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Vishay General Semiconductor - Diodes Division 1.5SMC15AHM3/H
- Part No.:
- 1.5SMC15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15AHM3/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,431
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Product details
Overview
1.5SMC15AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 15 V standoff voltage (VWM), 17.1 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power line and sensor interface protection.
For engineers reviewing the 1.5SMC15AHM3/H datasheet, 1.5SMC15AHM3/H pinout, 1.5SMC15AHM3/H application, or 1.5SMC15AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), polarity marking convention, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient overvoltages above its VBR threshold while maintaining low leakage (<1.0 µA at 12.8 V). Its glass-passivated junction ensures stable performance under repetitive surges, and its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The device exhibits fast response time (<1.0 ns), low incremental surge resistance, and excellent clamping ratio (VC/VBR ≈ 1.24), enabling robust protection of downstream MOSFETs and ICs against ESD, lightning-induced transients, and inductive switching spikes in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping onset. |
| VBR (min) | 14.3 V - Minimum breakdown voltage at 1.0 mA test current; guarantees reliable avalanche initiation during transients. |
| VC (max) | 21.2 V - Maximum clamped voltage at 70.8 A IPPM; determines worst-case stress on protected circuitry. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; enables suppression of high-energy automotive load-dump events. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs derating requirements for sustained power dissipation at elevated ambient temperatures. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity marked with cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or lower-potential rail in unidirectional TVS configuration. |
| Cathode | Current exit terminal during forward conduction; clamping node in reverse bias | Connected to protected signal/power line; avalanche breakdown occurs between cathode and anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in compact SMC footprint without external heatsinking. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability across -40 °C to +125 °C ambient. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1, 260 °C peak | Enables compatibility with standard lead-free reflow profiles without preconditioning or baking. |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) and EU RoHS Directive 2011/65/EU. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp overvoltage before it reaches DC-DC converters and microcontrollers. Use Value: Limits peak voltage to ≤21.2 V during 70.8 A surge, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS connected across differential pair or single-ended output to suppress ±8 kV contact ESD (IEC 61000-4-2) without signal distortion. Use Value: Sub-1 ns response and <1.0 µA leakage at 12.8 V preserve signal integrity and offset accuracy in precision 24-bit ADC front-ends. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input rail, coordinated with upstream fuse and common-mode choke. Use Value: 1500 W rating handles combined differential + common-mode surges per ITU-T K.21 Basic Level, reducing need for multi-stage protection. |
Use Scenario: Suppressing flyback voltage spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive kickback energy during PWM commutation. Use Value: Low clamping voltage (21.2 V) prevents MOSFET drain-source breakdown while sustaining 200 A non-repetitive surge (IFSM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/A | Same VWM (12.8 V) and VC (24.4 V), but lower PPPM (600 W); SMB package (DO-214AA), smaller footprint, higher RθJA (110 °C/W). | Lower surge capacity suits consumer-grade 12 V rails; not AEC-Q101 qualified; unsuitable for automotive load dump. | Select when space-constrained and surge energy is limited to IEC 61000-4-5 Level 2 (1 kV line-earth). |
| 1.5KE15A | Through-hole TO-204AE (DO-201AE); identical VWM/VC specs but higher RθJA (100 °C/W); no AEC-Q101 or halogen-free certification. | Legacy design-in only; incompatible with automated SMT assembly; lacks automotive qualification and modern environmental compliance. | Choose only for repair or legacy board rework where SMT replacement is impractical. |
Compared with SMBJ15AHE3/A and 1.5KE15A, the 1.5SMC15AHM3/H delivers superior surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal performance), automotive-grade reliability, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring IPC-6012 Class 2+ reliability.
Availability
1.5SMC15AHM3/H is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial sensor nodes, telecom DC power supplies, and consumer appliance motor drives requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC15AHM3/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The 1.5SMC Series was developed specifically for surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding high pulse power, AEC-Q101 validation, and halogen-free compliance.
FAQ
What is the clamping voltage of the 1.5SMC15AHM3/H at its rated peak pulse current?
The 1.5SMC15AHM3/H has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 70.8 A, measured using the standardized 10/1000 µs double-exponential waveform. This value represents the worst-case voltage seen by protected circuitry during a full-power transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The 1.5SMC15AHM3/H maintains this clamping performance across its qualified operating temperature range.
Is the 1.5SMC15AHM3/H certified for automotive use?
Yes, the 1.5SMC15AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant construction with full automotive reliability validation. It meets stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D. This makes the 1.5SMC15AHM3/H suitable for under-hood and body-control module applications where zero-defect operation is mandated.
What does the "H" in the 1.5SMC15AHM3/H part number signify?
The final "H" in 1.5SMC15AHM3/H denotes the tape-and-reel packaging option: 7-inch diameter plastic tape and reel, with 850 units per reel. This is distinct from the "I" suffix (13-inch reel, 3500 units). The "HM3" prefix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification, while "15A" specifies the 15 V nominal breakdown family. The 1.5SMC15AHM3/H is not a variant with altered electrical specs - only packaging differs.
How does the thermal performance of the 1.5SMC15AHM3/H compare to similar SMC-package TVS diodes?
The 1.5SMC15AHM3/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 - matching the industry-standard reference layout for SMC devices. This value is 35 °C/W lower than SMB-package alternatives (e.g., SMBJ15AHE3/A), enabling higher sustained power handling and reduced thermal derating in compact layouts. Its RθJL of 15 °C/W further supports efficient heat transfer to PCB copper planes.
Can the 1.5SMC15AHM3/H be used in bidirectional configurations?
No, the 1.5SMC15AHM3/H is strictly a unidirectional TVS diode, as confirmed by its "A" suffix and cathode-band polarity marking. Bidirectional variants in the same series use the "CA" suffix (e.g., 1.5SMC15CA). Using the 1.5SMC15AHM3/H in reverse-biased AC signal paths would result in forward conduction and potential failure. For bidirectional protection, select the AEC-Q101-qualified 1.5SMC15CHM3/H instead - which shares the same package, halogen-free construction, and qualification but features symmetrical clamping in both directions.
1.5SMC15AHM3/H 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/H FAQ
1.How can I place an order for 1.5SMC15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15AHM3/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 1.5SMC15AHM3/H reliable?
The price and inventory of 1.5SMC15AHM3/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15AHM3/H?
1.5SMC15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15AHM3/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 1.5SMC15AHM3/H?
For technical support, including 1.5SMC15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC15AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15AHM3/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 1.5SMC15AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC15AHM3/H?
All 1.5SMC15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15AHM3/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 1.5SMC15AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15AHM3/H Tags
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