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Vishay General Semiconductor - Diodes Division SM15T6V8CAHE3/9AT
- Part No.:
- SM15T6V8CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8CAHE3/9AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,242
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Product details
Overview
SM15T6V8CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 6.8 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 10.5 V clamping voltage at 143 A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM15T6V8CAHE3/9AT datasheet, SM15T6V8CAHE3/9AT pinout, SM15T6V8CAHE3/9AT application, or SM15T6V8CAHE3/9AT equivalent, this device is selected for robust ESD and lightning-induced transient suppression in automotive sensor interfaces, industrial I/O protection, and DC power rail clamping where low clamping ratio and bidirectional symmetry are critical.
Technical Context
The SM15T6V8CAHE3/9AT operates as a bidirectional avalanche diode with symmetrical reverse/forward clamping behavior, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5% min/max) and low leakage (<1000 μA at 5.8 V stand-off).
Thermal design relies on low RθJL (15 °C/W) and mounting on 8.0 mm × 8.0 mm copper pads to sustain 1500 W pulses; failure mode under overstress is short-circuit, supporting fail-safe system architecture. It meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 5.8 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | 10.5 V at 143 A (10/1000 μs) - clamping voltage during worst-case surge; determines protected circuit's max stress level |
| PPPM | 1500 W - peak transient energy handling capability; qualifies for IEC 61000-4-5 Level 4 (lightning) protection |
| IPPM | 143 A - peak surge current supported with defined waveform; used to size upstream fusing and trace routing |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Bidirectional construction means no polarity marking; terminals are symmetric anode/cathode pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Terminal 1) | Anode/Cathode pair (bidirectional) | Identical terminal function in both directions; no cathode band marking - device is electrically symmetric |
| Anode (Terminal 2) | Anode/Cathode pair (bidirectional) | Same as Terminal 1; interchangeable role enables placement without orientation check on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV line-to-ground in typical 2 Ω source impedance systems |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers or ADC front-ends |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free assembly without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching MCU or signal conditioner. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while surviving repeated 1500 W surges per AEC-Q101 stress profile. |
Use Scenario: Safeguarding RS-485 or 24 V digital input channels in PLC backplanes subject to inductive switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS clamp on differential pair or supply rail; coordinates with series impedance to limit let-through energy. Use Value: Clamps 143 A transients to ≤10.5 V within 1 ns response time, preventing latch-up in interface ICs without adding capacitance penalties. |
| DC Power Rail Clamping | Consumer Device ESD Protection |
Use Scenario: Secondary surge suppression on 5–12 V DC power rails feeding infotainment head units or ADAS cameras. IC Role / Device Role / Timing Role: Fast-acting parallel clamp that activates after primary fuse or PTC, absorbing residual energy missed by upstream protection. Use Value: Delivers 1500 W pulse handling with <15 °C/W thermal resistance to avoid thermal runaway during sustained overvoltage conditions. |
Use Scenario: Board-level ESD protection for USB-C or HDMI hot-swap ports in laptops and docking stations per IEC 61000-4-2 Level 4 (±15 kV air). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to divert ESD current away from PHY ICs. Use Value: Achieves sub-1 ns response with <1000 μA leakage at 5.8 V, preserving signal integrity on high-speed differential lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Lower PPPM (400 W), same SMC package, non-AEC-Q101, higher VC/VBR ratio (1.55) | Suitable for commercial-grade consumer electronics; insufficient for automotive surge compliance | Select SMAJ6.8CA only when cost sensitivity outweighs automotive qualification and 1500 W requirement |
| SMCJ6.8CA | Same 1500 W rating and AEC-Q101 option available, but larger SMC package variant with identical pinout and VBR spec | Functionally interchangeable in layout; differs only in mechanical robustness and thermal mass | SMCJ6.8CA offers higher IFSM (200 A vs. 143 A) and slightly lower RθJA, preferred for high-reliability industrial designs |
Compared with SMAJ6.8CA and SMCJ6.8CA, the SM15T6V8CAHE3/9AT delivers identical bidirectional clamping performance and AEC-Q101 validation in the smallest SMC footprint, making it optimal for space-constrained automotive modules requiring full IEC 61000-4-5 Level 4 compliance without layout revision.
Availability
SM15T6V8CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and DC power rail clamping requiring stable component supply, AEC-Q101 traceability, and 1500 W surge resilience.
Supply support for SM15T6V8CAHE3/9AT 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, precision, and automotive-grade qualification.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 validation and 1500 W pulse capability.
FAQ
What is the clamping voltage of SM15T6V8CAHE3/9AT at its rated peak pulse current?
The SM15T6V8CAHE3/9AT has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 143 A using the standard 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 surge events. The low VC relative to VBR ensures minimal overvoltage stress on downstream components like microcontrollers or transceivers.
Is SM15T6V8CAHE3/9AT suitable for automotive applications?
Yes, SM15T6V8CAHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's SM15T datasheet (Rev. 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification. The device is explicitly recommended for automotive sensor units, body electronics, and infotainment systems requiring robust transient immunity per ISO 7637-2 and IEC 61000-4-5 standards.
What does the "CA" suffix indicate in SM15T6V8CAHE3/9AT?
The "CA" suffix in SM15T6V8CAHE3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SM15T6V8A), this version has no polarity marking and functions identically regardless of voltage polarity-ideal for AC-coupled lines, differential buses, or floating grounds where directionality cannot be guaranteed.
What is the thermal resistance specification for SM15T6V8CAHE3/9AT?
The SM15T6V8CAHE3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and a junction-to-ambient resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. These values are critical for thermal design: RθJL governs short-pulse survivability, while RθJA informs steady-state power derating above 25 °C ambient. Both are specified in the Thermal Characteristics table of Vishay document 88380.
How does SM15T6V8CAHE3/9AT differ from SM15T6V8A?
The SM15T6V8CAHE3/9AT is the bidirectional, AEC-Q101 qualified version, whereas SM15T6V8A is unidirectional and commercial-grade. Key differences include polarity marking (absent in CA), clamping symmetry (equal in both directions), and qualification status (HE3 suffix confirms automotive validation). Electrically, both share identical VBR, VWM, and PPPM ratings-but only SM15T6V8CAHE3/9AT supports automotive safety-critical signal paths per OEM requirements.
SM15T6V8CAHE3/9AT 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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)
SM15T6V8CAHE3/9AT FAQ
1.How can I place an order for SM15T6V8CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8CAHE3/9AT 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 SM15T6V8CAHE3/9AT reliable?
The price and inventory of SM15T6V8CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T6V8CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8CAHE3/9AT?
SM15T6V8CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8CAHE3/9AT 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 SM15T6V8CAHE3/9AT?
For technical support, including SM15T6V8CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8CAHE3/9AT requirements.
6.How does Aetrix verify that SM15T6V8CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T6V8CAHE3/9AT 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 SM15T6V8CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T6V8CAHE3/9AT?
All SM15T6V8CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8CAHE3/9AT, 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 SM15T6V8CAHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T6V8CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T6V8CAHE3/9AT Tags
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