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Vishay General Semiconductor - Diodes Division 1.5SMC220A-E3/9AT
- Part No.:
- 1.5SMC220A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220A-E3/9AT.pdf
- Description:
- TVS DIODE 185VWM 328VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
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Product details
Overview
1.5SMC220A-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 220 V standoff voltage (VWM), 209–231 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤328 V at 4.6 A. It is widely deployed in automotive power supply rails and industrial sensor interfaces to safeguard MOSFETs and microcontrollers against lightning-induced surges.
For engineers reviewing the 1.5SMC220A-E3/9AT datasheet, 1.5SMC220A-E3/9AT pinout, 1.5SMC220A-E3/9AT application, or 1.5SMC220A-E3/9AT equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, 1500 W surge rating, thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold (VBR = 209–231 V). Its glass-passivated junction ensures stable leakage (<1 µA at VWM = 185 V) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
The 1.5SMC220A-E3/9AT is rated for 1500 W peak pulse power under standardized 10/1000 µs waveform conditions, with maximum clamping voltage VC = 328 V at IPPM = 4.6 A. It supports operating junction temperatures from –65 °C to +150 °C and meets J-STD-020 MSL Level 1 reflow requirements (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 185 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 209–231 V at IT = 1 mA - Precise voltage range where device transitions into avalanche conduction; ensures predictable clamping onset. |
| PPPM | 1500 W (10/1000 µs) - Peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| VC (Clamping) | ≤328 V at IPPM = 4.6 A - Maximum voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| ID (Leakage) | ≤1 µA at VWM = 185 V - Ultra-low reverse leakage preserves system efficiency and avoids false triggering in high-impedance circuits. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in reverse-biased protection configuration | Connected to protected line (e.g., 24 V rail); clamps positive transients to ground when voltage exceeds VBR. |
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; completes clamping current path during surge events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients per IEC 61000-4-5, eliminating need for cascaded TVS or external current limiting. |
| Glass-passivated junction | Ensures long-term reliability and stable electrical parameters across temperature and lifetime, critical for automotive and industrial deployments. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive downstream ICs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying manufacturing and reducing assembly risk. |
| AEC-Q101 qualification path | HE3/HM3 variants are qualified for automotive applications; this E3/9AT variant shares identical die and construction, supporting qualification traceability. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs and body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to shunt surge energy away from DC-DC converters and microcontrollers. Use Value: Clamps 120 V/350 ms load dump transients to <328 V, preserving input stage integrity without derating or parallel devices. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (CAN, LIN) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line to ground, activated only during ESD or inductive kick events. Use Value: Sub-1 µA leakage at 185 V prevents measurement drift; 328 V clamping protects 3.3 V/5 V interface ICs from damage during field wiring faults. |
| Telecom AC/DC Adapter Input Stage | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side overvoltage suppression in offline SMPS used in broadband gateways and VoIP phones. IC Role / Device Role / Timing Role: Reverse-biased TVS across bulk capacitor output to clamp flyback transformer leakage spikes and line transients. Use Value: 1500 W rating handles repetitive 10/1000 µs surges without degradation; DO-214AB footprint fits tight board space near transformer secondary. |
Use Scenario: Protecting H-bridge gate drivers and MCU I/O in washing machine motor control boards exposed to pump back-EMF. IC Role / Device Role / Timing Role: Unidirectional TVS on each half-bridge leg's high-side and low-side supply rails to clamp commutation spikes. Use Value: 220 V VWM matches 230 VAC-derived DC bus; 328 V VC limits stress on 600 V MOSFETs during 100 ns–1 µs switching events. |
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 VWM/VBR/VC ratings but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 90 °C/W). | Limited to lower-energy transients (IEC 61000-4-2 ESD only); unsuitable for load dump or lightning surge. | Select when board space is constrained and surge threat level is low; verify thermal margin due to higher junction temperature rise. |
| 1.5KE220A | Through-hole TO-204AA (DO-41); identical electrical specs but larger size, higher inductance, and no MSL rating. | Not suitable for automated SMT production; less reliable in vibration-prone environments (e.g., automotive chassis). | Choose only for legacy through-hole designs or prototyping; avoid for new SMT-based industrial or automotive platforms. |
Compared with SMBJ220A and 1.5KE220A, the 1.5SMC220A-E3/9AT delivers full 1500 W surge handling in an MSL Level 1 SMT package-enabling robust, high-volume, automotive-grade protection without layout or process compromise.
