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Vishay General Semiconductor - Diodes Division 5KASMC20AHM3_A/H
- Part No.:
- 5KASMC20AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC20AHM3_A/H.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,234
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Product details
Overview
5KASMC20AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown (VBR), 32.4 V clamping voltage (VC) at 154.3 A peak pulse current, and 5000 W peak pulse power (10/1000 μs). It delivers high-reliability overvoltage protection for automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the 5KASMC20AHM3_A/H datasheet, 5KASMC20AHM3_A/H pinout, 5KASMC20AHM3_A/H application, or 5KASMC20AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C maximum junction temperature, low incremental surge resistance, MSL Level 1 rating, and halogen-free RoHS-compliant HM3 packaging.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge stress and high-temperature operation up to 185 °C. Its unidirectional polarity and 10/1000 μs waveform response enable precise protection of sensitive IC inputs against inductive switching transients.
The device exhibits 0.085 %/°C typical temperature coefficient of VBR and 100 °C/W junction-to-ambient thermal resistance on minimum pad layout. Its 20.0 V stand-off voltage ensures compatibility with 18–24 V automotive supply rails while maintaining low leakage (<2.0 μA at VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins; matches 18–24 V system rails. |
| VBR (min/typ/max) | 22.2 / 23.4 / 24.5 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold consistency. |
| VC @ IPPM | 32.4 V - Clamping voltage at 154.3 A peak pulse current; limits protected circuit voltage during surge. |
| PPPM (10/1000 μs) | 5000 W - Peak pulse power handling capability; supports high-energy transients in automotive environments. |
| TJ max. | +185 °C - Enables operation in under-hood automotive locations without derating. |
| IR @ VWM | <2.0 μA - Low reverse leakage preserves signal integrity and minimizes standby power loss. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronic components including temperature cycling and HTRB. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient energy to ground when voltage exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity exposure. |
| High-temperature operation | TJ max. = 185 °C enables use in engine control units, transmission modules, and other high-ambient zones. |
| Low clamping ratio | VC/VBR ≈ 1.38 ensures minimal overvoltage margin between breakdown and clamping, enhancing protection precision. |
| Fast response time | Sub-nanosecond turn-on protects downstream CMOS inputs from ESD and load-dump spikes before damage occurs. |
| MSL Level 1 compliance | Rated for 260 °C peak reflow without popcorn cracking or delamination; supports standard SMT assembly processes. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine management systems exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤32.4 V during 5000 W surges, preventing ADC saturation and input-stage latch-up. |
Use Scenario: Shielding high-side and low-side gate drivers in 3-phase inverters from Miller-induced voltage spikes during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: TVS placed across gate-source terminals to clamp dv/dt-induced overshoot. Use Value: Fast clamping at 22.2–24.5 V breakdown prevents false turn-on and gate oxide stress in SiC and silicon power devices. |
| Telecom Power Interface | Consumer Power Adapter Output |
Use Scenario: Safeguarding PoE-powered Ethernet PHY interfaces against induced lightning surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; unidirectional 5KASMC20AHM3_A/H used on DC bias rail side only. Use Value: Withstands 10/1000 μs surges per IEC 61000-4-5 Level 4 while maintaining <2.0 μA leakage at 20 V nominal rail. |
Use Scenario: Overvoltage suppression on 19–20 V DC output rails of laptop AC adapters subject to open-load transients. IC Role / Device Role / Timing Role: TVS connected between output and ground to clamp regulator failure or feedback loop instability events. Use Value: 32.4 V clamping voltage ensures downstream USB-C PD controllers remain within absolute maximum ratings during fault conditions. |
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 | Lower PPPM (400 W), higher VC (32.4 V same), same VWM/VBR range, SMA package (smaller footprint, lower thermal mass). | Limited to low-energy consumer electronics; unsuitable for automotive AEC-Q101 or 5000 W surge requirements. | Select only for cost-sensitive, non-automotive designs where surge energy is ≤400 W. |
| SMCJ20A | Same SMC package, identical VWM/VBR/VC specs, but rated for 1500 W PPPM (not 5000 W); lacks AEC-Q101 qualification. | Acceptable for industrial control panels with moderate surge exposure, but not for under-hood automotive deployment. | Choose when full 5000 W capability is unnecessary and AEC-Q101 is not mandated. |
Compared with SMAJ20A and SMCJ20A, the 5KASMC20AHM3_A/H provides triple the peak pulse power (5000 W vs. 400 W/1500 W), guaranteed AEC-Q101 qualification, and 185 °C junction rating-making it uniquely suited for high-reliability automotive and industrial power interface protection.
