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Vishay General Semiconductor - Diodes Division SMP36A-M3/84A
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- Part No.:
- SMP36A-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP36A-M3/84A.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,880
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Product details
Overview
SMP36A-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 power and signal lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 6.9 A peak pulse current (IPPM), and clamps to 58.1 V at rated surge. It protects MOSFETs and ICs in industrial power supplies and sensor interfaces.
For engineers reviewing the SMP36A-M3/84A datasheet, SMP36A-M3/84A pinout, SMP36A-M3/84A application, or SMP36A-M3/84A equivalent, key selection criteria include unidirectional polarity, DO-220AA package compatibility, 150 °C max junction temperature, low-profile 1.0 mm height, and MSL Level 1 reflow capability up to 260 °C.
Technical Context
The SMP36A-M3/84A operates as a silicon avalanche diode with fast response time and low incremental surge resistance, enabling effective suppression of inductive switching spikes and ESD events. Its unidirectional configuration provides reverse-biased clamping only, with cathode marked by a band and anode as the unmarked terminal.
Thermal performance is defined by RθJL = 50 °C/W and RθJA = 250 °C/W, requiring PCB copper pad areas of 5.0 mm × 5.0 mm per terminal for rated 400 W pulse handling. It meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 40.0 V / 44.2 V - breakdown occurs within this range at 1 mA test current |
| PPPM | 400 W - peak transient power it can absorb under 10/1000 μs waveform |
| IPPM | 6.9 A - peak surge current corresponding to clamping at 58.1 V |
| VC | 58.1 V - maximum clamped voltage across device during rated IPPM |
| TJ max | +150 °C - maximum junction temperature for reliable long-term operation |
| Package | SMP (DO-220AA) - ultra-low-profile 2-terminal SMD package, 1.0 mm typical height |
Pinout & Package
Package: SMP (DO-220AA), molded surface-mount case with matte tin-plated leads, halogen-free and RoHS-compliant (M3 suffix), polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts when reverse voltage exceeds VWM |
| Anode (unbanded end) | Reference/return path | Typically tied to ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.0 mm typical height) | Enables use in space-constrained layouts such as portable electronics and dense PCBs |
| 400 W peak pulse power (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 3/4 surges in industrial environments |
| MSL Level 1, 260 °C peak reflow | Allows single-pass lead-free reflow without moisture-related damage or delamination |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump and inductive kickback transients on 24 V DC input rails of PLC modules and motor drivers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp overvoltage before reaching downstream regulators and controllers. Use Value: Limits voltage to ≤58.1 V during 400 W surges, preventing damage to 36 V-rated input stages and ensuring system uptime. | Use Scenario: Shields analog and CAN signal lines in automotive cabin sensors (e.g., temperature, pressure) from ESD and battery dump events. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between signal line and chassis ground to divert transient energy away from precision front-end circuitry. Use Value: Maintains signal integrity with <1.0 μA leakage at 36 V, while responding in picoseconds to sub-100 ns transients. |
| Consumer Device USB Port Protection | Telecom Equipment AC-DC Adapter Input |
Use Scenario: Protects VBUS and D+/D− lines in USB-C ports of laptops and docking stations from hot-plug and ESD events. IC Role / Device Role / Timing Role: Discrete unidirectional TVS array element used per line, leveraging low capacitance and fast response. Use Value: Provides 58.1 V clamping with minimal parasitic loading-critical for high-speed USB 2.0/3.x signaling integrity. | Use Scenario: Guards primary-side rectifier outputs in telecom AC-DC adapters against lightning-induced surges on mains-derived DC bus. IC Role / Device Role / Timing Role: Primary-side transient suppressor placed after bridge rectifier and before bulk capacitor. Use Value: Handles repetitive 400 W pulses without degradation, supporting EN 61000-4-5 compliance with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP36A-M3/85A | Same electrical specs; differs only in packaging-10,000-piece 13" tape-and-reel vs. 3,000-piece 7" reel | No functional difference; suited for high-volume automated assembly requiring larger reels | Select based on production volume and pick-and-place feeder compatibility |
| SMBJ36A-E3/52 | Higher RθJA (300 °C/W), larger SMB (DO-214AA) package (2.3 mm height), 600 W PPPM rating | Better power handling but less space-efficient; requires larger PCB footprint and thermal relief | Choose when higher surge margin is needed and board height allows ≥2.3 mm clearance |
Compared with SMP36A-M3/84A, the /85A variant offers identical protection performance in larger reel format, while SMBJ36A-E3/52 trades compactness for higher pulse power and relaxed thermal constraints-making it suitable where layout space permits and surge severity exceeds 400 W.
