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Vishay General Semiconductor - Diodes Division SM15T100AHM3/I
- Part No.:
- SM15T100AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100AHM3/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,879
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Product details
Overview
SM15T100AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 100 V standoff voltage (VWM), 137 V clamping voltage (VC) at 11.0 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines against lightning-induced and switching transients in automotive and industrial power electronics.
For engineers reviewing the SM15T100AHM3/I datasheet, SM15T100AHM3/I pinout, SM15T100AHM3/I application, or SM15T100AHM3/I equivalent, key selection criteria include verified clamping performance at 11 A IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJL = 15 °C/W) under real PCB pad conditions.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, designed to clamp transient overvoltages before they damage downstream components. Its 100 V stand-off voltage ensures compatibility with 80–100 V DC bus systems, while its 137 V clamping voltage at 11 A defines the maximum stress imposed on protected circuitry during surge events.
The SM15T100AHM3/I features low inductance and meets MSL Level 1 (260 °C reflow peak), enabling reliable automated placement. Its failure mode under overstress is short-circuit - a fail-safe behavior critical for system-level fault containment in automotive and industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - maximum continuous reverse operating voltage before clamping begins; sets operating margin above nominal 80–90 V rail voltages. |
| VBR (Breakdown Voltage) | 95–105 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on within ±5 % of VWM. |
| VC (Clamping Voltage) | 137 V at IPPM = 11.0 A (10/1000 μs) - maximum voltage seen by protected load during worst-case surge; determines required voltage headroom. |
| PPPM (Peak Pulse Power) | 1500 W - surge energy handling capability per IEC 61000-4-5 waveform; sufficient for lightning-induced transients on external I/O lines. |
| RθJL (Junction-to-Lead Thermal Resistance) | 15 °C/W - enables effective heat transfer to PCB copper pads; supports sustained 6.5 W power dissipation at TA = 50 °C with proper layout. |
| TJ max. | 150 °C - maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; ordering suffix HM3 confirms qualification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in unidirectional TVS configuration. | Provides return path for clamped surge current; must be routed to low-inductance ground plane to minimize voltage overshoot. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 100 V rail or signal trace). | Defines polarity-sensitive protection direction; band marking identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard SMC footprint. |
| Glass-passivated chip junction | Ensures stable breakdown characteristics and long-term reliability under repeated transient stress and humidity exposure. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive OEM environmental requirements and supports lead-free reflow assembly without compromising thermal performance. |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement for PCB assembly; compatible with standard high-volume SMT reflow profiles. |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), preserving clamping effectiveness in high-speed circuits. |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Protecting 100 V battery-fed control modules (e.g., body control units) from load-dump and alternator surge transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 100 V rail and chassis ground to clamp positive-going overvoltage spikes. Use Value: Clamps to 137 V at 11 A, limiting stress on 150 V-rated DC-DC converters and microcontrollers without requiring oversized input capacitors. |
Use Scenario: Safeguarding analog input channels of PLC analog I/O modules connected to 24–100 V field sensors. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal line to suppress coupling from adjacent motor drive wiring and relay coil switching noise. Use Value: 100 V VWM avoids false triggering during normal 80–100 V sensor excitation; 1500 W rating handles repetitive 10/1000 μs transients from nearby contactors. |
| Telecom DC Power Feeds | Renewable Energy Inverter DC Link |
|
Use Scenario: Overvoltage protection on -48 V or +100 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional TVS on DC feed line to absorb lightning-induced surges entering via outdoor cabling. Use Value: AEC-Q101 qualification ensures proven reliability in harsh outdoor cabinets; 137 V clamping prevents latch-up in GaN RF drivers. |
Use Scenario: Clamping transients on 100 V DC link of solar microinverters during MPPT switching transitions and grid fault recovery. IC Role / Device Role / Timing Role: Rail-to-ground TVS on DC bus to limit voltage overshoot during fast IGBT/MOSFET turn-off. Use Value: Low RθJL (15 °C/W) sustains repeated surge duty cycles without thermal runaway; halogen-free construction meets PV module fire safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/57T | Lower PPPM (400 W), same VWM (100 V), higher VC (165 V at 2.4 A), non-AEC-Q101, commercial grade only. | Not suitable for automotive or high-reliability industrial use; limited to low-energy surges in consumer-grade power supplies. | Select only if cost sensitivity outweighs surge robustness and qualification requirements. |
| 1.5KE100A | Through-hole DO-201 package, same VWM/VC specs, but 1500 W rating requires larger board area and manual assembly. | Lacks MSL Level 1 rating and automated placement support; incompatible with high-density SMT production lines. | Choose only when legacy through-hole design or thermal mass requirements justify larger footprint. |
Compared with SMAJ100A-E3/57T and 1.5KE100A, SM15T100AHM3/I delivers AEC-Q101 qualification, halogen-free compliance, and SMC-packaged manufacturability - making it the sole option meeting automotive Tier-1 production, high-surge immunity, and modern SMT assembly constraints simultaneously.
Availability
SM15T100AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, telecom DC power feeds, and renewable energy inverter DC link applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM15T100AHM3/I 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, efficiency, and application-specific optimization.
The SM15T Series was developed to deliver high-power transient suppression in compact SMC packages for automotive, industrial, and telecom systems where space, thermal performance, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SM15T100AHM3/I at its rated peak pulse current?
The SM15T100AHM3/I has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 11.0 A. This value is measured under standardized test conditions with specified PCB pad layout and is critical for determining voltage headroom needed by downstream components protected by the SM15T100AHM3/I.
Is SM15T100AHM3/I qualified for automotive applications?
Yes, SM15T100AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88380). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making SM15T100AHM3/I suitable for under-hood and body-control module applications.
What does the "HM3" suffix indicate in SM15T100AHM3/I?
The "HM3" suffix in SM15T100AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive environmental and reliability standards - a key identifier when selecting SM15T100AHM3/I for Tier-1 production.
What is the thermal resistance from junction to lead (RθJL) for SM15T100AHM3/I?
The SM15T100AHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as specified in the Vishay datasheet. This parameter enables accurate thermal modeling of power dissipation during surge events and informs PCB copper pad sizing to maintain safe junction temperatures below 150 °C during repeated SM15T100AHM3/I operation.
How does SM15T100AHM3/I differ from bidirectional TVS diodes like SM15T100CA?
SM15T100AHM3/I is unidirectional and features a cathode band marking, intended for DC rail protection where polarity is fixed. In contrast, SM15T100CA is bidirectional, lacks polarity marking, and clamps both positive and negative transients - making it suitable for AC lines or differential signal pairs. The SM15T100AHM3/I cannot replace SM15T100CA in AC-coupled applications without circuit redesign.
SM15T100AHM3/I 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SM15T100AHM3/I FAQ
1.How can I place an order for SM15T100AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100AHM3/I 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 SM15T100AHM3/I reliable?
The price and inventory of SM15T100AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T100AHM3/I is usually 5 days.
3.What payment methods are accepted for SM15T100AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100AHM3/I?
SM15T100AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100AHM3/I 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 SM15T100AHM3/I?
For technical support, including SM15T100AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100AHM3/I requirements.
6.How does Aetrix verify that SM15T100AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T100AHM3/I 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 SM15T100AHM3/I meets industry standards.
7.What is the process for return or replacement of SM15T100AHM3/I?
All SM15T100AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100AHM3/I, 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 SM15T100AHM3/I part is unused and in its original packaging.
Return procedure for SM15T100AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100AHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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