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Vishay General Semiconductor - Diodes Division 1.5SMC15AHM3/I
- Part No.:
- 1.5SMC15AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15AHM3/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,441
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Product details
Overview
1.5SMC15AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 15 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 μs), and clamping voltage of 21.2 V at 70.8 A peak pulse current - deployed for robust overvoltage protection on DC power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5SMC15AHM3/I datasheet, 1.5SMC15AHM3/I pinout, 1.5SMC15AHM3/I application, or 1.5SMC15AHM3/I equivalent, key selection considerations include its AEC-Q101 qualification, halogen-free RoHS compliance (HM3 suffix), low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty-cycle transients.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable breakdown behavior across -65 °C to +150 °C junction temperature range. Its thermal resistance (RθJL = 15 °C/W) supports reliable energy dissipation when mounted on 8.0 mm × 8.0 mm copper pads.
The 1.5SMC15AHM3/I delivers precise voltage limiting: breakdown occurs at 14.3–15.8 V (tested at 1 mA), with maximum reverse leakage of 1.0 μA at 12.8 V standoff. It meets MSL Level 1 per J-STD-020 and withstands 200 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Confirmed avalanche onset range ensuring predictable turn-on threshold |
| VC (Clamping) | 21.2 V at 70.8 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient |
| PPPM | 1500 W - Sustained transient energy absorption capability without failure |
| IPPM | 70.8 A - Maximum non-repetitive surge current the device safely clamps |
| TJ max. | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMC (DO-214AB) package with matte tin-plated leads; unidirectional polarity indicated by cathode band on one end. Device has two terminals: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection in clamping configuration | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for modern automotive and industrial PCB assembly |
| 1500 W peak pulse power (10/1000 μs) | Handles high-energy transients such as ISO 7637-2 Pulse 5a without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes stress on downstream ICs by limiting overshoot during fast transients |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontroller power inputs against load-dump and jump-start transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp positive-going surges above 15 V. Use Value: Limits voltage excursion to ≤21.2 V during 70.8 A transients, preventing damage to 3.3 V/5 V logic supplies downstream. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory-floor pressure sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS connected across signal and return paths to suppress fast-rising common-mode spikes. Use Value: Sub-ns response ensures clamping before sensitive op-amp input stages saturate or latch up. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Guarding primary DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on 48 V input rail, coordinated with upstream fuses and secondary regulators. Use Value: 1500 W rating absorbs multi-kV induced transients while maintaining <1.0 μA leakage at nominal 48 V derated operation. |
Use Scenario: Secondary-level overvoltage suppression on VBUS line of USB-C ports in portable monitors subject to hot-plug and cable ESD events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to ground, sized to survive IEC 61000-4-2 ±8 kV contact discharge. Use Value: 21.2 V clamping voltage stays well below USB PD 3.0 20 V max, preserving port functionality during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Same VWM/VC, but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy is ≤600 W |
| 1.5KE15A | Through-hole DO-201 package, identical electrical specs, no AEC-Q101 or halogen-free certification | Not qualified for automotive use; requires wave soldering or hand assembly | Choose for cost-sensitive industrial prototypes where AEC-Q101 is not mandated |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the 1.5SMC15AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and full 1500 W surge handling in a surface-mount SMC outline - making it the only option among the three validated for production automotive electronics requiring both reliability and regulatory alignment.
Availability
1.5SMC15AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power supply designs requiring stable component supply with guaranteed long-term manufacturability and AEC-Q101 traceability.
Supply support for 1.5SMC15AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC15AHM3/I under a 10/1000 μs transient?
The 1.5SMC15AHM3/I clamps to a maximum of 21.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 70.8 A. This value is measured and guaranteed per Vishay's datasheet (Document Number: 88303, Rev. 09-Mar-2026), and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Is the 1.5SMC15AHM3/I qualified for automotive applications?
Yes, the 1.5SMC15AHM3/I carries AEC-Q101 qualification, confirmed by its HM3 suffix and explicit listing in Vishay's AEC-Q101 qualified devices table. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation - making it suitable for deployment in engine control units, body electronics, and ADAS subsystems.
What does the "HM3" suffix indicate for the 1.5SMC15AHM3/I?
The "HM3" suffix on the 1.5SMC15AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material restrictions and environmental standards required for modern vehicle platforms.
Can the 1.5SMC15AHM3/I be used in bidirectional configurations?
No - the 1.5SMC15AHM3/I is strictly unidirectional, as indicated by its "A" suffix and cathode-band marking. For bidirectional protection, Vishay offers the 1.5SMC15CA variant. Using the 1.5SMC15AHM3/I in reverse-biased mode risks permanent junction damage due to lack of symmetrical breakdown capability.
What is the maximum operating junction temperature for the 1.5SMC15AHM3/I?
The 1.5SMC15AHM3/I has a maximum junction temperature (TJ) rating of +150 °C, enabling reliable operation in under-hood automotive environments and high-ambient industrial enclosures. Derating curves in the datasheet confirm usable power dissipation down to ambient temperatures of +125 °C when mounted per recommended pad layout.
1.5SMC15AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC15AHM3/I FAQ
1.How can I place an order for 1.5SMC15AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15AHM3/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 1.5SMC15AHM3/I reliable?
The price and inventory of 1.5SMC15AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC15AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15AHM3/I?
1.5SMC15AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15AHM3/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 1.5SMC15AHM3/I?
For technical support, including 1.5SMC15AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC15AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15AHM3/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 1.5SMC15AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC15AHM3/I?
All 1.5SMC15AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15AHM3/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 1.5SMC15AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC15AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15AHM3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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