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Vishay General Semiconductor - Diodes Division 3KASMC17AHE3_A/I
- Part No.:
- 3KASMC17AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC17AHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
3KASMC17AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 3000 W peak pulse power (10/1000 μs), 17 V stand-off voltage (VWM), and 18.9–20.9 V breakdown voltage (VBR) at 1.0 mA test current. It delivers clamping voltage of 27.6 V at 109 A peak surge current and operates up to TJ = 185 °C - designed for automotive-grade overvoltage protection on power rails and signal lines.
For engineers reviewing the 3KASMC17AHE3_A/I datasheet, 3KASMC17AHE3_A/I pinout, 3KASMC17AHE3_A/I application, or 3KASMC17AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, MSL Level 1 rating (260 °C reflow), 185 °C junction capability, low incremental surge resistance, and verified clamping performance under repetitive transient stress per IEC 61000-4-5.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response time (<1 ns), enabling robust suppression of ESD, lightning-induced surges, and inductive switching transients. Its unidirectional polarity and 17 V stand-off voltage make it suitable for DC-biased protection paths where reverse conduction must be blocked until clamping threshold is exceeded.
The device exhibits 77.5 °C/W typical junction-to-ambient thermal resistance and 18.3 °C/W junction-to-leads resistance, supporting reliable operation under sustained power dissipation up to 6.0 W with proper PCB copper area. It meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 18.9 V / 20.9 V at 1.0 mA - guaranteed breakdown onset range; ensures predictable turn-on behavior across temperature and lot variation. |
| VC @ IPPM | 27.6 V at 109 A - clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 3000 W - peak pulse power handling capacity; validates suitability for severe transients like ISO 7637-2 Pulse 5a/b or IEC 61000-4-5 Level 4. |
| TJ max. | 185 °C - maximum junction temperature rating; enables deployment in under-hood automotive environments without derating penalties. |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and matte tin-plated leads. |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with cathode band marking; RoHS-compliant, UL 94 V-0 rated compound; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; completes clamping path when transient exceeds VBR. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or sensor output); color band denotes this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage and breakdown characteristics over 15+ years at 125 °C. |
| High-temperature operation | Rated for continuous use at TJ = 185 °C - eliminates need for thermal derating in engine control units or ADAS modules. |
| Clamping efficiency | Clamps 109 A surge to ≤27.6 V - limits voltage overshoot to <1.6× VWM, protecting 20 V-rated MOSFETs and microcontrollers. |
| Surge robustness | Withstands 200 A non-repetitive forward surge (8.3 ms half-sine) - supports load-dump immunity in 12 V automotive systems. |
| Manufacturing compliance | Meets MSL Level 1 (260 °C peak reflow), JESD201 Class 2 whisker resistance, and AEC-Q101 qualification requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach LDOs or MCUs. Use Value: Withstands 3000 W pulses and maintains clamping below 28 V, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb inductive spikes without affecting signal fidelity. Use Value: Low leakage (<1 μA at 17 V) preserves sensor accuracy; fast response prevents transient coupling into ADC front-end stages. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
|
Use Scenario: Securing 48 V PoE-powered network switches against lightning-induced surges on Ethernet ports. IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC input rail upstream of DC-DC converters. Use Value: 185 °C rating allows placement near hot-running magnetics; 3000 W rating covers worst-case IEC 61000-4-5 Combination Wave events. |
Use Scenario: Overvoltage safeguard on 5 V/9 V/12 V DC input jacks of smart speakers and set-top boxes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at jack entry point to shunt ESD and plug-in surges. Use Value: AEC-Q101 qualification ensures long-term reliability in consumer field deployments; DO-214AB footprint simplifies layout and rework. |
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 PPPM (400 W), same VWM (17 V), DO-214AC (SMA) package, 150 °C TJ max. | Not AEC-Q101 qualified; limited to commercial/industrial use; insufficient for automotive load dump. | Select only for cost-sensitive, non-automotive designs with lower surge exposure. |
| 1.5KE18A | Higher VWM (15.3 V), higher VC (27.7 V), axial leaded DO-201AD package, 175 °C TJ max. | Through-hole mounting requires manual assembly or wave soldering; not suitable for high-density SMT production. | Choose only if legacy board design mandates axial components or thermal mass outweighs SMT advantages. |
Compared with SMAJ17A and 1.5KE18A, the 3KASMC17AHE3_A/I provides superior automotive readiness via AEC-Q101 qualification, higher 185 °C junction rating, and 3000 W surge capacity in a compact DO-214AB package - enabling smaller PCB area, automated assembly, and extended lifetime in harsh environments.
