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Vishay General Semiconductor - Diodes Division 3KASMC10HE3/9AT
- Part No.:
- 3KASMC10HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC10HE3/9AT.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,851
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Product details
Overview
3KASMC10HE3/9AT 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, 11.1–12.3 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), 177 A peak surge current, and 17.0 V clamping voltage at IPPM - deployed for automotive power line and sensor signal protection.
For engineers reviewing the 3KASMC10HE3/9AT datasheet, 3KASMC10HE3/9AT pinout, 3KASMC10HE3/9AT application, or 3KASMC10HE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 77.5 °C/W), junction temperature rating up to +185 °C, and DO-214AB mechanical layout for PCB design validation.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It operates under uni-directional polarity with color-band cathode identification and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Designed for automotive-grade reliability, the 3KASMC10HE3/9AT supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and delivers stable clamping performance across -65 °C to +185 °C junction temperature range, with VF ≤ 3.5 V at 100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum reverse stand-off voltage before conduction; defines safe operating window for protected circuit. |
| VBR @ IT = 1 mA | 11.1–12.3 V - breakdown threshold ensuring reliable turn-on during transients without false triggering. |
| PPPM | 3000 W (10/1000 μs) - peak pulse power handling capacity for automotive load-dump and ISO 7637-2 compliance. |
| IPPM | 177 A - peak surge current capability at clamping voltage of 17.0 V; determines minimum trace width and fuse sizing. |
| TJ max | +185 °C - extended junction temperature rating enabling use in under-hood automotive modules without derating. |
| RθJA | 77.5 °C/W - thermal resistance from junction to ambient; informs heatsinking requirements on standard FR-4 PCB. |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements including HTRB, HTGB, and TCT. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant, 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 in uni-directional clamp configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or sensor output); color band identifies this end. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<5 μA at VWM) and long-term reliability under thermal cycling. |
| High-temperature operation | TJ = 185 °C enables deployment in engine control units and ADAS modules without external cooling. |
| Low clamping ratio | VC/VBR ≈ 1.43 - tight voltage margin between breakdown and clamping improves system-level overvoltage margin. |
| Fast response time | <1.0 ps - intrinsic diode response ensures clamping before downstream IC damage in ESD or EFT events. |
| MSL Level 1 | Rated for peak reflow at 260 °C - compatible with standard lead-free SMT assembly without moisture sensitivity concerns. |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Suppressing load dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed circuits in vehicles. IC Role / Device Role / Timing Role: Uni-directional TVS clamps positive-going surges above 12 V while remaining inert during normal operation. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers powered from unprotected battery rails. |
Use Scenario: Protecting analog sensor inputs (e.g., MAP, TPS) in engine control units exposed to ignition noise and relay switching spikes. IC Role / Device Role / Timing Role: Fast-clamping TVS shunts transient energy before it reaches precision ADC front-ends or op-amp buffers. Use Value: Maintains signal integrity and measurement accuracy under repetitive 100 V/50 ns transients typical in combustion environments. |
| Industrial Motor Drive Gate Driver Protection | Telecom DC Power Interface |
Use Scenario: Shielding isolated gate drivers (e.g., SiC MOSFET drivers) from inductive kickback during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Placed across driver supply pins to clamp voltage overshoot during fast dV/dt transitions. Use Value: Eliminates need for external RC snubbers and reduces component count while maintaining >100 kV/μs immunity. |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, access points) against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: Withstands 3000 W pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV line-to-ground) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Lower PPPM (400 W), same DO-214AC (SMA) package, VBR = 11.1–12.3 V, VC = 16.0 V at 24.4 A. | Not AEC-Q101 qualified; limited to consumer/industrial use; insufficient for automotive load dump. | Select only for cost-sensitive, non-automotive designs where peak surge energy is <100 mJ. |
| 1.5KE10A | Through-hole DO-201 package, higher VC = 17.0 V at 175 A, same VWM/VBR, but RθJA ≈ 15 °C/W (heatsink-dependent). | Requires manual soldering or wave soldering; incompatible with automated SMT lines; no MSL rating. | Choose only when board space allows axial/DO-201 mounting and thermal management includes heatsinking. |
Compared with SMAJ10A and 1.5KE10A, the 3KASMC10HE3/9AT uniquely combines AEC-Q101 qualification, SMT-compatible DO-214AB packaging, 3000 W pulse rating, and +185 °C operation - making it the sole option for high-reliability automotive SMT designs requiring zero derating at elevated ambient temperatures.
