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Vishay General Semiconductor - Diodes Division SMP16-M3/85A
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- Part No.:
- SMP16-M3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP16-M3/85A.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,434
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Product details
Overview
SMP16-M3/85A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, with 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 15.4 A peak pulse current (IPPM), and clamping voltage of 26.0 V at IPPM. It protects MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the SMP16-M3/85A datasheet, SMP16-M3/85A pinout, SMP16-M3/85A application, or SMP16-M3/85A equivalent, key selection criteria include unidirectional polarity, DO-220AA footprint compatibility, 1.0 mm profile for low-height PCB designs, MSL Level 1 rating, and halogen-free RoHS-compliant construction per JESD 201 Class 2 whisker test.
Technical Context
This device operates as a silicon avalanche diode optimized for fast clamping of transient overvoltages. Its 10/1000 μs waveform response delivers 400 W peak pulse power with 26.0 V clamping at 15.4 A, while maintaining low incremental surge resistance and sub-nanosecond response time.
The SMP16-M3/85A uses a unidirectional configuration with cathode marked by a color band, requires no biasing, and is rated for junction temperatures from –55 °C to +150 °C. Thermal resistance is 50 °C/W (junction-to-lead) and 250 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum reverse stand-off voltage before conduction begins; defines operating range for protected circuit |
| VBR min/max | 17.8 V / 19.7 V - breakdown voltage range at 1.0 mA test current; ensures reliable turn-on under surge conditions |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; determines survivability under lightning or ESD-like events |
| IPPM | 15.4 A - peak pulse current at VBR; used with PCB pad thermal design to verify safe energy dissipation |
| VC | 26.0 V - clamping voltage at IPPM; limits maximum voltage seen by downstream IC or MOSFET during transient |
| TJ max | +150 °C - maximum junction temperature; sets thermal derating boundary for continuous operation |
| RθJL | 50 °C/W - junction-to-lead thermal resistance; critical for estimating local heating under repetitive surges |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, 2-terminal, 1.0 mm typical height, matte tin-plated leads, halogen-free, RoHS-compliant, MSL Level 1, 260 °C reflow peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side reference in unidirectional TVS configurations |
| Cathode | Current exit terminal during reverse-biased clamping | Marked with color band; connected to protected line (e.g., power rail or signal) to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.0 mm) | Enables use in space-constrained consumer and portable electronics without compromising board clearance |
| 400 W peak pulse power (10/1000 μs) | Provides robust protection against IEC 61000-4-5 Level 3/4 surges in industrial control interfaces |
| MSL Level 1 rating | Allows direct placement into high-volume SMT lines without dry-pack or baking requirements |
| Halogen-free, RoHS-compliant, JESD 201 Class 2 | Meets global environmental compliance and long-term reliability standards for automotive and industrial end equipment |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on protected devices compared to higher-ratio suppressors |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontrollers from inductive kickback during relay or solenoid switching in PLC output stages. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients below MOSFET VDS rating. Use Value: Limits voltage overshoot to ≤26.0 V during 15.4 A surges, preventing gate oxide damage and latch-up in 3.3 V/5 V logic interfaces. | Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated protector on 12 V supply inputs to preserve signal integrity and prevent MCU reset during battery transients. Use Value: Withstands 400 W pulses while maintaining 16 V operational margin-compatible with ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
| Telecom Power Supplies | Consumer USB-C PD Adapters |
Use Scenario: Input-stage protection for AC/DC front-ends subjected to lightning-induced surges on primary-side DC bus lines. IC Role / Device Role / Timing Role: Primary-side TVS across bulk capacitor terminals to absorb energy before it reaches controller ICs. Use Value: 50 °C/W junction-to-lead thermal resistance enables effective heat transfer to copper pads, supporting repeated surge events without thermal runaway. | Use Scenario: Secondary-side overvoltage clamp on 20 V PD output rails to safeguard connected devices during protocol negotiation faults. IC Role / Device Role / Timing Role: Fast-response suppressor tied between VBUS and GND to limit fault voltage during CC line miscommunication. Use Value: 1.0 mm height allows integration beneath compact USB-C connectors without mechanical interference or height violations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP16A-M3/84A | Same electrical specs; differs only in packaging-3000 pcs/reel on 7" tape vs. 10,000 pcs/reel on 13" tape | Identical functional use; selected for smaller batch prototyping or lower inventory turnover | Choose SMP16A-M3/84A when reel size or quantity aligns with SMT line feeder constraints or NPI volume needs |
| SMAJ16A | Same VWM (16 V) and VC (26.0 V), but SMA package (DO-214AC); higher RθJA (350 °C/W), larger footprint (4.3 mm × 2.6 mm) | Less suitable for ultra-thin or high-density layouts; requires larger pad area and different stencil design | Choose SMAJ16A only if legacy SMA footprint reuse is required and 1.0 mm height constraint does not apply |
Compared with SMP16A-M3/84A, SMP16-M3/85A offers identical protection performance with optimized logistics for high-volume production; versus SMAJ16A, it delivers same clamping performance in 40 % less board area and 60 % lower profile-critical for modern slim-profile power adapters and embedded controllers.
