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Vishay General Semiconductor - Diodes Division SM15T150CAHE3_A/I
- Part No.:
- SM15T150CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHE3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,503
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Product details
Overview
SM15T150CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 207 V clamping voltage at 7.2 A IPPM, and AEC-Q101 qualified for automotive applications. It protects signal lines and power rails in sensor units and I/O interfaces against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T150CAHE3_A/I datasheet, SM15T150CAHE3_A/I pinout, SM15T150CAHE3_A/I application, or SM15T150CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, 150 V VWM tolerance, low clamping ratio (VC/VWM ≈ 1.38), AEC-Q101 qualification status, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) of 169–188 V measured at 1 mA IT, and clamps transients to ≤207 V at 7.2 A peak pulse current. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and robust surge handling up to 200 A IFSM in unidirectional mode - though not applicable here due to CA suffix.
Thermal resistance is RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), enabling reliable operation up to TJ = 150 °C. The device meets MSL Level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse voltage before clamping begins; defines operating margin for 12 V–48 V automotive bus protection |
| VBR (Breakdown Voltage) | 169–188 V at 1 mA - precise threshold where avalanche conduction initiates; ensures predictable turn-on under transient stress |
| VC (Clamping Voltage) | 207 V at 7.2 A (10/1000 μs) - limits downstream voltage stress during surge; clamping ratio VC/VWM = 1.38 supports robust IC-level protection |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy transients like ISO 7637-2 Pulse 5a (load dump) or IEC 61000-4-5 surges without degradation |
| TJ max. | 150 °C - enables use in under-hood automotive environments and industrial enclosures with elevated ambient temperatures |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for reflow and wave soldering |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; ordering code HE3 denotes qualification |
Pinout & Package
SM15T150CAHE3_A/I uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount outline with symmetrical cathode/anode terminals. No polarity marking is present on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity enables simplified PCB layout |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; symmetric construction eliminates orientation constraints during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN FD, LIN, RS-485) without polarity concerns |
| 1500 W peak pulse rating (10/1000 μs) | Withstands high-energy transients from inductive load switching and lightning coupling in automotive body control modules |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive electronics per stress test requirements including HTGB, TCT, and H3TRB - supports Tier-1 BOM inclusion |
| Low clamping inductance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >1 kV/ns), critical for protecting high-speed sensor interfaces |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing energy while limiting voltage to <207 V. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC front-ends during ISO 16750-2 transients. |
Use Scenario: Safeguarding RS-485 communication ports in PLC backplanes subjected to 4 kV EFT and 1 kV surge per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus lines, clamping common-mode surges before transceiver input stage. Use Value: Maintains data integrity by holding bus voltage within ±207 V during 10/1000 μs surges, avoiding receiver saturation or false triggering. |
| Consumer Power Adapter Input | Telecom DC Power Feed Protection |
Use Scenario: Input-stage transient suppression on 12 V/24 V wall adapters used in smart home hubs with external antenna connections. IC Role / Device Role / Timing Role: Primary-side bidirectional clamp across DC input rails, shunting induced surges from nearby RF sources or cable coupling. Use Value: Eliminates need for separate unidirectional devices on +VIN and –VIN, reducing BOM count and PCB area by 50%. |
Use Scenario: Protecting -48 V DC power feeds in remote radio head (RRH) base stations against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: High-power TVS mounted directly at feedthrough connector, clamping common-mode transients before DC/DC converter input. Use Value: Withstands 1500 W pulses without failure, ensuring uninterrupted operation during telecom-grade surge events (IEC 61000-4-5 Level 4). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | 600 W PPPM (vs. 1500 W); SMA package (smaller thermal mass); VWM = 150 V; VC = 243 V at 3.1 A | Limited to lower-energy threats (e.g., ESD, EFT); unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 | Select when space-constrained and threat level is sub-1 kA; verify clamping margin with downstream IC absolute max ratings. |
| SMCJ150CA | 1500 W PPPM; same SMC package; VWM = 150 V; VC = 243 V at 6.2 A (higher clamping than SM15T150CAHE3_A/I's 207 V) | Higher clamping voltage increases risk of overvoltage stress on protected ICs; less effective for low-voltage tolerant interfaces | Acceptable for robust microcontrollers or discrete logic, but avoid for precision analog or low-threshold MOSFET gates. |
Compared with SMAJ150CA and SMCJ150CA, SM15T150CAHE3_A/I delivers superior clamping performance (207 V vs. ≥243 V) and automotive qualification (AEC-Q101), making it optimal for safety-critical vehicle subsystems and high-reliability industrial communications where voltage margin and long-term stability are essential.