Availability
1.5SMC220A-E3/9AT is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom power supplies, and consumer appliance motor controls requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5SMC220A-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 protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where compact SMT form factor and 1500 W surge capability are essential.
FAQ
What is the maximum clamping voltage of the 1.5SMC220A-E3/9AT under surge conditions?
The 1.5SMC220A-E3/9AT has a maximum clamping voltage (VC) of 328 V when subjected to its peak pulse current (IPPM) of 4.6 A under the standardized 10/1000 µs waveform. This value is measured at the device terminals and represents the highest voltage the protected circuit will experience during a worst-case transient event. The 1.5SMC220A-E3/9AT maintains this clamping performance across its specified operating temperature range and is validated per JEDEC test methods.
Is the 1.5SMC220A-E3/9AT suitable for automotive applications?
The 1.5SMC220A-E3/9AT uses the same die and construction as AEC-Q101-qualified variants (e.g., 1.5SMC220AHE3_A), and its base P/N-E3 suffix denotes RoHS-compliant commercial grade with MSL Level 1 and 260 °C reflow capability. While the 1.5SMC220A-E3/9AT itself is not certified, it is commonly used in non-safety-critical automotive subsystems such as body electronics and infotainment power rails-provided system-level validation confirms compliance with ISO 7637-2 and ISO 16750-2 requirements.
How does the 1.5SMC220A-E3/9AT differ from bidirectional versions like 1.5SMC220CA?
The 1.5SMC220A-E3/9AT is unidirectional and conducts only in reverse bias, making it ideal for DC line protection where polarity is fixed. In contrast, 1.5SMC220CA is bidirectional and symmetrically clamps both positive and negative transients-required for AC lines or data buses like RS-485. The 1.5SMC220A-E3/9AT offers tighter VBR tolerance (209–231 V) and lower leakage than its bidirectional counterpart, which trades some precision for dual-polarity capability.
What is the thermal resistance of the 1.5SMC220A-E3/9AT, and how does it affect layout?
The 1.5SMC220A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes minimum recommended pad layout per Vishay specification; reducing pad area increases RθJA and risks thermal runaway during repetitive surges. For high-duty-cycle applications, designers should verify junction temperature using actual power dissipation and ambient conditions-not exceed TJ(max) = 150 °C.
Can the 1.5SMC220A-E3/9AT be used in parallel for higher surge handling?
No-parallel connection of 1.5SMC220A-E3/9AT devices is not recommended due to parameter mismatch (VBR tolerance ±5 %) causing current imbalance and premature failure of the lower-VBR unit. For >1500 W requirements, select a higher-rated part (e.g., 3.0SMC220A) or implement staged protection with upstream current-limiting impedance. The 1.5SMC220A-E3/9AT is characterized and guaranteed only as a single-device solution per Vishay's published test conditions.
1.5SMC220A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC220A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220A-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 1.5SMC220A-E3/9AT reliable?
The price and inventory of 1.5SMC220A-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 1.5SMC220A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC220A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220A-E3/9AT?
1.5SMC220A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220A-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 1.5SMC220A-E3/9AT?
For technical support, including 1.5SMC220A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC220A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220A-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 1.5SMC220A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC220A-E3/9AT?
All 1.5SMC220A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220A-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 1.5SMC220A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC220A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220A-E3/9AT Tags
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