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Vishay General Semiconductor - Diodes Division 3KASMC11AHE3/57T
- Part No.:
- 3KASMC11AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC11AHE3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,529
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Product details
Overview
3KASMC11AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 18.2 V under 165 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and ICs against inductive switching transients in engine control units and motor drives.
For engineers reviewing the 3KASMC11AHE3/57T datasheet, 3KASMC11AHE3/57T pinout, 3KASMC11AHE3/57T application, or 3KASMC11AHE3/57T equivalent, key selection criteria include its 11 V stand-off voltage, AEC-Q101 qualification, DO-214AB (SMC) package thermal performance, and verified clamping behavior under repetitive surge stress per JESD22-B102 and J-STD-020 MSL Level 1.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for stable breakdown and low incremental surge resistance. Its unidirectional architecture provides forward conduction during overvoltage events while maintaining tight 12.2–13.5 V breakdown tolerance at 1 mA test current.
Thermal design is enabled by RθJA = 77.5 °C/W and RθJL = 18.3 °C/W, supporting operation at TJ = 185 °C with derated power above 25 °C ambient. The device meets MSL Level 1 reflow (260 °C peak) and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 11 V - maximum reverse voltage before clamping begins; defines safe operating margin for 12 V nominal systems |
| Breakdown Voltage (VBR) | 12.2–13.5 V at 1 mA - ensures reliable turn-on during fast transients without premature conduction |
| Clamping Voltage (VC) | 18.2 V at 165 A (10/1000 μs) - limits downstream voltage stress on protected MOSFETs or gate drivers |
| Peak Pulse Power (PPPM) | 3000 W - sustains high-energy surges typical of automotive load-dump and ISO 7637-2 pulses |
| Junction Temperature Range | –65 °C to +185 °C - enables deployment in under-hood ECUs and industrial motor controllers |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | DO-214AB (SMC) - industry-standard SMT outline with 7.11 mm × 6.22 mm footprint and 3.20 mm height |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional polarity with cathode band marking. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during clamping | Connected to protected circuit ground or low-side return path; forms forward-biased path during positive transients |
| Cathode | Current exit during clamping | Connected to protected line (e.g., 12 V rail); color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature capability | TJ max = 185 °C supports under-hood automotive placement without derating penalties |
| Low incremental surge resistance | Enables tighter clamping voltage window across full surge current range (10–165 A) |
| Fast response time | Sub-nanosecond turn-on ensures protection before sensitive downstream components experience overstress |
| MSL Level 1 compliance | Enables single-reflow assembly without moisture sensitivity concerns (260 °C peak) |
| Junction passivation | Optimized die surface treatment improves long-term stability under thermal cycling and humidity |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protection of microcontroller I/O and power supply inputs against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly at ECU power entry point. Use Value: Clamps 18.2 V at 165 A, limiting voltage seen by 3.3 V/5 V regulators and CAN transceivers during 3000 W surges. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors from inductive kickback during PWM switching. IC Role / Device Role / Timing Role: High-power transient suppressor mounted across DC link capacitor terminals. Use Value: Withstands 200 A non-repetitive forward surge (8.3 ms half-sine), preventing driver latch-up during fault conditions. |
| Telecom Power Supply Input | Consumer Appliance Main Board |
Use Scenario: Surge immunity enhancement for AC/DC front-end rectifiers exposed to lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary-level TVS placed after input fuse and before bulk capacitor. Use Value: 3000 W peak pulse rating handles 2 kV/2 Ω combination wave with <1% degradation after 1000 pulses. |
Use Scenario: Overvoltage protection for microcontroller reset lines and sensor interface circuits in washing machines and HVAC controls. IC Role / Device Role / Timing Role: Localized clamping device adjacent to sensitive analog inputs and reset ICs. Use Value: 11 V stand-off voltage aligns with 12 V system rails while providing 7.2 V headroom to VCC pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Lower PPPM (400 W), same DO-214AC (SMA) package, VC = 18.2 V at 21.9 A | Not suitable for automotive load-dump; limited to low-energy consumer electronics | Select 3KASMC11AHE3/57T when >1000 W surge handling and AEC-Q101 compliance are required |
| 1.5KE11A | Higher VC (19.5 V), through-hole DO-201AE package, PPPM = 1500 W | Requires PCB real estate and wave-solder process; not MSL-compliant | Choose 3KASMC11AHE3/57T for SMT scalability, thermal performance, and automotive production readiness |
Compared with SMAJ11A and 1.5KE11A, the 3KASMC11AHE3/57T offers 7.5× higher peak pulse power, AEC-Q101 qualification, and superior thermal resistance (RθJL = 18.3 °C/W), making it the only option qualified for under-hood automotive deployment with zero layout compromise.
