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Vishay General Semiconductor - Diodes Division SM6T15CAHE3_B/I
- Part No.:
- SM6T15CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15CAHE3_B/I.pdf
- Description:
- 600W,15V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,246
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Product details
Overview
SM6T15CAHE3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 15 V standoff voltage (VWM), 16.7 V minimum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to ≤27.2 V at 28 A, with <1.0 μA reverse leakage at VWM, and is AEC-Q101 qualified for automotive use.
For engineers reviewing the SM6T15CAHE3_B/I datasheet, SM6T15CAHE3_B/I pinout, SM6T15CAHE3_B/I application, or SM6T15CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, 150 °C max junction temperature, RoHS-compliant matte tin terminals, MSL Level 1 rating, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and low inductance, critical for fast transient suppression on signal and power lines.
Designed for high-reliability environments, SM6T15CAHE3_B/I meets AEC-Q101 stress testing requirements and supports operation from –65 °C to +150 °C. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling effective power dissipation under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 16.7 V - Minimum breakdown voltage at 1 mA test current, defining turn-on threshold |
| VC (max) | 27.2 V - Maximum clamping voltage at 28 A peak pulse current (10/1000 μs), limiting protected circuit stress |
| PPPM | 600 W - Peak pulse power handling capability under standardized surge waveform |
| ID (max) | 1.0 μA - Reverse leakage current at VWM, ensuring minimal standby power loss |
| TJ max | +150 °C - Maximum junction temperature, supporting under-hood automotive deployment |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" x 0.205" footprint and J-STD-020 MSL Level 1 rating |
Pinout & Package
SM6T15CAHE3_B/I is housed in an SMB (DO-214AA) surface-mount package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Accepts surge current during positive voltage excursions; forms one side of symmetrical clamping path |
| Cathode | Transient current entry (negative half-cycle) | Accepts surge current during negative voltage excursions; completes bidirectional clamping loop with anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5 mm × 5 mm copper pads |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying SMT manufacturing |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground, shunting transients before they reach precision amplifier inputs. Use Value: Maintains sensor accuracy by limiting voltage excursion to ≤27.2 V during 28 A surges, preventing latch-up or parametric shift in downstream ADCs. | Use Scenario: Safeguarding CANH/CANL differential pair in industrial gateways subjected to EFT bursts and lightning-induced surges. IC Role / Device Role / Timing Role: Symmetric TVS placed between CANH–CANL and CANH–GND/CANL–GND to absorb common-mode and differential-mode transients. Use Value: Preserves signal integrity by clamping differential spikes within ±27.2 V window, avoiding CAN controller reset or bit error accumulation. |
| Consumer USB Port ESD Protection | Telecom Power Supply Input Stage |
Use Scenario: Secondary-level surge protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp absorbing IEC 61000-4-2 contact discharges up to ±15 kV while minimizing signal distortion. Use Value: Achieves <1.0 μA leakage at 15 V, ensuring no impact on USB enumeration timing or voltage regulation stability. | Use Scenario: Front-end transient suppression on 24 V DC input rails of telecom base station power modules exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC/DC converters, diverting 600 W pulses away from sensitive switching controllers. Use Value: Limits input rail overshoot to ≤27.2 V during 10/1000 μs events, preventing MOSFET avalanche failure and maintaining converter startup reliability. |
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 VWM (15 V), lower PPPM (400 W), SMA package (larger RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required | Select SMAJ15CA only if board space allows larger SMA footprint and thermal budget permits higher junction temperature rise |
| 1.5KE15CA | Same VWM and bidirectionality, but through-hole DO-201 package; 600 W rating, higher capacitance (~100 pF vs. ~50 pF) | Not compatible with SMT-only production; higher parasitic capacitance may degrade high-speed signal integrity | Choose 1.5KE15CA only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ15CA and 1.5KE15CA, SM6T15CAHE3_B/I delivers identical clamping performance in a smaller SMB footprint, superior thermal resistance, and AEC-Q101 qualification-making it the preferred choice for space-constrained, high-reliability automotive and industrial SMT designs.
Availability
SM6T15CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB power delivery systems, and telecom DC input protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T15CAHE3_B/I 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, efficiency, and application-specific optimization.
The SM6T Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low inductance, and precise clamping are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SM6T15CAHE3_B/I?
The "CA" suffix in SM6T15CAHE3_B/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SM6T15A), SM6T15CAHE3_B/I has no polarity marking and functions identically regardless of voltage polarity applied across its terminals-ideal for protecting AC-coupled or floating signal paths.
Is SM6T15CAHE3_B/I suitable for automotive applications?
Yes, SM6T15CAHE3_B/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stringent stress testing requirements for temperature cycling, humidity, mechanical shock, and ESD, and is rated for operation from –65 °C to +150 °C-making it appropriate for engine control units, body control modules, and ADAS sensor interfaces per ISO 16750 and ISO 7637-2 standards.
What is the maximum clamping voltage of SM6T15CAHE3_B/I under surge conditions?
The maximum clamping voltage (VC) of SM6T15CAHE3_B/I is 27.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 28 A. This value is guaranteed per Vishay's datasheet (Document Number 88385, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the SMB package of SM6T15CAHE3_B/I compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of SM6T15CAHE3_B/I offers a 30 % smaller footprint than SMA and 50 % smaller than SMC, with lower thermal resistance (RθJA = 100 °C/W vs. 140 °C/W for SMA). Its MSL Level 1 rating enables direct reflow at 260 °C without baking-unlike many SMC variants-making SM6T15CAHE3_B/I optimal for high-density, high-throughput SMT assembly.
Does SM6T15CAHE3_B/I require a heatsink for standard operation?
No, SM6T15CAHE3_B/I does not require an external heatsink for typical transient suppression duty cycles. Its 5.0 W steady-state power dissipation rating and 100 °C/W junction-to-ambient thermal resistance are sufficient when mounted on standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per datasheet recommendations. Heatsinking is only needed for sustained high-duty-cycle surges beyond datasheet derating curves.
SM6T15CAHE3_B/I 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:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T15CAHE3_B/I FAQ
1.How can I place an order for SM6T15CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15CAHE3_B/I 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_B/I reliable?
The price and inventory of SM6T15CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T15CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15CAHE3_B/I?
SM6T15CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15CAHE3_B/I 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_B/I?
For technical support, including SM6T15CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15CAHE3_B/I requirements.
6.How does Aetrix verify that SM6T15CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T15CAHE3_B/I 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_B/I meets industry standards.
7.What is the process for return or replacement of SM6T15CAHE3_B/I?
All SM6T15CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15CAHE3_B/I, 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_B/I part is unused and in its original packaging.
Return procedure for SM6T15CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15CAHE3_B/I Tags
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