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Vishay General Semiconductor - Diodes Division SM15T6V8CAHM3/H
- Part No.:
- SM15T6V8CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8CAHM3/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,603
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Product details
Overview
SM15T6V8CAHM3/H 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 maximum clamping voltage at 143 A peak pulse current, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the SM15T6V8CAHM3/H datasheet, SM15T6V8CAHM3/H pinout, SM15T6V8CAHM3/H application, or SM15T6V8CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.54), halogen-free RoHS compliance, and suitability for I/O line protection in harsh environments with lightning or inductive switching transients.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR (6.45–7.14 V), VWM (5.80 V), and ID (1000 μA max) in either direction. Its clamping behavior is defined by a 10/1000 μs waveform, delivering 10.5 V clamping at 143 A IPPM - critical for protecting downstream ICs without overvoltage stress.
The device uses a glass-passivated silicon junction, achieves MSL Level 1 moisture sensitivity, and sustains operation from −65 °C to +150 °C. Its low-inductance SMC package enables fast response (<1 ps) and minimizes voltage overshoot during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - ensures reliable conduction onset above 5.8 V stand-off while avoiding false triggering |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 143 A (10/1000 μs) - limits protected circuit voltage to safe level during worst-case surge |
| PPPM | 1500 W - handles lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) with adequate margin |
| TJ max | +150 °C - supports under-hood automotive placement and industrial ambient conditions |
| Package | SMC (DO-214AB) - surface-mount footprint compatible with automated assembly and thermal pad layout per JEDEC MS-013 |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
SM15T6V8CAHM3/H is housed in an SMC (DO-214AB) plastic 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 point (positive half-cycle) | Conducts surge current when voltage exceeds +VBR; connects to line being protected |
| Cathode | Transient current entry point (negative half-cycle) | Conducts surge current when voltage exceeds −VBR; connects to same line as anode for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power | Withstands 4 kV IEC 61000-4-5 surge tests on 2 Ω source impedance with margin |
| Halogen-free & RoHS-compliant | Meets automotive and industrial environmental compliance mandates (Vishay HM3 suffix) |
| Low clamping voltage (10.5 V) | Provides tighter voltage limiting than unidirectional counterparts, reducing risk to 5 V logic interfaces |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver I/O pins in engine control units against load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Maintains signal integrity below 10.5 V during 143 A surges, preventing latch-up or damage to ISO 11898-compliant transceivers. |
Use Scenario: Safeguarding RS-485/RS-422 differential pairs in factory automation PLCs exposed to motor drive noise. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to ground, suppressing ±1 kV EFT bursts per IEC 61000-4-4. Use Value: Clamps common-mode spikes without distorting differential signaling due to matched bidirectional VBR symmetry. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Shielding USB 2.0 D+/D− lines in set-top boxes from human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF typical) placed inline between connector and USB PHY. Use Value: Limits voltage to ≤10.5 V within <1 ns, preserving 480 Mbps data integrity while passing IEC 61000-4-2 Level 4 (±15 kV air). |
Use Scenario: Front-end protection of ADSL/VDSL line cards against lightning-induced surges entering via telephone wiring. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at line interface, upstream of hybrid transformer and line driver. Use Value: Absorbs 1500 W energy per 10/1000 μs waveform, enabling compliance with GR-1089-CORE Zone 3 requirements. |
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), smaller SMA package, higher VC/VBR ratio (1.71), non-AEC-Q101 | Suitable for cost-sensitive consumer electronics with lower surge threat levels | Choose SMAJ6.8CA only if system-level surge testing does not exceed IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE6.8CA | Higher VC (11.5 V), axial leaded DO-201 package, 1500 W rating but larger footprint and manual assembly required | Used where board space is unconstrained and wave soldering is preferred over reflow | Select 1.5KE6.8CA only when SMC footprint is incompatible and AEC-Q101 qualification is not required |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM15T6V8CAHM3/H delivers superior surge robustness in a compact, automotive-qualified SMC package - enabling higher reliability in space-constrained, high-reliability designs without sacrificing manufacturability.
Availability
SM15T6V8CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus systems, consumer USB port protection, and telecom DSL line surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SM15T6V8CAHM3/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 reliability, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering AEC-Q101 qualified, halogen-free TVS solutions with precise clamping and robust surge handling.
FAQ
What is the breakdown voltage tolerance for SM15T6V8CAHM3/H?
The SM15T6V8CAHM3/H has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, measured per JEDEC standard. This ±5% tolerance ensures consistent clamping onset across production lots and supports reliable design margining against 5.8 V stand-off voltage.
Is SM15T6V8CAHM3/H suitable for protecting 3.3 V logic circuits?
No - SM15T6V8CAHM3/H is not recommended for direct protection of 3.3 V logic because its 5.8 V stand-off voltage exceeds the absolute maximum rating of most 3.3 V ICs. It is intended for 5 V or higher voltage rails, such as automotive microcontroller I/O, CAN transceivers, or DSL line drivers.
Does SM15T6V8CAHM3/H require a heatsink for continuous operation?
No heatsink is required for normal transient suppression duty cycles. With a 6.5 W steady-state power dissipation rating and 75 °C/W junction-to-ambient thermal resistance, SM15T6V8CAHM3/H relies on PCB copper pads (8 mm × 8 mm per terminal) for thermal management during short-duration surges.
How does the "HM3" suffix in SM15T6V8CAHM3/H affect compliance?
The "HM3" suffix indicates halogen-free, RoHS-compliant construction and AEC-Q101 qualification. Unlike "E3" or "M3" variants, HM3-certified SM15T6V8CAHM3/H meets automotive-grade reliability testing including temperature cycling, high-temperature operating life, and ESD robustness per AEC specifications.
Can SM15T6V8CAHM3/H replace unidirectional TVS diodes in existing designs?
SM15T6V8CAHM3/H can replace unidirectional types only if the circuit is inherently symmetric or AC-coupled. Its bidirectional behavior eliminates polarity concerns but introduces equal clamping in both directions - verify that negative-going transients do not violate downstream component ratings before substitution.
SM15T6V8CAHM3/H 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 (SMC)
SM15T6V8CAHM3/H FAQ
1.How can I place an order for SM15T6V8CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8CAHM3/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 SM15T6V8CAHM3/H reliable?
The price and inventory of SM15T6V8CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8CAHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T6V8CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8CAHM3/H?
SM15T6V8CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8CAHM3/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 SM15T6V8CAHM3/H?
For technical support, including SM15T6V8CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8CAHM3/H requirements.
6.How does Aetrix verify that SM15T6V8CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T6V8CAHM3/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 SM15T6V8CAHM3/H meets industry standards.
7.What is the process for return or replacement of SM15T6V8CAHM3/H?
All SM15T6V8CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8CAHM3/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 SM15T6V8CAHM3/H part is unused and in its original packaging.
Return procedure for SM15T6V8CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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