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Vishay General Semiconductor - Diodes Division 3KASMC10AHM3_A/I
- Part No.:
- 3KASMC10AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC10AHM3_A/I.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,063
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Product details
Overview
3KASMC10AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® 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-grade ESD and load-dump protection on power rails and signal lines of engine control units and sensor interfaces.
For engineers reviewing the 3KASMC10AHM3_A/I datasheet, 3KASMC10AHM3_A/I pinout, 3KASMC10AHM3_A/I application, or 3KASMC10AHM3_A/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, DO-214AB mechanical layout, and direct alternatives with documented clamping and surge current differences.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve 185 °C maximum junction temperature and stable clamping under high-temperature automotive conditions. Its unidirectional polarity and low incremental surge resistance enable precise overvoltage limiting during inductive switching transients.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak, and its 77.5 °C/W junction-to-ambient thermal resistance is measured on minimum recommended pad layout - critical for thermal design validation in compact engine bay PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum reverse working voltage before conduction; defines safe operating range for 12 V automotive systems. |
| VBR min/max | 11.1 V / 12.3 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on during transients. |
| PPPM | 3000 W (10/1000 μs) - sustains high-energy surges without failure in alternator load-dump events. |
| VC @ IPPM | 17.0 V - clamping voltage at 177 A peak current; limits downstream IC stress below 20 V threshold. |
| TJ max | +185 °C - enables operation in under-hood environments exceeding standard industrial temperature limits. |
| AEC-Q101 | Qualified - certified for automotive electronic modules requiring zero-defect reliability and lifetime validation. |
| RθJA | 77.5 °C/W - thermal resistance measured on minimum pad layout; informs heatsinking requirements for sustained surge duty. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; completes transient current path during clamping. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., battery feed); conducts surge current when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<5 μA at VWM) across -65 °C to +185 °C. |
| Peak pulse power | 3000 W capability supports ISO 7637-2 Pulse 5a (load dump) compliance without external snubbers. |
| Clamping ratio | VC/VBR ≈ 1.43 - low ratio minimizes overvoltage overshoot during fast 10/1000 μs transients. |
| Response time | <1.0 ps - intrinsic diode speed enables protection of high-speed CAN and LIN bus lines. |
| MSL Level 1 | Rated for 260 °C peak reflow; eliminates moisture-related popcorning during automated assembly. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Input |
|---|---|
Use Scenario: Protects microcontroller power supply and CAN transceiver pins from alternator load-dump spikes and relay coil flyback in engine bays. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients above 11.1 V while remaining non-conductive below 10 V stand-off. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic rails during 12 V system surges up to 3000 W. |
Use Scenario: Installed across DC bus inputs of variable-frequency drives to suppress IGBT switching-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response voltage clamp diverts surge energy away from rectifier bridge and bus capacitors. Use Value: Extends capacitor lifetime by limiting peak bus voltage to ≤17.0 V during repetitive 100 A+ surge events. |
| Automotive Cabin Sensor Interface | Telecom Power Supply Input |
Use Scenario: Shields analog front-end of HVAC temperature sensors and seat position switches from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS absorbs ±15 kV contact ESD per IEC 61000-4-2 without signal distortion. Use Value: Maintains sub-100 pF junction capacitance at zero bias, preserving signal integrity on 10 kHz sensor outputs. |
Use Scenario: Mounted at AC-DC converter input to absorb lightning-induced surges on telecom central office power feeds. IC Role / Device Role / Timing Role: High-reliability TVS handles repeated 10/1000 μs transients up to 3000 W without parameter drift. Use Value: Sustains 185 °C junction temperature during prolonged overload, enabling operation in sealed, fanless enclosures. |
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), higher VC (16.7 V at 24.7 A), same DO-214AC (SMA) package | Not qualified to AEC-Q101; unsuitable for automotive under-hood use | Select only for cost-sensitive consumer electronics where 3000 W surge immunity is not required. |
| 1.5KE10A | Higher VBR (11.1–12.2 V), same 3000 W rating, but through-hole DO-201AE package | Larger footprint and manual assembly; incompatible with SMT-only production lines | Choose only when board-level mechanical robustness outweighs automation compatibility and thermal performance. |
Compared with SMAJ10A and 1.5KE10A, the 3KASMC10AHM3_A/I uniquely combines AEC-Q101 qualification, DO-214AB surface-mount form factor, and 185 °C junction rating - making it the sole option for automated, high-reliability automotive power rail protection where space, thermal margin, and qualification are jointly constrained.
Availability
3KASMC10AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive inputs, cabin sensor interface hardening, and telecom power supply surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 3KASMC10AHM3_A/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with focus on high-reliability, high-temperature, and automotive-qualified components.
The 3KASMC10AHM3_A/I belongs to Vishay's PAR® TVS family, engineered specifically for robust 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 3KASMC10AHM3_A/I at its rated peak pulse current?
The 3KASMC10AHM3_A/I has a maximum clamping voltage (VC) of 17.0 V at its peak pulse current (IPPM) of 177 A, measured with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet revision 05-Mar-13 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 3KASMC10AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the 3KASMC10AHM3_A/I qualified for automotive applications?
Yes, the 3KASMC10AHM3_A/I is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood automotive applications such as engine control units, body control modules, and ADAS sensor interfaces. Its DO-214AB package meets MSL Level 1 and lead-free reflow standards required for automotive manufacturing.
What does the "HM3_A/I" suffix indicate in 3KASMC10AHM3_A/I?
The "HM3" denotes the RoHS-compliant, AEC-Q101-qualified base package (DO-214AB), "_A" indicates revision level A, and "/I" specifies packaging in 13-inch plastic tape and reel with 3500 units per reel. This ordering code ensures traceable, production-ready delivery aligned with Vishay's preferred packaging configuration for high-volume SMT assembly.
How does the thermal resistance of the 3KASMC10AHM3_A/I affect PCB layout?
The 3KASMC10AHM3_A/I has a typical RθJA of 77.5 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet. To maintain TJ ≤ 185 °C under continuous 6.0 W dissipation, designers must provide adequate copper area and thermal vias - undersized pads will cause excessive junction heating and premature failure. Layout adherence directly impacts reliability in sustained surge scenarios.
Can the 3KASMC10AHM3_A/I replace older SMAJ10A devices in existing designs?
No - although both are unidirectional TVS diodes with 10 V stand-off, the 3KASMC10AHM3_A/I is not a drop-in replacement for SMAJ10A due to different package (DO-214AB vs. DO-214AC), higher surge rating (3000 W vs. 400 W), and AEC-Q101 qualification. PCB redesign and thermal validation are required; the 3KASMC10AHM3_A/I offers superior performance but demands updated layout and qualification testing.
3KASMC10AHM3_A/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:
- 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)
3KASMC10AHM3_A/I FAQ
1.How can I place an order for 3KASMC10AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC10AHM3_A/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 3KASMC10AHM3_A/I reliable?
The price and inventory of 3KASMC10AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC10AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC10AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC10AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC10AHM3_A/I?
3KASMC10AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC10AHM3_A/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 3KASMC10AHM3_A/I?
For technical support, including 3KASMC10AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC10AHM3_A/I requirements.
6.How does Aetrix verify that 3KASMC10AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC10AHM3_A/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 3KASMC10AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC10AHM3_A/I?
All 3KASMC10AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC10AHM3_A/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 3KASMC10AHM3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC10AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC10AHM3_A/I Tags
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