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Vishay General Semiconductor - Diodes Division SM15T100A-M3/9AT
- Part No.:
- SM15T100A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100A-M3/9AT.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,264
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Product details
Overview
SM15T100A-M3/9AT from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMC (DO-214AB) package, with 100 V standoff voltage (VWM), 105 V minimum breakdown voltage (VBR), and 137 V maximum clamping voltage (VC) at 11.0 A peak pulse current (IPPM) under 10/1000 μs waveform. It protects MOSFETs and signal lines in automotive power systems against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T100A-M3/9AT datasheet, SM15T100A-M3/9AT pinout, SM15T100A-M3/9AT application, or SM15T100A-M3/9AT equivalent, key selection criteria include clamping performance at rated IPPM, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (95–105 V), it avalanches to clamp transient energy within 137 V at 11.0 A, limiting stress on downstream ICs. Its low-inductance SMC package and glass-passivated junction support fast response (<1 ns) and reliable surge handling.
Rated for 1500 W peak pulse power (10/1000 μs), it sustains 200 A non-repetitive forward surge (IFSM) and operates from –65 °C to +150 °C. The M3 suffix confirms halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 85.5 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; 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 11.0 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines safe voltage headroom. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized lightning/transient waveforms; validates robustness per IEC 61000-4-5. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended 8.0 mm × 8.0 mm copper pads; guides PCB thermal layout. |
| Polarity & Marking | Unidirectional with cathode band - Ensures correct orientation during automated placement; prevents reverse-bias failure in DC systems. |
| Compliance | Halogen-free, RoHS-compliant (M3), MSL Level 1, JESD201 Class 2 - Meets automotive and industrial environmental and reliability standards. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); cathode indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference in unidirectional protection. | Defines current path during clamping; must be routed to lowest-impedance return path to minimize voltage overshoot. |
| Cathode | Current exit terminal in forward bias; marked with band; connects to protected line (e.g., 100 V rail or signal trace). | Ensures correct polarity for avalanche conduction; misorientation causes open-circuit failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Validates immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation in automotive power modules. |
| 137 V clamping at 11.0 A | Provides ≥20 V margin below 150 V max rating of common 100 V-rated MOSFETs, preventing gate oxide rupture. |
| Low-inductance SMC package | Minimizes parasitic L × di/dt voltage spikes during fast transients (<1 ns response), preserving clamping accuracy. |
| Halogen-free, RoHS-compliant (M3) | Enables compliance with EU ELV Directive and OEM sustainability requirements without compromising surge performance. |
| AEC-Q101 qualification path | HM3 variant supports automotive-grade validation (e.g., temperature cycling, HTRB), enabling use in engine control units. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
|
Use Scenario: Protecting 100 V battery-fed DC-DC converters in 48 V mild-hybrid vehicles from load-dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across input rails to clamp surges before they reach buck controller ICs. Use Value: Clamps 120 V transients to ≤137 V within nanoseconds, maintaining converter operation without latch-up or shutdown. |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers in 100 V-rated servo motor inverters against IGBT switching spikes. IC Role / Device Role / Timing Role: Primary rail protector on high-side DC bus, absorbing inductive kickback energy from motor windings. Use Value: Limits voltage overshoot to 137 V at 11 A, preventing false triggering of overvoltage protection in isolated gate drivers. |
| Telecom Power Supply Input | Consumer Appliance Control Board |
|
Use Scenario: Shielding AC/DC front-end rectifiers and PFC controllers in 100 V telecom power supplies from lightning-induced surges on primary side. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOV, providing precise clamping where MOV let-through voltage exceeds IC ratings. Use Value: Delivers 137 V clamping vs. typical MOV let-through >200 V, reducing stress on 150 V-rated bridge rectifiers and startup ICs. |
Use Scenario: Protecting microcontroller I/O and relay driver circuits in smart HVAC control boards exposed to inductive relay coil transients. IC Role / Device Role / Timing Role: Localized TVS on 24 V control rail, placed adjacent to relay coil flyback diode to suppress residual ringing. Use Value: Reduces 200 V relay spike to 137 V in <10 ns, eliminating MCU reset events and contact arcing in relay contacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A | Lower PPPM (400 W), same VWM (85.5 V), higher VC (165 V at 2.4 A), SMA package (smaller thermal mass). | Limited to lower-energy threats (e.g., ESD, low-energy switching noise); unsuitable for lightning-level surges. | Select SMAJ100A only for space-constrained consumer designs where 1500 W capability is unnecessary. |
| SMCJ100A | Same PPPM (1500 W), identical VWM/VBR/VC specs, but E3 suffix (RoHS-compliant, not halogen-free) and no M3 qualification path. | Acceptable for commercial/industrial use but fails automotive halogen-free mandates (e.g., VW 80101). | Choose SMCJ100A if halogen-free content is not required and cost is prioritized over automotive compliance. |
Compared with SMAJ100A and SMCJ100A, SM15T100A-M3/9AT uniquely delivers 1500 W surge capacity in a halogen-free, automotive-qualifiable package-enabling single-part sourcing across commercial and Tier-1 automotive programs without redesign.
