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Vishay General Semiconductor - Diodes Division SM15T100CA-M3/9AT
- Part No.:
- SM15T100CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100CA-M3/9AT.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,452
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Product details
Overview
SM15T100CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode 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 signal lines and power rails in automotive sensor interfaces against lightning-induced and inductive switching transients.
For engineers reviewing the SM15T100CA-M3/9AT datasheet, SM15T100CA-M3/9AT pinout, SM15T100CA-M3/9AT application, or SM15T100CA-M3/9AT equivalent, key selection criteria include bidirectional clamping behavior, 137 V VC under 11 A IPPM, halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification readiness, and SMC package thermal performance with RθJL = 15 °C/W.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) of 114–126 V (min/max) measured at 1 mA test current. Its low clamping ratio (VC/VBR ≈ 1.09) ensures tight overvoltage protection during fast transients.
The device uses a glass-passivated silicon junction and is designed for high-source-impedance threat environments-such as I/O lines exposed to lightning surges or motor-switching noise-where failure mode is controlled short-circuit under overstress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 114 V / 126 V at 1 mA - defines symmetrical breakdown threshold in both directions |
| VC @ IPPM | 137 V at 11.0 A (10/1000 μs) - peak clamped voltage limiting downstream circuit stress |
| PPPM | 1500 W - surge energy handling capacity per single transient event |
| RθJL | 15 °C/W - low junction-to-lead thermal resistance enabling efficient heat transfer to PCB copper |
| TJ max. | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 8.13 mm footprint and 2.06 mm height |
Pinout & Package
SM15T100CA-M3/9AT is housed in an SMC (DO-214AB) package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Accepts surge current during positive voltage excursion relative to cathode |
| Cathode | Transient current entry (negative half-cycle) | Accepts surge current during negative voltage excursion relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power (10/1000 μs) | Supports robust immunity to IEC 61000-4-5 Level 4 (4 kV line-earth) surge events |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment |
| Low clamping voltage (137 V @ 11 A) | Minimizes voltage overshoot on protected 100 V-rated circuits, preserving downstream IC integrity |
| MSL Level 1, 260 °C reflow compatible | Enables standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) in engine control units exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transient energy before reaching signal conditioning circuitry. Use Value: Clamps transients to ≤137 V while maintaining 100 V DC operating margin-preventing latch-up or gate oxide damage in 12 V/24 V automotive electronics. | Use Scenario: Safeguarding PLC analog input modules and digital I/O cards connected to field wiring subject to lightning-induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on terminal blocks and signal conditioning inputs, coordinated with upstream series impedance. Use Value: Absorbs 1500 W surge energy within 1000 μs, limiting induced voltage rise to safe levels for 16-bit ADC drivers and microcontroller GPIOs. |
| Telecom Power Rail Protection | Consumer Device USB/DisplayPort ESD Hardening |
Use Scenario: Secondary surge protection on 48 V DC telecom power distribution boards feeding remote radio units and baseband processors. IC Role / Device Role / Timing Role: Fast-response clamping device placed after primary MOV-based protection to handle residual high-frequency transients. Use Value: Low-inductance SMC package ensures sub-nanosecond response, clamping 48 V rail excursions to <150 V before DC-DC converter input stage. | Use Scenario: Enhancing system-level ESD immunity on high-speed data lines (e.g., USB 3.2 Gen 2, DisplayPort 1.4) in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to suppress ±15 kV contact discharge per IEC 61000-4-2. Use Value: Maintains signal integrity with minimal added capacitance while delivering 1500 W surge capability beyond basic ESD spec requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100CA | 600 W PPPM, SMA package, higher RθJA (90 °C/W), same VWM/VC ratings | Limited to lower-energy threats; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤1 kV line-earth |
| SMCJ100CA | 1500 W PPPM, identical SMC package, VBR = 114–126 V, but non-halogen-free (E3 suffix) | Same clamping performance; lacks halogen-free certification required by some OEMs | Choose if RoHS compliance suffices without halogen-free mandate |
Compared with SMAJ100CA and SMCJ100CA, SM15T100CA-M3/9AT delivers identical 1500 W surge rating and SMC thermal performance while adding halogen-free construction and AEC-Q101 qualification path-making it optimal for automotive-grade designs requiring full material compliance and extended temperature reliability.
Availability
SM15T100CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom power rail hardening requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SM15T100CA-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The SM15T Series is engineered for high-energy transient suppression in harsh environments-designed to meet AEC-Q101 requirements and deliver consistent clamping performance across -65 °C to +150 °C operation.
FAQ
What is the clamping voltage of SM15T100CA-M3/9AT at its rated peak pulse current?
The SM15T100CA-M3/9AT has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at 11.0 A peak pulse current (IPPM). This value is measured under standardized test conditions per JEDEC standards and reflects the upper limit of voltage seen by protected circuitry during worst-case surge events.
Is SM15T100CA-M3/9AT suitable for automotive applications?
Yes, SM15T100CA-M3/9AT is qualified to AEC-Q101 when ordered with HM3 suffix variants. While the M3 suffix denotes halogen-free RoHS compliance, the underlying die and construction meet automotive reliability requirements-including temperature cycling, humidity testing, and surge endurance-making it appropriate for engine control, body electronics, and ADAS sensor protection.
How does the bidirectional design of SM15T100CA-M3/9AT affect circuit layout?
The bidirectional nature of SM15T100CA-M3/9AT eliminates polarity constraints during PCB placement-no cathode band marking exists, and either terminal may connect to either side of a differential or floating signal line. This simplifies layout for AC-coupled interfaces like CAN, RS-485, or audio lines, reducing risk of orientation-related assembly errors.
What is the thermal resistance from junction to lead (RθJL) for SM15T100CA-M3/9AT?
The SM15T100CA-M3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W. This low value enables efficient heat conduction from the silicon die into the PCB copper pads via the SMC package leads, supporting sustained power dissipation and improved reliability in thermally demanding applications such as under-hood automotive modules.
Does SM15T100CA-M3/9AT require additional series impedance for effective protection?
Yes, SM15T100CA-M3/9AT should be used with coordinated series impedance-typically a ferrite bead or current-limiting resistor-to shape the transient current waveform and prevent excessive peak current from exceeding the device's IPPM rating. Without proper impedance matching, the clamping voltage may rise above 137 V due to internal dynamic resistance effects during high di/dt events.
SM15T100CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SM15T100CA-M3/9AT FAQ
1.How can I place an order for SM15T100CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100CA-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 SM15T100CA-M3/9AT reliable?
The price and inventory of SM15T100CA-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 SM15T100CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T100CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100CA-M3/9AT?
SM15T100CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100CA-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 SM15T100CA-M3/9AT?
For technical support, including SM15T100CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100CA-M3/9AT requirements.
6.How does Aetrix verify that SM15T100CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T100CA-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 SM15T100CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T100CA-M3/9AT?
All SM15T100CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100CA-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 SM15T100CA-M3/9AT part is unused and in its original packaging.
Return procedure for SM15T100CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100CA-M3/9AT Tags
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