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Vishay General Semiconductor - Diodes Division SM15T220AHM3/I
- Part No.:
- SM15T220AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220AHM3/I.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,519
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Product details
Overview
SM15T220AHM3/I 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), 1500 W peak pulse power (10/1000 μs), and 4.6 A peak pulse current (IPPM). It protects MOSFETs and signal lines in automotive powertrain control units against lightning-induced surges and inductive switching transients.
For engineers reviewing the SM15T220AHM3/I datasheet, SM15T220AHM3/I pinout, SM15T220AHM3/I application, or SM15T220AHM3/I equivalent, key selection criteria include clamping voltage (VC = 328 V at IPPM), stand-off voltage (VWM = 188 V), AEC-Q101 qualification, halogen-free RoHS compliance, and SMC package thermal resistance (RθJL = 15 °C/W).
Technical Context
The SM15T220AHM3/I uses a glass-passivated silicon junction to achieve low clamping ratio (VC/VBR ≈ 1.42) and fast response time (<1 ps). Its unidirectional polarity enables integration into DC-biased power rails where reverse conduction must be blocked.
Designed for high-impedance source environments, it operates within -65 °C to +150 °C junction temperature range and sustains 200 A non-repetitive forward surge current (10 ms half-sine). The device fails short-circuit under overstress, supporting predictable system-level fault containment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - Ensures reliable triggering above 188 V operating rail without false clamping |
| VWM | 188 V - Maximum continuous reverse voltage before leakage exceeds 1 μA |
| VC @ IPPM | 328 V - Clamped voltage during 4.6 A transient limits downstream IC stress to safe margin |
| PPPM | 1500 W - Withstands lightning-induced 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 under-hood automotive applications with sustained ambient up to +125 °C |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated leads. Cathode marked by band on case end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional clamp configuration |
| Cathode | Current exit point during reverse breakdown | Connected to protected line (e.g., 188 V DC bus); band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to downstream MOSFET gate oxide and driver ICs |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and chassis modules requiring zero early-life failure |
| MSL Level 1 (260 °C reflow) | Enables single-pass lead-free assembly without moisture sensitivity concerns |
| Glass passivated junction | Ensures stable VBR and leakage performance across 15-year automotive service life |
Applications
| Automotive Powertrain Control | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 12 V–24 V CAN/LIN transceivers and microcontroller I/O pins in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes on supply and signal lines before they reach sensitive analog front-ends. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V logic interfaces while maintaining <1 μA leakage at 188 V standby. |
Use Scenario: Safeguarding PLC digital input modules connected to 24 V DC sensors subject to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing 1500 W surges within nanoseconds to avoid controller reset or false triggering. Use Value: Enables >100,000 actuation cycles without degradation due to low inductance and stable VC drift. |
| Telecom Power Supply Input | Renewable Energy Inverter DC Link |
Use Scenario: Guarding primary-side DC-DC converter inputs in base station power supplies against lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of EMI filter to shunt energy before it couples into regulation circuitry. Use Value: Maintains 188 V hold-off during normal operation while clamping to 328 V during 4 kV IEC 61000-4-5 events. |
Use Scenario: Protecting IGBT gate drivers and auxiliary power rails in solar string inverters subjected to grid-switching transients. IC Role / Device Role / Timing Role: High-energy TVS integrated into DC link monitoring circuitry to prevent false overvoltage trips. Use Value: Delivers 1500 W pulse handling without derating at +105 °C ambient, supporting compact thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220AHE3/A | Lower PPPM (600 W), same VBR range, SMB package (smaller footprint, higher RθJA) | Preferred for space-constrained consumer electronics with lower threat levels | Select when board area is critical and surge energy does not exceed 600 W |
| SMCJ220A-M3/57T | Same SMC package, identical VBR/VC, but commercial-grade (non-AEC-Q101), M3 halogen-free RoHS | Suitable for industrial automation where automotive qualification is unnecessary | Choose for cost-sensitive industrial designs requiring same robustness without AEC validation |
Compared with SMBJ220AHE3/A and SMCJ220A-M3/57T, SM15T220AHM3/I delivers 2.5× higher surge power in the same SMC footprint while guaranteeing automotive reliability-making it optimal for safety-critical 12–48 V systems where failure modes must be fully characterized.
Availability
SM15T220AHM3/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive I/O protection, and telecom power supply input applications requiring stable component supply and long-term lifecycle support.
Supply support for SM15T220AHM3/I 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 high-reliability, high-power, and automotive-qualified solutions.
The SM15T Series is designed specifically for high-energy transient suppression in harsh-environment applications-including automotive, industrial, and telecom-where 1500 W surge capability and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SM15T220AHM3/I at its rated peak pulse current?
The SM15T220AHM3/I has a maximum clamping voltage (VC) of 328 V when subjected to its peak pulse current (IPPM) of 4.6 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C on recommended 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T220AHM3/I qualified for automotive applications?
Yes, SM15T220AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It undergoes stress testing including temperature cycling, high-temperature reverse bias, and accelerated life testing to meet automotive electronic module requirements.
What does the "I" suffix mean in SM15T220AHM3/I?
The "I" suffix in SM15T220AHM3/I denotes the tape-and-reel packaging option: 3500 units per 13-inch diameter reel (package code "9AT"). This format supports high-volume automated SMT placement and is distinct from the "H" suffix (850 units per 7-inch reel).
How does SM15T220AHM3/I differ from SM15T220A-E3/57T?
SM15T220AHM3/I is halogen-free and AEC-Q101 qualified, whereas SM15T220A-E3/57T is RoHS-compliant but commercial-grade only. Both share identical electrical specs and SMC package, but HM3/I ensures automotive reliability and material compliance required for under-hood deployment.
What is the thermal resistance from junction to lead (RθJL) for SM15T220AHM3/I?
The SM15T220AHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, measured under standard conditions. This low value enables efficient heat transfer from the silicon die directly into the PCB copper pads, supporting sustained power dissipation without external heatsinking.
SM15T220AHM3/I 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/I FAQ
1.How can I place an order for SM15T220AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220AHM3/I 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/I reliable?
The price and inventory of SM15T220AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220AHM3/I is usually 5 days.
3.What payment methods are accepted for SM15T220AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220AHM3/I?
SM15T220AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220AHM3/I 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/I?
For technical support, including SM15T220AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220AHM3/I requirements.
6.How does Aetrix verify that SM15T220AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T220AHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of SM15T220AHM3/I?
All SM15T220AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220AHM3/I, 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/I part is unused and in its original packaging.
Return procedure for SM15T220AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220AHM3/I Tags
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