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Vishay General Semiconductor - Diodes Division SM15T150CA-E3/57T
- Part No.:
- SM15T150CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CA-E3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,528
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Product details
Overview
SM15T150CA-E3/57T 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), 207 V clamping voltage at 7.2 A IPPM, and 128 V standoff voltage - used to protect automotive sensor signal lines and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T150CA-E3/57T datasheet, SM15T150CA-E3/57T pinout, SM15T150CA-E3/57T application, or SM15T150CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 150 °C max junction temperature, low-inductance SMC package, and compliance with UL 94 V-0 molding compound requirements.
Technical Context
The SM15T150CA-E3/57T operates as a voltage-clamped transient protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its 128 V standoff voltage (VWM) and 143–158 V breakdown range (VBR) ensure reliable blocking below threat thresholds while enabling fast response to overvoltage events.
It delivers 1500 W peak pulse power handling per 10/1000 μs waveform under standard mounting conditions (8.0 mm × 8.0 mm copper pads), with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling robust surge immunity without active cooling in space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy lightning surges without failure when mounted on recommended 8.0 mm × 8.0 mm copper pads |
| Standoff Voltage (VWM) | 128 V - blocks normal operating voltages up to this level while remaining non-conductive |
| Breakdown Voltage (VBR) | 143–158 V at 1 mA - defines the onset of avalanche conduction during transient events |
| Clamping Voltage (VC) | 207 V at 7.2 A IPPM - limits downstream circuit voltage during worst-case surge, protecting 150 V-rated components |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and industrial environments with wide thermal cycling |
| Package | SMC (DO-214AB) - surface-mount, low-profile, RoHS-compliant, UL 94 V-0 rated molding compound |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SM15T150CA-E3/57T uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, no polarity marking (bidirectional), and mechanical dimensions of 7.11 mm × 6.22 mm × 2.62 mm (L × W × H). Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | Acts as cathode during positive half-cycle; enables symmetrical clamping in AC or bidirectional DC systems |
| Cathode | Transient current exit point (either direction) | Acts as anode during negative half-cycle; eliminates need for orientation-aware placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables protection against IEC 61000-4-5 Level 4 (4 kV surge) on industrial I/O lines without derating |
| Bidirectional clamping symmetry | Eliminates polarity concerns in AC-coupled or floating signal paths such as CAN bus stubs or sensor bridges |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, reducing stress on downstream ESD diodes and interface ICs |
| AEC-Q101 qualification (HE3 suffix variant) | Confirms suitability for automotive applications including engine control modules and ADAS sensor interfaces |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; compatible with standard SMT assembly without dry-pack requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure and temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground pins to shunt transients before reaching precision ADC front-end. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/100 ms) by limiting clamped voltage to 207 V while surviving >1000 surges. |
Use Scenario: Shielding digital input terminals of programmable logic controllers from induced surges on factory floor wiring routed near motor drives. IC Role / Device Role / Timing Role: Primary surge suppression device installed at connector entry point, upstream of optocoupler isolation barrier. Use Value: Absorbs 1500 W lightning surges (IEC 61000-4-5) without degradation, preserving long-term reliability of isolated input stage. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers in outdoor telecom cabinets subjected to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Fast-response TVS connected between differential pair and ground to suppress common-mode transients before receiver inputs. Use Value: Clamps 10/1000 μs surges to ≤207 V within <1 ns, preventing latch-up or permanent damage to ±12 V tolerant transceivers. |
Use Scenario: Protecting microcontroller GPIOs driving relay coils and brushless fan motors in smart home HVAC units. IC Role / Device Role / Timing Role: Snubber-style TVS across inductive load terminals to suppress flyback voltage spikes during MOSFET turn-off. Use Value: Limits reverse spike to 207 V, allowing use of 250 V-rated MOSFETs without snubber capacitors or RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150CA | Same 150 V VWM, 207 V VC, but lower PPPM (400 W); SMC package with identical footprint | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD or local switching noise | Select SMAJ150CA only if system-level surge testing confirms <400 W requirement and cost sensitivity outweighs headroom needs |
| ON Semiconductor 1.5SMC150CA | Identical electrical specs and SMC package; AEC-Q101 qualified only in HE3 variant (1.5SMC150CAHE3) | Requires explicit ordering of HE3 suffix to match automotive qualification of SM15T150CA-E3/57T | Choose 1.5SMC150CAHE3 when dual-sourcing across Vishay and ON Semi is required for supply chain resilience |
Compared with SMAJ150CA and 1.5SMC150CAHE3, SM15T150CA-E3/57T provides guaranteed 1500 W surge handling and native AEC-Q101 qualification in its commercial-grade E3 variant - eliminating need for suffix-specific ordering to achieve automotive reliability in production designs.
Availability
SM15T150CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface circuits requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SM15T150CA-E3/57T 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 power MOSFETs with emphasis on high-reliability, high-efficiency solutions.
The SM15T Series was developed specifically for high-power transient suppression in automotive, industrial, and telecom infrastructure - delivering 1500 W surge capability in compact SMC packaging with AEC-Q101 qualification built-in.
FAQ
What is the clamping voltage of SM15T150CA-E3/57T at its rated peak pulse current?
The SM15T150CA-E3/57T has a maximum clamping voltage (VC) of 207 V at 7.2 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, ensuring realistic board-level performance for surge protection design validation.
Is SM15T150CA-E3/57T qualified for automotive applications?
Yes, SM15T150CA-E3/57T is RoHS-compliant and commercially qualified; however, its AEC-Q101 qualification applies to the HE3 variant (e.g., SM15T150CAHE3). The E3 suffix indicates commercial grade with MSL Level 1 and JESD201 Class 2 whisker resistance - suitable for non-automotive industrial use unless full AEC-Q101 compliance is mandated.
What does the "CA" suffix mean in SM15T150CA-E3/57T?
The "CA" suffix in SM15T150CA-E3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., SM15T150A), it has no cathode marking and functions identically regardless of voltage polarity applied across its terminals.
What is the standoff voltage (VWM) rating for SM15T150CA-E3/57T?
The standoff voltage (VWM) for SM15T150CA-E3/57T is 128 V - the maximum continuous reverse working voltage the device can block without significant leakage current. At this voltage, reverse leakage current remains ≤1.0 μA, ensuring minimal power loss and signal interference in protected circuits.
Does SM15T150CA-E3/57T require special PCB layout considerations?
Yes, SM15T150CA-E3/57T must be mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal to achieve its rated 1500 W peak pulse power. Smaller pads reduce thermal dissipation and cause premature failure under surge conditions; trace inductance should also be minimized to preserve clamping speed and effectiveness.
SM15T150CA-E3/57T 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-E3/57T FAQ
1.How can I place an order for SM15T150CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CA-E3/57T 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-E3/57T reliable?
The price and inventory of SM15T150CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T150CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CA-E3/57T?
SM15T150CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CA-E3/57T 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-E3/57T?
For technical support, including SM15T150CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CA-E3/57T requirements.
6.How does Aetrix verify that SM15T150CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T150CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T150CA-E3/57T?
All SM15T150CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SM15T150CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CA-E3/57T Tags
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