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Vishay General Semiconductor - Diodes Division SM15T150A-E3/57T
- Part No.:
- SM15T150A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150A-E3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:914
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Product details
Overview
SM15T150A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 128 V stand-off voltage (VWM), 143–158 V breakdown voltage (VBR), and clamps to 207 V at 7.2 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines against lightning-induced and inductive-switching transients in automotive and industrial power electronics.
For engineers reviewing the SM15T150A-E3/57T datasheet, SM15T150A-E3/57T pinout, SM15T150A-E3/57T application, or SM15T150A-E3/57T equivalent, key selection criteria include unidirectional polarity, 128 V VWM, 207 V clamping voltage at 7.2 A, RoHS-compliant matte tin terminals, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (143–158 V), limiting transient energy by diverting surge current away from protected circuitry. Its low-inductance SMC package and glass-passivated junction ensure fast response (<1 ns) and stable performance under repetitive stress.
Designed for high-impedance source environments, it sustains 1500 W peak pulse power per 10/1000 μs waveform with thermal resistance of 75 °C/W (junction-to-ambient) and maximum junction temperature of 150 °C. Failure mode under overstress is short-circuit, enabling fail-safe system behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe DC/AC bias margin. |
| VBR @ IT = 1 mA | 143–158 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on during transients. |
| VC @ IPPM = 7.2 A | 207 V - Clamping voltage at 10/1000 μs peak pulse current; determines maximum stress on downstream components. |
| PPPM | 1500 W - Peak pulse power rating; supports protection against lightning surges (IEC 61000-4-5 Level 4) and motor-switching spikes. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on 8 mm × 8 mm copper pads; informs PCB thermal layout requirements. |
| TJ max. | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive and industrial ambient conditions. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile, RoHS-compliant matte tin-plated leads. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode | Avalanche conduction terminal / Transient sink | Banded end; connected to protected line (e.g., 12 V rail or sensor input); conducts surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 4 kV/2 Ω lightning surges without derating in standard layouts. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling per J-STD-020 MSL level 1. |
| Low inductance SMC package | Minimizes voltage overshoot during nanosecond-scale transients, critical for protecting fast-switching MOSFET gates. |
| AEC-Q101 qualification option (HE3/HM3) | Validates suitability for automotive powertrain and body electronics where zero-defect reliability is mandated. |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and lighting modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp positive-going surges above 128 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤207 V, preventing latch-up or gate oxide rupture. | Use Scenario: Shielding PLC analog input channels and encoder feedback lines from inductive kickback in servo drives. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal lines referenced to local ground, absorbing 10/1000 μs switching spikes up to 1500 W. Use Value: Maintains signal integrity below 207 V clamping level, avoiding ADC saturation and false position reporting. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Safeguarding PoE-powered equipment front-ends against induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on midspan injector outputs, coordinated with upstream GDTs. Use Value: Withstands 1500 W pulses while maintaining <1 μA leakage at 128 V, minimizing standby power loss. | Use Scenario: Protecting MCU GPIOs and relay drivers in washing machine control boards exposed to pump coil transients. IC Role / Device Role / Timing Role: Localized TVS on 5 V/3.3 V rails and switch-node traces, placed adjacent to protected ICs. Use Value: Fast avalanche response (<1 ns) and 75 °C/W RθJA allow compact placement without thermal runaway risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A | Lower peak pulse power (400 W), same VWM (128 V), SMC package, non-AEC-Q101 | Not suitable for lightning-level threats; limited to low-energy ESD and switching noise. | Select SMAJ150A only for cost-sensitive consumer applications with sub-1 kV threat levels. |
| SMCJ150A | Higher peak pulse power (3000 W), identical VWM/VBR/VC, same SMC package, AEC-Q101 qualified (HE3) | Over-spec'd for 1500 W needs; larger junction area increases capacitance slightly (≈100 pF vs. ≈50 pF). | Choose SMCJ150A when future-proofing against higher surge standards or extended lifetime requirements. |
Compared with SM15T150A-E3/57T, SMAJ150A offers lower cost but insufficient energy handling for industrial lightning protection, while SMCJ150A delivers headroom for evolving compliance requirements at marginally increased board space and capacitance.
Availability
SM15T150A-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, and telecom DC power feeds requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for SM15T150A-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 optoelectronics with emphasis on reliability and application-specific performance.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where failure modes must be predictable and clamping precision non-negotiable.
FAQ
What is the clamping voltage of SM15T150A-E3/57T at its rated peak pulse current?
The SM15T150A-E3/57T clamps to 207 V at its specified peak pulse current of 7.2 A under a 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, and defines the maximum voltage imposed on protected circuitry during surge events.
Is SM15T150A-E3/57T suitable for automotive applications?
SM15T150A-E3/57T itself is commercial-grade (E3 suffix), but the SM15T150AHE3 variant is AEC-Q101 qualified. For automotive use, specify the HE3 suffix version; the -E3/57T variant may be used in non-safety-critical subsystems pending internal qualification, though not certified.
What does the "-E3/57T" suffix indicate in SM15T150A-E3/57T?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/57T" specifies packaging in 7-inch diameter plastic tape and reel, with a base quantity of 850 units per reel - standard for automated SMT assembly lines.
How does SM15T150A-E3/57T differ from bidirectional TVS diodes like SM15T150CA?
SM15T150A-E3/57T is unidirectional and conducts only in reverse bias (cathode to anode), making it ideal for DC rail protection. SM15T150CA is bidirectional, symmetric in both polarities, and used for AC lines or data buses; they are not interchangeable without circuit redesign.
What is the thermal resistance and maximum junction temperature of SM15T150A-E3/57T?
SM15T150A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8 mm × 8 mm copper pads, and a maximum junction temperature (TJ) of +150 °C - enabling operation in under-hood automotive and industrial enclosures up to +85 °C ambient.
SM15T150A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SM15T150A-E3/57T FAQ
1.How can I place an order for SM15T150A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150A-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 SM15T150A-E3/57T reliable?
The price and inventory of SM15T150A-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 SM15T150A-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T150A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150A-E3/57T?
SM15T150A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150A-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 SM15T150A-E3/57T?
For technical support, including SM15T150A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150A-E3/57T requirements.
6.How does Aetrix verify that SM15T150A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T150A-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 SM15T150A-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T150A-E3/57T?
All SM15T150A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150A-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 SM15T150A-E3/57T part is unused and in its original packaging.
Return procedure for SM15T150A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150A-E3/57T Tags
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