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Vishay General Semiconductor - Diodes Division SM15T6V8CA-E3/9AT
- Part No.:
- SM15T6V8CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8CA-E3/9AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,124
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Product details
Overview
SM15T6V8CA-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), 6.8 V breakdown voltage (VBR min = 6.45 V), 10.5 V clamping voltage at IPPM, and 150 °C max junction temperature. It protects signal lines in automotive sensor units against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T6V8CA-E3/9AT datasheet, SM15T6V8CA-E3/9AT pinout, SM15T6V8CA-E3/9AT application, or SM15T6V8CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.55), AEC-Q101 qualification eligibility, and compatibility with high-impedance transient sources requiring fast response and low inductance.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR (6.45–7.14 V), VWM (5.8 V), and VC (10.5 V at IPPM) in forward and reverse directions. Its glass-passivated junction ensures stable breakdown and low leakage (<1000 μA at VWM).
Designed for high-energy threat suppression, it delivers 1500 W peak pulse power under 10/1000 μs waveform with IPPM = 143 A, and exhibits low thermal resistance (RθJL = 15 °C/W) for reliable power dissipation during transient events without PCB-level heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single high-energy surges from lightning or motor switching without failure |
| Breakdown Voltage VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise conduction onset threshold for bidirectional clamping |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 1000 μA |
| Clamping Voltage VC at IPPM | 10.5 V at 143 A - limits protected circuit voltage to safe level during worst-case surge |
| Peak Pulse Current IPPM | 143 A - peak current handled under standardized 10/1000 μs transient waveform |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - surface-mount, low-inductance, MSL Level 1, RoHS-compliant, matte tin leads |
Pinout & Package
SM15T6V8CA-E3/9AT uses the SMC (DO-214AB) package: molded plastic case with two coplanar matte tin-plated leads, no polarity marking (bidirectional), and footprint optimized for automated placement on 8.0 mm × 8.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either polarity) | One of two symmetrical terminals; conducts during positive or negative overvoltage events |
| Cathode | Transient current exit point (either polarity) | Second symmetrical terminal; completes low-impedance path to ground or rail during clamping |
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 | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive interfaces |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity handling restrictions |
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 exposed to load-dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground, responding within nanoseconds to transients exceeding 5.8 V. Use Value: Prevents permanent damage to 5 V-tolerant microcontrollers and analog front-ends by limiting excursion to ≤10.5 V at 143 A surge current. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring subject to relay coil switching and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff device shunting transient energy away from optocoupler inputs and protection diodes during 10/1000 μs threats. Use Value: Maintains system uptime by avoiding false triggering or destruction of isolation barriers under repetitive 1 kV/500 A surge stress. |
| Consumer USB Interface Protection | Telecom Data Line Protection |
|
Use Scenario: Shielding USB 2.0 D+/D− lines in portable devices from ESD and cable discharge events during hot-plug operations. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) bidirectional clamp placed inline with data traces, grounded via shortest possible path. Use Value: Preserves signal integrity up to 480 Mbps while meeting IEC 61000-4-2 ±15 kV contact discharge requirements. |
Use Scenario: Protecting Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) in VoIP phones and base stations from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary surge suppression element located adjacent to connector, clamping common-mode transients before reaching transformer center taps. Use Value: Enables compliance with GR-1089-CORE telecom surge standards without adding series impedance or signal distortion. |
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 | Lower peak power (400 W), same VBR range, SMA package (smaller, higher RθJA) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD or local switching noise | Select when board space is constrained and surge threat level is ≤400 W (e.g., consumer peripherals) |
| 1.5KE6.8CA | Higher peak power (1500 W), axial DO-201 package, higher inductance, through-hole mounting | Requires PCB real estate and assembly process change; less suitable for high-density SMT designs | Choose only if legacy through-hole infrastructure exists and automated SMT placement is unavailable |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM15T6V8CA-E3/9AT delivers identical 1500 W surge capability in a compact, low-inductance SMC package with AEC-Q101 qualification path-making it optimal for space-constrained, high-reliability automotive and industrial SMT applications where bidirectional clamping and reflow compatibility are mandatory.
Availability
SM15T6V8CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom data line hardening requiring stable component supply, consistent RoHS-compliant manufacturing, and long-term lifecycle support.
Supply support for SM15T6V8CA-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, power efficiency, and automotive-grade qualification.
The SM15T Series is engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against lightning, inductive switching, and ESD is non-negotiable.
FAQ
What does the "CA" suffix indicate in SM15T6V8CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration: SM15T6V8CA-E3/9AT clamps voltage symmetrically in both polarities, unlike unidirectional variants (e.g., SM15T6V8A) that conduct only in reverse bias. This makes SM15T6V8CA-E3/9AT ideal for protecting AC-coupled or floating signal paths such as differential buses or transformer-isolated interfaces without polarity constraints.
Is SM15T6V8CA-E3/9AT qualified to AEC-Q101?
SM15T6V8CA-E3/9AT itself is RoHS-compliant and commercial-grade (E3 suffix); however, the SM15T6V8CA-HE3 variant is explicitly AEC-Q101 qualified. The base SM15T6V8CA-E3/9AT meets all electrical and mechanical specs required for automotive use but requires validation per customer-specific AEC-Q101 test plans unless ordered with HE3 suffix.
What is the maximum clamping voltage of SM15T6V8CA-E3/9AT under surge conditions?
The maximum clamping voltage (VC) of SM15T6V8CA-E3/9AT is 10.5 V when subjected to its rated peak pulse current of 143 A under the standard 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88380, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMC package of SM15T6V8CA-E3/9AT compare to SMA or DO-214AC?
The SMC (DO-214AB) package used by SM15T6V8CA-E3/9AT offers larger copper pad area and lower thermal resistance (RθJL = 15 °C/W) than SMA (DO-214AC), enabling higher surge current handling. Its 7.75 mm × 6.22 mm footprint provides better mechanical stability and lower parasitic inductance than smaller packages-critical for preserving clamping speed and effectiveness in high-di/dt applications.
Can SM15T6V8CA-E3/9AT be used in place of a unidirectional TVS like SM15T6V8A?
No-SM15T6V8CA-E3/9AT is bidirectional and lacks polarity marking, while SM15T6V8A is unidirectional with cathode band identification. Substituting SM15T6V8CA-E3/9AT for SM15T6V8A in DC-biased circuits may cause unintended conduction during normal operation. Use SM15T6V8CA-E3/9AT only where true bidirectional protection is required and circuit topology supports symmetrical clamping.
SM15T6V8CA-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T6V8CA-E3/9AT FAQ
1.How can I place an order for SM15T6V8CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8CA-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 SM15T6V8CA-E3/9AT reliable?
The price and inventory of SM15T6V8CA-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 SM15T6V8CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T6V8CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8CA-E3/9AT?
SM15T6V8CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8CA-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 SM15T6V8CA-E3/9AT?
For technical support, including SM15T6V8CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8CA-E3/9AT requirements.
6.How does Aetrix verify that SM15T6V8CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T6V8CA-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 SM15T6V8CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T6V8CA-E3/9AT?
All SM15T6V8CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8CA-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 SM15T6V8CA-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T6V8CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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