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Vishay General Semiconductor - Diodes Division SMC5K20AHM3_A/H
- Part No.:
- SMC5K20AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K20AHM3_A/H.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:800
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Product details
Overview
SMC5K20AHM3_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 5000 W peak pulse power (10/1000 μs), 22.2–24.5 V breakdown voltage (VBR), and clamps to ≤32.4 V at 154 A, making it suitable for automotive-grade ESD and load-switching transient suppression in engine control units and sensor interfaces.
For engineers reviewing the SMC5K20AHM3_A/H datasheet, SMC5K20AHM3_A/H pinout, SMC5K20AHM3_A/H application, or SMC5K20AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 30 kV HBM ESD immunity, unidirectional polarity with cathode band marking, and compatibility with automated SMT assembly per J-STD-002 and JESD 22-B102.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its stand-off voltage (VWM = 20 V) and rapidly transitions to low-impedance conduction above its breakdown threshold. Its junction-to-mount thermal resistance of 4.0 °C/W enables effective heat dissipation during repetitive surge events when mounted on copper pads per JEDEC 51-14.
The device meets IEC 61000-4-2 (30 kV contact/air discharge) and UL 497B safety standards, with MSL Level 1 rating and 260 °C reflow peak temperature tolerance. Its halogen-free, RoHS-compliant construction and matte tin-plated leads support automotive and industrial reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.2 V / 24.5 V - ensures reliable triggering above 20 V system operating voltage while avoiding false trips |
| VWM | 20 V - maximum continuous reverse working voltage before leakage exceeds 2 μA |
| VC @ IPPM | ≤32.4 V @ 154 A (10/1000 μs) - limits downstream voltage stress during worst-case transients |
| PPPM | 5000 W - sustains high-energy surges typical of automotive load-dump and inductive switching |
| TJ max | +150 °C - supports operation in under-hood environments without derating |
| ESD Rating | 30 kV HBM (contact/air) - exceeds IEC 61000-4-2 for robust board-level ESD hardening |
| AEC-Q101 | Qualified - validated for automotive electronic modules per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with UL 94 V-0 flammability rating; cathode indicated by color band; terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to ground or low-side reference | Provides return path for clamped surge current; must connect to low-impedance ground plane |
| Cathode | Protected line connection; marked with band | Connects to line being protected (e.g., 12 V rail or sensor output); blocks reverse leakage up to 20 V |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Handles automotive load-dump transients without degradation over rated lifetime |
| AEC-Q101 qualification | Validated for use in engine control, body electronics, and ADAS modules requiring automotive reliability |
| 30 kV HBM ESD immunity | Eliminates need for additional board-level ESD components in sensor interface designs |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response) |
| Halogen-free, RoHS-compliant | Meets global environmental compliance mandates without sacrificing surge performance |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rails and CAN transceiver power pins from alternator load-dump spikes and relay coil flyback. IC Role / Device Role / Timing Role: Clamping TVS placed between power input and ground, responding within <1 ns to limit voltage to ≤32.4 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and transceivers during ISO 7637-2 Pulse 5a events. | Use Scenario: Shields analog outputs of pressure/temperature sensors in factory automation systems from motor drive noise and cable ESD. IC Role / Device Role / Timing Role: Unidirectional shunt protector on 0–5 V or 4–20 mA signal paths, with <2 μA leakage at 20 V. Use Value: Maintains signal integrity and avoids false readings caused by sub-100 ns transients induced by nearby VFDs. |
| Telecom Power Supply Input | Consumer Appliance Motor Driver Stage |
Use Scenario: Guards AC/DC adapter DC output against lightning-induced surges entering via long interconnect cables. IC Role / Device Role / Timing Role: Primary surge clamp on secondary-side 24 V bus, absorbing 5000 W pulses per IEC 61000-4-5. Use Value: Enables compliance with EN 61000-4-5 Level 4 (4 kV line-earth) without external MOV staging. | Use Scenario: Suppresses inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge high-side FET drains, clamping flyback to ≤32.4 V. Use Value: Extends MOSFET lifetime by limiting VDS stress during commutation, reducing failure rate in high-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-HF | Lower PPPM (400 W), SMA package (smaller footprint), same VWM/VBR range | Not AEC-Q101 qualified; limited to consumer/industrial grade | Select for space-constrained PCBs where surge energy is ≤400 W and automotive qualification is not required. |
| SMCJ20A | Same SMC package and 5000 W rating, but non-AEC-Q101 and standard M3 suffix (not HM3) | Lacks automotive qualification and 30 kV HBM ESD rating | Choose for cost-sensitive industrial power supplies where AEC-Q101 and enhanced ESD immunity are unnecessary. |
Compared with SMAJ20A-HF and SMCJ20A, the SMC5K20AHM3_A/H delivers automotive-grade reliability, higher ESD immunity, and guaranteed AEC-Q101 validation-making it the only option among the three qualified for under-hood automotive electronics.
