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Vishay General Semiconductor - Diodes Division SM15T220A-E3/9AT
- Part No.:
- SM15T220A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220A-E3/9AT.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,833
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Product details
Overview
SM15T220A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, with 220 V breakdown voltage (VBR = 209–231 V), 188 V stand-off voltage (VWM), 328 V clamping voltage (VC) at 4.6 A peak pulse current, and 1500 W peak pulse power rating (10/1000 μs). It protects MOSFETs and signal lines in automotive powertrain control units against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T220A-E3/9AT datasheet, SM15T220A-E3/9AT pinout, SM15T220A-E3/9AT application, or SM15T220A-E3/9AT equivalent, this page delivers verified electrical parameters, thermal resistance (RθJA = 75 °C/W), polarity marking (cathode band), RoHS-compliant commercial-grade construction, and AEC-Q101-qualified alternatives for automotive design validation.
Technical Context
The SM15T220A-E3/9AT employs a glass-passivated silicon junction optimized for high-energy transient suppression. Its low-inductance SMC package enables fast response to 10/1000 μs waveforms while maintaining clamping stability up to 150 °C junction temperature.
Designed for unidirectional operation, it features a cathode-band polarity indicator and meets J-STD-020 MSL Level 1 (260 °C reflow peak). The device fails short-circuit under overstress-ensuring downstream circuit protection integrity without open-circuit risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - Ensures reliable conduction onset above 188 V operating voltage, preventing false triggering during normal transients. |
| VWM | 188 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines safe operating margin for 200 V nominal systems. |
| VC @ IPPM | 328 V at 4.6 A - Clamps induced surges below 330 V, protecting 300 V-rated MOSFETs and gate drivers in DC-link applications. |
| PPPM | 1500 W (10/1000 μs) - Handles lightning-surge energy per IEC 61000-4-5 Level 4 without degradation when mounted on 8 mm × 8 mm copper pads. |
| RθJA | 75 °C/W - Enables thermal management in compact automotive ECUs with limited heatsinking; derates linearly above 25 °C ambient. |
| TJ max | 150 °C - Supports under-hood deployment in engine control modules where ambient reaches 125 °C and power dissipation is 6.5 W. |
Pinout & Package
Package: SMC (DO-214AB), molded UL 94 V-0 compound, matte tin-plated leads solderable per J-STD-002. Cathode identified by black band on case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Completes conduction path during transient events; must be routed with minimal trace inductance to avoid voltage overshoot. |
| Cathode | Current exit point in forward bias; marked with black band | Connected to protected line (e.g., 200 V DC bus); polarity error prevents clamping and risks catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge tests on 2 Ω source impedance without parameter shift or visual damage. |
| Glass-passivated junction | Eliminates moisture ingress risk and ensures stable VBR over 1000 thermal cycles (−40 °C to +150 °C). |
| Low-inductance SMC package | Reduces parasitic L to < 10 nH, limiting di/dt-induced overshoot during 100 A/μs transients in motor drive inverters. |
| AEC-Q101 qualification option | HE3 suffix variants undergo stress testing per automotive reliability standard, including HTGB, HTRB, and TCT. |
Applications
| Automotive Powertrain Control | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting IGBT gate drivers and bootstrap circuits in 200 V electric power steering (EPS) modules from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes on high-side driver supply rails during MOSFET turn-off. Use Value: Limits voltage excursion to ≤328 V, preserving 300 V-rated gate oxide integrity and enabling >100,000 cycle reliability per ISO 16750-2. |
Use Scenario: Safeguarding 200 V DC-link voltage sensing nodes in servo drives exposed to regenerative braking surges. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed directly across shunt resistor inputs to prevent ADC saturation. Use Value: Maintains measurement accuracy by clamping within 1 ns, avoiding 12-bit ADC input clipping during 500 V/μs transients. |
| Telecom Power Supply Input | Renewable Energy Inverter Interface |
|
Use Scenario: Shielding 200 V telecom rectifier outputs from lightning-induced surges entering via AC mains or Ethernet ports. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output, coordinated with upstream MOVs for staged energy absorption. Use Value: Absorbs 1500 W peak energy without thermal runaway, reducing need for oversized heatsinks in space-constrained 1U chassis. |
