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Vishay General Semiconductor - Diodes Division SM15T7V5CAHE3/9AT
- Part No.:
- SM15T7V5CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T7V5CAHE3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,606
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Product details
Overview
SM15T7V5CAHE3/9AT 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), 7.13–7.88 V breakdown voltage at 10 mA test current, and 11.3 V maximum clamping voltage at 132 A peak pulse current. It protects signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM15T7V5CAHE3/9AT datasheet, SM15T7V5CAHE3/9AT pinout, SM15T7V5CAHE3/9AT application, or SM15T7V5CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.48), and compatibility with high-impedance transient sources such as I/O lines and sensor interfaces.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction-no polarity marking required. Its glass-passivated junction ensures stable breakdown behavior under repetitive 10/1000 μs transients up to 1500 W, and its thermal resistance (RθJL = 15 °C/W) supports reliable operation at TJ up to +150 °C when mounted on 8.0 mm × 8.0 mm copper pads.
The SM15T7V5CAHE3/9AT exhibits 6.40 V stand-off voltage (VWM), <1000 μA reverse leakage at VWM, and a clamping ratio of 1.48 (11.3 V / 7.6 V typical VBR). It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains lightning-induced surges on external I/O lines without degradation |
| Breakdown Voltage VBR (IT = 10 mA) | 7.13–7.88 V - defines precise conduction onset for bidirectional overvoltage protection |
| Stand-off Voltage VWM | 6.40 V - maximum continuous reverse voltage before leakage exceeds 1000 μA |
| Clamping Voltage VC (IPPM = 132 A) | 11.3 V - limits transient voltage seen by downstream ICs during worst-case surge |
| Peak Pulse Current IPPM | 132 A - peak surge current handled at 10/1000 μs waveform with 1500 W dissipation |
| Junction Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, TCT, and H3TRB |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant, halogen-free option available. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H), cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | Conducts during positive transients relative to cathode; symmetric with cathode in bidirectional mode |
| Cathode | Transient current entry (forward bias) | Conducts during negative transients relative to anode; no band marking per bidirectional design |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse rating | Handles lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) on high-impedance lines |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control, ADAS sensors, and body electronics |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤11.3 V while sustaining 132 A pulses, preserving signal integrity and preventing ESD latch-up in 5 V/3.3 V sensor front-ends. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V industrial field devices subject to relay coil switching transients. IC Role / Device Role / Timing Role: Primary surge suppression element on DIN-rail-mounted I/O terminal blocks, positioned upstream of optocoupler isolation. Use Value: Clamps 10/1000 μs surges to 11.3 V within 1 ns response time, enabling use of lower-voltage-rated interface ICs and reducing system BOM cost. |
| Telecom Line Interface | Consumer Device USB/UART Protection |
Use Scenario: Shielding Ethernet PHY magnetics and PoE-powered device interfaces from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection to handle residual fast-rising transients. Use Value: Low clamping voltage ensures compliance with IEEE 802.3af/bt surge immunity requirements while maintaining signal rise-time integrity. |
Use Scenario: Protecting USB 2.0 D+/D− and UART TX/RX lines in portable medical monitors and smart home hubs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Board-level ESD suppressor placed adjacent to connectors, leveraging low capacitance (<100 pF) and fast response. Use Value: Prevents data corruption and interface lockup during ±8 kV contact ESD events per IEC 61000-4-2, with no signal attenuation at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | 600 W peak pulse power, higher clamping voltage (12.0 V @ 67 A), same SMC package | Limited to lower-energy threats (IEC 61000-4-5 Level 2); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 1500 W surge margin is unnecessary |
| SMCJ7.5CA | 1500 W rating, identical VBR/VC specs, but only commercial-grade (no AEC-Q101) | Suitable for industrial/commercial designs where automotive reliability validation is not required | Choose for non-automotive systems needing identical electrical performance without AEC-Q101 overhead |
Compared with SMAJ7.5CA and SMCJ7.5CA, the SM15T7V5CAHE3/9AT delivers equivalent clamping performance with certified automotive reliability and higher surge margin than SMAJ, while offering AEC-Q101 assurance that SMCJ7.5CA lacks-critical for Tier-1 automotive supply chain compliance.
Availability
SM15T7V5CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for SM15T7V5CAHE3/9AT 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 and application-specific optimization.
The SM15T Series is designed for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge handling, and bidirectional symmetry are mandatory.
FAQ
What does the "CA" suffix indicate in SM15T7V5CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration: the SM15T7V5CAHE3/9AT conducts equally in both directions, eliminating polarity concerns during PCB layout. Unlike unidirectional variants (e.g., SM15T7V5A), it has no cathode band marking and provides symmetrical clamping for AC-coupled or floating signal paths.
Is SM15T7V5CAHE3/9AT suitable for protecting 5 V logic interfaces?
Yes-the SM15T7V5CAHE3/9AT has a 6.40 V stand-off voltage (VWM) and clamps to 11.3 V at 132 A, making it appropriate for safeguarding 5 V systems against transients. Its low clamping ratio ensures downstream 5 V ICs remain within absolute maximum ratings during surge events, provided board layout minimizes parasitic inductance.
How does the HE3 suffix affect SM15T7V5CAHE3/9AT's qualification status?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification-verified per stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. This distinguishes it from commercial-grade variants like SM15T7V5CA-E3/9AT, which lack automotive validation.
What is the recommended pad layout for SM15T7V5CAHE3/9AT to achieve rated 1500 W performance?
Vishay specifies mounting on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal to achieve full 1500 W peak pulse power. Smaller pads reduce thermal dissipation and derate IPPM; the SM15T7V5CAHE3/9AT's RθJL of 15 °C/W assumes this minimum copper area for effective heat spreading during transient events.
Does SM15T7V5CAHE3/9AT meet JEDEC moisture sensitivity level requirements?
Yes-the SM15T7V5CAHE3/9AT is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can withstand reflow soldering at a peak temperature of 260 °C without preconditioning bake. This simplifies manufacturing for high-volume SMT assembly lines.
SM15T7V5CAHE3/9AT 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 132A
- 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 (SMC)
SM15T7V5CAHE3/9AT FAQ
1.How can I place an order for SM15T7V5CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T7V5CAHE3/9AT 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 SM15T7V5CAHE3/9AT reliable?
The price and inventory of SM15T7V5CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T7V5CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T7V5CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T7V5CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T7V5CAHE3/9AT?
SM15T7V5CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T7V5CAHE3/9AT 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 SM15T7V5CAHE3/9AT?
For technical support, including SM15T7V5CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T7V5CAHE3/9AT requirements.
6.How does Aetrix verify that SM15T7V5CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T7V5CAHE3/9AT 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 SM15T7V5CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T7V5CAHE3/9AT?
All SM15T7V5CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T7V5CAHE3/9AT, 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 SM15T7V5CAHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T7V5CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T7V5CAHE3/9AT Tags
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