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Vishay General Semiconductor - Diodes Division SM15T10A-M3/9AT
- Part No.:
- SM15T10A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T10A-M3/9AT.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,855
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Product details
Overview
SM15T10A-M3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 14.5 V clamping voltage at 103 A IPPM, and 8.55 V stand-off voltage - designed to protect I/O lines and power rails in automotive and industrial control systems against lightning-induced and switching transients.
For engineers reviewing the SM15T10A-M3/9AT datasheet, SM15T10A-M3/9AT pinout, SM15T10A-M3/9AT application, or SM15T10A-M3/9AT equivalent, key selection criteria include verified clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on standard 8.0 mm × 8.0 mm copper pads.
Technical Context
The SM15T10A-M3/9AT employs a glass-passivated silicon junction optimized for low-inductance transient suppression. Its breakdown voltage is specified at 9.50–10.5 V (IT = 1.0 mA), with maximum reverse leakage of 10 μA at 8.55 V stand-off voltage.
Thermal design relies on RθJL = 15 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient, mounted on 8.0 mm × 8.0 mm pads). It operates across –65 °C to +150 °C and fails short-circuit under overstress - a defined safety behavior per IEC 61000-4-5 compliance context.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single high-energy surges typical of lightning or inductive load switching without degradation |
| Clamping Voltage VC | 14.5 V at 103 A IPPM - limits downstream voltage stress to safe levels for 3.3 V/5 V logic and MOSFET gate drivers |
| Stand-off Voltage VWM | 8.55 V - ensures no conduction during normal operation up to rated DC bus or signal line voltage |
| Breakdown Voltage VBR | 9.50–10.5 V at 1.0 mA - defines precise turn-on threshold for controlled avalanche clamping |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint, compatible with IPC-7351B SMC_STD land pattern |
| RoHS & Halogen Status | M3 suffix - halogen-free, RoHS-compliant, JESD201 Class 2 whisker resistant, MSL Level 1 (260 °C peak) |
Pinout & Package
SM15T10A-M3/9AT uses the standard SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on the body. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side return path | Provides low-impedance path to ground during transient events; must be routed with minimal loop inductance |
| Cathode | Current exit point in forward bias; marked by band; connects to protected line (e.g., 12 V rail or CAN_H) | Defines unidirectional clamping direction - only conducts when cathode voltage exceeds anode by ≥VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without derating in standard PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs - critical for safeguarding 5 V microcontrollers and sensor interfaces |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates risk of moisture-induced parameter drift in humid environments |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without popcorn cracking or delamination |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps 12 V rail to ≤14.5 V during 100 A/10 ms load dump events, preventing overvoltage shutdown of PMICs. |
Use Scenario: Analog output line (4–20 mA) from pressure sensor in factory automation PLC module. IC Role / Device Role / Timing Role: TVS installed at connector entry point before signal conditioning op-amp. Use Value: Limits induced EFT bursts (IEC 61000-4-4) to <15 V, preserving ADC reference integrity and avoiding saturation. |
| Telecom DC Power Input | Consumer USB Port ESD/Transient Suppression |
Use Scenario: –48 V DC input on telecom base station backplane card subjected to lightning coupling via long traces. IC Role / Device Role / Timing Role: Unidirectional SM15T10A-M3/9AT oriented to clamp negative transients toward chassis ground. Use Value: Withstands 1500 W surges while maintaining <10 μA leakage at –48 V nominal, ensuring low standby power loss. |
Use Scenario: VBUS line in USB 2.0 host port on smart speaker, vulnerable to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: TVS placed between USB connector and USB switch IC power pin. Use Value: Responds within nanoseconds to 8/20 μs surges, limiting VBUS overshoot to 14.5 V and protecting 5 V tolerant PHY. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ10A | Same SMC package, 1500 W rating, but VBR = 11.1–12.3 V and VC = 16.7 V at 89.2 A - higher clamping voltage and lower IPPM | Less effective for tight-margin 5 V systems due to 16.7 V clamping; better suited for 12 V+ rails where margin allows | Select SMAJ10A only if board layout accommodates higher VC and system tolerates 2.2 V greater clamping than SM15T10A-M3/9AT |
| ON Semiconductor 1.5SMC10A | Identical electrical specs (VBR 9.5–10.5 V, VC 14.5 V @ 103 A), same SMC package, but M3 suffix not offered - standard version is halogen-containing | Not suitable for halogen-free compliance programs; requires verification of material declaration for automotive Tier 1 supply chain | Choose 1.5SMC10A only when halogen content is unrestricted and AEC-Q101 qualification is not required |
Compared with SMAJ10A and 1.5SMC10A, SM15T10A-M3/9AT delivers identical clamping performance with guaranteed halogen-free construction and full MSL Level 1 reflow support - making it the preferred choice for automotive and green industrial designs requiring both robust surge handling and strict material compliance.