Availability
SM15T150CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapter inputs, and telecom DC feed protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SM15T150CAHE3_A/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, TVS, and MOSFETs with emphasis on high-reliability, high-power, and automotive-grade solutions.
The SM15T Series was designed specifically for high-energy transient suppression in harsh environments - targeting automotive powertrain, chassis, and ADAS systems where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SM15T150CAHE3_A/I?
The "CA" suffix in SM15T150CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical clamping in both forward and reverse directions. This eliminates polarity sensitivity during PCB layout and enables protection of AC-coupled or differential signal paths without requiring orientation verification. Unlike unidirectional "A" variants, SM15T150CAHE3_A/I has no cathode band marking.
Is SM15T150CAHE3_A/I qualified for automotive applications?
Yes, SM15T150CAHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling (TCT), and highly accelerated temperature-humidity bias (HAST), validating its suitability for under-hood and cabin-mounted automotive electronics such as body control modules and sensor interfaces.
What is the clamping voltage of SM15T150CAHE3_A/I at its rated peak pulse current?
SM15T150CAHE3_A/I clamps to a maximum of 207 V when subjected to a 10/1000 μs waveform at 7.2 A peak pulse current (IPPM). This value is specified in the Electrical Characteristics table on page 2 of Vishay document 88380 and reflects worst-case performance at TA = 25 °C with recommended 8.0 mm × 8.0 mm copper pads per terminal.
How does the SMC (DO-214AB) package of SM15T150CAHE3_A/I compare to SMA or SMB packages in surge handling?
The SMC package used by SM15T150CAHE3_A/I offers significantly higher thermal mass and lower thermal resistance (RθJA = 75 °C/W) than SMA (RθJA ≈ 100–120 °C/W) or SMB (RθJA ≈ 90–110 °C/W), enabling sustained 1500 W pulse dissipation. Its larger pad area (8.0 mm × 8.0 mm) improves heat spreading, making SM15T150CAHE3_A/I more robust against repeated surge events than smaller-outline alternatives.
Does SM15T150CAHE3_A/I require derating at elevated ambient temperatures?
Yes, SM15T150CAHE3_A/I must be derated above TA = 25 °C, as shown in Figure 2 of Vishay document 88380. At 85 °C ambient, peak pulse power drops to approximately 75% of 1500 W (≈1125 W), and at 125 °C, it falls to ~45% (≈675 W). Designers must apply this derating curve when sizing protection for high-temperature environments like engine compartments or sealed industrial enclosures.
SM15T150CAHE3_A/I 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:
- Active
- 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):
- 7.2A
- 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 (SMCJ)
SM15T150CAHE3_A/I FAQ
1.How can I place an order for SM15T150CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHE3_A/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 SM15T150CAHE3_A/I reliable?
The price and inventory of SM15T150CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T150CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHE3_A/I?
SM15T150CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHE3_A/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 SM15T150CAHE3_A/I?
For technical support, including SM15T150CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHE3_A/I requirements.
6.How does Aetrix verify that SM15T150CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHE3_A/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 SM15T150CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T150CAHE3_A/I?
All SM15T150CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHE3_A/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 SM15T150CAHE3_A/I part is unused and in its original packaging.
Return procedure for SM15T150CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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