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Vishay General Semiconductor - Diodes Division SM15T6V8CAHE3/57T
- Part No.:
- SM15T6V8CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8CAHE3/57T.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,103
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Product details
Overview
SM15T6V8CAHE3/57T 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), 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), and 10.5 V clamping voltage (VC) at 143 A peak pulse current - used to protect automotive sensor signal lines against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T6V8CAHE3/57T datasheet, SM15T6V8CAHE3/57T pinout, SM15T6V8CAHE3/57T application, or SM15T6V8CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR = 1.54), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM ratings in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 μA at VWM), while low-inductance SMC packaging enables fast response to sub-microsecond transients.
The device is thermally rated for TJ = −65 °C to +150 °C, features RθJA = 75 °C/W (typ.), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its failure mode under overstress is a short circuit - a critical safety behavior for fault-tolerant automotive and industrial protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise voltage threshold where avalanche conduction begins in either polarity |
| 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 seen by protected IC during worst-case surge; limits stress on downstream components |
| PPPM | 1500 W - peak transient power handling capacity; validates suitability for lightning surge (IEC 61000-4-5 Level 4) and motor-switching events |
| IPPM | 143 A - peak surge current capability; determines minimum system source impedance required to stay within rating |
| TJ max. | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC specification |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H), with 3.20 mm cathode band width (non-applicable for bidirectional types).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No functional distinction between terminals; either terminal serves as input/output for surge current in either direction |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against high-energy transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 combination wave surges |
| AEC-Q101 qualified (HE3 suffix) | Validates long-term reliability in automotive applications including engine control units, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR = 1.54) | Minimizes voltage overshoot during clamping - critical for safeguarding 5 V and 3.3 V logic interfaces without overvoltage damage |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination risks |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime - essential for precision sensing front-ends |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground to shunt surge energy before it reaches the IC's ESD structure. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers by limiting transient voltage to ≤10.5 V during 143 A surges. | Use Scenario: Safeguarding digital input channels of programmable logic controllers connected to 24 V DC field wiring subject to inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Fast-response TVS placed at connector entry point to absorb switching transients before they propagate into isolation barriers or microcontroller GPIOs. Use Value: Maintains signal integrity by clamping transients within 1 ns, avoiding false triggering or reset events in real-time control loops. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to common ground, providing symmetrical clamping for balanced signaling. Use Value: Preserves data integrity by holding differential voltage swing within ±10.5 V during 10/1000 μs surges - compliant with ITU-T K.21 basic protection level. | Use Scenario: Protecting MCU GPIOs and gate drivers in smart washing machine control boards from motor commutation noise and relay bounce. IC Role / Device Role / Timing Role: Localized TVS mounted directly at motor driver IC supply pins and feedback signal nodes to suppress high-frequency ringing. Use Value: Reduces electromagnetic emissions and prevents firmware crashes caused by transient-induced bit flips in flash memory or register states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA-E3/57T | Lower PPPM (400 W), same VBR (6.45–7.14 V), SMA package (smaller footprint, higher RθJA) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or industrial non-automotive use only | Select when cost and board space are prioritized over automotive qualification and surge robustness |
| SMCJ6.8CAHE3/57T | Higher PPPM (1500 W), identical VBR/VC, same SMC package and AEC-Q101 qualification - but larger die and tighter VBR tolerance (±5% vs. ±5.2%) | Same automotive and industrial use cases; preferred for designs requiring margin above 143 A IPPM or stricter VBR consistency | Choose when enhanced surge margin or tighter parametric control is required without changing layout |
Compared with SMAJ6.8CA-E3/57T, SM15T6V8CAHE3/57T delivers triple the surge power rating and automotive qualification; versus SMCJ6.8CAHE3/57T, it offers identical protection performance in a functionally equivalent form factor but with slightly relaxed VBR tolerance - making it ideal for cost-sensitive AEC-Q101 designs where 1500 W capability is mandatory.
Availability
SM15T6V8CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and consumer appliance motor control systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SM15T6V8CAHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and application-specific optimization.
The SM15T Series is designed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge capability, and low-clamp performance are mandatory.
FAQ
What is the clamping voltage of SM15T6V8CAHE3/57T at its rated peak pulse current?
The SM15T6V8CAHE3/57T has a maximum clamping voltage (VC) of 10.5 V at 143 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and reflects the actual voltage imposed on protected circuitry during worst-case surge conditions - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is SM15T6V8CAHE3/57T suitable for automotive applications?
Yes, SM15T6V8CAHE3/57T is AEC-Q101 qualified (denoted by the HE3 suffix) and explicitly rated for automotive use. It undergoes stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making it appropriate for engine control units, ADAS camera modules, and body electronics where reliability under thermal and electrical stress is essential.
What does the "CA" suffix indicate in SM15T6V8CAHE3/57T?
The "CA" suffix in SM15T6V8CAHE3/57T designates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied. This eliminates the need for polarity-aware placement and simplifies layout for AC-coupled or differential signal lines.
What is the thermal resistance of SM15T6V8CAHE3/57T, and how does it affect PCB layout?
The SM15T6V8CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures under sustained power dissipation, designers must provide adequate copper area and avoid excessive trace length - especially important in automotive under-hood applications where ambient temperatures exceed 85 °C.
How does the glass passivation in SM15T6V8CAHE3/57T improve long-term reliability?
The glass-passivated chip junction in SM15T6V8CAHE3/57T enhances long-term reliability by preventing moisture ingress and oxidation at the silicon surface, stabilizing breakdown voltage over time and temperature, and reducing leakage current drift. This is particularly valuable in automotive and industrial environments where thermal cycling and humidity exposure could otherwise degrade unprotected junctions.
SM15T6V8CAHE3/57T 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:
- 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)
SM15T6V8CAHE3/57T FAQ
1.How can I place an order for SM15T6V8CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8CAHE3/57T 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 SM15T6V8CAHE3/57T reliable?
The price and inventory of SM15T6V8CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T6V8CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8CAHE3/57T?
SM15T6V8CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8CAHE3/57T 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 SM15T6V8CAHE3/57T?
For technical support, including SM15T6V8CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8CAHE3/57T requirements.
6.How does Aetrix verify that SM15T6V8CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T6V8CAHE3/57T 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 SM15T6V8CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T6V8CAHE3/57T?
All SM15T6V8CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8CAHE3/57T, 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 SM15T6V8CAHE3/57T part is unused and in its original packaging.
Return procedure for SM15T6V8CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T6V8CAHE3/57T Tags
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