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Vishay General Semiconductor - Diodes Division SM15T220CA-E3/9AT
- Part No.:
- SM15T220CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220CA-E3/9AT.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,525
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Product details
Overview
SM15T220CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 328 V maximum clamping voltage at 4.6 A IPPM, and 188 V stand-off voltage - used to protect automotive sensor signal lines and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T220CA-E3/9AT datasheet, SM15T220CA-E3/9AT pinout, SM15T220CA-E3/9AT application, or SM15T220CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, 188 V VWM, RoHS-compliant commercial-grade packaging, and compatibility with high-impedance transient sources in automotive and industrial environments.
Technical Context
The SM15T220CA-E3/9AT operates as a bidirectional avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its 10/1000 μs waveform rating reflects standardized lightning surge immunity testing per IEC 61000-4-5.
Designed for surface-mount placement on PCBs with minimum 8.0 mm × 8.0 mm copper pads per terminal, it features glass-passivated junctions, low inductance, and MSL Level 1 moisture sensitivity - supporting reflow profiles up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 220 V nominal systems. |
| VBR (min/max) | 209 V / 231 V at 1.0 mA - verified breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 328 V at 4.6 A (10/1000 μs) - clamping voltage limits downstream IC stress during worst-case surge conditions. |
| PPPM | 1500 W - peak pulse power handling capacity for transient suppression per standard waveform definition. |
| TJ max. | +150 °C - junction temperature limit supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm height for automated assembly. |
Pinout & Package
SM15T220CA-E3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One side of symmetrical avalanche junction | Acts as cathode during positive transients; forms bidirectional conduction path with opposite terminal. |
| Cathode | Other side of symmetrical avalanche junction | Acts as anode during negative transients; enables clamping in both directions without external biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity concerns or additional components. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive electronics. |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes voltage overshoot across protected circuitry during fast transients, reducing risk of latch-up or damage. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without preconditioning or special handling. |
| RoHS-compliant E3 suffix | Meets EU RoHS Directive 2011/65/EU and JEDEC JESD201 Class 2 whisker resistance requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground to shunt surge energy before reaching sensitive interface ICs. Use Value: Maintains signal integrity during 10/1000 μs transients up to 4.6 A while limiting clamped voltage to 328 V - within safe operating range of 3.3 V/5 V sensor front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids, contactors, and motor starters. IC Role / Device Role / Timing Role: Standoff device mounted directly at connector entry point to absorb >1 kV surges before propagation into isolation barriers or microcontrollers. Use Value: Delivers 1500 W surge handling with <15 ns response time, preventing false triggering or latch-up in 24 V DC input circuits. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers in network edge devices from ESD and lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary transient suppressor in series with common-mode chokes and secondary TVS arrays on differential pairs. Use Value: Symmetrical clamping ensures balanced suppression on TX+/TX− and RX+/RX− lines without skew or common-mode distortion. |
Use Scenario: Protecting gate drivers and MCU GPIOs in smart washing machines and HVAC systems from commutation spikes generated by BLDC motor inverters. IC Role / Device Role / Timing Role: Secondary-level clamp located near motor driver ICs to catch residual transients escaping primary snubbers. Use Value: Withstands repetitive 200 A IFSM surges and operates reliably from −65 °C to +150 °C - matching motor compartment thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ220CA | Same 220 V VBR range, but lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W). | Suitable for lower-energy threats; not recommended for lightning-level surges where 1500 W rating is required. | Select SMAJ220CA only when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD or low-current switching noise. |
| ON Semiconductor 1.5KE220CA | Through-hole DO-201 package, identical 220 V VBR and 1500 W rating, but larger footprint and incompatible with SMT-only lines. | Used in legacy designs or mixed-technology assemblies where through-hole mounting remains acceptable. | Choose 1.5KE220CA only if existing PCB layout lacks SMC pad pattern or if manual repair/rework is preferred over automated SMT placement. |
Compared with SMAJ220CA and 1.5KE220CA, SM15T220CA-E3/9AT provides optimal balance of high-energy surge handling, SMT manufacturability, and thermal performance in compact SMC packaging - making it preferred for new automotive and industrial designs requiring AEC-Q101-optional qualification and RoHS compliance.
Availability
SM15T220CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM15T220CA-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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SM15T Series was developed specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against lightning, ESD, and inductive switching surges is critical.
FAQ
What does the "CA" suffix indicate in SM15T220CA-E3/9AT?
The "CA" suffix in SM15T220CA-E3/9AT denotes a bidirectional configuration, meaning the device clamps voltage symmetrically in both polarities. Unlike unidirectional variants (e.g., SM15T220A), it has no cathode band marking and is used where AC signals, differential buses, or polarity-agnostic protection is required - such as in RS-485 or CAN FD interfaces.
Is SM15T220CA-E3/9AT qualified to AEC-Q101?
No, SM15T220CA-E3/9AT is RoHS-compliant commercial-grade with E3 suffix. For AEC-Q101 qualification, the correct part is SM15T220CAHE3_A/I (HE3 suffix), which includes automotive-grade screening and extended temperature validation. The E3 version meets JESD201 Class 2 whisker resistance but lacks full AEC-Q101 test reporting.
What is the maximum clamping voltage for SM15T220CA-E3/9AT under standard test conditions?
The maximum clamping voltage VC for SM15T220CA-E3/9AT is 328 V at 4.6 A peak pulse current with a 10/1000 μs waveform, measured per Figure 1 in Vishay document 88380. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can SM15T220CA-E3/9AT be used in place of a unidirectional TVS like SM15T220A?
No - SM15T220CA-E3/9AT is bidirectional and lacks polarity marking, while SM15T220A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC-coupled or floating nodes; unidirectional parts are required for DC-biased rails where reverse leakage must be minimized below 1 μA at VWM.
What is the thermal resistance from junction to ambient for SM15T220CA-E3/9AT?
The typical thermal resistance from junction to ambient (RθJA) for SM15T220CA-E3/9AT is 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes standard JEDEC test conditions and guides heatsinking decisions for sustained power dissipation scenarios beyond transient events.
SM15T220CA-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:
- -
- 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-E3/9AT FAQ
1.How can I place an order for SM15T220CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220CA-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 SM15T220CA-E3/9AT reliable?
The price and inventory of SM15T220CA-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 SM15T220CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T220CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220CA-E3/9AT?
SM15T220CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220CA-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 SM15T220CA-E3/9AT?
For technical support, including SM15T220CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220CA-E3/9AT requirements.
6.How does Aetrix verify that SM15T220CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T220CA-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 SM15T220CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T220CA-E3/9AT?
All SM15T220CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220CA-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 SM15T220CA-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T220CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220CA-E3/9AT Tags
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