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Vishay General Semiconductor - Diodes Division 3KASMC17AHE3/9AT
- Part No.:
- 3KASMC17AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC17AHE3/9AT.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
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Product details
Overview
3KASMC17AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge clamping with 3000 W peak pulse power (10/1000 μs), 17 V stand-off voltage, and 27.6 V maximum clamping voltage at 109 A. It operates up to 185 °C junction temperature and is AEC-Q101 qualified for automotive power line and sensor interface protection.
For engineers reviewing the 3KASMC17AHE3/9AT datasheet, 3KASMC17AHE3/9AT pinout, 3KASMC17AHE3/9AT application, or 3KASMC17AHE3/9AT equivalent, this page delivers verified electrical specs, thermal performance, mechanical dimensions, AEC-Q101 qualification status, and direct replacement guidance for automotive-grade transient suppression design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity enables robust forward conduction during overvoltage events while maintaining tight 18.9–20.9 V breakdown tolerance at 1 mA test current.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow) and supports high-reliability mounting on minimum recommended SMC pad layout. Thermal resistance is characterized at RθJA = 77.5 °C/W and RθJL = 18.3 °C/W, enabling accurate derating above 25 °C ambient per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum reverse stand-off voltage before clamping begins; defines safe operating range for protected circuit. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown voltage range at 1 mA; ensures predictable turn-on under transients. |
| VC @ IPPM | 27.6 V - Clamping voltage at 109 A peak pulse current; limits voltage seen by downstream ICs. |
| PPPM | 3000 W - Peak pulse power handling (10/1000 μs waveform); withstands high-energy automotive load dump surges. |
| TJ max. | 185 °C - Maximum junction temperature; supports operation in engine bay and powertrain environments. |
| IFSM | 200 A - Non-repetitive forward surge current (8.3 ms half-sine); handles inductive switch-off energy. |
| RθJA | 77.5 °C/W - Junction-to-ambient thermal resistance; used to calculate temperature rise under DC power dissipation. |
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 | Forward current entry point during clamping | Connected to protected line (e.g., battery rail); conducts surge current toward ground when reverse-biased beyond VBR. |
| Cathode | Reverse-biased terminal during normal operation | Marked by color band; tied to system ground or low-impedance return path to complete clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process improves long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, body electronics, and ADAS sensor interfaces. |
| MSL Level 1 | Compatible with standard SMT reflow profiles up to 260 °C peak without moisture-induced damage. |
| Low incremental surge resistance | Enables tighter clamping voltage window and reduced overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 5a). |
| High TJ capability | 185 °C max junction temperature allows placement near heat sources such as power MOSFETs or motor drivers. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load dump transients (ISO 16750-2) on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground to clamp surges above 17 V. Use Value: Limits peak voltage to ≤27.6 V at 109 A, protecting downstream PMICs and microcontrollers from destructive overvoltage. |
Use Scenario: Protecting analog front-end inputs of pressure, temperature, or position sensors in factory automation systems. IC Role / Device Role / Timing Role: Fast-response TVS on signal lines to absorb ESD (IEC 61000-4-2) and switching noise from nearby solenoids. Use Value: Sub-1 ns response time and 27.6 V clamping prevent latch-up or gate oxide damage in precision ADC input stages. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, wireless access points) against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary surge clamp on DC input before DC-DC converter stage. Use Value: 3000 W pulse rating absorbs multiple 10/1000 μs surges without degradation, ensuring field reliability. |
Use Scenario: Preventing overvoltage damage to USB-C PD controllers and Type-C port logic during adapter fault conditions. IC Role / Device Role / Timing Role: Secondary-level TVS on regulated 5–20 V output lines after buck converter. Use Value: 17 V VWM aligns with USB PD 3.0 15 V PPS profile; clamps to 27.6 V before downstream FETs exceed VDS rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Lower peak pulse power (400 W), same DO-214AC (SMA) package, VC = 27.7 V at 12.3 A. | Not suitable for automotive load dump; limited to low-energy ESD and inductive switching in consumer electronics. | Select only for cost-sensitive, non-automotive designs where 3000 W surge immunity is not required. |
| SMCJ17A | Same DO-214AB (SMC) package and 3000 W rating, but VBR = 18.9–20.9 V and VC = 27.6 V identical; RoHS-compliant, AEC-Q101 qualified. | Direct functional match; differs only in part numbering convention and packaging suffix (e.g., HM3/9AT vs. -TP). | Valid alternative if 3KASMC17AHE3/9AT is unavailable; verify tape-and-reel code compatibility with SMT line. |
Compared with SMAJ17A and SMCJ17A, the 3KASMC17AHE3/9AT offers identical clamping performance and AEC-Q101 qualification but integrates Vishay's optimized passivation for extended life under thermal cycling-critical for under-hood automotive deployments.
Availability
3KASMC17AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, telecom DC input, and consumer power adapter applications requiring stable component supply and full AEC-Q101 traceability.
Supply support for 3KASMC17AHE3/9AT 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, high-temperature operation, and automotive qualification.
The 3KASMC series was developed specifically for high-energy transient suppression in harsh-environment automotive and industrial systems, combining 185 °C junction capability with AEC-Q101 validation and robust SMC packaging.
FAQ
What is the clamping voltage of the 3KASMC17AHE3/9AT at its rated peak pulse current?
The 3KASMC17AHE3/9AT has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 109 A, measured using a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components remain within safe voltage limits during surge events.
Is the 3KASMC17AHE3/9AT qualified for automotive applications?
Yes, the 3KASMC17AHE3/9AT is AEC-Q101 qualified and rated for operation up to 185 °C junction temperature. It is explicitly intended for automotive use cases including powertrain control units, body electronics, and ADAS sensor protection, with full compliance documented in Vishay's qualification report referenced in datasheet 89962.
What package type does the 3KASMC17AHE3/9AT use, and what are its key mechanical features?
The 3KASMC17AHE3/9AT 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, and it achieves MSL Level 1 per J-STD-020 with a 260 °C peak reflow rating-confirmed in the mechanical drawings on page 4 of datasheet 89962.
How does the 3KASMC17AHE3/9AT differ from the SMAJ17A in terms of surge handling capability?
The 3KASMC17AHE3/9AT delivers 3000 W peak pulse power (10/1000 μs), whereas the SMAJ17A is rated for only 400 W. This 7.5× higher energy absorption makes the 3KASMC17AHE3/9AT suitable for automotive load dump and industrial inductive switching, while the SMAJ17A is limited to low-energy ESD and signal-line protection.
What is the reverse leakage current specification for the 3KASMC17AHE3/9AT at its stand-off voltage?
At VWM = 17 V and TA = 25 °C, the 3KASMC17AHE3/9AT exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage increases to 10 μA-both values confirmed in the Electrical Characteristics table on page 2 of datasheet 89962.
3KASMC17AHE3/9AT 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 109A
- 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)
3KASMC17AHE3/9AT FAQ
1.How can I place an order for 3KASMC17AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC17AHE3/9AT 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 3KASMC17AHE3/9AT reliable?
The price and inventory of 3KASMC17AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC17AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC17AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC17AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC17AHE3/9AT?
3KASMC17AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC17AHE3/9AT 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 3KASMC17AHE3/9AT?
For technical support, including 3KASMC17AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC17AHE3/9AT requirements.
6.How does Aetrix verify that 3KASMC17AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC17AHE3/9AT 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 3KASMC17AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC17AHE3/9AT?
All 3KASMC17AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC17AHE3/9AT, 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 3KASMC17AHE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC17AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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