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Vishay General Semiconductor - Diodes Division SMP3V3-M3/84A
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- Part No.:
- SMP3V3-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP3V3-M3/84A.pdf
- Description:
- TVS DIODE 3.3VWM 7.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,024
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Product details
Overview
SMP3V3-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the eSMP® Series, designed for clamping voltage transients on low-voltage signal and power lines. It features a 3.3 V stand-off voltage (VWM), 4.10–5.10 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 7.3 V maximum clamping voltage at 54.8 A IPPM, and operates from –55 °C to +150 °C. It protects ICs and MOSFETs in consumer and industrial power rails.
For engineers reviewing the SMP3V3-M3/84A datasheet, SMP3V3-M3/84A pinout, SMP3V3-M3/84A application, or SMP3V3-M3/84A equivalent, key selection criteria include clamping performance at 3.3 V systems, MSL Level 1 reflow compatibility, unidirectional polarity with cathode band marking, and DO-220AA package suitability for high-density automated placement.
Technical Context
This TVS diode uses silicon avalanche junction technology to provide fast response (<1 ns) to transient overvoltages while maintaining low dynamic impedance. Its unidirectional configuration enables protection of DC-biased lines without forward conduction during normal operation.
The device is rated for 40 A non-repetitive surge current (IFSM, 10 ms half-sine), exhibits 2.5 V max forward voltage at 25 A, and achieves thermal resistance of 50 °C/W (junction-to-lead) and 250 °C/W (junction-to-ambient) when mounted on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 3.3 V - Maximum reverse working voltage before clamping begins; matches 3.3 V logic and I/O rail systems. |
| VBR min/max | 4.10 V / 5.10 V - Breakdown occurs within this range at 1.0 mA test current; ensures reliable turn-on above nominal rail. |
| VC @ IPPM | 7.3 V - Clamping voltage at 54.8 A peak pulse current; limits downstream voltage stress during 400 W transients. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 μs waveform; suitable for IEC 61000-4-5 Level 3/4 surge events. |
| IFSM | 40 A - Surge current rating for 10 ms half-sine; supports robustness against repetitive inductive switching events. |
| TJ max | +150 °C - Maximum junction temperature; enables use in thermally constrained industrial and automotive under-hood environments. |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow), 1.0 mm typical height, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during clamping | Connected to protected line; conducts during reverse transient to shunt energy to ground. |
| Cathode | Current exit during clamping | Marked by color band; tied to system ground or lower-potential reference for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.0 mm) | Enables use in ultra-thin portable electronics and space-constrained PCB layouts without compromising thermal pad area. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment interfaces. |
| Low clamping voltage (7.3 V @ 54.8 A) | Provides tighter voltage margin for 3.3 V devices with limited absolute maximum ratings (e.g., microcontrollers, sensors). |
| MSL Level 1 rating | Allows single-pass lead-free reflow without baking or special handling-reduces manufacturing overhead and risk of moisture damage. |
| Unidirectional polarity with cathode band | Prevents accidental reverse installation and ensures correct orientation for DC-biased protection circuits. |
Applications
| USB Power Delivery Interface | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 3.3 V VBUS and CC lines in USB-C PD controllers against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients before they reach the PD controller's analog front-end and level-shifters. Use Value: Maintains 3.3 V rail integrity with 7.3 V clamping, preventing latch-up or permanent damage during ±15 kV contact ESD events. |
Use Scenario: Shields analog output (e.g., 4–20 mA or 0–5 V) lines of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Placed at sensor module connector to divert inductive kickback from solenoid actuation or relay switching. Use Value: Limits transient voltage to ≤7.3 V, preserving ADC input stage reliability and avoiding system-level resets. |
| Automotive Body Control Module (BCM) IO | Consumer IoT Microcontroller Power Rail |
Use Scenario: Guards 3.3 V supply inputs to BCM sub-modules exposed to load-dump and jump-start conditions. IC Role / Device Role / Timing Role: First-line transient suppressor on 3.3 V LDO input, upstream of filtering and regulation stages. Use Value: Withstands 40 A surge (IFSM) and clamps to 7.3 V, enabling robust operation in 12 V vehicle electrical systems. |
Use Scenario: Secures 3.3 V core supply of Wi-Fi/BLE SoCs (e.g., ESP32, nRF52) against board-level ESD and hot-plug spikes. IC Role / Device Role / Timing Role: Mounted adjacent to SoC VDD pin to minimize inductance and maximize clamping speed. Use Value: 1.0 mm height allows co-placement with 0402/0603 passives; 400 W rating covers worst-case hot-swap transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | DO-214AC (SMA) package; higher RθJA (350 °C/W); 600 W PPPM but higher VC (11.2 V) | Less suitable for ultra-thin designs; clamping voltage exceeds safe margin for many 3.3 V ICs | Choose SMAJ3.3A only if higher surge rating outweighs clamping voltage penalty and board height permits SMA footprint. |
| 1.5SMC3.3A | DO-214AB (SMC) package; 1.5 kW PPPM; 12.3 V VC at 123 A; 2.4 mm height | Over-specified for 3.3 V rail protection; excessive height and thermal mass limit high-density routing | Select 1.5SMC3.3A only for legacy SMC-compatible designs where 12.3 V clamping is acceptable and board space allows. |
Compared with SMAJ3.3A and 1.5SMC3.3A, SMP3V3-M3/84A delivers superior voltage margin (7.3 V vs. ≥11.2 V) and minimal profile (1.0 mm) for modern 3.3 V embedded systems-making it optimal where clamping precision and board thickness are critical.