Availability
3KASMC11AHE3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive systems, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 3KASMC11AHE3/57T 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® TVS platform, engineered specifically for high-temperature, high-surge environments where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the 3KASMC11AHE3/57T under standard surge conditions?
The 3KASMC11AHE3/57T exhibits a maximum clamping voltage (VC) of 18.2 V when subjected to a 10/1000 μs waveform at 165 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 05-Mar-13, ensuring predictable voltage limiting during automotive load-dump events.
Is the 3KASMC11AHE3/57T qualified for automotive applications?
Yes, the 3KASMC11AHE3/57T is AEC-Q101 qualified and rated for operation up to 185 °C junction temperature. It meets JESD22-B102 solderability, JESD201 Class 2 whisker resistance, and J-STD-020 MSL Level 1 reflow requirements - all documented in Vishay document 89962 for the 3KASMC11AHE3/57T.
What package type does the 3KASMC11AHE3/57T use, and what are its key mechanical features?
The 3KASMC11AHE3/57T uses the DO-214AB (SMC) surface-mount package with dimensions 7.11 mm × 6.22 mm × 3.20 mm. Its matte tin-plated leads comply with J-STD-002, the molding compound meets UL 94 V-0, and the cathode band provides unambiguous polarity identification - all specified for the 3KASMC11AHE3/57T in the official Vishay datasheet.
How does the 3KASMC11AHE3/57T compare to standard SMAJ-series TVS diodes in surge handling capability?
The 3KASMC11AHE3/57T delivers 3000 W peak pulse power, versus 400 W for SMAJ11A - a 7.5× increase. It also supports 165 A surge current (vs. 21.9 A) and operates at 185 °C (vs. 150 °C). These differences make the 3KASMC11AHE3/57T suitable for automotive load-dump, while SMAJ11A is limited to consumer-grade surge suppression.
What is the reverse leakage current specification for the 3KASMC11AHE3/57T at its stand-off voltage?
At VWM = 11 V and TA = 25 °C, the 3KASMC11AHE3/57T specifies a maximum reverse leakage current (IR) of 5.0 μA. At elevated temperature (TJ = 150 °C), leakage increases to 50 μA - both values are explicitly listed in the Electrical Characteristics table of the Vishay 89962 datasheet for the 3KASMC11AHE3/57T.
3KASMC11AHE3/57T 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 165A
- 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)
3KASMC11AHE3/57T FAQ
1.How can I place an order for 3KASMC11AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC11AHE3/57T 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 3KASMC11AHE3/57T reliable?
The price and inventory of 3KASMC11AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC11AHE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC11AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC11AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC11AHE3/57T?
3KASMC11AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC11AHE3/57T 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 3KASMC11AHE3/57T?
For technical support, including 3KASMC11AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC11AHE3/57T requirements.
6.How does Aetrix verify that 3KASMC11AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC11AHE3/57T 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 3KASMC11AHE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC11AHE3/57T?
All 3KASMC11AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC11AHE3/57T, 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 3KASMC11AHE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC11AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC11AHE3/57T Tags
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