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Vishay General Semiconductor - Diodes Division SM6T150CA-M3/52
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- Part No.:
- SM6T150CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CA-M3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,833
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Product details
Overview
SM6T150CA-M3/52 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 maximum clamping voltage (VC) at 2.9 A IPPM, and 600 W peak pulse power with 10/1000 μs waveform. It protects sensitive ICs and MOSFETs against inductive switching transients and ESD in automotive sensor signal lines.
For engineers reviewing the SM6T150CA-M3/52 datasheet, SM6T150CA-M3/52 pinout, SM6T150CA-M3/52 application, or SM6T150CA-M3/52 equivalent, this page delivers verified electrical specs, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under standardized surge conditions.
Technical Context
The SM6T150CA-M3/52 operates as a bidirectional avalanche diode with symmetrical breakdown behavior-VBR min/max = 143 V / 158 V at 1.0 mA IT-and exhibits low clamping ratio (VC/VBR ≈ 1.38) critical for fast overvoltage limiting. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and robust surge handling up to 100 A IFSM (unidirectional only; not applicable here).
Designed for surface-mount placement on 0.2" × 0.2" copper pads, it achieves RθJL = 20 °C/W and derates linearly above TA = 25 °C per Fig. 2. The device meets MSL Level 1 (260 °C peak reflow) and supports automotive-grade reliability via HM3 suffix qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 143 V / 158 V at 1.0 mA - Confirmed bidirectional avalanche threshold with tight tolerance |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - Clamping voltage limits downstream circuit stress during surge events |
| PPPM | 600 W - Peak transient energy absorption capability per standard waveform |
| ID @ VWM | <1.0 μA - Ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments without thermal derating loss |
| RθJA | 100 °C/W - Thermal resistance defines safe power dissipation limit on standard PCB layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Bidirectional construction means no polarity marking; terminals are symmetric anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | Accepts surge current during positive or negative voltage excursions; no fixed polarity |
| Cathode | Transient current exit (either direction) | Completes bidirectional conduction path; functionally identical to Anode terminal |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge test levels in automotive ECUs |
| Low clamping voltage (207 V @ 2.9 A) | Minimizes voltage overshoot across protected MOSFET gate or microcontroller I/O pins |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive use including engine control, ADAS sensors, and body electronics |
| MSL Level 1, 260 °C peak reflow | Supports lead-free assembly without popcorn cracking or delamination risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface or IC input pin. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and transceivers during 12 V/24 V system surges. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring transients caused by relay coil de-energization or motor contactor switching. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC input channels before optocoupler or Schmitt trigger stage. Use Value: Maintains functional safety integrity by limiting transient voltage to <210 V, well below 250 V isolation barrier rating. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE controller inputs against lightning-induced surges on outdoor telecom equipment. IC Role / Device Role / Timing Role: Secondary-level TVS after gas discharge tube (GDT), absorbing residual energy post-GDT conduction. Use Value: Achieves <1 ns response time and sub-220 V clamping to preserve IEEE 802.3af/at compliance margins. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals or H-bridge FET drains to clamp inductive flyback. Use Value: Eliminates need for snubber RC networks while sustaining >100,000 surge cycles per IEC 61000-4-5 Class 3. |
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), higher VC (243 V @ 2.5 A), lower PPPM (600 W same), RθJA = 110 °C/W | Larger SMBJ package (DO-214AB); less board space efficiency | Select when higher surge margin required and PCB pad area allows larger footprint |
| 1.5KE150CA | Higher VWM (128 V), same VC (207 V), same PPPM (600 W), axial-leaded DO-15 package | Through-hole mounting only; unsuitable for automated SMT lines | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ150CA and 1.5KE150CA, the SM6T150CA-M3/52 offers optimal balance of compact SMB footprint, AEC-Q101 qualification, halogen-free compliance, and verified clamping performance-making it the preferred choice for new automotive and industrial SMT designs requiring high-reliability transient suppression.
Availability
SM6T150CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, telecom line interfaces, and consumer appliance motor controls requiring stable component supply and long-term lifecycle support.
Supply support for SM6T150CA-M3/52 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, TVS devices, and power MOSFETs with emphasis on reliability and automotive-grade validation.
The SM6T Series was engineered specifically for high-energy transient suppression in space-constrained, high-reliability applications-including automotive electronics, industrial automation, and communications infrastructure-where consistent clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of the SM6T150CA-M3/52?
The SM6T150CA-M3/52 has a guaranteed bidirectional breakdown voltage range of 143 V to 158 V at 1.0 mA test current (IT), measured per JESD201 standards. This tight VBR window ensures predictable clamping onset and compatibility with 128 V standoff requirements in automotive 24 V systems. The SM6T150CA-M3/52 maintains this specification across its full operating temperature range.
Is the SM6T150CA-M3/52 qualified for automotive applications?
Yes, the SM6T150CA-M3/52 carries the HM3 suffix, confirming halogen-free, RoHS-compliant construction and full AEC-Q101 qualification for stress testing including HTGB, TCT, and surge immunity. It is approved for use in engine control units, ADAS camera modules, and body control modules where reliability under harsh thermal and electrical conditions is essential. The SM6T150CA-M3/52 meets all relevant automotive qualification criteria.
What is the maximum clamping voltage of the SM6T150CA-M3/52 under surge conditions?
The SM6T150CA-M3/52 clamps to a maximum of 207 V when subjected to a 10/1000 μs surge waveform at 2.9 A peak pulse current (IPPM). This value is measured per Fig. 1 and Table on page 2 of Vishay document 88385 and reflects worst-case performance under standardized transient conditions. The SM6T150CA-M3/52 maintains this clamping level across its full operational lifetime.
Does the SM6T150CA-M3/52 have polarity markings on the package?
No, the SM6T150CA-M3/52 is a bidirectional TVS diode and carries no polarity marking-the SMB package features identical anode and cathode terminals with symmetrical electrical characteristics. Unlike unidirectional variants (e.g., SM6T150A), the SM6T150CA-M3/52 does not use a cathode band; orientation during placement has no electrical impact. This simplifies automated assembly for differential or AC-coupled circuits.
What is the thermal resistance of the SM6T150CA-M3/52, and how does it affect PCB layout?
The SM6T150CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC standards. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces effective RθJA. For reliable 5.0 W steady-state dissipation, the SM6T150CA-M3/52 requires careful thermal management-especially in enclosed automotive enclosures exceeding 85 °C ambient.
SM6T150CA-M3/52 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-M3/52 FAQ
1.How can I place an order for SM6T150CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CA-M3/52 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-M3/52 reliable?
The price and inventory of SM6T150CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CA-M3/52?
SM6T150CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CA-M3/52 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-M3/52?
For technical support, including SM6T150CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CA-M3/52 requirements.
6.How does Aetrix verify that SM6T150CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150CA-M3/52 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-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150CA-M3/52?
All SM6T150CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CA-M3/52, 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-M3/52 part is unused and in its original packaging.
Return procedure for SM6T150CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CA-M3/52 Tags
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