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Vishay General Semiconductor - Diodes Division SM15T220AHE3/57T
- Part No.:
- SM15T220AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220AHE3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,423
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Product details
Overview
SM15T220AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 220 V breakdown voltage (VBR = 209–231 V), 188 V stand-off voltage (VWM), 328 V clamping voltage at 4.6 A peak pulse current, and 1500 W peak pulse power with 10/1000 μs waveform. It protects power rails and I/O lines in automotive ECUs against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T220AHE3/57T datasheet, SM15T220AHE3/57T pinout, SM15T220AHE3/57T application, or SM15T220AHE3/57T equivalent, key selection criteria include verified clamping performance at rated IPPM, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode designed to clamp transient overvoltages before they damage downstream circuitry. Its low-inductance SMC package and glass-passivated junction enable fast response (<1 ns) and stable breakdown behavior under repetitive surge stress.
It is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 (260 °C peak reflow). The cathode band denotes polarity, and its failure mode under overstress is a short circuit - a critical safety feature for fault-tolerant protection schemes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - ensures reliable avalanche conduction onset above 188 V operating rail without premature leakage |
| VWM | 188 V - maximum continuous reverse voltage the device blocks without significant leakage (<1 μA) |
| VC @ IPPM | 328 V @ 4.6 A (10/1000 μs) - clamping voltage defines worst-case stress imposed on protected IC during surge |
| PPPM | 1500 W - peak transient energy handling capacity compatible with IEC 61000-4-5 Level 4 surge testing |
| RθJA | 75 °C/W - thermal resistance determines derating needed for sustained power dissipation in PCB layout |
| TJ max | 150 °C - enables operation in under-hood automotive environments without thermal shutdown |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMC (DO-214AB), molded in UL 94 V-0 compound, matte tin-plated leads, 0.305" × 0.320" footprint (7.75 mm × 8.13 mm), cathode band marked on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; forms current path during reverse-biased clamping |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 24 V supply); band-marked end accepts positive surge relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in industrial and automotive power inputs |
| Glass-passivated chip junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and life cycles |
| Low-inductance SMC package | Minimizes voltage overshoot during fast-rising transients (e.g., <100 ns edges from relay switching) |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without popcorn cracking or delamination risk |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed microcontroller power supplies in engine control units against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges within 1 ns to limit stress on LDOs and MCU VDD pins. Use Value: With VC = 328 V at 4.6 A, it holds downstream 3.3 V/5 V regulators within safe SOA during ISO 16750-2 pulse 5a/b events. | Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring induced by motor contactor switching. IC Role / Device Role / Timing Role: Front-end transient suppressor on 0–10 V or 4–20 mA signal lines, mounted adjacent to connector entry point. Use Value: 1500 W rating absorbs multi-kA 10/1000 μs surges common in factory-floor environments without degradation over 1000+ events. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
Use Scenario: Clamping induced surges on -48 V telecom rectifier outputs feeding base station backplane power distribution. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-line, anode-to-ground, providing primary overvoltage defense before secondary filtering. Use Value: VWM = 188 V allows use on -48 V systems with wide input range while maintaining <1 μA leakage at full operating temperature. | Use Scenario: Protecting gate driver supply rails in solar inverter half-bridge modules from cross-talk and shoot-through induced spikes. IC Role / Device Role / Timing Role: Local clamping device on isolated 15 V gate bias rails, placed near high-side driver ICs. Use Value: RθJA = 75 °C/W and TJ max = 150 °C support reliable operation in sealed inverter enclosures with ambient up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A-E3/57T | Lower peak power (400 W), same VBR range, SMA package (smaller footprint, higher RθJA) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD or local switching noise | Select when board space is constrained and surge threat level is ≤ Level 2; verify thermal margin with RθJA = 110 °C/W |
| SMCJ220AHE3/57T | Same SMC package and AEC-Q101 qualification, but 3000 W rating (dual-die construction), higher IPPM (8.2 A) | Overqualified for most 24 V/48 V systems; adds cost and layout overhead without benefit unless facing repeated lightning surges | Select only if system-level testing requires >1500 W margin or dual-die redundancy is mandated for functional safety (e.g., ASIL-B) |
Compared with SMAJ220A-E3/57T and SMCJ220AHE3/57T, SM15T220AHE3/57T delivers optimal balance of automotive qualification, 1500 W surge capacity, and thermal performance in standard SMC layout - making it the default choice for cost-sensitive, high-reliability 24–48 V power rail protection.
Availability
SM15T220AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom DC power feeds, and renewable energy inverter control requiring stable component supply and AEC-Q101 compliance.
Supply support for SM15T220AHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against lightning, load dump, and inductive switching is mandatory.
FAQ
What is the clamping voltage of SM15T220AHE3/57T at its rated peak pulse current?
The SM15T220AHE3/57T has a maximum clamping voltage (VC) of 328 V at 4.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. It is confirmed in the Electrical Characteristics table on page 2 of the datasheet.
Is SM15T220AHE3/57T qualified for automotive applications?
Yes, SM15T220AHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and chassis-mounted automotive electronics per the SM15T Series specification sheet.
What does the "57T" in SM15T220AHE3/57T signify?
The "57T" suffix denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel, with a base quantity of 850 units per reel. This format supports automated SMT placement and is specified in the Ordering Information table on page 2 of Vishay document 88380 for the SM15T Series.
How does the thermal resistance of SM15T220AHE3/57T affect PCB layout?
With a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, SM15T220AHE3/57T requires adequate copper pour on both anode and cathode pads - specifically 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal as defined in the datasheet - to maintain junction temperature below 150 °C during repetitive surge events or elevated ambient conditions.
Can SM15T220AHE3/57T be used in bidirectional configurations?
No, SM15T220AHE3/57T is a unidirectional TVS, as confirmed by its "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SM15T220CA), which uses symmetrical breakdown in both polarities and carries no polarity marking. Using SM15T220AHE3/57T in reverse-biased AC applications risks permanent conduction or failure.
SM15T220AHE3/57T 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T220AHE3/57T FAQ
1.How can I place an order for SM15T220AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220AHE3/57T 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 SM15T220AHE3/57T reliable?
The price and inventory of SM15T220AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220AHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T220AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220AHE3/57T?
SM15T220AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220AHE3/57T 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 SM15T220AHE3/57T?
For technical support, including SM15T220AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220AHE3/57T requirements.
6.How does Aetrix verify that SM15T220AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T220AHE3/57T 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 SM15T220AHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T220AHE3/57T?
All SM15T220AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220AHE3/57T, 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 SM15T220AHE3/57T part is unused and in its original packaging.
Return procedure for SM15T220AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220AHE3/57T Tags
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