Availability
SMC5K20AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drivers requiring stable component supply across multi-year production cycles.
Supply support for SMC5K20AHM3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMC5KxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 30 kV ESD immunity are mandatory.
FAQ
What is the breakdown voltage range of the SMC5K20AHM3_A/H?
The SMC5K20AHM3_A/H has a specified breakdown voltage (VBR) range of 22.2 V to 24.5 V at 1.0 mA test current. This ensures consistent clamping behavior above the 20 V stand-off voltage while maintaining margin against normal operating fluctuations. The value is measured per ANSI/IEEE C62.35 and verified during AEC-Q101 qualification testing.
Is the SMC5K20AHM3_A/H suitable for automotive applications?
Yes, the SMC5K20AHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use, with ordering code suffix "HM3" confirming qualification for SMC5K10A to SMC5K20A types. It meets stringent requirements for temperature cycling, humidity bias, and mechanical shock-making it appropriate for engine control, body electronics, and ADAS modules.
What is the maximum clamping voltage of the SMC5K20AHM3_A/H at rated surge current?
The SMC5K20AHM3_A/H clamps to a maximum of 32.4 V at its peak pulse current of 154 A under the 10/1000 μs waveform. This value is guaranteed per datasheet Table "ELECTRICAL CHARACTERISTICS" and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does the SMC5K20AHM3_A/H have ESD protection certification?
Yes, the SMC5K20AHM3_A/H is certified to IEC 61000-4-2 with 30 kV human body model (HBM) immunity in both contact and air discharge modes. This rating is confirmed in the "IMMUNITY TO STATIC ELECTRICAL DISCHARGE" section of the Vishay datasheet 87742 and supports robust board-level ESD hardening without supplemental protection.
What packaging format is used for the SMC5K20AHM3_A/H?
The SMC5K20AHM3_A/H is supplied in 7-inch diameter plastic tape and reel packaging, with a base quantity of 850 units per reel. The "H" in the ordering code denotes this delivery mode, and the "_A" indicates revision level A-consistent with Vishay's standardized SMC package tape-and-reel configuration for automated SMT placement.
SMC5K20AHM3_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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 154.3A
- 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 (SMCJ)
SMC5K20AHM3_A/H FAQ
1.How can I place an order for SMC5K20AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K20AHM3_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 SMC5K20AHM3_A/H reliable?
The price and inventory of SMC5K20AHM3_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 SMC5K20AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC5K20AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K20AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K20AHM3_A/H?
SMC5K20AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K20AHM3_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 SMC5K20AHM3_A/H?
For technical support, including SMC5K20AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K20AHM3_A/H requirements.
6.How does Aetrix verify that SMC5K20AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC5K20AHM3_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 SMC5K20AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC5K20AHM3_A/H?
All SMC5K20AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K20AHM3_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 SMC5K20AHM3_A/H part is unused and in its original packaging.
Return procedure for SMC5K20AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K20AHM3_A/H Tags
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