Availability
SM15T10A-M3/9AT is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply, long-term lifecycle assurance, and traceable halogen-free sourcing.
Supply support for SM15T10A-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive-grade qualification.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be predictable (short-circuit) and performance stable across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the SM15T10A-M3/9AT under a 10/1000 μs surge?
The SM15T10A-M3/9AT has a maximum clamping voltage (VC) of 14.5 V when subjected to its rated peak pulse current of 103 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - a critical parameter for ensuring compatibility with 5 V logic families and MOSFET gate oxide ratings. The SM15T10A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is the SM15T10A-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No, the SM15T10A-M3/9AT is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free RoHS compliance and commercial-grade reliability. For automotive use, Vishay specifies AEC-Q101 variants with HE3 or HM3 suffixes (e.g., SM15T10AHM3_A/I). The SM15T10A-M3/9AT is appropriate for industrial, telecom, and consumer applications where AEC-Q101 is not mandated but halogen-free compliance is required.
What does the "9AT" in SM15T10A-M3/9AT indicate?
The "9AT" in SM15T10A-M3/9AT is Vishay's preferred package code denoting 13-inch diameter plastic tape and reel packaging, with a base quantity of 3500 units per reel. This format supports high-volume SMT assembly and is compatible with standard pick-and-place feeders. The "M3" prefix confirms halogen-free, RoHS-compliant construction, while "SM15T10A" identifies the specific 10 V stand-off TVS device within the SM15T family.
How does the thermal resistance of the SM15T10A-M3/9AT affect PCB layout?
The SM15T10A-M3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W - but only when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve rated power dissipation, PCB layout must allocate sufficient copper area and avoid narrow traces. Reducing pad size increases RθJA, risking thermal runaway during repetitive surges. The SM15T10A-M3/9AT's thermal performance is validated only with this minimum pad configuration.
Can the SM15T10A-M3/9AT be used in bidirectional transient protection circuits?
No, the SM15T10A-M3/9AT is strictly unidirectional. Bidirectional variants in the SM15T family use the "CA" suffix (e.g., SM15T10CA). The "A" suffix in SM15T10A-M3/9AT explicitly denotes unidirectional polarity, with cathode identified by a band. Using SM15T10A-M3/9AT in bidirectional applications would result in forward conduction during negative transients, causing failure. Always verify polarity marking and select CA-suffixed parts for AC-coupled or symmetrical line protection.
SM15T10A-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):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- 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)
SM15T10A-M3/9AT FAQ
1.How can I place an order for SM15T10A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T10A-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 SM15T10A-M3/9AT reliable?
The price and inventory of SM15T10A-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 SM15T10A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T10A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T10A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T10A-M3/9AT?
SM15T10A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T10A-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 SM15T10A-M3/9AT?
For technical support, including SM15T10A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T10A-M3/9AT requirements.
6.How does Aetrix verify that SM15T10A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T10A-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 SM15T10A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T10A-M3/9AT?
All SM15T10A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T10A-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 SM15T10A-M3/9AT part is unused and in its original packaging.
Return procedure for SM15T10A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T10A-M3/9AT Tags
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