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Vishay General Semiconductor - Diodes Division SM6T150CAHE3/52
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- Part No.:
- SM6T150CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CAHE3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
SM6T150CAHE3/52 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 and industrial I/O interfaces.
For engineers reviewing the SM6T150CAHE3/52 datasheet, SM6T150CAHE3/52 pinout, SM6T150CAHE3/52 application, or SM6T150CAHE3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.38), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its reverse standoff voltage (VWM = 128 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for high-reliability environments, SM6T150CAHE3/52 features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002, and thermal resistance RθJA = 100 °C/W - enabling operation up to TJ = 150 °C without forced cooling when mounted on 5.0 mm × 5.0 mm copper pads.
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 at 1 mA - guaranteed avalanche initiation range under DC test conditions |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - peak clamped voltage seen by protected IC during worst-case surge |
| PPPM | 600 W - surge energy handling capacity per single transient event |
| 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-grade reliability including temperature cycling, HTRB, and ESD testing |
| Leakage (ID) | <1 μA at 128 V - negligible standby current draw in normal operation |
Pinout & Package
SM6T150CAHE3/52 uses an SMB (DO-214AA) surface-mount package with two terminals: Cathode and Anode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric for transient suppression in AC-coupled or differential signal paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive half-cycle) | Connects to line being protected; conducts during positive overvoltage events |
| Cathode | Transient current entry point (negative half-cycle) | Connects to line being protected; conducts during negative overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 50 Ω lines |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor modules |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during fast transients, reducing stress on downstream ICs |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed directly at connector entry points or IC pins. Use Value: Clamps 128 V transients to ≤207 V within nanoseconds, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor interface ICs. | Use Scenario: Safeguarding RS-485/RS-422 transceivers and PLC analog input channels against lightning-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional clamping element integrated into TVS diode arrays or discrete front-end protection circuits. Use Value: Symmetric breakdown enables protection of differential pairs without adding common-mode imbalance or skew. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after rectification but before primary regulation stage. Use Value: 128 V VWM allows safe operation across universal input ranges while clamping 1.2/50 μs surges to 207 V. | Use Scenario: Primary protection for Ethernet PHYs and DSL line drivers subjected to induced surges from nearby power lines or antenna coupling. IC Role / Device Role / Timing Role: First-stage shunt device in multi-level protection schemes with gas discharge tubes and PTCs. Use Value: Fast response time (<1 ns) and low capacitance (<100 pF) prevent signal degradation on 100 Mbps+ data links. |
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 (128 V), lower PPPM (400 W), SMA package (larger RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load-dump scenarios | Choose when cost sensitivity outweighs peak power margin and board space permits larger footprint |
| 1.5KE150CA | Higher PPPM (1500 W), axial leaded DO-201 package, non-SMT | Requires through-hole assembly; unsuitable for high-density or automated production | Select only for legacy designs or prototyping where manual soldering is acceptable |
Compared with SMAJ150CA and 1.5KE150CA, SM6T150CAHE3/52 delivers optimal balance of AEC-Q101 qualification, 600 W surge capability, and SMB footprint - making it preferred for new automotive and industrial SMT designs requiring zero-layout rework and long-term supply stability.
Availability
SM6T150CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapter secondary-side protection, and telecom line card surge suppression requiring stable component supply across extended product lifecycles.
Supply support for SM6T150CAHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance, precise clamping, and SMT manufacturability are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T150CAHE3/52?
The "CA" suffix in SM6T150CAHE3/52 denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T150A), SM6T150CAHE3/52 has no cathode marking and clamps equally for positive and negative overvoltage events - essential for protecting AC-coupled or differential signal paths without polarity concerns.
Is SM6T150CAHE3/52 qualified for automotive use?
Yes, SM6T150CAHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3". This certification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness - validating its suitability for under-hood and cabin-mounted automotive electronics such as engine control units, ADAS sensors, and body control modules.
What is the clamping voltage of SM6T150CAHE3/52 under standard test conditions?
The clamping voltage (VC) of SM6T150CAHE3/52 is 207 V when subjected to a 10/1000 μs waveform at peak pulse current (IPPM) of 2.9 A. This value is measured per JEDEC standards and reflects the maximum voltage imposed on protected circuitry during a defined surge event - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can SM6T150CAHE3/52 replace SM6T150A in an existing design?
No, SM6T150CAHE3/52 cannot directly replace SM6T150A because they differ in polarity: SM6T150A is unidirectional (cathode-marked), while SM6T150CAHE3/52 is bidirectional (no marking). Substitution requires verifying that the circuit does not rely on DC blocking or polarity-sensitive conduction - otherwise, unintended forward conduction may occur during normal operation.
What is the thermal resistance of SM6T150CAHE3/52, and how does it affect layout?
SM6T150CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain junction temperature below 150 °C under 5.0 W steady-state dissipation, designers must ensure adequate copper area and avoid excessive ambient temperatures - especially in enclosed automotive or industrial enclosures where airflow is limited.
SM6T150CAHE3/52 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)
SM6T150CAHE3/52 FAQ
1.How can I place an order for SM6T150CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CAHE3/52 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 SM6T150CAHE3/52 reliable?
The price and inventory of SM6T150CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CAHE3/52?
SM6T150CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CAHE3/52 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 SM6T150CAHE3/52?
For technical support, including SM6T150CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CAHE3/52 requirements.
6.How does Aetrix verify that SM6T150CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150CAHE3/52 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 SM6T150CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150CAHE3/52?
All SM6T150CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CAHE3/52, 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 SM6T150CAHE3/52 part is unused and in its original packaging.
Return procedure for SM6T150CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CAHE3/52 Tags
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