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Vishay General Semiconductor - Diodes Division SM6T150CAHE3/5B
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- Part No.:
- SM6T150CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CAHE3/5B.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,575
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Product details
Overview
SM6T150CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 150 V standoff voltage (VWM), 207 V clamping voltage (VC) at 2.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T150CAHE3/5B datasheet, SM6T150CAHE3/5B pinout, SM6T150CAHE3/5B application, or SM6T150CAHE3/5B equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, low clamping ratio (1.38), TJ max. of +150 °C, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified at 143–158 V (min/max) under 1 mA test current. Its clamping action limits transient-induced overvoltage across protected circuits during fast-rising surges such as ISO 7637-2 load dump or IEC 61000-4-5 line transients.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to +150 °C junction temperature. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive under-hood and body electronics applications.
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, ensuring predictable turn-on threshold |
| VC @ IPPM | 207 V @ 2.9 A - Clamped voltage during 10/1000 μs surge; defines worst-case overvoltage seen by protected IC |
| PPPM | 600 W - Peak transient power handling capability without failure under standardized waveform |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports under-hood automotive deployment |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SM6T150CAHE3/5B is a two-terminal bidirectional TVS diode in SMB (DO-214AA) package. No polarity marking is present on the case; terminals are symmetrical and interchangeable. Mounting uses standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Either terminal conducts during positive or negative transients; no fixed anode/cathode designation |
| Case (SMB body) | Thermal and mechanical interface | Non-conductive molded epoxy housing; provides mechanical stability and UL 94 V-0 flammability rating |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands high-energy transients like ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| AEC-Q101 qualification | Validates suitability for automotive ECUs, ADAS sensors, and infotainment modules requiring long-term reliability |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs and microcontrollers |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free reflow soldering without pre-baking, simplifying manufacturing flow |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors exposed to battery transients and ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and MCU ADC input. Use Value: Limits voltage excursion to ≤207 V during 10/1000 μs surges, preserving ADC integrity and preventing latch-up in 3.3 V or 5 V signal chains. | Use Scenario: Safeguarding CANH/CANL differential pair against EFT bursts and coupling noise in factory automation gateways. IC Role / Device Role / Timing Role: Low-inductance TVS connected across CAN bus lines near connector entry point. Use Value: Clamps common-mode transients to <210 V while maintaining signal integrity due to symmetric response and minimal parasitic capacitance (~100 pF). |
| Power Supply Rail Protection | Consumer USB Port ESD Guard |
Use Scenario: Secondary overvoltage protection on 12 V or 24 V DC input rails feeding switching regulators in telematics modules. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from inductive kickback and load dump events. Use Value: Absorbs up to 600 W peak power without degradation, extending system uptime versus Zener-based solutions with lower surge ratings. | Use Scenario: Board-level ESD suppression on USB 2.0 VBUS and D+/D− lines in portable infotainment head units. IC Role / Device Role / Timing Role: Bidirectional clamp shunting ±15 kV contact discharge per IEC 61000-4-2. Use Value: Achieves <30 ns response time and <207 V clamping, meeting USB-IF compliance thresholds for plug-in durability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), but lower PPPM (400 W); SMA package (larger footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Choose when cost sensitivity outweighs automotive qualification and surge margin |
| 1.5KE150CA | Higher PPPM (1500 W), through-hole DO-204AC package; slower response due to higher inductance | Suitable for board-edge protection where space allows; incompatible with SMT-only lines | Prefer for legacy designs or high-energy industrial mains-side protection where reflow is not required |
Compared with SMAJ150CA and 1.5KE150CA, SM6T150CAHE3/5B delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and SMB footprint-enabling compact, automotive-grade protection without sacrificing manufacturability or thermal performance.
Availability
SM6T150CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and power supply rail protection requiring stable component supply and full traceability.
Supply support for SM6T150CAHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series is designed specifically for surface-mount transient suppression in automotive, industrial, and communications systems where AEC-Q101 qualification, low clamping voltage, and high surge robustness are mandatory.
FAQ
What is the clamping voltage of SM6T150CAHE3/5B at its rated peak pulse current?
The SM6T150CAHE3/5B has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at 2.9 A peak pulse current (IPPM). This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is SM6T150CAHE3/5B suitable for automotive applications?
Yes, SM6T150CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness, making it appropriate for engine control units, ADAS sensors, and body electronics where reliability under harsh conditions is critical.
What does the "CA" suffix indicate in SM6T150CAHE3/5B?
The "CA" suffix in SM6T150CAHE3/5B denotes a bidirectional configuration. Unlike unidirectional variants (e.g., SM6T150A), this device clamps symmetrically for both positive and negative transients, eliminating polarity concerns in AC-coupled or floating signal paths such as CAN bus or audio lines.
What is the thermal resistance of SM6T150CAHE3/5B from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SM6T150CAHE3/5B is 100 °C/W, measured on a standard 0.2" × 0.2" copper pad per terminal. This value assumes no additional heatsinking and guides derating calculations for sustained power dissipation above 25 °C ambient.
Does SM6T150CAHE3/5B require special PCB layout considerations?
Yes - Vishay specifies minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power. Short, wide traces and ground plane proximity are recommended to minimize inductance and ensure effective clamping. The SMB package's low inductance is only realized with compliant layout per datasheet Figure 6.
SM6T150CAHE3/5B 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T150CAHE3/5B FAQ
1.How can I place an order for SM6T150CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CAHE3/5B 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 SM6T150CAHE3/5B reliable?
The price and inventory of SM6T150CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T150CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CAHE3/5B?
SM6T150CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CAHE3/5B 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 SM6T150CAHE3/5B?
For technical support, including SM6T150CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CAHE3/5B requirements.
6.How does Aetrix verify that SM6T150CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T150CAHE3/5B 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 SM6T150CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T150CAHE3/5B?
All SM6T150CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CAHE3/5B, 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 SM6T150CAHE3/5B part is unused and in its original packaging.
Return procedure for SM6T150CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CAHE3/5B Tags
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