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Vishay General Semiconductor - Diodes Division SM15T220AHM3/H
- Part No.:
- SM15T220AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220AHM3/H.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,906
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Product details
Overview
SM15T220AHM3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 220 V breakdown voltage (VBR = 209–231 V), 1500 W peak pulse power (10/1000 μs), 328 V maximum clamping voltage at 4.6 A IPPM, and −65 °C to +150 °C operating junction temperature. It protects automotive-grade I/O lines and power rails against lightning-induced surges and inductive switching transients.
For engineers reviewing the SM15T220AHM3/H datasheet, SM15T220AHM3/H pinout, SM15T220AHM3/H application, or SM15T220AHM3/H equivalent, key selection criteria include verified clamping performance at 4.6 A IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and SMC package thermal resistance (RθJL = 15 °C/W).
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, designed to clamp transient overvoltages before they damage downstream ICs or MOSFETs. Its low-inductance SMC package and 1500 W surge capability support robust protection in high-impedance source environments typical of automotive sensor interfaces and industrial control inputs.
Clamping behavior is defined by a 10/1000 μs waveform test condition, with failure mode specified as short-circuit under overstress. The device meets MSL level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - ensures reliable avalanche conduction onset above 188 V stand-off without premature triggering |
| VC @ IPPM | 328 V at 4.6 A - defines worst-case voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 1500 W - sustains single-event lightning surges per IEC 61000-4-5 Level 4 (4 kV) |
| RθJL | 15 °C/W - enables effective heat transfer to PCB copper pads without external heatsink |
| TJ max | +150 °C - supports operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 8.13 mm footprint and 3.20 mm height |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
SM15T220AHM3/H uses the standard SMC (DO-214AB) package: molded plastic body with matte tin-plated leads, cathode indicated by a band on the case. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per Vishay's recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to protected line; conducts when transient exceeds VBR relative to anode |
| Anode (unbanded end) | Cathode of internal avalanche junction | Typically tied to ground or lower-potential rail; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 4 kV surge events without derating at board-level impedance |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| AEC-Q101 qualified (HM3 suffix) | Validates suitability for automotive applications including engine control, ADAS sensors, and infotainment I/O |
| Halogen-free, RoHS-compliant | Meets automotive OEM material restrictions and supports environmentally compliant manufacturing |
| Low inductance SMC package | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp positive-going surges above 188 V. Use Value: Limits voltage to ≤328 V during 4.6 A surge, preventing latch-up or gate oxide rupture in connected transceivers. | Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel, absorbing repetitive 1500 W pulses without degradation. Use Value: Maintains system uptime by eliminating false triggers and component failures caused by >1 kV switching transients. |
| Telecom Power Line Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding AC/DC adapter outputs and PoE-powered Ethernet ports from lightning-induced surges entering via building wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output rails, coordinated with upstream MOVs. Use Value: Achieves <100 ns response time and holds clamping voltage below 330 V, preserving downstream DC-DC converter ICs. | Use Scenario: Protecting microcontroller GPIOs and half-bridge drivers in washing machine motor control boards from back-EMF spikes during brushless motor commutation. IC Role / Device Role / Timing Role: Localized TVS on gate drive and feedback signal paths, mounted adjacent to protected ICs. Use Value: Prevents MCU reset or driver latch-up by limiting transient energy to <150 mJ per event at 10/1000 μs. |
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 | 600 W PPPM, SMA package, non-AEC-Q101, VC = 356 V @ 3.4 A | Lower surge rating; suitable only for consumer-grade, non-automotive use | Select if cost-sensitive and surge threat is limited to IEC 61000-4-4 EFT only |
| SMCJ220AHE3_A/H | 1500 W PPPM, same SMC package, AEC-Q101 qualified, but not halogen-free | Same automotive qualification but lacks halogen-free compliance required by Tier 1 OEMs | Select if halogen content is not restricted in target program |
Compared with SM15T220AHM3/H, SMAJ220A-E3/57T offers lower surge immunity and no automotive qualification, while SMCJ220AHE3_A/H matches power and qualification but fails halogen-free requirements-making SM15T220AHM3/H the sole option meeting full Tier 1 automotive material and reliability specs.
Availability
SM15T220AHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and telecom power line protection requiring stable component supply across multi-year production cycles.
Supply support for SM15T220AHM3/H 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with global manufacturing and testing facilities supporting automotive, industrial, and computing markets.
The SM15T Series is engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 qualification, halogen-free compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SM15T220AHM3/H at its rated peak pulse current?
The SM15T220AHM3/H has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current of 4.6 A using the standard 10/1000 μs waveform. This value is measured under specified test conditions per Vishay Document 88380 and defines the upper voltage limit imposed on protected circuits during surge events.
Is SM15T220AHM3/H qualified for automotive applications?
Yes, SM15T220AHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in Vishay's SM15T Series datasheet (Rev. 09-Jan-2024, Doc. #88380). This qualification covers stress tests including high-temperature reverse bias, high-temperature operating life, and temperature cycling-validating its use in automotive powertrain, body, and ADAS systems.
What does the "HM3" suffix indicate in SM15T220AHM3/H?
The "HM3" suffix in SM15T220AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from "E3" (RoHS commercial), "M3" (halogen-free commercial), and "HE3" (RoHS + AEC-Q101), confirming full compliance with automotive Tier 1 material restrictions and reliability standards.
Can SM15T220AHM3/H be used in bidirectional configurations?
No, SM15T220AHM3/H is a unidirectional TVS diode, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SM15T220CA), which provides symmetrical clamping in both polarities and lacks polarity marking on the package.
What is the thermal resistance from junction to lead (RθJL) for SM15T220AHM3/H?
The SM15T220AHM3/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as published in the Thermal Characteristics table of Vishay's SM15T Series datasheet. This value enables efficient heat dissipation into PCB copper pads without requiring additional heatsinking in most automotive and industrial layouts.
SM15T220AHM3/H 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 (SMC)
SM15T220AHM3/H FAQ
1.How can I place an order for SM15T220AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220AHM3/H 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 SM15T220AHM3/H reliable?
The price and inventory of SM15T220AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220AHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T220AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220AHM3/H?
SM15T220AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220AHM3/H 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 SM15T220AHM3/H?
For technical support, including SM15T220AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220AHM3/H requirements.
6.How does Aetrix verify that SM15T220AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T220AHM3/H 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 SM15T220AHM3/H meets industry standards.
7.What is the process for return or replacement of SM15T220AHM3/H?
All SM15T220AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220AHM3/H, 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 SM15T220AHM3/H part is unused and in its original packaging.
Return procedure for SM15T220AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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