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Vishay General Semiconductor - Diodes Division SM15T36AHM3/H
- Part No.:
- SM15T36AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36AHM3/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,176
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Product details
Overview
SM15T36AHM3/H 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), 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 sensor signal lines and I/O interfaces against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T36AHM3/H datasheet, SM15T36AHM3/H pinout, SM15T36AHM3/H application, or SM15T36AHM3/H 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
This TVS diode employs a glass-passivated silicon junction optimized for low-inductance transient suppression in high-impedance source environments. Its 10/1000 μs waveform rating targets lightning surge immunity per IEC 61000-4-5 and industrial switching transient protection per ISO 7637-2.
The device operates over -65 °C to +150 °C junction temperature range and features MSL Level 1 moisture sensitivity with 260 °C lead-free reflow compatibility. It fails short-circuit under overstress, ensuring system-level fault containment without open-circuit risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single-event surges up to 1500 W without degradation when mounted on 8.0 mm × 8.0 mm copper pads |
| Stand-off Voltage (VWM) | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets upper limit for protected line DC bias |
| Breakdown Voltage (VBR) | 34.2–37.8 V at 1 mA - defined threshold where device transitions from high-impedance to clamping state; ensures reliable turn-on above VWM |
| Clamping Voltage (VC) | 49.9 V at 30 A IPPM - maximum voltage seen by downstream circuit during worst-case 30 A transient; determines safe margin for IC input tolerance |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in under-hood automotive and industrial ambient conditions without derating below TA = 25 °C |
| Thermal Resistance (RθJA) | 75 °C/W - defines junction-to-ambient temperature rise per watt of steady-state dissipation; critical for long-term reliability in sealed enclosures |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by molded band on case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction mode; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path during clamping; must be routed with minimal inductance to maintain low VC |
| Cathode | Current exit terminal in forward conduction; marked by visible band on package body | Connected to protected line (e.g., CAN_H, LIN, sensor output); polarity-sensitive installation required |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 kA) surges without external series impedance |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A110/A114 |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream components - e.g., protects 36 V-rated CAN transceivers during 30 A transients |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without baking or special handling; compatible with automated SMT lines |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules and ADAS ECUs exposed to load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before they reach sensitive analog front-end. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2a/5a stress; prevents ADC saturation and latch-up in AEC-Q100 Grade 2 systems. |
Use Scenario: Shielding RS-485, CAN, or digital I/O ports in PLCs and motor drives from EFT bursts and lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential bus lines, installed adjacent to connector to minimize PCB trace inductance. Use Value: Limits transient voltage to ≤49.9 V at 30 A, preserving communication integrity during 1 kV/500 A IEC 61000-4-4 EFT events. |
| Consumer Power Adapter Interface | Telecom DC Power Input Protection |
Use Scenario: Safeguarding USB-C PD port and auxiliary power rails in smart home hubs against accidental AC mains coupling and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS on VBUS line upstream of buck converter, sized to absorb 1500 W surges without thermal runaway. Use Value: Prevents damage to USB PD controller ICs during 10/1000 μs surges up to 30 A while maintaining <1 μA leakage at 30.8 V nominal rail. |
Use Scenario: Protecting -48 V DC telecom power inputs in base station radios and optical line terminals from lightning-induced common-mode surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail relative to chassis ground, leveraging high VWM to tolerate normal -48 V ±10% variation. Use Value: Clamps to 49.9 V above ground during 30 A transients, preventing destruction of DC/DC controllers and FET drivers in -48 V distribution networks. |
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 SMC package, 1500 W rating, but non-AEC-Q101, RoHS-compliant only (E3 suffix), higher VC = 58.1 V at 25.8 A | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 not mandated | Select SMAJ36A-E3/57T when cost sensitivity outweighs automotive reliability requirements and layout allows higher clamping margin |
| SMCJ36A-QH | AEC-Q101 qualified, same VWM/VBR, but 3000 W rating (10/1000 μs), larger SMC package variant with RθJA = 50 °C/W | Higher surge capacity suits systems requiring IEC 61000-4-5 Level 5 (6 kV/3 kA) immunity | Choose SMCJ36A-QH when system-level surge test levels exceed 1500 W or when extended thermal margin is needed in confined spaces |
Compared with SMAJ36A-E3/57T, SM15T36AHM3/H offers lower clamping voltage and automotive qualification; compared with SMCJ36A-QH, it provides identical clamping performance in a smaller footprint but with half the peak power rating - ideal for space-constrained AEC-Q101 designs where 1500 W suffices.
Availability
SM15T36AHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power supply inputs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SM15T36AHM3/H 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM15T Series was designed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - delivering consistent clamping performance, low leakage, and robust surge handling in compact SMC packages.
FAQ
What is the clamping voltage of SM15T36AHM3/H at its rated peak pulse current?
The SM15T36AHM3/H has a maximum clamping voltage (VC) of 49.9 V at 30 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and represents the highest voltage imposed on the protected circuit during worst-case transient events. The SM15T36AHM3/H maintains this clamping performance across its qualified operating temperature range.
Is SM15T36AHM3/H qualified for automotive applications?
Yes, SM15T36AHM3/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's 88380 datasheet. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. The SM15T36AHM3/H is intended for use in automotive subsystems such as body control modules, sensor interfaces, and infotainment power supplies where reliability under thermal and electrical stress is mandatory.
What does the "HM3" suffix indicate in SM15T36AHM3/H?
The "HM3" suffix in SM15T36AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive material requirements, including JESD201 Class 2 whisker resistance and UL 94 V-0 flammability rating. The "H" prefix in HM3 explicitly signals AEC-Q101 qualification per Vishay's ordering nomenclature.
How does SM15T36AHM3/H differ from SM15T36A-E3/57T?
SM15T36AHM3/H differs from SM15T36A-E3/57T in three key ways: it carries AEC-Q101 qualification (HM3 vs. E3), uses halogen-free molding compound (per Vishay's material categorization), and is rated for higher surge robustness in automotive environments. The SM15T36AHM3/H also exhibits tighter VBR tolerance (34.2–37.8 V vs. 34.2–39.0 V for some E3 variants) and lower clamping voltage (49.9 V vs. typically 51–53 V).
What is the thermal resistance of SM15T36AHM3/H, and how does it affect layout design?
The SM15T36AHM3/H 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 guides PCB layout: reducing pad size or omitting thermal vias increases RθJA, risking junction overheating during repeated transients. For sustained reliability, designers should maintain minimum pad dimensions and consider adding thermal vias to inner layers beneath both terminals when using SM15T36AHM3/H in high-duty-cycle applications.
SM15T36AHM3/H 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/H FAQ
1.How can I place an order for SM15T36AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36AHM3/H 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/H reliable?
The price and inventory of SM15T36AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T36AHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T36AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36AHM3/H?
SM15T36AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36AHM3/H 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/H?
For technical support, including SM15T36AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36AHM3/H requirements.
6.How does Aetrix verify that SM15T36AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T36AHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of SM15T36AHM3/H?
All SM15T36AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36AHM3/H, 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/H part is unused and in its original packaging.
Return procedure for SM15T36AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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