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Vishay General Semiconductor - Diodes Division 3KASMC10AHE3_B/I
- Part No.:
- 3KASMC10AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC10AHE3_B/I.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,184
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Product details
Overview
3KASMC10AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in SMC (DO-214AB) package, rated for 10 V stand-off voltage, 11.1–12.3 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), 177 A peak pulse current, and 17.0 V clamping voltage at IPPM - used to protect automotive sensor signal lines and MOSFET gates against inductive switching transients.
For engineers reviewing the 3KASMC10AHE3_B/I datasheet, 3KASMC10AHE3_B/I pinout, 3KASMC10AHE3_B/I application, or 3KASMC10AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, TJ = 185 °C operation, MSL Level 1 rating, and 3000 W surge capability under standardized waveform conditions.
Technical Context
This device employs passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability and reliability. It delivers low incremental surge resistance and fast response time to clamp transient overvoltages before downstream ICs or power devices are damaged.
Designed specifically for automotive-grade applications, the 3KASMC10AHE3_B/I meets AEC-Q101 qualification and supports operation up to TJ = 185 °C. Its SMC package enables robust thermal dissipation with RθJL = 18.3 °C/W and complies with J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/typ/max) | 11.1 / 11.7 / 12.3 V at IT = 1 mA - precise breakdown threshold ensures predictable turn-on during transients |
| VC at IPPM | 17.0 V - clamping voltage at 177 A peak pulse defines worst-case stress on protected circuitry |
| PPPM | 3000 W - peak pulse power handling with 10/1000 μs waveform per IEC 61000-4-5 |
| TJ max. | +185 °C - enables use in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.06 mm lead spacing |
Pinout & Package
SMC (DO-214AB) package with two terminals: cathode (marked end) and anode. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier | Enables stable VBR drift ≤ 0.069 %/°C and reliable operation at TJ = 185 °C |
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| MSL Level 1 (260 °C) | Allows single-reflow assembly without moisture sensitivity concerns or baking requirements |
| 3000 W peak pulse rating | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 4 surges in compact SMC form factor |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting LIN bus or CAN FD transceiver input pins from load-dump and inductive kickback in vehicle body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground to clamp transients before they reach the transceiver ESD structure. Use Value: Prevents latch-up or permanent damage to transceivers during 12 V system load dump events (up to 40 V, 100 ms) and ISO 7637-2 pulses. | Use Scenario: Shielding high-side and low-side gate drivers in 3-phase BLDC motor inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-clamping TVS placed across gate-source terminals of SiC MOSFETs to suppress dv/dt-induced false turn-on. Use Value: Limits gate voltage overshoot to ≤17.0 V, preserving driver integrity and preventing unintended conduction during switching transitions. |
| Telecom Power Supply Input Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Safeguarding primary-side controller ICs and bulk capacitor inputs in PoE-powered telecom equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS connected between DC input rail and chassis ground to absorb common-mode transients entering via Ethernet ports. Use Value: Clamps 3000 W surges within 1 ns, limiting voltage rise across input filter capacitors and avoiding overvoltage failure of controller ICs. | Use Scenario: Adding secondary-side surge protection in USB-C PD adapters to meet UL 1449 Type 4 requirements for end-user plug-in devices. IC Role / Device Role / Timing Role: Final-stage TVS on +5 V/9 V/15 V/20 V output rails to suppress ESD and fast transients coupled through cables. Use Value: Maintains regulated output voltage integrity during 8 kV contact ESD events, ensuring uninterrupted charging of connected mobile devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/5AT | Lower PPPM (400 W), same VWM (10 V), SMC package, AEC-Q101 not specified | Not qualified for automotive under-hood use; suitable for industrial/commercial grade systems only | Select when cost sensitivity outweighs automotive qualification and 3000 W surge margin is unnecessary |
| 1.5KE10A | Higher VBR (11.1–12.2 V), axial DO-201 package, 1500 W PPPM, no AEC-Q101 | Through-hole mounting limits PCB density; unsuitable for automated SMT production or high-vibration environments | Choose only for legacy designs requiring axial components or where board space allows larger footprint |
Compared with SMAJ10A-E3/5AT and 1.5KE10A, the 3KASMC10AHE3_B/I provides triple the surge power rating, guaranteed automotive qualification, and surface-mount compatibility - making it the preferred choice for next-generation automotive and high-reliability industrial designs demanding robust, scalable transient protection.
