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Vishay General Semiconductor - Diodes Division SM6T150CA-E3/52
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- Part No.:
- SM6T150CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CA-E3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,341
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Product details
Overview
SM6T150CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 150 V standoff voltage (VWM), 207 V clamping voltage (VC) at 2.9 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T150CA-E3/52 datasheet, SM6T150CA-E3/52 pinout, SM6T150CA-E3/52 application, or SM6T150CA-E3/52 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMB package thermal data, AEC-Q101 qualification status, and direct alternative part comparisons - all grounded in Vishay's official SM6T series specification document 88385 (Rev. 09-Jan-2024).
Technical Context
The SM6T150CA-E3/52 operates as a bidirectional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable clamping performance across temperature.
Designed for surface-mount automated placement, it features low inductance and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, supporting 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 - Breakdown occurs within this range at 1.0 mA test current, confirming bidirectional symmetry |
| VC @ IPPM | 207 V at 2.9 A - Clamped voltage during 10/1000 μs transient, limiting downstream stress |
| PPPM | 600 W - Peak pulse power handling capability under standardized surge waveform |
| IFSM | Not applicable - Bidirectional device has no forward surge rating; only unidirectional variants specify 100 A |
| TJ max | +150 °C - Maximum allowable junction temperature, enabling use in under-hood automotive environments |
| RθJA | 100 °C/W - Thermal resistance defining temperature rise per watt dissipated on standard PCB pad layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as cathode or anode depending on transient polarity; no band marking required |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges in automotive ECUs |
| AEC-Q101 qualified (via HE3/HM3 variants) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure to protected ICs while maintaining fast response time |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage under humidity and thermal stress |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor outputs exposed to load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair (e.g., VR sensor output) to clamp ±200 V transients. Use Value: Prevents latch-up or damage to analog front-end amplifiers by limiting voltage to ≤207 V during 600 W surges. | Use Scenario: Safeguarding CANH/CANL lines in factory automation gateways subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Symmetrical clamping element between bus lines and ground, leveraging bidirectional conduction to absorb common-mode transients. Use Value: Maintains signal integrity below ISO 11898-2 fault thresholds while surviving repeated 10/1000 μs pulses up to 600 W. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Feedback |
Use Scenario: Shielding RS-485 transceivers on telecom line cards from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary protection device mounted at connector entry point, shunting energy before reaching PHY layer. Use Value: Achieves <1 ns response time and clamps to 207 V, keeping transceiver input voltage within safe operating area during 1 kV/0.5 kΩ surge tests. | Use Scenario: Securing hall-effect rotor position feedback signals in BLDC motor drives inside washing machines and HVAC systems. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp on low-voltage analog sensing path (3.3 V or 5 V). Use Value: Blocks 150 V transients induced by brush commutation or relay switching without distorting 10–100 kHz position waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Same VWM (128 V), identical SMB package, but 600 W rating tested per JEDEC JESD22-A114E (vs. Vishay's proprietary 10/1000 μs definition); slightly higher VC (213 V) | Approved for MIL-STD-883 Class B screening; preferred in defense/aerospace where qualification traceability is mandatory | Select SMBJ150CA when compliance with JEDEC-standardized surge testing protocols is required over automotive qualification. |
| 1.5KE150CA | Higher VC (243 V), larger DO-201AD package (5.3 mm × 5.3 mm vs. SMB's 4.6 mm × 3.9 mm), same 600 W rating but lower thermal efficiency (RθJA ≈ 120 °C/W) | Used in legacy industrial power supplies where board space is not constrained and through-hole assembly remains in place | Choose 1.5KE150CA only if existing PCB layout uses axial/DO-201AD footprints and rework to SMB is impractical. |
Compared with SMBJ150CA and 1.5KE150CA, the SM6T150CA-E3/52 offers tighter clamping (207 V), smaller footprint (SMB), and AEC-Q101 qualification - making it optimal for new automotive and space-constrained industrial designs requiring validated reliability and minimal PCB real estate.
Availability
SM6T150CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, telecom line cards, and consumer appliance motor control systems requiring stable component supply, RoHS-compliant packaging, and consistent surge immunity performance.
Supply support for SM6T150CA-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 high-reliability, high-efficiency, and application-specific optimization.
The SM6T Series is engineered specifically for surface-mount transient suppression in automotive, industrial, and telecom systems - balancing compact size, high-power surge handling, and qualification-grade consistency across temperature and lifetime.
FAQ
What is the clamping voltage of the SM6T150CA-E3/52 under a 10/1000 μs surge?
The SM6T150CA-E3/52 clamps to 207 V when subjected to its rated peak pulse current of 2.9 A using the 10/1000 μs waveform. This value is measured per Vishay's test conditions in document 88385 and reflects worst-case voltage seen by protected circuitry during standardized surge events. The SM6T150CA-E3/52 maintains this clamping performance across its full operating temperature range from −65 °C to +150 °C.
Is the SM6T150CA-E3/52 suitable for automotive applications?
Yes - while the SM6T150CA-E3/52 itself is commercial-grade (RoHS-compliant, E3 suffix), it belongs to the AEC-Q101-qualified SM6T family. Automotive-grade versions are designated with HE3 or HM3 suffixes (e.g., SM6T150CAHE3_B). The SM6T150CA-E3/52 shares identical electrical and mechanical specifications with those qualified variants, differing only in certification documentation and traceability.
Does the SM6T150CA-E3/52 have polarity markings on the package?
No - the SM6T150CA-E3/52 is a bidirectional TVS diode and carries no cathode band or polarity marking. Its SMB (DO-214AA) package features symmetrical terminals, allowing installation in either orientation without affecting clamping behavior. This simplifies layout and eliminates risk of incorrect placement during automated assembly.
What is the maximum reverse leakage current for the SM6T150CA-E3/52 at rated standoff voltage?
At its VWM of 128 V and TA = 25 °C, the SM6T150CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA. This low leakage ensures minimal power loss and signal distortion in high-impedance sensing circuits, such as those found in precision analog front-ends or battery-monitoring systems using the SM6T150CA-E3/52.
Can the SM6T150CA-E3/52 be used in place of a unidirectional TVS like SM6T150A?
No - the SM6T150CA-E3/52 is strictly bidirectional and cannot replace unidirectional types like SM6T150A in DC-biased applications. Unidirectional variants conduct only in reverse bias and block forward current, whereas the SM6T150CA-E3/52 conducts symmetrically. Substituting them risks unintended forward conduction or inadequate clamping in polarity-sensitive circuits protected by the SM6T150A.
SM6T150CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T150CA-E3/52 FAQ
1.How can I place an order for SM6T150CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CA-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 SM6T150CA-E3/52 reliable?
The price and inventory of SM6T150CA-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 SM6T150CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CA-E3/52?
SM6T150CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CA-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 SM6T150CA-E3/52?
For technical support, including SM6T150CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CA-E3/52 requirements.
6.How does Aetrix verify that SM6T150CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150CA-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 SM6T150CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150CA-E3/52?
All SM6T150CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CA-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 SM6T150CA-E3/52 part is unused and in its original packaging.
Return procedure for SM6T150CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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