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Vishay General Semiconductor - Diodes Division 3KASMC10AHE3/9AT
- Part No.:
- 3KASMC10AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC10AHE3/9AT.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
3KASMC10AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - designed for automotive-grade overvoltage protection of MOSFETs, sensor signal lines, and IC power rails.
For engineers reviewing the 3KASMC10AHE3/9AT datasheet, 3KASMC10AHE3/9AT pinout, 3KASMC10AHE3/9AT application, or 3KASMC10AHE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 77.5 °C/W), clamping voltage (VC = 17.0 V at IPPM), and DO-214AB mechanical layout for PCB design and reliability validation.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature operation up to TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its unidirectional polarity and low incremental surge resistance enable fast response (<1 ns) to ESD and inductive switching transients.
The device operates within -65 °C to +185 °C junction range, delivers 177 A peak pulse current (IPPM) at 10/1000 μs waveform, and maintains ≤5.0 μA reverse leakage at VWM (10 V) and ≤50 μA at TJ = 150 °C - supporting robust protection in automotive engine control units and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 11.1 V / 12.3 V at IT = 1.0 mA - precise breakdown threshold ensures predictable turn-on during transients without false triggering. |
| PPPM | 3000 W (10/1000 μs) - sustains high-energy surges common in automotive load-dump and inductive kick events. |
| VC @ IPPM | 17.0 V - clamping voltage at 177 A peak pulse current; limits downstream voltage stress to safe levels for 12 V rail components. |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures without derating. |
| RθJA | 77.5 °C/W - thermal resistance from junction to ambient on standard PCB pad layout; informs heatsinking requirements for sustained surge duty. |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test standard, including HTRB, HTGB, and temperature cycling. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side reference; completes clamping path during reverse transient events. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V supply or sensor output); conducts when voltage exceeds VBR to shunt surge current. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage across temperature and lifetime. |
| High-temperature capability | TJ = 185 °C rating supports placement near heat sources (e.g., power converters) without performance degradation. |
| Low clamping ratio | VC/VBR ≈ 1.45 (17.0 V / 11.7 V avg) - tight voltage margin between breakdown and clamping improves system-level surge margin. |
| MSL Level 1 compliance | Rated for unlimited floor life and 260 °C peak reflow - eliminates baking requirements and simplifies SMT manufacturing. |
| Uni-directional architecture | Prevents forward conduction during normal operation while enabling rapid reverse clamping - ideal for DC power rail protection. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed at 12 V input filter stage to limit voltage excursion to ≤17.0 V during 3000 W surges. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies downstream of DC-DC converters in harsh automotive environments. |
Use Scenario: Safeguarding gate drivers and bootstrap FETs against inductive kickback from IGBT/MOSFET switching in 3-phase inverters. IC Role / Device Role / Timing Role: Fast-response (sub-ns) clamping device mounted directly at power stage input to suppress dv/dt-induced spikes. Use Value: Reduces risk of gate oxide rupture and shoot-through failure by limiting transient overshoot to 17.0 V at 177 A peak current. |
| Automotive Sensor Signal Conditioning | Telecom Power Interface Protection |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD (IEC 61000-4-2) and cable discharge events in ADAS modules. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) unidirectional TVS placed at sensor harness entry point to clamp transients before signal conditioning amplifiers. Use Value: Maintains signal integrity with minimal loading while meeting AEC-Q101 reliability for 15-year vehicle service life. |
Use Scenario: Protecting PoE-powered Ethernet ports (IEEE 802.3af/at) from lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage suppression device in front-end DC-DC converter input stage, rated for 3000 W peak pulse energy. Use Value: Enables single-stage protection architecture with 17.0 V clamping, reducing BOM count versus multi-stage TVS+MOV solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Same DO-214AC (SMA) package; lower PPPM (400 W), higher RθJA (110 °C/W), VBR = 11.1–12.3 V, VC = 16.0 V. | Limited to lower-energy transients; unsuitable for automotive load-dump or industrial motor drive surge conditions. | Select SMAJ10A only for cost-sensitive consumer electronics where 3000 W surge immunity is not required. |
| 1.5KE10A | Through-hole DO-201 package; same 3000 W rating but larger footprint, higher mounting inductance, and no AEC-Q101 qualification. | Not suitable for automated SMT assembly or automotive under-hood vibration environments due to leaded construction. | Choose 1.5KE10A only for legacy through-hole designs or prototyping where reflow compatibility and qualification are not mandatory. |
Compared with SMAJ10A and 1.5KE10A, the 3KASMC10AHE3/9AT uniquely combines AEC-Q101 qualification, DO-214AB SMT packaging, 3000 W surge capacity, and 185 °C operation - making it the only option qualified for production automotive power electronics requiring zero rework and long-term thermal stability.
Availability
3KASMC10AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom power interface protection requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 3KASMC10AHE3/9AT 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, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 3KASMC series belongs to Vishay's PAR® (Protection and Regulation) family, engineered specifically for AEC-Q101-compliant transient suppression in high-temperature, high-surge automotive and industrial power systems.
FAQ
What is the clamping voltage of the 3KASMC10AHE3/9AT at its rated peak pulse current?
The 3KASMC10AHE3/9AT has a maximum clamping voltage (VC) of 17.0 V when subjected to its peak pulse current (IPPM) of 177 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 05-Mar-13, ensuring predictable overvoltage limiting for downstream 12 V rail components.
Is the 3KASMC10AHE3/9AT qualified for automotive applications?
Yes, the 3KASMC10AHE3/9AT is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number: 89962). It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - validating its suitability for engine control units, body electronics, and ADAS modules.
What package type does the 3KASMC10AHE3/9AT use, and what are its key mechanical features?
The 3KASMC10AHE3/9AT uses the DO-214AB (SMC) surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Its molding compound meets UL 94 V-0 flammability rating, and it complies with MSL Level 1 (260 °C peak reflow), eliminating moisture sensitivity handling requirements.
Does the 3KASMC10AHE3/9AT have bidirectional or unidirectional polarity?
The 3KASMC10AHE3/9AT is unidirectional only, as confirmed in the Vishay datasheet "Features" section. Its cathode is marked by a color band, and it conducts only during reverse-biased overvoltage events - making it appropriate for DC power rail and signal line protection where forward conduction must be avoided.
What is the maximum junction temperature rating for the 3KASMC10AHE3/9AT?
The 3KASMC10AHE3/9AT is rated for a maximum junction temperature (TJ max.) of +185 °C, enabling reliable operation in under-hood automotive environments and high-temperature industrial enclosures. This rating is supported by thermal characterization data showing RθJA = 77.5 °C/W on standard PCB pad layout.
3KASMC10AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (SMCJ)
3KASMC10AHE3/9AT FAQ
1.How can I place an order for 3KASMC10AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC10AHE3/9AT 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 3KASMC10AHE3/9AT reliable?
The price and inventory of 3KASMC10AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC10AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC10AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC10AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC10AHE3/9AT?
3KASMC10AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC10AHE3/9AT 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 3KASMC10AHE3/9AT?
For technical support, including 3KASMC10AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC10AHE3/9AT requirements.
6.How does Aetrix verify that 3KASMC10AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC10AHE3/9AT 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 3KASMC10AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC10AHE3/9AT?
All 3KASMC10AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC10AHE3/9AT, 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 3KASMC10AHE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC10AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC10AHE3/9AT Tags
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