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Vishay General Semiconductor - Diodes Division 1.5SMC220A-M3/9AT
- Part No.:
- 1.5SMC220A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220A-M3/9AT.pdf
- Description:
- TVS DIODE 185VWM 328VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,686
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Product details
Overview
1.5SMC220A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 220 V breakdown voltage (VBR = 209–231 V at IT = 1.0 mA), 328 V maximum clamping voltage (VC) at 4.6 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against lightning-induced transients and inductive switching surges in industrial and automotive electronics.
For engineers reviewing the 1.5SMC220A-M3/9AT datasheet, 1.5SMC220A-M3/9AT pinout, 1.5SMC220A-M3/9AT application, or 1.5SMC220A-M3/9AT equivalent, key selection criteria include unidirectional polarity, 185 V stand-off voltage (VWM), <1.0 µA reverse leakage at VWM, M3 halogen-free RoHS compliance, and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and surge events.
The 1.5SMC220A-M3/9AT is designed for PCB-level protection of DC power rails and low-speed signal lines where precise standoff and robust clamping are required. It complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity standards when applied with appropriate layout-0.31" × 0.31" copper pads per terminal-and derated above TA = 25 °C per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at IT = 1.0 mA - defines reliable avalanche onset range for consistent clamping behavior |
| VWM | 185 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 328 V at 4.6 A - peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability under standard surge waveform |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting high-energy inductive load switching |
| TJ max | +150 °C - maximum junction temperature, enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on recommended pad layout, guiding heatsinking needs |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference | Completes conduction path during transient clamp; must be routed with low-inductance trace to minimize overshoot |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., power rail or signal) | Acts as high-impedance node until VAK ≥ VBR; band-marked end determines correct orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables protection against severe lightning-induced surges (IEC 61000-4-5 Level 4) without failure |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for industrial and automotive supply chains |
| AEC-Q101 qualification path | Available in HM3 variant (e.g., 1.5SMC220AHM3_A/I), enabling use in automotive ECUs and ADAS sensors |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed microcontroller power inputs in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping surges within 1 ns to prevent MCU latch-up or damage. Use Value: Withstands 1500 W pulses and maintains VC ≤ 328 V, keeping downstream regulator input within safe SOA limits. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS mounted at connector interface, shunting induced transients before they reach precision ADC front-end. Use Value: Low 1.0 µA leakage at 185 V VWM avoids signal offset errors; fast response preserves measurement integrity during ESD events. |
| Telecom DC Power Input Protection | Consumer Device USB Port ESD Clamp |
Use Scenario: Secondary surge protection on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual energy after primary MOV/GDT stage, preventing overvoltage propagation. Use Value: Precise 209–231 V VBR window ensures coordination with upstream protectors while delivering 328 V clamping ceiling. |
Use Scenario: Board-level ESD protection on VBUS line of USB 2.0 ports in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp diverting ±15 kV HBM ESD strikes away from USB controller IC. Use Value: Sub-1 ns response time and 1500 W rating exceed IEC 61000-4-2 Level 4 requirements without degrading signal integrity. |
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 | Same VBR (209–231 V) and VC (328 V), but lower PPPM = 600 W in SMB (DO-214AA) package | Limited to moderate-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Select only when space constraints prohibit SMC footprint and surge energy is ≤600 W |
| 1.5KE220A | Through-hole TO-204AE (DO-41) package; identical electrical specs but higher RθJA (~100 °C/W) and no MSL 1 rating | Not compatible with automated SMT assembly; requires wave soldering and larger board area | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ220A and 1.5KE220A, the 1.5SMC220A-M3/9AT delivers full 1500 W surge capability in an MSL Level 1–qualified SMT package, enabling high-reliability automated production for automotive and industrial systems where both power density and process compatibility are critical.
Availability
1.5SMC220A-M3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom DC input conditioning, and consumer USB port ESD suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC220A-M3/9AT 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 protection devices with emphasis on reliability, ruggedness, and automotive-grade qualification.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for harsh-environment applications including automotive electronics, industrial controls, and telecommunications infrastructure.
FAQ
What is the maximum clamping voltage of the 1.5SMC220A-M3/9AT under a 10/1000 µs surge?
The 1.5SMC220A-M3/9AT has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current of 4.6 A under the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the 1.5SMC220A-M3/9AT suitable for automotive applications?
Yes-the 1.5SMC220A-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and it belongs to the AEC-Q101-qualified 1.5SMC family. While the M3 variant itself is commercial-grade, the identical electrical specifications are available in HM3 suffix versions (e.g., 1.5SMC220AHM3_A/I) explicitly qualified to AEC-Q101, making the 1.5SMC220A-M3/9AT design-ready for automotive use with proper suffix selection.
What does the "/9AT" suffix indicate in 1.5SMC220A-M3/9AT?
The "/9AT" suffix denotes packaging: 13-inch diameter plastic tape-and-reel format containing 3500 units per reel. This is distinct from "/57T", which indicates a 7-inch reel with 850 units. Both formats use the same 1.5SMC220A-M3 die and meet identical electrical and thermal specifications per Vishay's ordering information table.
How does the 1.5SMC220A-M3/9AT differ from bidirectional variants like 1.5SMC220CA?
The 1.5SMC220A-M3/9AT is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. In contrast, 1.5SMC220CA is bidirectional-no polarity marking, symmetric VBR in both directions-and used for AC lines or differential signal pairs. Their VBR, VC, and PPPM values are identical, but circuit integration and layout rules differ fundamentally.
What is the thermal resistance junction-to-ambient (RθJA) for the 1.5SMC220A-M3/9AT?
The 1.5SMC220A-M3/9AT has a typical RθJA of 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal, per Vishay's datasheet Figure 2 and Thermal Characteristics table. This value assumes still air and guides thermal design for sustained power dissipation up to 6.5 W.
1.5SMC220A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 185V
- 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)
1.5SMC220A-M3/9AT FAQ
1.How can I place an order for 1.5SMC220A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220A-M3/9AT 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 1.5SMC220A-M3/9AT reliable?
The price and inventory of 1.5SMC220A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC220A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220A-M3/9AT?
1.5SMC220A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220A-M3/9AT 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 1.5SMC220A-M3/9AT?
For technical support, including 1.5SMC220A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC220A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220A-M3/9AT 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 1.5SMC220A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC220A-M3/9AT?
All 1.5SMC220A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220A-M3/9AT, 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 1.5SMC220A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC220A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220A-M3/9AT Tags
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