Availability
3KASMC17AHE3_A/I is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, telecom power inputs, and consumer DC jack protection requiring stable component supply and full traceability.
Supply support for 3KASMC17AHE3_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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 3KASMC series belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for AEC-Q101-compliant automotive transient suppression with enhanced thermal stability and surge endurance.
FAQ
What is the clamping voltage of the 3KASMC17AHE3_A/I under a 10/1000 μs surge?
The 3KASMC17AHE3_A/I clamps to a maximum of 27.6 V when subjected to its rated peak pulse current of 109 A using a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 89962) and reflects worst-case performance across temperature and manufacturing variation. The 3KASMC17AHE3_A/I achieves this while maintaining low incremental surge resistance, ensuring consistent protection behavior across repeated transients.
Is the 3KASMC17AHE3_A/I suitable for automotive applications?
Yes, the 3KASMC17AHE3_A/I is AEC-Q101 qualified and rated for TJ = 185 °C, making it fully suitable for under-hood and body-control module applications. It meets critical automotive requirements including high-temperature storage, thermal cycling, and surge immunity per ISO 7637-2. The 3KASMC17AHE3_A/I also complies with MSL Level 1 and JESD201 Class 2 whisker testing - confirming robustness in automotive manufacturing and field environments.
What does the "_A/I" suffix mean in 3KASMC17AHE3_A/I?
The "_A/I" suffix in 3KASMC17AHE3_A/I indicates packaging configuration: "A" denotes the base P/NHM3 variant (RoHS-compliant and AEC-Q101 qualified), and "I" specifies 13-inch diameter plastic tape and reel delivery with 3500 units per reel. This matches Vishay's ordering code convention in Document 89962, where "I" corresponds to the preferred package code for high-volume SMT assembly.
How does the 3KASMC17AHE3_A/I compare to standard SMAJ-series TVS diodes?
The 3KASMC17AHE3_A/I delivers 3000 W peak pulse power - 7.5× higher than the 400 W rating of SMAJ17A - and operates up to 185 °C versus 150 °C for SMAJ devices. It also carries AEC-Q101 qualification, whereas SMAJ17A is commercial-grade. The 3KASMC17AHE3_A/I uses DO-214AB (SMC) packaging, offering greater thermal mass and lower RθJA than DO-214AC (SMA). These differences make the 3KASMC17AHE3_A/I appropriate for demanding automotive and industrial applications where SMAJ17A would fail prematurely.
What is the maximum reverse leakage current of the 3KASMC17AHE3_A/I at its stand-off voltage?
The 3KASMC17AHE3_A/I exhibits a maximum reverse leakage current of 1.0 μA at VWM = 17 V and TA = 25 °C, rising to 10 μA at TJ = 150 °C. This low leakage preserves signal integrity in high-impedance sensor circuits and avoids unnecessary power loss in always-on automotive modules. The 3KASMC17AHE3_A/I maintains this specification across its full operating temperature range, as confirmed in Table 1 of Vishay Document 89962.
3KASMC17AHE3_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):
- 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_A/I FAQ
1.How can I place an order for 3KASMC17AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC17AHE3_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 3KASMC17AHE3_A/I reliable?
The price and inventory of 3KASMC17AHE3_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 3KASMC17AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC17AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC17AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC17AHE3_A/I?
3KASMC17AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC17AHE3_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 3KASMC17AHE3_A/I?
For technical support, including 3KASMC17AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC17AHE3_A/I requirements.
6.How does Aetrix verify that 3KASMC17AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC17AHE3_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 3KASMC17AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC17AHE3_A/I?
All 3KASMC17AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC17AHE3_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 3KASMC17AHE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC17AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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