Availability
SMP3V3-M3/84A is available at Aetrix Electronics and suitable for USB-C PD interface protection, industrial sensor signal conditioning, automotive BCM power inputs, and consumer IoT microcontroller supply rails requiring stable component supply and consistent MSL Level 1 compliance.
Supply support for SMP3V3-M3/84A 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, and MOSFETs with emphasis on reliability, power efficiency, and application-specific optimization.
The eSMP® Series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for next-generation compact electronics, particularly targeting 3.3 V and 5 V system-level ESD and surge protection.
FAQ
What is the clamping voltage of SMP3V3-M3/84A at its rated peak pulse current?
The SMP3V3-M3/84A has a maximum clamping voltage (VC) of 7.3 V when subjected to its peak pulse current (IPPM) of 54.8 A using a 10/1000 μs waveform. This value is measured under standardized test conditions with 5.0 mm × 5.0 mm copper pads per terminal and ensures predictable voltage limiting for 3.3 V system components. The SMP3V3-M3/84A maintains this clamping performance across its specified operating temperature range.
Is SMP3V3-M3/84A suitable for lead-free reflow soldering?
Yes, SMP3V3-M3/84A meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering processes without pre-baking. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the M3 suffix confirms passing JESD 201 Class 2 whisker testing. The SMP3V3-M3/84A is qualified for single-pass assembly in high-volume SMT lines.
How does the breakdown voltage tolerance of SMP3V3-M3/84A affect circuit design?
The SMP3V3-M3/84A has a specified VBR range of 4.10 V to 5.10 V at 1.0 mA test current, providing a guaranteed margin above its 3.3 V stand-off voltage (VWM) while ensuring turn-on before damaging overvoltage occurs. This 1.0 V window allows designers to verify that all downstream components tolerate ≥5.10 V transient excursions without false triggering. The SMP3V3-M3/84A's tight VBR distribution supports robust margining in safety-critical 3.3 V applications.
Can SMP3V3-M3/84A be used in bidirectional protection configurations?
No, SMP3V3-M3/84A is a unidirectional TVS diode, identified by its cathode band marking and specified only for reverse-biased transient suppression. It is not rated for bidirectional operation. For symmetrical AC or dual-rail protection, a dedicated bidirectional part such as SMBJ3.3CA must be selected. Using SMP3V3-M3/84A in bidirectional roles risks forward conduction and failure during positive transients.
What is the thermal resistance of SMP3V3-M3/84A, and how does it impact power dissipation?
The SMP3V3-M3/84A has a typical junction-to-lead thermal resistance (RθJL) of 50 °C/W and junction-to-ambient (RθJA) of 250 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. This means that under sustained 1 W dissipation, junction temperature rises ~50 °C above lead temperature-critical for layout decisions. The SMP3V3-M3/84A relies on proper pad copper area to achieve rated 400 W pulse handling; reduced pad size degrades both thermal and surge performance.
SMP3V3-M3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- TransZorb®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 4.1V
- Voltage - Clamping (Max) @ Ipp:
- 7.3V
- Current - Peak Pulse (10/1000µs):
- 54.8A
- Power - Peak Pulse:
- 400W
- 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-220AA (SMP)
SMP3V3-M3/84A FAQ
1.How can I place an order for SMP3V3-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP3V3-M3/84A 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 SMP3V3-M3/84A reliable?
The price and inventory of SMP3V3-M3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP3V3-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP3V3-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP3V3-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP3V3-M3/84A?
SMP3V3-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP3V3-M3/84A 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 SMP3V3-M3/84A?
For technical support, including SMP3V3-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP3V3-M3/84A requirements.
6.How does Aetrix verify that SMP3V3-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP3V3-M3/84A 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 SMP3V3-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP3V3-M3/84A?
All SMP3V3-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP3V3-M3/84A, 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 SMP3V3-M3/84A part is unused and in its original packaging.
Return procedure for SMP3V3-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP3V3-M3/84A Tags
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