | Choose only when system-level surge tests exceed 150 W or require higher Ippm (up to 46.5 A) |
Compared with SMAJ20A-E3/5AT and 1.5SMC20AHE3/A, MSMP20A-M3/89A delivers identical electrical clamping performance in a 65 % smaller footprint and 0.65 mm profile, making it optimal for next-generation automotive modules where board area and Z-height are constrained.
Availability
MSMP20A-M3/89A is available at Aetrix Electronics and suitable for automotive sensor protection, power supply input clamping, and MOSFET gate protection requiring stable component supply, AEC-Q101 compliance, and MicroSMP footprint consistency.
Supply support for MSMP20A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade qualification.
The MSMP20A-M3/89A belongs to Vishay's eSMP® Series of ultra-low-profile TRANSZORB® TVS diodes, engineered specifically for space- and height-sensitive automotive and industrial electronics needing AEC-Q101-compliant transient suppression.
FAQ
What is the maximum clamping voltage of the MSMP20A-M3/89A at its rated peak pulse current?
The MSMP20A-M3/89A has a maximum clamping voltage (VCL) of 32.4 V at its peak pulse current (IPPM) of 4.6 A under a 10/1000 μs waveform. This value is measured per standard test conditions and ensures protected downstream components remain below their absolute maximum voltage ratings during transient events. The MSMP20A-M3/89A achieves this with a dynamic resistance (RD) of 1.706 Ω, calculated using VCL = RD × IPPM + VBR(max).
Is the MSMP20A-M3/89A suitable for automotive applications?
Yes, the MSMP20A-M3/89A is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and ADAS sensor modules. It passes human-body-model ESD testing (>8 kV contact, >15 kV air), operates from –55 °C to +150 °C, and complies with J-STD-020C MSL Level 1 reflow. The MSMP20A-M3/89A also meets IEC 61000-4-2 and supports ISO 7637-2 pulse immunity when properly laid out on PCB.
What does the "M3/89A" suffix indicate in MSMP20A-M3/89A?
The "M3" suffix denotes halogen-free, RoHS-compliant, commercial-grade construction with matte tin-plated terminals meeting JESD 201 Class 2 whisker resistance. The "89A" is the preferred package code specifying 7-inch plastic tape-and-reel delivery with 4500 units per reel. This distinguishes MSMP20A-M3/89A from the AEC-Q101-qualified HM3 variant (e.g., MSMP20AHM3/H), which uses the "H" package code.
How does the MicroSMP (DO-219AD) package of the MSMP20A-M3/89A compare thermally to larger packages?
The MSMP20A-M3/89A in MicroSMP offers RθJM = 30 °C/W when mounted on 6.0 mm × 6.0 mm copper pads, enabling efficient heat transfer to the PCB. While its RθJA is 250 °C/W (reflecting low mass), actual thermal performance depends on layout: minimum recommended pad area yields adequate derating for 150 W pulses. The MSMP20A-M3/89A achieves this in 2.30 mm × 1.10 mm - significantly smaller than SMA or SMC alternatives without sacrificing pulse-handling capability.
Can the MSMP20A-M3/89A be used in bidirectional configurations?
No, the MSMP20A-M3/89A is unidirectional only, as confirmed in the Vishay datasheet features and electrical characteristics table. It conducts in reverse bias above VBR and blocks up to VWM = 20 V in forward direction. For bidirectional protection, a separate device such as the SMBJ20CA or an anti-parallel pair would be required. The MSMP20A-M3/89A's cathode band marking and specified polarity preclude symmetrical operation.
MSMP20A-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- 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)
MSMP20A-M3/89A FAQ
1.How can I place an order for MSMP20A-M3/89A through Aetrix?
Please submit a Request for Quotation (RFQ) for MSMP20A-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 MSMP20A-M3/89A reliable?
The price and inventory of MSMP20A-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 MSMP20A-M3/89A is usually 5 days.
3.What payment methods are accepted for MSMP20A-M3/89A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSMP20A-M3/89A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSMP20A-M3/89A?
MSMP20A-M3/89A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSMP20A-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 MSMP20A-M3/89A?
For technical support, including MSMP20A-M3/89A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSMP20A-M3/89A requirements.
6.How does Aetrix verify that MSMP20A-M3/89A is sourced from the original manufacturer or authorized distributors?
All MSMP20A-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 MSMP20A-M3/89A meets industry standards.
7.What is the process for return or replacement of MSMP20A-M3/89A?
All MSMP20A-M3/89A units undergo pre-shipment inspection (PSI). If there is an issue with MSMP20A-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 MSMP20A-M3/89A part is unused and in its original packaging.
Return procedure for MSMP20A-M3/89A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSMP20A-M3/89A Tags
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