Availability
SM15T100A-M3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, telecom power supply input, and consumer appliance control board applications requiring stable component supply and long-term production continuity.
Supply support for SM15T100A-M3/9AT 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SM15T Series was engineered for high-energy transient suppression in harsh environments-targeting 48 V/100 V automotive subsystems, industrial motor controls, and telecom infrastructure where 1500 W surge immunity and halogen-free compliance are mandatory.
FAQ
What is the clamping voltage of SM15T100A-M3/9AT at its rated peak pulse current?
The SM15T100A-M3/9AT has a maximum clamping voltage (VC) of 137 V when subjected to its rated 11.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T100A-M3/9AT maintains this clamping performance across its specified operating temperature range.
Is SM15T100A-M3/9AT suitable for automotive applications?
SM15T100A-M3/9AT is halogen-free and RoHS-compliant per M3 suffix, and belongs to the AEC-Q101-qualified SM15T family-though the M3/9AT variant itself is commercial grade. For full automotive qualification, the HM3 suffix (e.g., SM15T100AHM3_A/I) must be selected. The SM15T100A-M3/9AT shares identical electrical and thermal specs with HM3 variants, enabling drop-in prototyping before final AEC-Q101 release.
What does the "M3/9AT" suffix indicate in SM15T100A-M3/9AT?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "9AT" specifies packaging in 13-inch diameter plastic tape and reel, with 3500 units per reel. This format supports high-volume SMT assembly and meets IPC-J-STD-020 MSL Level 1 requirements (peak reflow ≤260 °C). The SM15T100A-M3/9AT is fully compatible with standard SMC footprint layouts.
How does SM15T100A-M3/9AT compare to bidirectional TVS diodes like SM15T100CA?
SM15T100A-M3/9AT is unidirectional and features a cathode band for polarity-sensitive placement; SM15T100CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SM15T100A-M3/9AT offers lower leakage (<1 μA at 85.5 V) than bidirectional equivalents, making it preferred for DC systems where reverse leakage could affect bias networks. Both share identical PPPM (1500 W) and thermal specs.
What PCB layout guidance applies to SM15T100A-M3/9AT for optimal thermal performance?
Vishay specifies mounting SM15T100A-M3/9AT on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve the published RθJA of 75 °C/W. Traces to the SM15T100A-M3/9AT must be short and wide to minimize inductance; ground and power planes should be solid beneath the device. Thermal vias under pads improve heat dissipation-critical for repeated surge events in motor drive applications.
SM15T100A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, 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):
- 11A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SM15T100A-M3/9AT FAQ
1.How can I place an order for SM15T100A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100A-M3/9AT 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 SM15T100A-M3/9AT reliable?
The price and inventory of SM15T100A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T100A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T100A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100A-M3/9AT?
SM15T100A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100A-M3/9AT 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 SM15T100A-M3/9AT?
For technical support, including SM15T100A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100A-M3/9AT requirements.
6.How does Aetrix verify that SM15T100A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T100A-M3/9AT 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 SM15T100A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T100A-M3/9AT?
All SM15T100A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100A-M3/9AT, 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 SM15T100A-M3/9AT part is unused and in its original packaging.
Return procedure for SM15T100A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100A-M3/9AT Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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