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Vishay General Semiconductor - Diodes Division SM15T220A-M3/57T
- Part No.:
- SM15T220A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220A-M3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,015
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Product details
Overview
SM15T220A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 328 V clamping voltage at 4.6 A IPPM, and 188 V stand-off voltage - designed to protect MOSFETs, I/O lines, and sensor signal paths in automotive and industrial power electronics against lightning-induced and switching transients.
For engineers reviewing the SM15T220A-M3/57T datasheet, SM15T220A-M3/57T pinout, SM15T220A-M3/57T application, or SM15T220A-M3/57T equivalent, key selection criteria include verified clamping performance at 328 V under 4.6 A transient current, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant - critical for high-reliability board-level surge protection design.
Technical Context
This TVS diode operates as a unidirectional clamp with cathode-banded polarity, leveraging glass-passivated junction technology to achieve low dynamic impedance and fast response (<1 ns) to ESD and surge events. Its thermal resistance (RθJL = 15 °C/W) and 150 °C max junction temperature support sustained operation in thermally constrained SMT layouts.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements when applied with proper PCB pad design (8.0 mm × 8.0 mm copper per terminal). It exhibits no significant capacitance impact on high-speed signal lines due to its inherently low junction capacitance (<26 pF at VR = 188 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single-event lightning surges without degradation when mounted on recommended 8.0 mm × 8.0 mm copper pads |
| Stand-off Voltage (VWM) | 188 V - maximum continuous reverse voltage before leakage exceeds 1 μA; sets upper limit for protected circuit DC bias |
| Breakdown Voltage (VBR) | 209–231 V at 1 mA - defines onset of avalanche conduction; ensures reliable triggering above normal operating voltage |
| Clamping Voltage (VC) | 328 V at 4.6 A IPPM - actual voltage seen by downstream IC during worst-case transient; determines required system overvoltage margin |
| Peak Pulse Current (IPPM) | 4.6 A (10/1000 μs) - maximum non-repetitive surge current the device safely clamps without failure |
| Junction Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments with wide thermal cycling |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place |
Pinout & Package
SM15T220A-M3/57T uses the SMC (DO-214AB) package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, and cathode indicated by a band on the body. Mounting requires minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pad area per terminal for rated PPPM derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or low-impedance return path; completes clamping loop during reverse transient |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 188 V rail or sensor output); conducts avalanche current into anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges on 12–48 V systems without cascaded staging |
| Glass passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of parametric drift in harsh environments |
| Halogen-free, RoHS-compliant (M3) | Meets automotive and industrial environmental compliance mandates without compromising thermal or electrical performance |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes let-through voltage stress on downstream silicon; critical for safeguarding 200 V-rated MOSFETs and gate drivers |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed control modules from load-dump transients and alternator ripple spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp positive-going surges exceeding 188 V. Use Value: Limits peak voltage to 328 V during 4.6 A transients, preventing damage to MCU power regulators and CAN transceivers. |
Use Scenario: Shielding analog input channels of PLC analog I/O cards from inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line to ground, triggered only during >188 V overvoltage events. Use Value: Maintains signal integrity below 188 V while clamping destructive transients within 1 ns - preserving ADC accuracy and isolation barrier integrity. |
| Telecom DC Power Feeds | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC controllers against induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Primary surge suppression stage on 57 V nominal telecom supply rail, upstream of bulk capacitor. Use Value: Absorbs 1500 W pulses without failure, enabling single-stage protection architecture and reducing BOM count vs. multi-TVS solutions. |
Use Scenario: Protecting high-voltage DC link monitoring circuits in solar inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Clamp device across 200 V DC bus sense resistor network to prevent overvoltage damage to isolated amplifiers. Use Value: Withstands 150 °C ambient and clamps at 328 V, ensuring reliability where thermal management is limited and voltage margins are tight. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A-E3/57T (Vishay) | Lower peak power (400 W), same VWM/VBR range, SMA package (smaller thermal mass) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD and local switching noise | Select SM15T220A-M3/57T when 1500 W surge handling is required; SMAJ220A-E3/57T fits space-constrained designs with milder threat profiles. |
| 1.5KE220A (ON Semiconductor) | Through-hole DO-201 package, identical 1500 W rating and 328 V VC, but higher RθJA (100 °C/W) and no MSL-1 rating | Requires wave soldering; unsuitable for fully SMT production or high-reliability automotive reflow processes | Choose SM15T220A-M3/57T for surface-mount assembly, AEC-Q101-readiness, and superior thermal performance in compact layouts. |
Compared with SMAJ220A-E3/57T and 1.5KE220A, SM15T220A-M3/57T delivers equivalent clamping performance in a halogen-free, MSL Level 1 SMC package - enabling higher-power surge protection without through-hole assembly or thermal derating penalties.
