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Vishay General Semiconductor - Diodes Division SM6T150A-M3/52
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- Part No.:
- SM6T150A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150A-M3/52.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,167
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Product details
Overview
SM6T150A-M3/52 from Vishay General Semiconductor is a unidirectional 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 MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics against inductive switching transients.
For engineers reviewing the SM6T150A-M3/52 datasheet, SM6T150A-M3/52 pinout, SM6T150A-M3/52 application, or SM6T150A-M3/52 equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification path via HM3 variant.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 128 V), but avalanches sharply above breakdown (143–158 V at 1 mA) to divert surge current away from downstream components. Its low-inductance SMB package and glass-passivated junction ensure fast response (<1 ns) and stable performance across -65 °C to +150 °C junction temperature.
The device is optimized for single-pulse transients per IEC 61000-4-5 (10/1000 μs) and withstands 100 A non-repetitive forward surge (IFSM). Thermal design must account for RθJL = 20 °C/W to leads and derating above 25 °C ambient-power dissipation drops to 5.0 W at TA = 50 °C on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for circuit bias without leakage degradation. |
| VBR min/max | 143 V / 158 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on within 5% tolerance at test current. |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - Clamped voltage seen by protected IC during worst-case surge; defines minimum safe margin vs. device's absolute max rating. |
| PPPM | 600 W - Peak transient energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; dictates PCB copper area needed for thermal safety at full power. |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse current until breakdown, enabling DC-biased line protection. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), MSL Level 1, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge current sink (in reverse bias) | Connected to protected line; carries full transient current during clamping event. |
| Cathode | Forward current exit / Reference node (marked with band) | Connected to ground or lower-potential rail; establishes polarity-sensitive clamping threshold. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Validates immunity to severe transients per IEC 61000-4-5; supports protection of 24 V and 48 V industrial bus nodes. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR over temperature and lifetime; eliminates moisture-induced parameter drift. |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (<1 ns response); critical for protecting high-speed logic and gate drivers. |
| AEC-Q101 qualification path | HM3 variant available for automotive use; confirms robustness to temperature cycling, humidity, and mechanical shock per automotive standards. |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS diode clamping transient spikes before they reach power management ICs and microcontrollers. Use Value: Prevents latch-up or permanent damage to downstream regulators and CAN transceivers during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Fast-acting voltage clamp on 4–20 mA sensor loops and thermocouple inputs. Use Value: Maintains signal integrity and prevents ADC saturation or op-amp damage during 1 kV/500 A surge injection tests. |
| Telecom DC Power Feeds | MOSFET Gate Driver Protection |
Use Scenario: Shielding PoE-powered equipment front-end rectifiers and DC-DC converters from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input stage prior to primary-side controller. Use Value: Limits input voltage excursion to ≤207 V, preserving MOSFET VDS rating and avoiding secondary-side regulator failure. | Use Scenario: Guarding high-side N-channel MOSFET gates driven by isolated gate drivers in motor inverters. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) shunt clamp on gate-source path. Use Value: Absorbs Miller-induced voltage spikes without adding gate delay or distorting PWM edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A | Same VWM (150 V), lower PPPM (400 W), higher VC (243 V at 2.5 A), SMA package (higher RθJA = 150 °C/W) | Limited to lower-energy transients; less effective in high-power industrial environments | Select when cost sensitivity outweighs peak power requirement and board space allows larger thermal pad. |
| 1.5SMC150A | Same VWM (150 V), higher PPPM (1500 W), larger SMC package, higher VC (243 V at 6.2 A), RθJA = 100 °C/W | Better for repetitive surges; requires more PCB area and higher mounting force | Choose for mission-critical systems needing redundancy margin or where 1.5 kW pulse handling is mandated by system-level testing. |
Compared with SMAJ150A and 1.5SMC150A, the SM6T150A-M3/52 delivers optimal balance of compact SMB footprint, 600 W capability, and 207 V clamping-making it ideal for space-constrained 24–48 V systems where thermal management is limited to standard copper pads.
Availability
SM6T150A-M3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and MOSFET gate driver protection requiring stable component supply and halogen-free compliance.
Supply support for SM6T150A-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 optoelectronics with emphasis on reliability, efficiency, and automotive-grade qualification.
The SM6T Series is designed specifically for robust transient suppression in harsh environments-including automotive, industrial, and telecom-delivering consistent clamping performance, low leakage, and AEC-Q101-ready variants.
FAQ
What is the clamping voltage of SM6T150A-M3/52 under a 10/1000 μs surge?
The SM6T150A-M3/52 has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at 2.9 A peak pulse current. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events-critical for ensuring compatibility with downstream components' absolute maximum ratings.
Is SM6T150A-M3/52 suitable for automotive applications?
The SM6T150A-M3/52 itself is commercial-grade (M3 suffix), but Vishay offers the AEC-Q101 qualified HM3 variant (e.g., SM6T150AHM3_X). For automotive use, specify the HM3 version; the SM6T150A-M3/52 is appropriate for non-automotive industrial or telecom designs where halogen-free RoHS compliance and 150 V standoff are required.
What does the "M3" suffix mean in SM6T150A-M3/52?
The "M3" suffix in SM6T150A-M3/52 indicates halogen-free, RoHS-compliant construction with matte tin-plated leads, JESD 201 Class 2 whisker resistance, and compliance with Vishay's material categorization per doc# 99912. It distinguishes this variant from E3 (RoHS, non-halogen-free) and HM3 (AEC-Q101 qualified + halogen-free).
How does SM6T150A-M3/52 differ from bidirectional TVS diodes like SM6T150CA?
The SM6T150A-M3/52 is unidirectional and features a cathode band for polarity-sensitive placement; it blocks reverse current until breakdown. In contrast, SM6T150CA is bidirectional (no polarity marking) and clamps in both directions-used where AC-coupled or floating lines require symmetrical protection. The SM6T150A-M3/52 is selected for DC-biased rails like power supplies or gate drivers.
What is the thermal resistance and recommended PCB layout for SM6T150A-M3/52?
The SM6T150A-M3/52 has RθJA = 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain thermal safety at full 5.0 W power dissipation, use minimum pad dimensions per Vishay's outline drawing: 0.086" (2.18 mm) min width, 0.220" (5.59 mm) reference length, and ensure solder mask defined pads for optimal heat spreading.
SM6T150A-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:
- 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-M3/52 FAQ
1.How can I place an order for SM6T150A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150A-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 SM6T150A-M3/52 reliable?
The price and inventory of SM6T150A-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 SM6T150A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T150A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150A-M3/52?
SM6T150A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150A-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 SM6T150A-M3/52?
For technical support, including SM6T150A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150A-M3/52 requirements.
6.How does Aetrix verify that SM6T150A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T150A-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 SM6T150A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T150A-M3/52?
All SM6T150A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150A-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 SM6T150A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T150A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150A-M3/52 Tags
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