Availability
3KASMC10HE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, telecom power interfaces, and sensor signal conditioning requiring stable component supply across extended temperature and high-surge environments.
Supply support for 3KASMC10HE3/9AT 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 3KASMC10HE3/9AT belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the 3KASMC10HE3/9AT at its rated peak pulse current?
The 3KASMC10HE3/9AT has a maximum clamping voltage (VC) of 17.0 V at its peak pulse current (IPPM) of 177 A, measured under the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 17.0 V during worst-case transients. The 3KASMC10HE3/9AT maintains this clamping performance without degradation after repeated surge events when operated within its specified thermal limits.
Is the 3KASMC10HE3/9AT qualified for automotive applications?
Yes, the 3KASMC10HE3/9AT is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and unbiased highly accelerated stress testing (uHAST). Its +185 °C maximum junction temperature and DO-214AB package with MSL Level 1 rating make the 3KASMC10HE3/9AT suitable for under-hood automotive modules such as ECUs, body control units, and ADAS sensors.
What is the package type and mounting configuration of the 3KASMC10HE3/9AT?
The 3KASMC10HE3/9AT uses the DO-214AB (SMC) surface-mount package with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. It features a cathode identification band and is supplied in 13-inch tape-and-reel format (3500 units per reel, code 9AT). The 3KASMC10HE3/9AT requires standard SMT reflow profiles and does not require pre-baking due to its MSL Level 1 classification.
How does the 3KASMC10HE3/9AT compare to standard SMAJ-series TVS diodes?
The 3KASMC10HE3/9AT delivers 7.5× higher peak pulse power (3000 W vs. 400 W for SMAJ10A) and is AEC-Q101 qualified, whereas SMAJ10A is intended for commercial/industrial use only. Both share similar VWM and VBR, but the 3KASMC10HE3/9AT's lower RθJA (77.5 °C/W vs. ~100 °C/W for SMAJ) and +185 °C rating enable sustained operation in high-ambient automotive zones where the 3KASMC10HE3/9AT remains fully functional without derating.
What is the maximum reverse leakage current of the 3KASMC10HE3/9AT at rated stand-off voltage?
At VWM = 10 V and TA = 25 °C, the 3KASMC10HE3/9AT exhibits a maximum reverse leakage current (IR) of 5.0 μA. At elevated temperature (TJ = 150 °C), leakage increases to 50 μA - still well within safe margins for most 12 V systems. This low leakage ensures minimal standby power loss and avoids false triggering in high-impedance sensor circuits protected by the 3KASMC10HE3/9AT.
3KASMC10HE3/9AT 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:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 160A
- 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)
3KASMC10HE3/9AT FAQ
1.How can I place an order for 3KASMC10HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC10HE3/9AT 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 3KASMC10HE3/9AT reliable?
The price and inventory of 3KASMC10HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC10HE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC10HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC10HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC10HE3/9AT?
3KASMC10HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC10HE3/9AT 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 3KASMC10HE3/9AT?
For technical support, including 3KASMC10HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC10HE3/9AT requirements.
6.How does Aetrix verify that 3KASMC10HE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC10HE3/9AT 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 3KASMC10HE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC10HE3/9AT?
All 3KASMC10HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC10HE3/9AT, 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 3KASMC10HE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC10HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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