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Vishay General Semiconductor - Diodes Division SM6T15CAHE3_A/H
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- Part No.:
- SM6T15CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15CAHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,841
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Product details
Overview
SM6T15CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 15 V breakdown voltage (VBR = 14.3–15.8 V at IT = 1.0 mA), and 21.2 V maximum clamping voltage (VC) at IPPM. It provides robust ESD and surge protection for automotive sensor signal lines, industrial I/O ports, and power supply rails.
For engineers reviewing the SM6T15CAHE3_A/H datasheet, SM6T15CAHE3_A/H pinout, SM6T15CAHE3_A/H application, or SM6T15CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 °C max junction temperature, low inductance SMB package, and compliance with IEC 61000-4-2/4-5 surge immunity standards.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM = 12.8 V), while the low-inductance SMB package minimizes voltage overshoot during fast transients.
The device is rated for 600 W peak pulse power under standardized 10/1000 μs waveform, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at IT = 1.0 mA - defines precise voltage threshold where clamping initiates |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 21.2 V at 28.0 A (10/1000 μs) - limits transient voltage seen by protected IC to safe level |
| PPPM | 600 W - sustains high-energy surges without failure under standard test waveform |
| TJ max | +150 °C - enables reliable operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount footprint with 5.0 mm × 5.0 mm copper pad thermal design |
| AEC-Q101 | Qualified - certified for automotive-grade reliability and stress testing |
Pinout & Package
SM6T15CAHE3_A/H uses the SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rating, and polarity-unmarked terminals due to bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One terminal of bidirectional PN junction | Functions identically as cathode under reverse bias; no polarity marking required |
| Cathode | Other terminal of bidirectional PN junction | Electrically symmetric to anode; interchangeable in circuit layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low inductance SMB package | Reduces voltage overshoot during sub-100 ns transients, critical for high-speed data line protection |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current over temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamps transients between signal line and ground or supply rail. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during vehicle battery disconnection events. | Use Scenario: Shielding digital input/output channels on programmable logic controllers from field-induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Fast-response shunt protector placed at connector entry point before signal conditioning circuitry. Use Value: Maintains system uptime by absorbing 600 W surges without requiring fuse replacement or board-level repair. |
| Telecom Line Interface | Consumer Power Supply Input |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced common-mode transients on twisted-pair cables. IC Role / Device Role / Timing Role: Symmetrical clamp between differential pair conductors and chassis ground. Use Value: Preserves signal integrity by limiting clamping voltage to 21.2 V while handling 28 A peak current per line. | Use Scenario: Secondary-side overvoltage suppression on 12 V DC outputs of wall adapters and USB-C PD power supplies. IC Role / Device Role / Timing Role: Standoff-rated protector placed after DC-DC converter output filter. Use Value: Blocks 12.8 V steady-state ripple while clamping 150 V spikes to 21.2 V, preventing downstream regulator latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VBR range (14.3–15.8 V), but lower PPPM = 400 W; SMA package (larger RθJA = 130 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5KE15CA | Higher PPPM = 1500 W, axial DO-201 package; VC = 24.4 V at 61.5 A (10/1000 μs) | Through-hole mounting; unsuitable for automated SMT assembly or space-constrained PCBs | Choose for legacy designs requiring higher energy absorption and manual assembly compatibility |
Compared with SMAJ15CA and 1.5KE15CA, SM6T15CAHE3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capability, and compact SMB footprint-making it preferred for new automotive and industrial SMT designs where reliability, size, and manufacturability are jointly prioritized.
Availability
SM6T15CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T15CAHE3_A/H 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 high-reliability and automotive-grade solutions.
The SM6T Series is designed specifically for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and consistent surge performance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T15CAHE3_A/H?
The "CA" suffix denotes that SM6T15CAHE3_A/H is a bidirectional transient voltage suppressor, meaning it provides symmetrical clamping in both forward and reverse directions. This eliminates polarity concerns during placement and makes it ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and ungrounded power rails where voltage transients can occur with either polarity.
Is SM6T15CAHE3_A/H suitable for automotive applications?
Yes, SM6T15CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It has been tested for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 requirements, making it appropriate for engine control units, body electronics, ADAS sensors, and infotainment systems where reliability under extreme conditions is essential.
What is the maximum clamping voltage of SM6T15CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of SM6T15CAHE3_A/H is 21.2 V when subjected to a 10/1000 μs waveform with peak pulse current (IPPM) of 28.0 A. This value is measured per industry-standard test conditions and guarantees that protected downstream components will not experience voltages exceeding 21.2 V during defined surge events.
How does the SMB (DO-214AA) package of SM6T15CAHE3_A/H affect thermal performance?
The SMB package of SM6T15CAHE3_A/H provides RθJA = 100 °C/W (typical) when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Its low thermal resistance enables effective heat dissipation during repetitive surge events, while the compact footprint supports high-density PCB layouts and automated assembly without compromising power handling capability.
Does SM6T15CAHE3_A/H require polarity-aware PCB layout?
No, SM6T15CAHE3_A/H does not require polarity-aware layout because it is a bidirectional TVS diode with no cathode marking. The SMB package has identical electrical behavior in both directions, allowing unrestricted orientation during placement-reducing assembly errors and simplifying design for differential or floating signal paths.
SM6T15CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SM6T15CAHE3_A/H FAQ
1.How can I place an order for SM6T15CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15CAHE3_A/H 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 SM6T15CAHE3_A/H reliable?
The price and inventory of SM6T15CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T15CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15CAHE3_A/H?
SM6T15CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15CAHE3_A/H 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 SM6T15CAHE3_A/H?
For technical support, including SM6T15CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T15CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T15CAHE3_A/H 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 SM6T15CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T15CAHE3_A/H?
All SM6T15CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15CAHE3_A/H, 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 SM6T15CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T15CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15CAHE3_A/H Tags
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