Use Scenario: Protecting string-monitoring ICs in solar microinverters connected to 220 V PV arrays subject to partial shading transients. IC Role / Device Role / Timing Role: Bidirectional-capable variant (SM15T220CA) used in differential voltage monitoring paths; unidirectional SM15T220A-E3/9AT applied to single-ended rail references. Use Value: Enables ±1% voltage monitoring accuracy over 25-year field life by suppressing >100 V transients that would otherwise trigger false fault shutdowns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A-E3/52T (Vishay) | Lower PPPM (600 W), same VBR/VWM, SMB package (smaller footprint, higher RθJA = 100 °C/W) | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for 4 kV lightning test compliance. | Select when board space is constrained and surge threat level is ≤1 kV; verify thermal margin at 125 °C ambient. |
| SM15T220AHM3_A/I (Vishay) | Identical electrical specs; halogen-free, RoHS-compliant, AEC-Q101 qualified; same SMC package, 13" reel (I code) | Required for automotive production programs needing PPAP documentation and extended reliability validation. | Choose for Tier-1 automotive designs requiring full AEC-Q101 certification and halogen-free compliance; no layout change needed. |
Compared with SMBJ220A-E3/52T, SM15T220A-E3/9AT delivers 2.5× higher surge immunity and better thermal performance; versus SM15T220AHM3_A/I, it trades AEC-Q101 qualification for lower cost and faster lead time in commercial industrial applications.
Availability
SM15T220A-E3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive DC bus protection, and telecom power supply input requiring stable component supply across multi-year production cycles.
Supply support for SM15T220A-E3/9AT 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 transient protection devices with emphasis on high-reliability, high-power, and automotive-grade solutions.
The SM15T Series was engineered for robust, high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where failure modes must be predictable and fail-safe.
FAQ
What is the clamping voltage of SM15T220A-E3/9AT at its rated peak pulse current?
The SM15T220A-E3/9AT has a maximum clamping voltage (VC) of 328 V at 4.6 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T220A-E3/9AT suitable for automotive applications?
SM15T220A-E3/9AT is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. For automotive use, specify SM15T220AHM3_A/I or SM15T220AHE3_A/I-identical electrical specs with full AEC-Q101 qualification, halogen-free construction, and PPAP-ready documentation. SM15T220A-E3/9AT itself is intended for industrial and telecom applications.
What does the "E3/9AT" suffix mean in SM15T220A-E3/9AT?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads. "9AT" denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units per reel. This format supports high-volume automated SMT placement and is compatible with standard pick-and-place equipment.
How does SM15T220A-E3/9AT differ from bidirectional TVS diodes like SM15T220CA?
SM15T220A-E3/9AT is unidirectional and features a cathode band for polarity-sensitive placement; it conducts only in reverse breakdown. SM15T220CA is bidirectional, lacks polarity marking, and clamps transients of either polarity-used where AC-coupled or differential signal lines require symmetric protection. Electrical parameters (VBR, VC, PPPM) are identical between both variants.
What is the thermal resistance and maximum junction temperature of SM15T220A-E3/9AT?
SM15T220A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads. Its maximum operating junction temperature (TJ) is 150 °C, supporting reliable operation in under-hood automotive environments and sealed industrial enclosures with ambient temperatures up to 125 °C.
SM15T220A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SM15T220A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220A-E3/9AT 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-E3/9AT reliable?
The price and inventory of SM15T220A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T220A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220A-E3/9AT?
SM15T220A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220A-E3/9AT 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-E3/9AT?
For technical support, including SM15T220A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220A-E3/9AT requirements.
6.How does Aetrix verify that SM15T220A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T220A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T220A-E3/9AT?
All SM15T220A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T220A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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