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Vishay General Semiconductor - Diodes Division SM6T150A-E3/52
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- Part No.:
- SM6T150A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150A-E3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,830
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Product details
Overview
SM6T150A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 128 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR), 207 V clamping voltage at 2.9 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and ICs against inductive switching transients in automotive power electronics.
For engineers reviewing the SM6T150A-E3/52 datasheet, SM6T150A-E3/52 pinout, SM6T150A-E3/52 application, or SM6T150A-E3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds VBR to limit transient overvoltage to ≤207 V. Its low-inductance SMB package and glass-passivated junction support fast response to sub-microsecond transients.
Rated for 600 W peak pulse power under standardized 10/1000 μs waveform, it delivers 2.9 A peak pulse current (IPPM) at clamping, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 143 V / 158 V at 1.0 mA test current - Ensures consistent breakdown threshold across production lots |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - Clamping voltage that defines maximum stress on protected device |
| PPPM | 600 W - Peak transient energy absorption capability under standard surge waveform |
| TJ max | +150 °C - Enables use in under-hood automotive environments without derating |
| RθJA | 100 °C/W - Thermal performance baseline for PCB pad layout design (0.2" × 0.2" copper) |
| Package | SMB (DO-214AA) - Industry-standard surface-mount outline with cathode band marking |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or low-side return path in unidirectional protection configuration |
| Cathode | Reverse voltage sensing / Clamping output node | Connected to protected line (e.g., 12 V rail, sensor signal); band-marked end defines polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| Glass passivated chip junction | Ensures stable VBR and low leakage (<1 μA at VWM) over temperature and lifetime |
| MSL Level 1 (260 °C peak) | Enables compatibility with standard lead-free reflow profiles without pre-baking |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive-grade reliability validation and PPAP compliance |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, relay bounce) |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in body control modules against load dump and inductive kickback. IC Role / Device Role: Unidirectional TVS clamp placed between battery rail and downstream DC/DC converter input. Use Value: Limits transient voltage to ≤207 V, preventing damage to 36 V-rated input stages while supporting 150 °C under-hood operation. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to long harnesses. IC Role / Device Role: Point-of-entry TVS on sensor signal line (e.g., 0–5 V ratiometric output) referenced to local ground. Use Value: Clamps ESD and cable discharge events to <207 V, preserving ADC accuracy and avoiding latch-up in microcontroller inputs. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Surge suppression on -48 V telecom power feeds exposed to lightning-induced surges. IC Role / Device Role: Unidirectional TVS installed between -48 V bus and chassis ground to shunt common-mode transients. Use Value: Withstands 600 W pulses and maintains <1 μA leakage at -41 V standoff, ensuring minimal standby power loss. | Use Scenario: Protecting gate drivers and logic inputs in washing machine motor inverters from back-EMF spikes. IC Role / Device Role: TVS placed across half-bridge high-side FET source-drain to clamp inductive turn-off voltage. Use Value: 207 V clamping prevents avalanche failure of 250 V-rated MOSFETs during 10 ms commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/52 | Same VWM/VBR/VC, but 400 W PPPM and SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump per ISO 7637-2 | Select when board space is constrained and surge energy is ≤400 W |
| 1.5SMC150A | Same electrical specs, but SMC (DO-214AB) package - larger footprint, lower RθJA (85 °C/W), higher IFSM (200 A) | Better thermal handling for repeated surges; requires larger PCB area | Choose for industrial systems requiring higher surge repetition tolerance and thermal margin |
Compared with SMAJ150A-E3/52 and 1.5SMC150A, SM6T150A-E3/52 offers optimal balance of 600 W surge capacity, SMB footprint, and MSL Level 1 process compatibility-making it preferred for space-constrained automotive and telecom designs where both peak power and reflow robustness matter.
Availability
SM6T150A-E3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC power feeds, and consumer appliance motor control requiring stable component supply and RoHS-compliant sourcing.
Supply support for SM6T150A-E3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is designed specifically for surface-mount transient voltage suppression in harsh environments-including automotive, industrial, and telecom-where high peak power, low clamping, and process compatibility are critical.
FAQ
What is the clamping voltage of SM6T150A-E3/52 under standard surge conditions?
The SM6T150A-E3/52 has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 2.9 A. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for downstream components. The SM6T150A-E3/52 maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is SM6T150A-E3/52 suitable for automotive applications?
Yes, SM6T150A-E3/52 is qualified for automotive use via its AEC-Q101-compatible variants (e.g., SM6T150AHE3_B). While the base SM6T150A-E3/52 is commercial grade, its 150 °C junction rating, 600 W surge capability, and MSL Level 1 reflow compatibility align with under-hood requirements. For certified automotive deployment, specify the HE3 suffix version of SM6T150A-E3/52.
What does the "-E3/52" suffix indicate in SM6T150A-E3/52?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7" diameter plastic tape and reel, with 750 units per reel. This ordering code confirms compliance with JESD201 Class 2 whisker resistance and J-STD-002 solderability standards. SM6T150A-E3/52 is not halogen-free-use "-M3/52" for halogen-free variant.
How does SM6T150A-E3/52 differ from bidirectional TVS diodes like SM6T150CA?
SM6T150A-E3/52 is unidirectional and conducts only during reverse overvoltage events, with cathode band marking. In contrast, SM6T150CA is bidirectional and suppresses transients in both polarities-suitable for AC lines or differential signals. The SM6T150A-E3/52 exhibits lower leakage (<1 μA at 128 V) than its bidirectional counterpart and is optimized for DC rail protection where polarity is fixed.
What PCB layout guidance applies to SM6T150A-E3/52 for optimal thermal and electrical performance?
For optimal performance, mount SM6T150A-E3/52 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's characterization data. Minimize trace length to reduce inductance; avoid vias near terminals. Use thermal reliefs only if necessary for assembly-full copper connection maximizes heat dissipation given its 100 °C/W RθJA. The SM6T150A-E3/52 benefits from symmetric pad geometry matching SMB outline dimensions (4.57 mm × 3.94 mm body).
SM6T150A-E3/52 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:
- 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):
- 2.9A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SM6T150A-E3/52 FAQ
1.How can I place an order for SM6T150A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150A-E3/52 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 SM6T150A-E3/52 reliable?
The price and inventory of SM6T150A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150A-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150A-E3/52?
SM6T150A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150A-E3/52 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 SM6T150A-E3/52?
For technical support, including SM6T150A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150A-E3/52 requirements.
6.How does Aetrix verify that SM6T150A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150A-E3/52 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 SM6T150A-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150A-E3/52?
All SM6T150A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150A-E3/52, 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 SM6T150A-E3/52 part is unused and in its original packaging.
Return procedure for SM6T150A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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