Availability
5KASMC20AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate circuits, telecom power interfaces, and consumer power adapter outputs requiring stable component supply and long-term lifecycle support.
Supply support for 5KASMC20AHM3_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, high-temperature performance, and automotive-grade qualification.
The 5KASMCxxA series was engineered specifically for high-energy transient suppression in harsh automotive and industrial environments, combining AEC-Q101 compliance, 185 °C operation, and 5000 W surge capability in the rugged SMC package.
FAQ
What is the clamping voltage of the 5KASMC20AHM3_A/H at its rated peak pulse current?
The 5KASMC20AHM3_A/H has a maximum clamping voltage (VC) of 32.4 V at 154.3 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value ensures protected circuits remain below critical voltage thresholds during high-energy transients. The 5KASMC20AHM3_A/H maintains this clamping performance across its full operating temperature range and is validated per AEC-Q101 stress testing protocols.
Is the 5KASMC20AHM3_A/H qualified for automotive applications?
Yes, the 5KASMC20AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications including engine control units, transmission control modules, and ADAS sensor interfaces. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance-key requirements for automotive-grade components.
What package type does the 5KASMC20AHM3_A/H use, and what are its mounting requirements?
The 5KASMC20AHM3_A/H uses the SMC (DO-214AB) surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. It requires the minimum recommended pad layout per Vishay specification to achieve rated thermal performance (RθJA = 100 °C/W). The cathode is marked by a color band; no special mounting hardware or heatsinking is required for standard 5000 W surge duty.
How does the 5KASMC20AHM3_A/H compare to standard SMAJ or SMCJ series TVS diodes?
The 5KASMC20AHM3_A/H delivers 5000 W peak pulse power-more than three times that of SMCJ20A (1500 W) and twelve times that of SMAJ20A (400 W)-while sharing the same VWM (20 V) and comparable VBR (22.2–24.5 V). Unlike those alternatives, the 5KASMC20AHM3_A/H is AEC-Q101 qualified and rated for TJ = 185 °C, enabling use in demanding automotive and industrial settings where sustained thermal stress is present.
What is the reverse leakage current specification for the 5KASMC20AHM3_A/H at its stand-off voltage?
The 5KASMC20AHM3_A/H specifies a maximum reverse leakage current (IR) of 2.0 μA at its 20 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated junction temperature (TJ = 150 °C), leakage increases to a maximum of 50 μA-still well within safe limits for protecting low-power sensor interfaces and logic-level circuits without introducing significant standby current drain.
5KASMC20AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5KASMC20AHM3_A/H FAQ
1.How can I place an order for 5KASMC20AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC20AHM3_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 5KASMC20AHM3_A/H reliable?
The price and inventory of 5KASMC20AHM3_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 5KASMC20AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 5KASMC20AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC20AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC20AHM3_A/H?
5KASMC20AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC20AHM3_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 5KASMC20AHM3_A/H?
For technical support, including 5KASMC20AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC20AHM3_A/H requirements.
6.How does Aetrix verify that 5KASMC20AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 5KASMC20AHM3_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 5KASMC20AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 5KASMC20AHM3_A/H?
All 5KASMC20AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC20AHM3_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 5KASMC20AHM3_A/H part is unused and in its original packaging.
Return procedure for 5KASMC20AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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