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Vishay General Semiconductor - Diodes Division SM15T220CAHE3/9AT
- Part No.:
- SM15T220CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T220CAHE3/9AT.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,842
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Product details
Overview
SM15T220CAHE3/9AT 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 clamping voltage at 4.6 A IPPM, and 188 V stand-off voltage - used to protect automotive sensor signal lines and I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T220CAHE3/9AT datasheet, SM15T220CAHE3/9AT pinout, SM15T220CAHE3/9AT application, or SM15T220CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, low clamping ratio, and compatibility with high-impedance transient sources in automotive ECUs and industrial control modules.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical breakdown behavior in both polarities due to its bidirectional CA construction. It exhibits a typical thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature under defined PCB pad layout.
Clamping performance is specified at 10/1000 μs waveform with VC = 328 V at IPPM = 4.6 A, and at 8/20 μs waveform with VC = 388 V at IPPM = 26 A - confirming robust response across standard surge test profiles including IEC 61000-4-5 and ISO 7637-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 188 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - symmetric conduction onset in both directions; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 328 V at 4.6 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for standardized lightning surges; validates suitability for IEC 61000-4-5 Level 4 |
| TJ max | 150 °C - maximum junction temperature; supports under-hood automotive use with proper thermal design |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile, RoHS-compliant, matte tin-plated leads, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking; symmetrical terminals enable AC-coupled protection without orientation constraints |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No band or marking - distinguishes from unidirectional variants and confirms CA (bidirectional) construction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC or differential signal lines (e.g., CAN FD, LIN, sensor bridges) without polarity concerns |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications up to Level 4 |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring extended temperature and lifetime validation |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs/ICs |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS device clamping transient spikes above 188 V while remaining non-conductive during normal 12 V/24 V operation. Use Value: Prevents sensor IC damage from ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2b (inductive switching), extending field reliability. | Use Scenario: Safeguarding RS-485 transceiver inputs in factory automation PLCs connected to long cable runs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp limiting line-to-line surges to ≤328 V during ESD or lightning-induced coupling. Use Value: Maintains communication integrity under IEC 61000-4-5 2 kV surge testing without system reset or data corruption. |
| Automotive Lighting Control | Consumer Appliance Motor Drive |
Use Scenario: Suppressing back-EMF from LED driver FETs in adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Fast-response shunt element absorbing inductive kickback during PWM switching of high-side drivers. Use Value: Eliminates need for snubber networks while sustaining >100,000-cycle lifetime under AEC-Q101 accelerated stress conditions. | Use Scenario: Protecting microcontroller GPIOs driving relay coils or small BLDC motors in smart home appliances. IC Role / Device Role / Timing Role: Standby-mode protector with <1 μA leakage at 188 V, enabling low-power sleep state integrity. Use Value: Reduces BOM count by replacing discrete Zener+capacitor networks with a single qualified TVS component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA-E3/57T | 600 W rating (vs. 1500 W); SMA package (smaller thermal mass); same VWM/VBR range | Lower surge handling limits use to sub-IEC Level 3 environments; unsuitable for direct lightning coupling paths | Select when board space is constrained and threat level is limited to ESD or low-energy switching noise |
| 1.5KE220CA | Through-hole DO-201 package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) | Requires wave soldering; less suitable for automated SMT lines and high-density automotive PCBs | Prefer for legacy designs or prototyping where rework flexibility outweighs production efficiency |
Compared with SMAJ220CA-E3/57T and 1.5KE220CA, SM15T220CAHE3/9AT delivers higher surge robustness in an AEC-Q101-qualified SMT package, enabling compact, high-reliability protection for automotive and industrial edge nodes without compromising thermal performance or manufacturing scalability.
Availability
SM15T220CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 interfaces, and LED driver protection requiring stable component supply, AEC-Q101 compliance, and 1500 W surge immunity.
Supply support for SM15T220CAHE3/9AT 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM15T Series is designed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be controlled and clamping precision is critical to system-level EMC compliance.
FAQ
What does the "CA" suffix indicate in SM15T220CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration, meaning SM15T220CAHE3/9AT provides symmetrical clamping in both voltage polarities - essential for protecting AC-coupled or differential signal lines like CAN, LIN, or sensor bridges without polarity sensitivity. This differs from unidirectional "A" variants that require correct cathode orientation.
Is SM15T220CAHE3/9AT qualified for automotive use?
Yes, SM15T220CAHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. It undergoes stress testing for high-temperature reverse bias, temperature cycling, and humidity exposure - making it suitable for under-hood and body-control module applications where reliability across -65 °C to +150 °C is mandatory.
What is the clamping voltage of SM15T220CAHE3/9AT at its rated peak pulse current?
SM15T220CAHE3/9AT has a maximum clamping voltage (VC) of 328 V at 4.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
How does the SMC (DO-214AB) package of SM15T220CAHE3/9AT impact thermal performance?
The SMC package provides a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This enables SM15T220CAHE3/9AT to sustain repeated 1500 W surges without exceeding 150 °C junction temperature under validated PCB layout conditions.
Can SM15T220CAHE3/9AT replace unidirectional TVS diodes in existing designs?
No - SM15T220CAHE3/9AT is strictly bidirectional and lacks polarity marking; substituting it for a unidirectional part (e.g., SM15T220AHE3/9AT) would compromise protection on DC-biased lines. Its use requires verification that the protected circuit operates with symmetrical voltage excursions or employs differential signaling architecture.
SM15T220CAHE3/9AT 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T220CAHE3/9AT FAQ
1.How can I place an order for SM15T220CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T220CAHE3/9AT 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 SM15T220CAHE3/9AT reliable?
The price and inventory of SM15T220CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T220CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T220CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T220CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T220CAHE3/9AT?
SM15T220CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T220CAHE3/9AT 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 SM15T220CAHE3/9AT?
For technical support, including SM15T220CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T220CAHE3/9AT requirements.
6.How does Aetrix verify that SM15T220CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T220CAHE3/9AT 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 SM15T220CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T220CAHE3/9AT?
All SM15T220CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T220CAHE3/9AT, 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 SM15T220CAHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T220CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T220CAHE3/9AT Tags
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