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Vishay General Semiconductor - Diodes Division 1.5SMC15AHM3_A/H
- Part No.:
- 1.5SMC15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15AHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,541
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Product details
Overview
1.5SMC15AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount 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), and clamps transients to ≤21.2 V at 70.8 A peak pulse current (10/1000 µs), delivering 1500 W peak pulse power. It is widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC15AHM3_A/H datasheet, 1.5SMC15AHM3_A/H pinout, 1.5SMC15AHM3_A/H application, or 1.5SMC15AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package with cathode band polarity marking, low incremental surge resistance, and compliance with UL 497B for telecom and automotive surge protection systems.
Technical Context
This device operates as a unidirectional clamping TVS diode, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and stable breakdown behavior under repetitive transient stress. Its thermal resistance (RθJA = 75 °C/W) and junction temperature rating (TJ = –65 to +150 °C) support reliable operation on standard PCB copper pads (8.0 mm × 8.0 mm per terminal).
The 1.5SMC15AHM3_A/H is rated for 1500 W peak pulse power (10/1000 µs waveform, 0.01% duty cycle), with a maximum clamping voltage of 21.2 V at 70.8 A IPPM and reverse leakage <1.0 µA at VWM. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise breakdown onset for accurate clamping threshold setting |
| VWM | 12.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤21.2 V at 70.8 A - ensures protected ICs see no more than 21.2 V during worst-case 1500 W surge |
| PPPM | 1500 W - peak transient energy absorption capability with 10/1000 µs waveform |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting high-energy inductive switch-off events |
| TJ max | +150 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and matte tin leads |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94 V-0 flammability rating; cathode indicated by a band on the body; terminals are matte tin plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference | Provides low forward voltage drop (VF = 3.5 V at 100 A) during surge conduction to ground |
| Cathode | Current exit point in forward bias; connected to line being protected (e.g., 12 V rail or signal trace) | Marked with band; defines unidirectional clamping direction from cathode to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per AEC standards |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without degradation |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage, and long-term parameter stability across life cycles |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Halogen-free & RoHS-compliant | Meets environmental compliance for global automotive and industrial OEM supply chains (P/N suffix HM3) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to shunt transients before they reach sensitive input stages. Use Value: Clamps 12 V system surges to ≤21.2 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against induced lightning surges on 24 V DC field wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on backplane-connected I/O terminals, coordinated with upstream fuses and downstream filtering. Use Value: Absorbs 1500 W transient energy while maintaining VC below 24 V rail tolerance limits, avoiding false triggering or damage to optocouplers and level shifters. |
| Telecom Power Rail Protection | Consumer Power Adapter Output Protection |
Use Scenario: Secondary-side surge suppression on 48 V PoE-powered equipment (e.g., IP cameras, access points) compliant with IEEE 802.3bt. IC Role / Device Role / Timing Role: Fast-acting TVS on DC output rails to suppress common-mode transients coupled via Ethernet magnetics or AC/DC converter noise. Use Value: Responds in <1 ns to clamp 10/1000 µs surges to 21.2 V, protecting downstream DC/DC converters and PMICs rated for ≤28 V absolute max. |
Use Scenario: Output overvoltage protection in USB-C PD adapters and multi-chemistry battery chargers where secondary-side regulation may fail. IC Role / Device Role / Timing Role: Last-line defense clamping element placed after secondary rectification and before output capacitors and connector pins. Use Value: Limits fault voltage to 21.2 V during open-loop regulator failure, preventing fire hazard and ensuring UL 62368-1 compliance for end-user safety. |
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 | Same VWM/VBR/VC, but lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a or lightning-induced surges | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4 only. |
| 1.5KE15A | Through-hole TO-204AA (DO-41); identical electrical specs but incompatible mounting and thermal profile | Requires PCB redesign; not suitable for automated SMT assembly or high-density layouts | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the 1.5SMC15AHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package manufacturability-making it the preferred choice for production automotive and industrial SMT applications requiring validated reliability and high-energy clamping.
Availability
1.5SMC15AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, AEC-Q101 compliance, and consistent 1500 W surge performance across production lots.
Supply support for 1.5SMC15AHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 validation, and repeatable clamping performance are critical.
FAQ
What is the meaning of the "HM3" and "_A/H" suffixes in 1.5SMC15AHM3_A/H?
The "HM3" suffix indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "_A/H" denotes revision code "A" and packaging in 7-inch tape-and-reel format (850 units per reel). This full ordering code confirms the device meets automotive-grade reliability and environmental standards required for production deployment in 1.5SMC15AHM3_A/H applications.
Does 1.5SMC15AHM3_A/H support bidirectional transient suppression?
No - the 1.5SMC15AHM3_A/H is strictly unidirectional, as confirmed by its part number ending in "A" (not "CA") and specification of cathode band polarity. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC15CA). Using 1.5SMC15AHM3_A/H in bidirectional circuits would result in forward conduction during negative transients and potential failure.
What is the maximum clamping voltage of 1.5SMC15AHM3_A/H under a 10/1000 µs surge?
The maximum clamping voltage (VC) for 1.5SMC15AHM3_A/H is 21.2 V at 70.8 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5SMC15AHM3_A/H be used in place of older 1.5SMC15A-E3 parts?
Yes - 1.5SMC15AHM3_A/H is a direct functional and pin-compatible upgrade to 1.5SMC15A-E3, offering identical electrical characteristics plus halogen-free materials and AEC-Q101 qualification. No PCB layout change is needed, but the HM3 version provides enhanced reliability for automotive and high-reliability industrial use cases involving 1.5SMC15AHM3_A/H.
What thermal derating applies to 1.5SMC15AHM3_A/H above 25 °C ambient?
Per Figure 2 in the Vishay datasheet, 1.5SMC15AHM3_A/H must be derated linearly above 25 °C: peak pulse power decreases by ~0.8% per °C rise in initial junction temperature. At 100 °C ambient (with proper pad layout), usable PPPM drops to approximately 1125 W, while VC and VBR remain within spec. Thermal design must account for RθJA = 75 °C/W.
1.5SMC15AHM3_A/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:
- 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/H FAQ
1.How can I place an order for 1.5SMC15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15AHM3_A/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_A/H reliable?
The price and inventory of 1.5SMC15AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15AHM3_A/H?
1.5SMC15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15AHM3_A/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_A/H?
For technical support, including 1.5SMC15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC15AHM3_A/H?
All 1.5SMC15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15AHM3_A/H Tags
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