Availability
3KASMC10AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interface protection, industrial motor drive gate protection, and telecom power supply input protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 3KASMC10AHE3_B/I 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, and power MOSFETs with emphasis on reliability, thermal performance, and automotive qualification.
The 3KASMCxxA family was engineered for high-energy transient suppression in harsh environments - targeting AEC-Q101-compliant automotive subsystems, industrial automation controllers, and infrastructure equipment where 185 °C junction operation and 3000 W surge immunity are mandatory.
FAQ
What is the clamping voltage of the 3KASMC10AHE3_B/I at its rated peak pulse current?
The 3KASMC10AHE3_B/I has a maximum clamping voltage (VC) of 17.0 V at its rated peak pulse current (IPPM) of 177 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a full-rated transient event and is critical for ensuring downstream ICs remain within their absolute maximum ratings. The 3KASMC10AHE3_B/I achieves this clamping performance while maintaining low dynamic impedance.
Is the 3KASMC10AHE3_B/I qualified for automotive applications?
Yes, the 3KASMC10AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's documentation for base P/NHE3 variants. It is specifically intended for automotive use cases including engine control units, ADAS sensors, and body electronics where operation up to TJ = 185 °C and resistance to mechanical vibration, thermal cycling, and humidity are required. The HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction.
What is the thermal resistance from junction to leads (RθJL) for the 3KASMC10AHE3_B/I?
The 3KASMC10AHE3_B/I has a typical thermal resistance from junction to leads (RθJL) of 18.3 °C/W, enabling efficient heat transfer from the silicon die to the PCB copper pads through the SMC package leads. This parameter directly supports sustained power dissipation and high-temperature reliability, especially when mounted on minimum recommended pad layout per Vishay specification. RθJL is measured under controlled lab conditions and informs thermal design margins for the 3KASMC10AHE3_B/I in real-world layouts.
Does the 3KASMC10AHE3_B/I have unidirectional or bidirectional polarity?
The 3KASMC10AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet. Its polarity is indicated by a cathode band on the SMC package, and it conducts surge current only when the cathode is at a higher potential than the anode. This configuration makes the 3KASMC10AHE3_B/I appropriate for protecting DC lines against positive-going transients but not for AC or bipolar signal paths requiring symmetrical clamping.
What is the maximum peak forward surge current (IFSM) rating for the 3KASMC10AHE3_B/I?
The 3KASMC10AHE3_B/I has a maximum non-repetitive peak forward surge current (IFSM) rating of 200 A, tested using an 8.3 ms single half-sine waveform per JEDEC standards. This rating reflects the device's ability to survive short-duration inrush or fault currents without bond wire fusing or junction failure. The 3KASMC10AHE3_B/I maintains this capability across its full operating temperature range, supporting robustness in motor drive and power supply applications.
3KASMC10AHE3_B/I 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 177A
- Power - Peak Pulse:
- 3000W (3kW)
- 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)
3KASMC10AHE3_B/I FAQ
1.How can I place an order for 3KASMC10AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC10AHE3_B/I 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 3KASMC10AHE3_B/I reliable?
The price and inventory of 3KASMC10AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC10AHE3_B/I is usually 5 days.
3.What payment methods are accepted for 3KASMC10AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC10AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC10AHE3_B/I?
3KASMC10AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC10AHE3_B/I 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 3KASMC10AHE3_B/I?
For technical support, including 3KASMC10AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC10AHE3_B/I requirements.
6.How does Aetrix verify that 3KASMC10AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC10AHE3_B/I 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 3KASMC10AHE3_B/I meets industry standards.
7.What is the process for return or replacement of 3KASMC10AHE3_B/I?
All 3KASMC10AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC10AHE3_B/I, 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 3KASMC10AHE3_B/I part is unused and in its original packaging.
Return procedure for 3KASMC10AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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