Availability
SMP16-M3/85A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and consumer USB-C PD adapters requiring stable component supply, consistent MSL Level 1 handling, and halogen-free compliance.
Supply support for SMP16-M3/85A 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, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMP series was designed specifically for high-density, low-profile transient protection in automated SMT environments-targeting industrial, automotive, and consumer applications where board space, thermal performance, and process compatibility are critical.
FAQ
What is the exact breakdown voltage range for SMP16-M3/85A?
The SMP16-M3/85A has a specified breakdown voltage (VBR) range of 17.8 V to 19.7 V at 1.0 mA test current, per Vishay Document Number 88481. This range ensures consistent turn-on behavior across production lots and supports reliable clamping in 16 V nominal systems. The SMP16-M3/85A maintains this specification under standard test conditions defined in ANSI/IEEE C62.35.
Does SMP16-M3/85A support automated optical inspection (AOI) after placement?
Yes, the SMP16-M3/85A features a visible cathode band and consistent DO-220AA geometry, enabling reliable AOI detection during post-placement inspection. Its matte tin-plated leads and uniform molding compound meet J-STD-002 solderability standards, ensuring consistent reflectivity and contrast for vision-based verification. The SMP16-M3/85A is widely deployed in high-yield SMT lines with AOI integration.
Can SMP16-M3/85A be used in bidirectional transient protection circuits?
No, SMP16-M3/85A is strictly unidirectional and must not be used in bidirectional configurations. Its internal structure lacks symmetrical avalanche characteristics; using it in AC-coupled or dual-polarity signal lines risks asymmetric clamping and potential failure. For bidirectional protection, select a designated bidirectional part such as SMBJ16CA. The SMP16-M3/85A datasheet explicitly specifies unidirectional polarity only.
What is the recommended PCB pad layout for SMP16-M3/85A to achieve rated PPPM?
To achieve the full 400 W peak pulse power rating, Vishay specifies mounting SMP16-M3/85A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads attached to each terminal. This layout ensures adequate thermal dissipation and current spreading. Deviation from this pad size reduces IPPM capability and may cause localized overheating. The SMP16-M3/85A thermal model assumes this minimum copper area per terminal.
Is SMP16-M3/85A compliant with AEC-Q200 for automotive use?
No, SMP16-M3/85A is not AEC-Q200 qualified. It is an industrial-grade part meeting JESD 201 Class 2 whisker resistance and RoHS/halogen-free requirements, but lacks the extended temperature cycling, humidity testing, and qualification reporting required for automotive grade. For AEC-Q200 applications, consider Vishay's Automotive Qualified SMP series variants-SMP16-M3/85A itself is rated for –55 °C to +150 °C operation but not certified to AEC-Q200.
SMP16-M3/85A 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 13.9A
- 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)
SMP16-M3/85A FAQ
1.How can I place an order for SMP16-M3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP16-M3/85A 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 SMP16-M3/85A reliable?
The price and inventory of SMP16-M3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP16-M3/85A is usually 5 days.
3.What payment methods are accepted for SMP16-M3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP16-M3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP16-M3/85A?
SMP16-M3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP16-M3/85A 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 SMP16-M3/85A?
For technical support, including SMP16-M3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP16-M3/85A requirements.
6.How does Aetrix verify that SMP16-M3/85A is sourced from the original manufacturer or authorized distributors?
All SMP16-M3/85A 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 SMP16-M3/85A meets industry standards.
7.What is the process for return or replacement of SMP16-M3/85A?
All SMP16-M3/85A units undergo pre-shipment inspection (PSI). If there is an issue with SMP16-M3/85A, 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 SMP16-M3/85A part is unused and in its original packaging.
Return procedure for SMP16-M3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP16-M3/85A Tags
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