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Vishay General Semiconductor - Diodes Division SM15T36AHM3/I
- Part No.:
- SM15T36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36AHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,618
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Product details
Overview
SM15T36AHM3/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 at 1 mA), and clamps to ≤49.9 V at 30 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines against lightning-induced and inductive-switching transients in automotive and industrial power electronics.
For engineers reviewing the SM15T36AHM3/I datasheet, SM15T36AHM3/I pinout, SM15T36AHM3/I application, or SM15T36AHM3/I equivalent, key selection criteria include verified clamping voltage at rated 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/I employs a glass-passivated silicon junction optimized for low-inductance transient suppression. Its 10/1000 μs waveform rating targets high-energy threats like 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 JESD201 Class 2 whisker resistance. The HM3 suffix confirms halogen-free, RoHS-compliant, AEC-Q101 qualified construction - distinct from commercial-grade E3/M3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before clamping begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - guaranteed breakdown range ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | ≤49.9 V at 30 A (10/1000 μs) - clamping voltage defines worst-case stress imposed on protected downstream components. |
| PPPM | 1500 W - peak pulse power handling capacity determines survivability against standardized surge waveforms. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance informs derating requirements above 25 °C ambient. |
| TJmax | +150 °C - maximum junction temperature enables reliable operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
Pinout & Package
SMC (DO-214AB) package with two terminals: anode and cathode. Cathode identified by molded band on body. No internal pins; device functions as a two-terminal bidirectional clamp when used in reverse-biased configuration (unidirectional operation requires correct polarity placement).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal for unidirectional clamping | Connects to protected line; conducts during positive transients relative to anode, enabling low-clamp protection of downstream ICs. |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or lower-potential rail; completes current path during transient conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and eliminates corrosive halogen emissions during PCB reflow or end-of-life incineration. |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from 24 V industrial motor drives and 12 V automotive battery line disturbances without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on protected devices - critical for safeguarding 3.3 V or 5 V logic inputs in sensor front-ends. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without dry-pack or baking, reducing manufacturing cost and process complexity. |
Applications
| Automotive Power Line Protection | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges exceeding VWM. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by limiting peak voltage to ≤49.9 V during 30 A transients. |
Use Scenario: Shielding PLC analog input channels and digital I/O from inductive kickback generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across signal line and reference ground to suppress fast-rising edge transients. Use Value: Maintains signal integrity below 50 V clamping threshold, ensuring ADC accuracy and preventing false triggering of digital isolators. |
| Automotive Sensor Signal Line Protection | Telecom DC Power Feeds |
|
Use Scenario: Safeguarding LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine bay environments subject to ESD and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS connected inline with sensor output trace to absorb sub-microsecond transients. Use Value: Enables robust operation up to +150 °C junction temperature while maintaining <1 μA leakage at 30.8 V, preserving sensor bias conditions. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless access points) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary-level TVS on input side of DC/DC converter to divert surge energy before regulation stage. Use Value: Handles 1500 W surges without failure, supporting IEEE 802.3bt compliance through validated short-circuit failure mode. |
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 | Same VWM (30.8 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; suitable only for commercial-grade consumer or computing applications. | Select when space-constrained layouts preclude SMC and automotive qualification is unnecessary. |
| SMCJ36A-M3/57T | Same VWM and PPPM, identical SMC package, but M3 suffix denotes halogen-free RoHS without AEC-Q101 validation. | Lacks automotive qualification evidence; acceptable for industrial controls where extended temperature validation is customer-performed. | Choose when halogen-free compliance is mandatory but AEC-Q101 testing is not required by end-customer specification. |
Compared with SMAJ36A-E3/57T and SMCJ36A-M3/57T, the SM15T36AHM3/I delivers verified automotive-grade reliability, tighter thermal performance (RθJA = 75 °C/W), and documented short-circuit failure mode - making it the only option qualified for safety-critical vehicle subsystems without additional qualification overhead.
Availability
SM15T36AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O, and telecom DC power feeds requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SM15T36AHM3/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, efficiency, and application-specific optimization.
The SM15T Series was developed to deliver high-power transient suppression in compact SMC packages for automotive and industrial systems where AEC-Q101 qualification, halogen-free compliance, and repeatable clamping performance are mandatory design requirements.
FAQ
What is the clamping voltage of SM15T36AHM3/I at its rated peak pulse current?
The SM15T36AHM3/I has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 30 A. This value is measured under standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T36AHM3/I maintains this clamping performance across its qualified operating temperature range.
Is SM15T36AHM3/I qualified for automotive applications?
Yes, SM15T36AHM3/I is explicitly AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88380, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for under-hood and chassis-mounted automotive electronics. The SM15T36AHM3/I is not a commercial-grade variant.
What does the "HM3" suffix mean in SM15T36AHM3/I?
The "HM3" suffix in SM15T36AHM3/I indicates halogen-free, RoHS-compliant construction with full AEC-Q101 qualification. It distinguishes this part from E3 (RoHS-compliant commercial), M3 (halogen-free RoHS commercial), and HE3 (AEC-Q101 qualified but not halogen-free) variants. The "I" denotes 13-inch tape-and-reel packaging (3500 units per reel), per Vishay's ordering nomenclature in Document 88380.
How does SM15T36AHM3/I differ from SM15T36A-E3/57T?
The SM15T36AHM3/I differs from SM15T36A-E3/57T in three key ways: it carries AEC-Q101 qualification (E3 is commercial grade), uses halogen-free molding compound (E3 is RoHS-compliant but may contain halogens), and ships in 13-inch tape (I) versus 7-inch tape (57T). Electrically and thermally, both share identical VWM, VBR, VC, and PPPM ratings, but only SM15T36AHM3/I is approved for automotive safety-critical use cases.
What is the thermal resistance of SM15T36AHM3/I, and how does it affect layout?
The SM15T36AHM3/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. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA, accelerating thermal derating. For sustained power dissipation, designers must apply Fig. 2 derating curves and ensure adequate board copper area to maintain TJ ≤ 150 °C.
SM15T36AHM3/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):
- 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/I FAQ
1.How can I place an order for SM15T36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36AHM3/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/I reliable?
The price and inventory of SM15T36AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SM15T36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36AHM3/I?
SM15T36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36AHM3/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/I?
For technical support, including SM15T36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36AHM3/I requirements.
6.How does Aetrix verify that SM15T36AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T36AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SM15T36AHM3/I?
All SM15T36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36AHM3/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/I part is unused and in its original packaging.
Return procedure for SM15T36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36AHM3/I Tags
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