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Vishay General Semiconductor - Diodes Division SMC5K15AHM3_A/H
- Part No.:
- SMC5K15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K15AHM3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,359
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Product details
Overview
SMC5K15AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V clamping voltage (VC) at 205 A (10/1000 μs), 5000 W peak pulse power, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMC5K15AHM3_A/H datasheet, SMC5K15AHM3_A/H pinout, SMC5K15AHM3_A/H application, or SMC5K15AHM3_A/H equivalent, this part delivers verified ESD immunity (30 kV HBM), low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for automotive infotainment power rail protection, industrial sensor interface hardening, and telecom line card transient suppression.
Technical Context
This TVS operates as a clamping device that remains non-conductive below VWM (15 V), then rapidly transitions to low-impedance conduction above VBR to limit transient overvoltage. Its unidirectional polarity enables DC-biased line protection without reverse leakage concerns in supply rails.
It sustains 5000 W peak pulse power under 10/1000 μs waveform and 40 kW under 8/20 μs waveform, with thermal resistance RthJA = 90 °C/W and RthJM = 4.0 °C/W - enabling robust thermal management on standard FR4 PCBs with 2 oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for 12 V automotive systems. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - guaranteed conduction onset range; ensures reliable triggering above nominal rail voltage. |
| VC (Clamping Voltage) | 24.4 V at 205 A (10/1000 μs) - limits transient voltage seen by downstream ICs; protects 24 V-rated components. |
| PPPM (Peak Pulse Power) | 5000 W - energy-handling capacity for standardized 10/1000 μs surges; supports IEC 61000-4-5 Level 4 compliance. |
| ESD Rating | 30 kV (HBM, contact & air) - exceeds IEC 61000-4-2 Level 4; eliminates need for additional ESD stages in sensor interfaces. |
| TJ max | 150 °C - enables operation in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements; required for front-end power modules in ADAS ECUs. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; tied to system ground or low-side reference. | Provides return path for surge current; must connect to low-impedance ground plane for effective clamping. |
| Cathode | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., 12 V rail). | Defines polarity-sensitive placement - misorientation prevents clamping and risks catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Enables precise protection of positively biased DC lines without interfering with normal forward operation. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients; critical for protecting MOSFET gate drivers and microcontroller I/O. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; reduces manufacturing complexity. |
| AEC-Q101 qualification (HM3 suffix) | Validates reliability for automotive powertrain and body electronics; includes temperature cycling, HTRB, and UHAST. |
| UL 497B recognition (E136766) | Confirms safety compliance for telecom and industrial equipment requiring certified surge protection. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Hardening |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Primary clamping device on main power input, placed upstream of DC-DC converters and LDOs. Use Value: Clamps 12 V rail to ≤24.4 V during 205 A surges, preventing latch-up or burnout in downstream PMICs and MCUs. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from EFT and surge coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Point-of-entry TVS on twisted-pair signal lines, paired with series current-limiting resistors. Use Value: Limits induced transients to <25 V within 1 ns response time, preserving ADC accuracy and avoiding false triggers. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary rails in carrier-grade access switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after gas discharge tube (GDT) primary stage; handles residual energy. Use Value: Absorbs 5000 W pulses without degradation, maintaining isolation integrity across 1000+ surge events per IEC 61000-4-5. |
Use Scenario: Reinforcing overvoltage resilience in AC-DC adapter secondary-side 5 V/12 V outputs feeding smart home hubs. IC Role / Device Role / Timing Role: Final-stage protector before USB-C PD controllers and USB port protection ICs. Use Value: Prevents damage from capacitor discharge events and hot-plug transients, extending field life beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-M3/86A | Lower PPPM (400 W), SMA package (smaller footprint), same VWM/VBR range. | Suitable for space-constrained consumer electronics but insufficient for automotive load dump. | Select only for cost-sensitive, low-energy applications where 5000 W rating is not required. |
| SMCJ15A-HM3 | Same SMC package and AEC-Q101 qualification, but rated for 1500 W PPPM (not 5000 W); different internal die construction. | Limited to lower-energy transients (e.g., ESD-only); cannot replace SMC5K15AHM3_A/H in IEC 61000-4-5 scenarios. | Use only when full 5000 W capability is unnecessary and board layout must remain unchanged. |
Compared with SMAJ15A-M3/86A and SMCJ15A-HM3, the SMC5K15AHM3_A/H uniquely combines automotive-grade qualification, 5000 W surge handling, and SMC package thermal performance - making it the sole option for high-reliability 12 V rail protection where both energy and lifetime requirements exceed standard TVS capabilities.
Availability
SMC5K15AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply and long-term lifecycle support.
Supply support for SMC5K15AHM3_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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive environments.
The SMC5K15AHM3_A/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in automotive power distribution networks and industrial power supplies.
FAQ
What is the clamping voltage of the SMC5K15AHM3_A/H under a 10/1000 μs surge?
The SMC5K15AHM3_A/H has a maximum clamping voltage (VC) of 24.4 V at 205 A under the 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 87742 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs like microcontrollers and gate drivers remain within absolute maximum ratings.
Is the SMC5K15AHM3_A/H qualified for automotive applications?
Yes, the SMC5K15AHM3_A/H carries the HM3 suffix, confirming full AEC-Q101 qualification per Vishay's documentation. This includes validation across temperature cycling, highly accelerated stress testing (HAST), and unbiased highly accelerated stress testing (UHAST), making it suitable for under-hood and cabin-mounted automotive electronics where reliability under thermal and mechanical stress is mandatory.
What does the "_A/H" suffix mean in SMC5K15AHM3_A/H?
The "_A/H" suffix in SMC5K15AHM3_A/H indicates packaging configuration: "A" denotes the revision level (per Vishay's ordering nomenclature), and "H" specifies 7-inch diameter plastic tape-and-reel packaging with 850 units per reel. This matches the preferred package code listed in the Ordering Information table of datasheet 87742.
Can the SMC5K15AHM3_A/H be used in bidirectional protection circuits?
No, the SMC5K15AHM3_A/H is strictly unidirectional. Its electrical characteristics - including VBR, VC, and leakage behavior - are specified only for reverse-bias operation. For bidirectional protection (e.g., AC lines or data buses), a dedicated bidirectional TVS such as SMBJ15CA-HM3 must be selected instead.
What is the thermal resistance junction-to-ambient (RthJA) for the SMC5K15AHM3_A/H?
The SMC5K15AHM3_A/H has a typical RthJA of 90 °C/W when mounted on a standard FR4 PCB with 2 oz copper, per JEDEC 51-2A test conditions. This value directly impacts steady-state power dissipation capability and must be factored into layout design - especially when multiple surges occur in rapid succession or ambient temperatures exceed 85 °C.
SMC5K15AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 205A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K15AHM3_A/H FAQ
1.How can I place an order for SMC5K15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K15AHM3_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 SMC5K15AHM3_A/H reliable?
The price and inventory of SMC5K15AHM3_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 SMC5K15AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC5K15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K15AHM3_A/H?
SMC5K15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K15AHM3_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 SMC5K15AHM3_A/H?
For technical support, including SMC5K15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K15AHM3_A/H requirements.
6.How does Aetrix verify that SMC5K15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC5K15AHM3_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 SMC5K15AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC5K15AHM3_A/H?
All SMC5K15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K15AHM3_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 SMC5K15AHM3_A/H part is unused and in its original packaging.
Return procedure for SMC5K15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K15AHM3_A/H Tags
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Diodes Incorporated
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