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Vishay General Semiconductor - Diodes Division 1.5SMC15AHM3_A/I
- Part No.:
- 1.5SMC15AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15AHM3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,133
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Product details
Overview
1.5SMC15AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V stand-off voltage (VWM), clamps to ≤21.2 V at 70.8 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the 1.5SMC15AHM3_A/I datasheet, 1.5SMC15AHM3_A/I pinout, 1.5SMC15AHM3_A/I application, or 1.5SMC15AHM3_A/I equivalent, this page provides verified package mapping (SMC/DO-214AB), polarity marking (cathode band), junction temperature limit (150 °C), AEC-Q101 qualification status, and real-world clamping performance under standardized surge conditions.
Technical Context
The 1.5SMC15AHM3_A/I operates as a unidirectional avalanche-clamping device with glass-passivated junction construction, enabling fast response (<1 ps) to ESD and lightning-induced transients. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 µs surges up to 70.8 A.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and maintains stable operation across -65 °C to +150 °C junction temperature range - critical for under-hood automotive and industrial power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤21.2 V at 70.8 A - clamping voltage under 1500 W 10/1000 µs surge, limiting protected circuit stress |
| PPPM | 1500 W - peak pulse power handling capability with 0.01% duty cycle, suitable for infrequent surge events |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), supporting unidirectional power rail protection |
| TJ max | +150 °C - maximum junction temperature enabling use in high-ambient environments like engine control units |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Avalanche conduction terminal / clamping node | Marked with band; ties to protected circuit's higher-potential rail or supply line |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe lightning-induced surges (IEC 61000-4-5 Level 4) without derating on standard PCB layouts |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and ADAS modules requiring zero-failure field reliability |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability under thermal cycling and humidity exposure |
| MSL Level 1 | Supports single-reflow lead-free assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global automotive and industrial OEM programs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 15 V while remaining inactive below 12.8 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤21.2 V, preventing latch-up or gate oxide damage. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Placed across signal and ground lines to shunt fast transients before they reach ADC inputs or op-amp front-ends. Use Value: Maintains signal integrity with <1 µA leakage at 12.8 V, ensuring no DC offset or gain error in precision measurement paths. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs from mains-borne surges and capacitor discharge spikes. IC Role / Device Role / Timing Role: Mounted after bridge rectifier to clamp positive-going transients on the bulk capacitor rail. Use Value: Absorbs 1500 W pulses without degradation, extending lifespan of electrolytic capacitors and MOSFETs in cost-sensitive consumer designs. |
Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers exposed to induced surges on outdoor telecom cables. IC Role / Device Role / Timing Role: Used in conjunction with gas discharge tubes (GDTs) as secondary-stage clamping device on data line pairs. Use Value: Provides low-clamping-voltage backup protection after GDT fires, limiting residual voltage to safe levels for silicon transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Lower peak pulse power (600 W), SMB package (smaller footprint), same VBR range (14.3–15.8 V) | Not rated for AEC-Q101; limited to commercial-grade consumer/industrial use | Select when board space is constrained and surge energy is ≤600 W (e.g., USB port protection) |
| 1.5KE15A | Through-hole DO-201 package, identical electrical specs but higher thermal resistance (RθJA ≈ 100 °C/W vs. 75 °C/W) | Requires wave soldering; unsuitable for fully SMT production or high-density automotive PCBs | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs automated assembly needs |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the 1.5SMC15AHM3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package compatibility with high-volume SMT lines - making it the preferred choice for automotive and industrial applications demanding both reliability and manufacturability.
Availability
1.5SMC15AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom infrastructure requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for 1.5SMC15AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5SMC15AHM3_A/I under maximum surge conditions?
The 1.5SMC15AHM3_A/I clamps to a maximum of 21.2 V when subjected to its rated 70.8 A peak pulse current (10/1000 µs waveform). This value is measured per standard test conditions and ensures downstream components experience controlled overvoltage stress - critical for protecting 15 V-rated ICs and MOSFETs in automotive power distribution networks.
Is the 1.5SMC15AHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC15AHM3_A/I carries AEC-Q101 qualification, confirmed by Vishay's documentation for HM3 suffix parts in the 1.5SMC6.8A to 1.5SMC220A range. This includes rigorous testing for temperature cycling, high-temperature reverse bias, and ESD - making it suitable for engine control units, body electronics, and ADAS modules.
What does the "HM3" suffix indicate in 1.5SMC15AHM3_A/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "A" indicates unidirectional polarity, "I" specifies 13-inch tape-and-reel packaging (3500 units per reel), and "H" refers to the 7-inch reel variant - all defined in Vishay's official ordering information table.
How does the 1.5SMC15AHM3_A/I compare to bidirectional TVS diodes like 1.5SMC15CA?
The 1.5SMC15AHM3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC15CA is bidirectional with symmetrical clamping in both directions. Use 1.5SMC15AHM3_A/I for DC power rails where polarity is fixed; choose 1.5SMC15CA only for AC-coupled or floating signal lines requiring protection regardless of voltage polarity.
What is the thermal resistance of the 1.5SMC15AHM3_A/I, and how does it affect layout design?
The 1.5SMC15AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per Vishay's recommended layout. To maintain TJ ≤150 °C under 6.5 W steady-state dissipation, designers must ensure adequate copper area and avoid excessive ambient temperatures - especially in sealed enclosures.
1.5SMC15AHM3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for 1.5SMC15AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15AHM3_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 1.5SMC15AHM3_A/I reliable?
The price and inventory of 1.5SMC15AHM3_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 1.5SMC15AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC15AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15AHM3_A/I?
1.5SMC15AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15AHM3_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 1.5SMC15AHM3_A/I?
For technical support, including 1.5SMC15AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC15AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15AHM3_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 1.5SMC15AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC15AHM3_A/I?
All 1.5SMC15AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15AHM3_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 1.5SMC15AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC15AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15AHM3_A/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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