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Vishay General Semiconductor - Diodes Division SM15T150CA-E3/9AT
- Part No.:
- SM15T150CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CA-E3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,287
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Product details
Overview
SM15T150CA-E3/9AT 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 operating junction temperature up to +150 °C. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T150CA-E3/9AT datasheet, SM15T150CA-E3/9AT pinout, SM15T150CA-E3/9AT application, or SM15T150CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, low-inductance SMC package, AEC-Q101 qualification eligibility (via HE3/HM3 suffix variants), and verified 1500 W surge handling under standardized 10/1000 μs waveform conditions.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities with identical breakdown (VBR min/max = 143–158 V) and clamping behavior. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and robust surge endurance across -65 °C to +150 °C junction range.
The device delivers 1500 W peak pulse power per JEDEC-standard 10/1000 μs waveform when mounted on 8.0 mm × 8.0 mm copper pads, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling effective heat dissipation in compact PCB layouts without heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 120–150 V DC bus or signal lines. |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Tight 5% tolerance ensures predictable turn-on during transient events without premature conduction. |
| VC (Clamping Voltage) | 207 V at IPPM = 7.2 A (10/1000 μs) - Limits downstream voltage stress to <210 V during worst-case surge, protecting 200 V-rated MOSFETs or ICs. |
| PPPM (Peak Pulse Power) | 1500 W - Supports high-energy threats like lightning-induced surges on external I/O lines per IEC 61000-4-5 Level 3/4. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Negligible standby current preserves battery life in always-on automotive modules and low-power sensors. |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height, compatible with automated pick-and-place. |
Pinout & Package
SMC (DO-214AB) package with two terminals: symmetrical bidirectional configuration has no polarity marking; both ends function identically as anode/cathode pair depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Bidirectional Anode/Cathode | Acts as cathode during positive transients and anode during negative transients; enables symmetrical clamping without orientation constraints. |
| Terminal 2 | Bidirectional Anode/Cathode | Complementary terminal forming full bidirectional path; requires no PCB polarity alignment during placement. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against high-energy lightning surges (IEC 61000-4-5) on industrial fieldbus or automotive CAN/FlexRay lines. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs-critical for safeguarding 3.3 V or 5 V logic interfacing with 150 V supply rails. |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures long-term reliability and stable electrical parameters under thermal cycling and humidity exposure in automotive under-hood environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load-dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient voltage to ≤207 V during 7.2 A surge events, preserving signal integrity and preventing latch-up. Use Value: Eliminates need for discrete RC snubbers or additional series impedance while maintaining sub-1 μA leakage for precision sensor bias networks. |
Use Scenario: Shielding PLC digital input modules connected to 24 V DC field wiring subject to relay coil flyback and ESD from operator touch. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp absorbing 1500 W surges without degradation across >10⁵ events. Use Value: Extends mean time between failures (MTBF) of input circuitry by suppressing >99% of transients exceeding 150 V, reducing field return rates. |
| Telecom Power Rail Protection | Consumer Power Adapter Interface |
Use Scenario: Safeguarding 48 V PoE midspan injectors and PSE controllers against induced surges from Ethernet cable runs near AC mains. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across primary-side DC bus to shunt surge energy before it reaches DC-DC controller ICs. Use Value: Maintains system uptime by preventing catastrophic failure of MOSFET drivers during lightning-induced common-mode transients. |
Use Scenario: Protecting USB-C PD port CC lines and VBUS monitoring circuits in wall adapters subjected to user-handling ESD and AC line coupling. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) TVS suppressing ±8 kV contact ESD (IEC 61000-4-2) without distorting high-speed signaling. Use Value: Enables compliance with UL 62368-1 and EN 62368-1 without sacrificing signal fidelity on 3 A/20 V PD negotiation lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Lower PPPM (400 W), same VWM (150 V), larger SMA package (DO-214AC), higher RθJA (100 °C/W) | Not suitable for lightning-level threats; limited to low-energy ESD and switching noise in space-constrained consumer PCBs | Select SMAJ150CA only if surge threat level is ≤400 W and board area allows larger footprint; verify thermal derating at >70 °C ambient. |
| SMCJ150CA | Same PPPM (1500 W), identical VWM/VC specs, but larger SMC package with 1.5× higher thermal mass and RθJL = 10 °C/W | Better sustained surge handling in high-temperature industrial enclosures; preferred for >100,000-cycle lifetime requirements | Choose SMCJ150CA when extended thermal margin or legacy SMCJ footprint compatibility is required; note 0.5 mm taller profile. |
Compared with SMAJ150CA and SMCJ150CA, the SM15T150CA-E3/9AT delivers identical 1500 W surge capability in a lower-profile SMC variant with optimized RθJL (15 °C/W) for faster transient heat dissipation-making it ideal for thermally dense automotive ECUs where height clearance and rapid thermal recovery are critical.
Availability
SM15T150CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, and telecom PoE power rail protection requiring stable component supply, RoHS-compliant packaging, and traceable sourcing.
Supply support for SM15T150CA-E3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, power handling, and automotive-grade qualification.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of SM15T150CA-E3/9AT at its rated peak pulse current?
The SM15T150CA-E3/9AT clamps to a maximum of 207 V when subjected to its specified peak pulse current (IPPM) of 7.2 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and reflects worst-case voltage seen by downstream components during surge events. The SM15T150CA-E3/9AT maintains this performance across its full operating temperature range (-65 °C to +150 °C).
Is SM15T150CA-E3/9AT RoHS-compliant and halogen-free?
Yes, the SM15T150CA-E3/9AT carries the "E3" suffix, indicating RoHS-compliance per EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance. It is not halogen-free; for halogen-free compliance, the "M3" suffix variant (e.g., SM15T150CA-M3/9AT) must be selected. Both variants use matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
Does SM15T150CA-E3/9AT require polarity-aware PCB layout?
No, the SM15T150CA-E3/9AT is a bidirectional TVS diode with symmetrical terminal construction and no polarity marking on the SMC (DO-214AB) package. Either terminal may connect to either side of the protected line, eliminating orientation errors during automated assembly and simplifying layout for differential or AC-coupled signal paths.
What is the maximum operating temperature for SM15T150CA-E3/9AT?
The SM15T150CA-E3/9AT has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of -65 °C to +150 °C. Its thermal resistance values-RθJA = 75 °C/W and RθJL = 15 °C/W-are specified for mounting on 8.0 mm × 8.0 mm copper pads, enabling reliable operation in under-hood automotive and industrial control cabinet environments.
Can SM15T150CA-E3/9AT be used in AEC-Q101 qualified designs?
The base SM15T150CA-E3/9AT is commercial-grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes SM15T150CAHE3_A/I (RoHS-compliant, AEC-Q101) and SM15T150CAHM3_A/I (halogen-free, RoHS-compliant, AEC-Q101). These variants undergo full stress testing per AEC-Q101 Rev D and are intended for automotive powertrain and chassis applications where qualification is mandatory.
SM15T150CA-E3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T150CA-E3/9AT FAQ
1.How can I place an order for SM15T150CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CA-E3/9AT 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 SM15T150CA-E3/9AT reliable?
The price and inventory of SM15T150CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T150CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CA-E3/9AT?
SM15T150CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CA-E3/9AT 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 SM15T150CA-E3/9AT?
For technical support, including SM15T150CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CA-E3/9AT requirements.
6.How does Aetrix verify that SM15T150CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T150CA-E3/9AT 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 SM15T150CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T150CA-E3/9AT?
All SM15T150CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CA-E3/9AT, 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 SM15T150CA-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T150CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CA-E3/9AT Tags
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