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Vishay General Semiconductor - Diodes Division SM15T36AHM3_A/I
- Part No.:
- SM15T36AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36AHM3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,373
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Product details
Overview
SM15T36AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR), and 49.9 V clamping voltage (VC) at 30 A peak pulse current - used to protect automotive power rails and I/O lines against lightning-induced and inductive switching transients.
For engineers reviewing the SM15T36AHM3_A/I datasheet, SM15T36AHM3_A/I pinout, SM15T36AHM3_A/I application, or SM15T36AHM3_A/I equivalent, key selection criteria include clamping performance under 30 A IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and unidirectional polarity with cathode band marking.
Technical Context
The SM15T36AHM3_A/I employs a glass-passivated silicon junction optimized for low-inductance transient suppression. Its 10/1000 μs waveform rating targets high-energy threats such as lightning surges and motor coil switching transients, with failure mode specified as short-circuit under overstress.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 (260 °C peak reflow) and supports automotive-grade reliability via AEC-Q101 qualification - confirmed by HM3 suffix and "HM3_A/I" ordering code indicating halogen-free, RoHS-compliant, AEC-Q101-qualified variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe DC/AC bias limit for protected line. |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA test current - ensures reliable turn-on above normal operating voltage while avoiding false triggering. |
| VC @ IPPM | 49.9 V at 30 A (10/1000 μs) - clamping voltage seen by downstream circuitry during worst-case surge; limits stress on ICs/MOSFETs. |
| PPPM | 1500 W - peak transient power handling capacity; enables protection against IEC 61000-4-5 Level 4 (4 kV) surges with appropriate source impedance. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard PCB pad layout; determines temperature rise under 6.5 W steady-state dissipation. |
| TJ max | +150 °C - maximum allowable junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, 0.320" × 0.246" footprint (8.13 mm × 6.22 mm), cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction; connected to protected line's lower-potential side. | Provides low-impedance path to ground during reverse-biased transient clamping; must be routed with minimal trace inductance. |
| Cathode | Current exit point in forward conduction; marked by black band; connected to system ground or reference rail. | Serves as clamping reference node; ties directly to low-impedance ground plane to ensure predictable VC under surge conditions. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against high-energy transients like ISO 7637-2 Pulse 5a without derating on standard PCB layouts. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and chassis applications requiring zero-defect reliability across -40 °C to +125 °C ambient. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20D; supports green manufacturing and end-of-life recycling requirements. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on protected devices - critical for 3.3 V/5 V logic interfaces and MOSFET gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges up to 120 V. Use Value: Limits peak voltage to ≤49.9 V at 30 A, preventing damage to PMICs and microcontrollers without adding series impedance. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD and inductive kickback from solenoid actuation. Use Value: Clamps 8/20 μs surges to ≤64.3 V while maintaining <1 μA leakage at 30.8 V, preserving signal integrity in 24 V systems. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHY power and bias lines in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rails upstream of DC/DC converters. Use Value: Withstands 1500 W pulses and maintains RθJA = 75 °C/W on standard FR4, enabling compact board designs without heatsinks. |
Use Scenario: Suppressing back-EMF from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to divert inductive energy during PWM switching transitions. Use Value: 200 A IFSM rating handles repetitive 10 ms half-sine surges; glass passivation ensures long-term stability under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Lower PPPM (400 W), SMA package (DO-214AC), non-AEC-Q101, higher RθJA (110 °C/W). | Suitable for cost-sensitive consumer electronics; insufficient for automotive load dump or industrial surge standards. | Select only for low-energy transients (<500 W) where AEC-Q101 and 1500 W rating are not required. |
| 1.5SMC36A-Q | Same SMC package and 1500 W rating, but AEC-Q101 qualified via "-Q" suffix (not HM3); halogen content not specified. | Valid for automotive use but lacks documented halogen-free compliance; may not meet Tier 1 green procurement mandates. | Prefer SM15T36AHM3_A/I when halogen-free + AEC-Q101 dual compliance is contractually required. |
Compared with SMAJ36A-E3/57T and 1.5SMC36A-Q, SM15T36AHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free construction, and industry-standard SMC footprint - making it the only option meeting full Tier 1 automotive and sustainability requirements simultaneously.
Availability
SM15T36AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom infrastructure equipment requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for SM15T36AHM3_A/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 optoelectronics with emphasis on reliability and application-specific performance.
The SM15T Series was developed to deliver high-power transient suppression in compact SMC packages for automotive, industrial, and telecom applications where AEC-Q101 qualification and environmental compliance are mandatory.
FAQ
What is the clamping voltage of SM15T36AHM3_A/I at its rated peak pulse current?
The SM15T36AHM3_A/I has a maximum clamping voltage (VC) of 49.9 V at 30 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T36AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is SM15T36AHM3_A/I qualified to AEC-Q101, and how is that indicated in the part number?
Yes, SM15T36AHM3_A/I is AEC-Q101 qualified. This is explicitly encoded in the "HM3" suffix - where "H" denotes AEC-Q101 qualification, "M" indicates halogen-free construction, and "3" confirms RoHS compliance. The "_A/I" further specifies tape-and-reel packaging (3500 units per 13-inch reel), consistent with Vishay's automotive-grade ordering nomenclature.
What does the "HM3" suffix mean in SM15T36AHM3_A/I?
In SM15T36AHM3_A/I, "HM3" signifies halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. "H" = AEC-Q101 qualified, "M" = halogen-free, "3" = RoHS-compliant per EU Directive 2011/65/EU. This triple qualification makes SM15T36AHM3_A/I suitable for automotive safety-critical systems and environmentally regulated industrial deployments.
Can SM15T36AHM3_A/I be used in bidirectional configurations?
No, SM15T36AHM3_A/I is a unidirectional TVS device, as confirmed by its "A" suffix (not "CA") and cathode band marking. Bidirectional variants in the SM15T series use the "CA" suffix (e.g., SM15T36CA). Using SM15T36AHM3_A/I in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or circuit.
What is the thermal resistance of SM15T36AHM3_A/I, and how does it affect PCB layout?
The SM15T36AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under 6.5 W steady-state dissipation, designers must implement minimum recommended pad areas and avoid excessive trace length or isolation - otherwise, thermal derating will reduce surge handling capability.
SM15T36AHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
SM15T36AHM3_A/I FAQ
1.How can I place an order for SM15T36AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36AHM3_A/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 SM15T36AHM3_A/I reliable?
The price and inventory of SM15T36AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T36AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T36AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36AHM3_A/I?
SM15T36AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36AHM3_A/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 SM15T36AHM3_A/I?
For technical support, including SM15T36AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36AHM3_A/I requirements.
6.How does Aetrix verify that SM15T36AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T36AHM3_A/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 SM15T36AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T36AHM3_A/I?
All SM15T36AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36AHM3_A/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 SM15T36AHM3_A/I part is unused and in its original packaging.
Return procedure for SM15T36AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36AHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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