Availability
SMP36A-M3/84A is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, and telecom AC-DC adapters requiring stable component supply and consistent M3-grade reliability.
Supply support for SMP36A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The eSMP® Series-including SMP36A-M3/84A-is engineered for high-density surface-mount transient suppression in space- and thermally constrained systems, targeting industrial, automotive, and communications infrastructure.
FAQ
What is the maximum clamping voltage of the SMP36A-M3/84A under rated surge conditions?
The SMP36A-M3/84A clamps to a maximum of 58.1 V when subjected to its rated peak pulse current (IPPM) of 6.9 A, measured using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table of the Vishay datasheet (Doc. #88481, Rev. 25-Apr-2022) and defines the upper voltage limit seen by downstream circuitry during transient events. The SMP36A-M3/84A maintains this clamping performance across its full operating temperature range.
Is the SMP36A-M3/84A suitable for bidirectional transient protection?
No, the SMP36A-M3/84A is a unidirectional TVS diode, meaning it clamps only in reverse bias and conducts like a standard diode in forward bias. It is not rated for symmetrical (bidirectional) surge suppression. For bidirectional applications, a dedicated bidirectional part such as SMBJ36CA or equivalent must be selected. The SMP36A-M3/84A datasheet explicitly lists polarity as "Unidirectional" and marks the cathode with a band.
What does the "M3/84A" suffix indicate in SMP36A-M3/84A?
The "M3" suffix denotes halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance, while "84A" specifies the preferred packaging: 3,000-piece 7-inch plastic tape-and-reel format. This ordering code ensures traceable, industrial-grade sourcing. The SMP36A-M3/84A is distinct from SMP36A-M3/85A (10,000-piece 13" reel), though both share identical electrical and thermal specifications.
Can SMP36A-M3/84A be used in place of a 36 V Zener diode for voltage regulation?
No-the SMP36A-M3/84A is optimized for transient suppression, not steady-state regulation. Its VWM of 36 V and VBR range of 40.0–44.2 V mean it remains non-conductive below ~40 V and is not intended for continuous conduction. Unlike Zener diodes, it lacks tight tolerance or stable dynamic impedance in regulation mode. The SMP36A-M3/84A should only be used for surge clamping, not DC voltage reference or regulation functions.
What PCB layout guidance applies to SMP36A-M3/84A for optimal thermal and surge performance?
Per Vishay's datasheet, SMP36A-M3/84A requires 5.0 mm × 5.0 mm copper pad areas attached to each terminal to achieve rated 400 W pulse power. Traces should be short and wide to minimize inductance, and thermal vias under pads improve heat dissipation. The DO-220AA package's low 1.0 mm profile demands precise stencil design for solder paste volume control. These guidelines ensure the SMP36A-M3/84A delivers full spec performance without thermal runaway or voltage overshoot.
SMP36A-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
SMP36A-M3/84A FAQ
1.How can I place an order for SMP36A-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP36A-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 SMP36A-M3/84A reliable?
The price and inventory of SMP36A-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 SMP36A-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP36A-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP36A-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP36A-M3/84A?
SMP36A-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP36A-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 SMP36A-M3/84A?
For technical support, including SMP36A-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP36A-M3/84A requirements.
6.How does Aetrix verify that SMP36A-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP36A-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 SMP36A-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP36A-M3/84A?
All SMP36A-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP36A-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 SMP36A-M3/84A part is unused and in its original packaging.
Return procedure for SMP36A-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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