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Vishay General Semiconductor - Diodes Division SM6T100A-M3/52
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- Part No.:
- SM6T100A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100A-M3/52.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,425
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Product details
Overview
SM6T100A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM = 85.5 V), 137 V clamping voltage at 4.4 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It features glass passivated junction, low inductance, and AEC-Q101 qualification readiness via HM3 suffix variants - used to protect automotive sensor signal lines and MOSFET gates against inductive switching transients.
For engineers reviewing the SM6T100A-M3/52 datasheet, SM6T100A-M3/52 pinout, SM6T100A-M3/52 application, or SM6T100A-M3/52 equivalent, key selection criteria include verified clamping performance at 4.4 A, unidirectional polarity with cathode band marking, halogen-free RoHS compliance (M3 suffix), and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
The SM6T100A-M3/52 operates as a unidirectional avalanche breakdown device, triggered when reverse voltage exceeds its 95–105 V breakdown range (VBR at 1 mA). Its clamping action limits transient-induced voltage spikes to ≤137 V during 10/1000 μs pulses, enabling robust protection of downstream ICs without forward conduction interference.
Designed for surface-mount automation, it uses a glass-passivated silicon junction housed in an SMB (DO-214AA) case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Thermal derating begins above TA = 25 °C per Fig. 2, with maximum junction temperature limited to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 85.5 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 95.0–105 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 137 V at IPPM = 4.4 A (10/1000 μs) - Actual voltage seen by protected circuit during worst-case transient |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; critical for thermal design margin |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with defined pad layout and MSL Level 1 rating |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current until breakdown, avoids DC path in protected line |
Pinout & Package
Package: SMB (DO-214AA), halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow), matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts reverse surge current to ground during overvoltage |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables suppression of high-energy transients common in automotive load-dump and inductive switch-off events |
| Glass passivated chip junction | Improves long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| Low inductance construction | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive production without compromising performance |
| MSL Level 1 rating (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or special handling |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transient energy before reaching IC input pins. Use Value: Limits induced voltage to ≤137 V during 4.4 A surges, preserving signal integrity and preventing latch-up in automotive-grade microcontrollers. | Use Scenario: Safeguarding PLC digital input modules connected to solenoid valves and contactors subject to inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across optocoupler input or microcontroller GPIO to absorb repetitive 600 W pulses. Use Value: Maintains 85.5 V working margin while clamping to 137 V, ensuring compatibility with 24 V industrial logic thresholds and avoiding false triggering. |
| Power Supply Rail Clamp | MOSFET Gate Protection |
Use Scenario: Secondary-side overvoltage suppression on DC-DC converter outputs feeding sensitive analog circuitry or ADC references. IC Role / Device Role / Timing Role: Parallel-connected TVS referenced to local ground, activated only during fault conditions exceeding nominal rail voltage. Use Value: Clamps 10/1000 μs transients to 137 V without loading the 85.5 V nominal rail during steady-state operation. | Use Scenario: Preventing gate oxide damage in N-channel power MOSFETs driven by microcontrollers in motor control H-bridges. IC Role / Device Role / Timing Role: Cathode tied to gate, anode to source; clamps negative-going spikes generated during high dv/dt switching transitions. Use Value: Blocks reverse gate-source voltage beyond −137 V, staying within safe oxide stress limits for 600 V+ MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A | Same SMB package, 100 V VWM, but lower PPPM (400 W); higher RθJA (125 °C/W) | Limited to lower-energy transients; less suitable for automotive load-dump per ISO 7637-2 | Select SMAJ100A only where surge energy is confirmed ≤400 W and thermal margin allows higher junction rise |
| 1.5SMC100A | Larger SMC (DO-214AB) package, same 100 V rating, 600 W PPPM, but higher VC (143 V at 4.2 A) | Requires larger PCB footprint; clamps to higher voltage, reducing protection margin for 3.3 V/5 V logic | Choose 1.5SMC100A only if board space permits and 143 V clamping is acceptable for protected circuit VDD tolerance |
Compared with SMAJ100A and 1.5SMC100A, the SM6T100A-M3/52 delivers identical 600 W surge capability in the smaller SMB footprint while achieving the lowest clamping voltage (137 V) among these three - directly improving voltage headroom for downstream 5 V or 3.3 V ICs.
Availability
SM6T100A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC-DC converter output clamping requiring stable component supply and halogen-free compliance.
Supply support for SM6T100A-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 and automotive-grade qualification.
The SM6T Series is engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 readiness are mandatory.
FAQ
What is the maximum clamping voltage of the SM6T100A-M3/52 under standard test conditions?
The SM6T100A-M3/52 has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at a peak pulse current (IPPM) of 4.4 A. This value is measured per JEDEC standards and reflects the actual voltage imposed on the protected circuit during surge events. The SM6T100A-M3/52 maintains this clamping performance across its specified operating temperature range, making it suitable for automotive and industrial applications where voltage margin is critical.
Is the SM6T100A-M3/52 RoHS-compliant and halogen-free?
Yes, the SM6T100A-M3/52 carries the M3 suffix, indicating it is both RoHS-compliant and halogen-free per Vishay's material specifications. This meets stringent environmental requirements for industrial and automotive production without sacrificing electrical performance. The SM6T100A-M3/52 uses matte tin-plated leads qualified to J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing.
Does the SM6T100A-M3/52 have AEC-Q101 qualification?
The base SM6T100A-M3/52 is not AEC-Q101 qualified; however, Vishay offers AEC-Q101-qualified versions under the HM3 suffix (e.g., SM6T100AHM3_X). These variants share identical electrical characteristics and SMB packaging but undergo additional stress testing per AEC-Q101. For automotive designs requiring formal qualification, SM6T100AHM3_X must be specified - the SM6T100A-M3/52 remains suitable for commercial and industrial use.
What is the thermal resistance of the SM6T100A-M3/52, and how does it affect layout?
The SM6T100A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard SMB pad layout per Vishay's recommended dimensions. To maintain safe junction temperatures, PCB layout must adhere to these pad sizes and avoid excessive trace length or isolation - undersized pads will increase RθJA and risk thermal runaway during repeated surges. The SM6T100A-M3/52 datasheet provides exact mounting dimensions in inches and millimeters.
How does the SM6T100A-M3/52 differ from bidirectional TVS diodes like SM6T100CA?
The SM6T100A-M3/52 is unidirectional and features a cathode band for polarity identification; it blocks forward current and clamps only in reverse bias. In contrast, SM6T100CA is bidirectional, with no polarity marking and symmetrical clamping in both directions. The SM6T100A-M3/52 is appropriate for DC-coupled lines where polarity is fixed (e.g., power rails, sensor outputs), whereas SM6T100CA suits AC-coupled or differential signal paths (e.g., RS-485, CAN). Electrical parameters including VWM and VC differ between the two types.
SM6T100A-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):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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)
SM6T100A-M3/52 FAQ
1.How can I place an order for SM6T100A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100A-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 SM6T100A-M3/52 reliable?
The price and inventory of SM6T100A-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 SM6T100A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T100A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100A-M3/52?
SM6T100A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100A-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 SM6T100A-M3/52?
For technical support, including SM6T100A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100A-M3/52 requirements.
6.How does Aetrix verify that SM6T100A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T100A-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 SM6T100A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T100A-M3/52?
All SM6T100A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100A-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 SM6T100A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T100A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100A-M3/52 Tags
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