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Vishay General Semiconductor - Diodes Division SM6T150AHE3_B/I
- Part No.:
- SM6T150AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150AHE3_B/I.pdf
- Description:
- 600W,150V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
SM6T150AHE3_B/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 150 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR), 207 V max clamping voltage at 2.9 A IPPM, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T150AHE3_B/I datasheet, SM6T150AHE3_B/I pinout, SM6T150AHE3_B/I application, or SM6T150AHE3_B/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, and RoHS-compliant, halogen-free AEC-Q101 qualified construction.
Technical Context
This TVS diode operates as a fast-acting shunt protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 143–158 V). Its low-inductance SMB package and glass-passivated junction enable sub-nanosecond response to ESD and lightning-induced transients.
Clamping behavior is defined by VC = 207 V at IPPM = 2.9 A (10/1000 μs), with derating above TA = 25 °C per Fig. 2 and maximum junction temperature of 150 °C. It meets J-STD-020 MSL Level 1 and supports automated SMT placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 143 V / 158 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 207 V at 2.9 A - Clamped voltage during 10/1000 μs surge; determines protected circuit stress level |
| PPPM | 600 W - Peak transient energy absorption capability under standard waveform |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; dictates power derating on PCB without heatsink |
| TJ max. | +150 °C - Absolute maximum junction temperature; sets upper limit for thermal design margin |
| Polarity | Unidirectional - Cathode marked with band; blocks forward current, clamps reverse surges |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts avalanche current to anode during overvoltage |
| Anode | Reference/return path | Typically tied to ground or low-impedance return; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–48 V systems |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics requiring zero-failure reliability under thermal cycling and vibration |
| Glass passivated chip junction | Improves long-term stability and leakage control vs. epoxy-passivated alternatives; supports <1 μA ID at VWM |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time), critical for CAN/LIN bus and sensor interface protection |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns; eliminates bake requirements pre-SMT |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Shunt-clamp TVS placed upstream of DC/DC converters and LDOs to limit input voltage excursion. Use Value: Withstands 600 W surges while clamping to ≤207 V, preventing damage to downstream regulators rated for 36 V max input. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (CAN, LIN) of industrial sensors exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional or unidirectional transient suppressor across signal and supply pins to absorb induced EFT and lightning coupling. Use Value: Low clamping voltage (207 V) and fast response protect precision op-amps and microcontrollers without adding signal distortion or latency. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection on AC/DC adapter inputs and telecom line cards subjected to AC mains surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary-level TVS in series with MOV or GDT, providing precise clamping before secondary protection stages. Use Value: Tight VBR tolerance (±5 %) ensures predictable coordination with upstream overvoltage devices and avoids premature triggering. | Use Scenario: Secondary-side DC bus protection in USB PD and Qi wireless charging adapters where compact size and reliability are critical. IC Role / Device Role / Timing Role: Unidirectional TVS on +VOUT rail to suppress switching noise and accidental reverse-polarity events. Use Value: SMB footprint saves board space vs. larger DO-214AB packages while maintaining 600 W rating and AEC-Q101 traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-E3/52 | Same SMB package, 150 V VWM, but lower PPPM (600 W same), higher VC = 243 V at 2.5 A | Less effective clamping headroom for 150 V rails; higher let-through voltage stresses downstream ICs | Prefer SM6T150AHE3_B/I when clamping voltage margin below 210 V is required |
| 1.5SMC150A | DO-214AB package, same VWM/VC specs, but larger footprint and higher RθJA (70 °C/W) | Requires more PCB area; less suitable for dense automotive modules with strict layout constraints | Choose SM6T150AHE3_B/I for space-constrained AEC-Q101 designs needing SMB form factor |
Compared with SMBJ150A-E3/52 and 1.5SMC150A, SM6T150AHE3_B/I delivers tighter clamping (207 V vs. 243 V), lower thermal resistance in SMB, and guaranteed AEC-Q101 qualification-making it optimal for automotive and high-density industrial protection where voltage headroom and reliability are critical.
Availability
SM6T150AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom line card surge protection, and consumer power adapter input protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SM6T150AHE3_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 automotive-grade qualification.
The SM6T Series is engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom applications-delivering consistent clamping performance, AEC-Q101 validation, and optimized SMB packaging for automated SMT assembly.
FAQ
What is the clamping voltage of SM6T150AHE3_B/I under a 10/1000 μs surge?
The SM6T150AHE3_B/I has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at IPPM = 2.9 A. This value is measured per Figure 1 in the official Vishay datasheet (Doc. #88385, Rev. 09-Jan-2024) and defines the peak voltage seen by downstream circuitry during standardized surge events. The SM6T150AHE3_B/I maintains this clamping performance across its specified operating temperature range.
Is SM6T150AHE3_B/I qualified for automotive applications?
Yes, SM6T150AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. It is rated for operation from –65 °C to +150 °C junction temperature and meets J-STD-020 MSL Level 1, making it suitable for under-hood and body electronics. The SM6T150AHE3_B/I qualification documentation is included in Vishay's compliance reports referenced in Doc. #88385.
What does the "_B/I" suffix mean in SM6T150AHE3_B/I?
The "_B/I" suffix in SM6T150AHE3_B/I indicates packaging configuration: "B" denotes the revision code (Revision B), and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3200 units. This matches Vishay's ordering convention in Table "ORDERING INFORMATION" (page 2 of Doc. #88385), where "I" corresponds to 3200-piece reels. The SM6T150AHE3_B/I is fully compatible with standard SMT pick-and-place equipment.
How does SM6T150AHE3_B/I differ from bidirectional versions like SM6T150CA?
SM6T150AHE3_B/I is unidirectional, with polarity indicated by a cathode band and intended for DC line protection where reverse conduction must be blocked. In contrast, SM6T150CA is bidirectional, lacks polarity marking, and clamps symmetrically in both directions-suitable for AC lines or differential signals. Their VBR and VC values are identical, but SM6T150AHE3_B/I cannot replace SM6T150CA in AC-coupled applications without circuit redesign.
What is the thermal resistance of SM6T150AHE3_B/I, and how does it affect layout?
The SM6T150AHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal. This value assumes minimal PCB copper; increasing pad area or adding internal ground planes reduces RθJA. For continuous power dissipation near 5.0 W, thermal relief must be designed accordingly-SM6T150AHE3_B/I is intended for transient, not steady-state, power handling.
SM6T150AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- 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)
SM6T150AHE3_B/I FAQ
1.How can I place an order for SM6T150AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150AHE3_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 SM6T150AHE3_B/I reliable?
The price and inventory of SM6T150AHE3_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 SM6T150AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T150AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150AHE3_B/I?
SM6T150AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150AHE3_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 SM6T150AHE3_B/I?
For technical support, including SM6T150AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150AHE3_B/I requirements.
6.How does Aetrix verify that SM6T150AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T150AHE3_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 SM6T150AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T150AHE3_B/I?
All SM6T150AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150AHE3_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 SM6T150AHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T150AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150AHE3_B/I Tags
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