Availability
SM15T220A-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, and telecom DC power feeds requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM15T220A-M3/57T 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM15T Series was developed for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering 1500 W surge capability in compact SMC packaging with AEC-Q101 qualification pathways.
FAQ
What is the clamping voltage of SM15T220A-M3/57T at its rated peak pulse current?
The SM15T220A-M3/57T has a maximum clamping voltage (VC) of 328 V when subjected to its specified peak pulse current (IPPM) of 4.6 A under a 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, and it defines the highest voltage imposed on protected circuitry during a worst-case transient event. The SM15T220A-M3/57T maintains this clamping performance across its operational temperature range.
Is SM15T220A-M3/57T suitable for automotive applications?
SM15T220A-M3/57T is halogen-free, RoHS-compliant, and built to Vishay's commercial-grade specifications. While the base M3 version is not AEC-Q101 qualified, the HM3 variant (e.g., SM15T220AHM3_A/H) carries full AEC-Q101 qualification. Engineers specifying SM15T220A-M3/57T for automotive use must verify system-level compliance requirements and consider upgrading to the HM3 suffix if formal qualification is mandated. The SM15T220A-M3/57T shares identical electrical and thermal characteristics with its qualified counterpart.
What does the "M3" suffix indicate in SM15T220A-M3/57T?
The "M3" suffix in SM15T220A-M3/57T denotes halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating per JESD 201 Class 2. It also signifies compliance with Vishay's commercial-grade reliability standards and MSL Level 1 moisture sensitivity (peak reflow temperature 260 °C). This distinguishes it from the "E3" (RoHS-compliant, non-halogen-free) and "HM3" (AEC-Q101 qualified + halogen-free) variants. The SM15T220A-M3/57T meets stringent environmental and process requirements for modern SMT manufacturing.
How does SM15T220A-M3/57T compare to bidirectional TVS diodes?
SM15T220A-M3/57T is unidirectional and features a cathode band for polarity identification; it protects against positive transients only when oriented with cathode toward the protected line. Bidirectional variants (e.g., SM15T220CA-M3/57T) suppress surges of either polarity but exhibit higher leakage and slightly reduced clamping efficiency. The SM15T220A-M3/57T is preferred in DC systems with defined polarity - such as 24 V automotive rails - where its lower leakage (<1 μA at 188 V) and tighter VBR tolerance improve baseline system stability.
What PCB layout guidelines apply to SM15T220A-M3/57T for optimal surge performance?
To achieve rated 1500 W peak pulse power, SM15T220A-M3/57T must be mounted on minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, with short, wide traces to minimize inductance. Thermal vias under pads are recommended for high-duty-cycle applications. Avoid routing sensitive signals near the device body. The SM15T220A-M3/57T benefits from symmetric layout to ensure balanced current sharing and reduce parasitic inductance that could elevate clamping voltage during fast transients.
SM15T220A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T220A-M3/57T FAQ
1.How can I place an order for SM15T220A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220A-M3/57T 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 SM15T220A-M3/57T reliable?
The price and inventory of SM15T220A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220A-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T220A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220A-M3/57T?
SM15T220A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220A-M3/57T 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 SM15T220A-M3/57T?
For technical support, including SM15T220A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220A-M3/57T requirements.
6.How does Aetrix verify that SM15T220A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T220A-M3/57T 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 SM15T220A-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T220A-M3/57T?
All SM15T220A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220A-M3/57T, 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 SM15T220A-M3/57T part is unused and in its original packaging.
Return procedure for SM15T220A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220A-M3/57T Tags
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