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Vishay General Semiconductor - Diodes Division SM15T220CA-E3/57T
- Part No.:
- SM15T220CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220CA-E3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
SM15T220CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 220 V breakdown voltage (VBR), and 328 V maximum clamping voltage (VC) at 4.6 A IPPM. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T220CA-E3/57T datasheet, SM15T220CA-E3/57T pinout, SM15T220CA-E3/57T application, or SM15T220CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 188 V stand-off voltage (VWM), low leakage (<1 μA), AEC-Q101 qualification eligibility, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low thermal drift (αT = 10.8 × 10−4/°C), critical for high-temperature automotive environments up to +150 °C junction temperature.
The device uses a low-inductance SMC package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102, enabling robust surge current handling (IPPM = 4.6 A) while maintaining fast response time (<1 ns) and meeting MSL Level 1 reflow requirements (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 188 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 328 V at 4.6 A (10/1000 μs) - clamping voltage limiting downstream circuit stress during surge events |
| PPPM | 1500 W - peak transient power absorption capacity per JEDEC standard waveform |
| IPPM | 4.6 A - maximum non-repetitive peak pulse current the device sustains without failure |
| TJmax | +150 °C - enables operation in under-hood automotive and industrial control enclosures |
| RθJA | 75 °C/W - thermal resistance indicating need for minimum 8.0 mm × 8.0 mm copper pads per terminal |
Pinout & Package
SM15T220CA-E3/57T is housed in an SMC (DO-214AB) surface-mount package with two terminals: symmetrical anode/cathode configuration for bidirectional operation. No polarity marking is present on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path - identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power | Withstands lightning-induced surges (IEC 61000-4-5 Level 4) and inductive switching spikes in industrial I/O |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to protected ICs such as CAN transceivers or ADC front-ends |
| AEC-Q101 qualification option | HE3/HM3 variants support automotive-grade reliability requirements for sensor and ECU applications |
| MSL Level 1 moisture sensitivity | Permits standard SMT reflow without dry-bag storage or baking prior to assembly |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤328 V, preserving ADC integrity and preventing latch-up in 3.3 V/5 V signal chains. |
Use Scenario: Shielding RS-485 transceiver data lines in programmable logic controllers subjected to 4 kV EFT bursts. IC Role / Device Role / Timing Role: Fast-response TVS shunting surge energy before it reaches differential receiver inputs. Use Value: Maintains signal integrity during 10/1000 μs transients with <1 ns response, avoiding communication errors. |
| Telecom Power Rail Protection | Consumer Device USB Port |
Use Scenario: Safeguarding 24 V DC power inputs of VoIP gateways against induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Standoff-rated (188 V) TVS placed upstream of DC-DC converter input stage. Use Value: Absorbs 1500 W surges without degradation, ensuring uninterrupted operation during building-wide lightning events. |
Use Scenario: Guarding USB 2.0 D+/D− lines in smart home hubs against ESD events from user contact. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor integrated into USB connector footprint. Use Value: Provides ±15 kV air-gap ESD protection (IEC 61000-4-2) while adding <0.5 pF parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Lower PPPM (600 W), same VBR (209–231 V), SMB package (smaller footprint, higher RθJA) | Suitable for lower-energy threats; not recommended for lightning-level surges per IEC 61000-4-5 | Select SMBJ220CA only when board space is constrained and threat level is limited to EFT/ESD, not lightning. |
| SMCJ220CA | Higher PPPM (3000 W), identical VBR, same SMC package but larger die and higher IPPM (9.2 A) | Required for systems needing margin above 1500 W or compliance with harsher surge standards (e.g., ISO 7637-2 Pulse 5a) | Choose SMCJ220CA when designing for extended surge lifetime or automotive OEM specifications exceeding 1500 W. |
Compared with SM15T220CA-E3/57T, SMBJ220CA offers reduced surge margin and thermal derating headroom, while SMCJ220CA provides double the peak power rating and higher surge endurance-making it preferable for mission-critical automotive and industrial deployments where long-term reliability under repeated transients is essential.
Availability
SM15T220CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, telecom power supplies, and consumer USB interface protection requiring stable component supply and RoHS-compliant packaging.
Supply support for SM15T220CA-E3/57T 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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The SM15T Series is engineered for robust transient suppression in harsh electromagnetic environments, targeting automotive, industrial, and telecom applications where high peak power, bidirectional symmetry, and AEC-Q101 qualification readiness are required.
FAQ
What does the "CA" suffix indicate in SM15T220CA-E3/57T?
The "CA" suffix in SM15T220CA-E3/57T denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., SM15T220A), SM15T220CA-E3/57T has no cathode band marking and functions identically regardless of voltage polarity applied across its terminals.
Is SM15T220CA-E3/57T qualified to AEC-Q101?
SM15T220CA-E3/57T itself is RoHS-compliant and commercial-grade (E3 suffix); however, the AEC-Q101 qualified version is designated as SM15T220CAHE3_A/H or SM15T220CAHM3_A/H. The base SM15T220CA-E3/57T meets all electrical and mechanical specs of the qualified variants except formal stress-test certification.
What is the maximum clamping voltage of SM15T220CA-E3/57T and at what current is it specified?
The maximum clamping voltage of SM15T220CA-E3/57T is 328 V, measured at a peak pulse current (IPPM) of 4.6 A using the standardized 10/1000 μs double-exponential waveform. This value ensures downstream components see controlled overvoltage during surge events.
Can SM15T220CA-E3/57T be used in place of a unidirectional TVS like SM15T220A?
No - SM15T220CA-E3/57T is strictly bidirectional and lacks polarity marking, making it unsuitable as a drop-in replacement for unidirectional SM15T220A in circuits requiring forward conduction or DC bias blocking. Substitution requires schematic and layout review to confirm symmetrical placement and absence of DC polarity constraints.
What PCB pad layout is required for optimal thermal performance of SM15T220CA-E3/57T?
For optimal thermal performance, SM15T220CA-E3/57T must be mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads increase junction temperature and reduce surge current capability, potentially leading to premature failure under repeated transients.
SM15T220CA-E3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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)
SM15T220CA-E3/57T FAQ
1.How can I place an order for SM15T220CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220CA-E3/57T 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 SM15T220CA-E3/57T reliable?
The price and inventory of SM15T220CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T220CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220CA-E3/57T?
SM15T220CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220CA-E3/57T 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 SM15T220CA-E3/57T?
For technical support, including SM15T220CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220CA-E3/57T requirements.
6.How does Aetrix verify that SM15T220CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T220CA-E3/57T 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 SM15T220CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T220CA-E3/57T?
All SM15T220CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220CA-E3/57T, 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 SM15T220CA-E3/57T part is unused and in its original packaging.
Return procedure for SM15T220CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220CA-E3/57T Tags
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