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Vishay General Semiconductor - Diodes Division 3KASMC14AHE3/57T
- Part No.:
- 3KASMC14AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC14AHE3/57T.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,544
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Product details
Overview
3KASMC14AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 14 V stand-off voltage, 15.6–17.2 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), 129 A peak surge current, and 23.2 V clamping voltage at IPPM - deployed for automotive sensor line protection and MOSFET gate transient suppression.
For engineers reviewing the 3KASMC14AHE3/57T datasheet, 3KASMC14AHE3/57T pinout, 3KASMC14AHE3/57T application, or 3KASMC14AHE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, TJ = 185 °C operation, MSL Level 1 moisture sensitivity, and DO-214AB thermal resistance (RθJA = 77.5 °C/W).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve high-temperature stability up to 185 °C junction temperature and low incremental surge resistance for robust clamping under fast transients. Its unidirectional configuration enables integration into DC-biased signal or power lines where reverse conduction must be blocked.
Designed per ANSI/IEEE C62.35 standards, it delivers 3000 W peak pulse power with 10/1000 μs waveform compliance and meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance requirements - confirming suitability for automotive-grade reflow and long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 15.6 V / 17.2 V at IT = 1 mA - ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 23.2 V - clamping voltage during 129 A surge, limiting downstream device stress |
| PPPM | 3000 W - peak transient energy absorption capability with 10/1000 μs waveform |
| TJ max | 185 °C - enables operation in under-hood automotive environments without derating |
| IR @ VWM | 1.0 μA - ultra-low leakage preserves battery life in always-on sensor circuits |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
DO-214AB (SMC) package with cathode indicated by molded band; leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102, and qualified to JESD201 Class 2 for whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference in unidirectional clamp configuration |
| Cathode | Clamping node / protected line connection | Connected to signal/power line being protected; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use including engine control, ADAS sensors, and body modules |
| Junction passivation | Enhances long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 rating | Enables standard SMT reflow without baking; peak temperature tolerance up to 260 °C |
| Low Rsurge | Minimizes voltage overshoot during fast transients (<1 ns response time implied by design) |
| 185 °C TJ capability | Supports placement near heat sources (e.g., power converters) without thermal derating |
Applications
| Automotive Sensor Protection | DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground to clamp ESD and ISO 7637-2 pulses. Use Value: Limits transient voltage to ≤23.2 V, preventing damage to 3.3 V/5 V interface ICs while maintaining signal integrity via low capacitance. |
Use Scenario: Safeguarding 12 V/24 V automotive power rails feeding microcontrollers, motor drivers, and lighting modules against load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across rail-to-ground to absorb up to 3000 W surges without failure. Use Value: Withstands 129 A peak surge current and maintains clamping below 24 V, preserving downstream regulator input ratings. |
| Industrial Motor Drive I/O | Telecom Line Interface |
Use Scenario: Shielding digital I/O and feedback lines of variable-frequency drives from back-EMF spikes generated by contactor switching and motor commutation. IC Role / Device Role / Timing Role: Unidirectional transient suppressor on encoder, limit switch, or enable signal paths referenced to system ground. Use Value: 1.0 μA leakage at 14 V minimizes false triggering in high-impedance logic inputs; 185 °C rating supports enclosure mounting near heatsinks. |
Use Scenario: Protecting Ethernet PHY interfaces, RS-485 transceivers, and DSL line drivers from lightning-induced surges and AC power cross-talk. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair or single-ended data lines entering building infrastructure equipment. Use Value: Meets IEC 61000-4-5 Level 4 immunity when used with series impedance; DO-214AB footprint allows compact PCB layout near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | Same DO-214AC (SMA) package; lower PPPM (400 W), higher RθJA (~110 °C/W), no AEC-Q101 qualification | Limited to commercial-grade consumer/industrial systems; unsuitable for automotive under-hood deployment | Select only if cost-sensitive non-automotive designs require smaller footprint and lower surge demands |
| SMCJ14A | Same DO-214AB (SMC) package; identical 3000 W PPPM and 14 V VWM, but rated for TJ = 175 °C (not 185 °C) and lacks explicit AEC-Q101 documentation | Acceptable for industrial and some automotive cabin applications, but not validated for full AEC-Q101 stress test profile | Prefer when AEC-Q101 is not mandated and 10 °C junction margin is acceptable |
Compared with SMAJ14A and SMCJ14A, the 3KASMC14AHE3/57T provides verified AEC-Q101 qualification and extended 185 °C junction capability - critical for under-hood automotive reliability - while retaining the same DO-214AB mechanical form factor and 3000 W surge rating.
Availability
3KASMC14AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O, telecom line interface, and DC power rail clamping requiring stable component supply and long-term lifecycle support.
Supply support for 3KASMC14AHE3/57T 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The 3KASMCxxA family was engineered specifically for AEC-Q101-compliant transient suppression in automotive powertrain and chassis systems, emphasizing thermal robustness, surge endurance, and process-controlled parametric consistency.
FAQ
What is the clamping voltage of the 3KASMC14AHE3/57T at its rated peak pulse current?
The 3KASMC14AHE3/57T has a maximum clamping voltage (VC) of 23.2 V when subjected to its peak pulse current (IPPM) of 129 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream ICs see limited overvoltage during transient events. The 3KASMC14AHE3/57T maintains this clamping performance across its specified temperature range up to TJ = 185 °C.
Is the 3KASMC14AHE3/57T qualified for automotive applications?
Yes, the 3KASMC14AHE3/57T is explicitly AEC-Q101 qualified, as confirmed in Vishay document 89962. It undergoes stress testing for high-temperature operation (TJ = 185 °C), thermal cycling, humidity, and mechanical shock - meeting requirements for engine control units, ADAS sensors, and body electronics. The 3KASMC14AHE3/57T carries HM3 suffix indicating RoHS compliance and AEC-Q101 validation.
What does the "HE3/57T" suffix indicate in 3KASMC14AHE3/57T?
The "HE3/57T" suffix denotes packaging and revision: "HE3" indicates the base P/NHM3 variant (RoHS-compliant, AEC-Q101 qualified), and "57T" specifies the preferred package code for 7-inch plastic tape-and-reel delivery with 850 units per reel. This matches Vishay's ordering information table in document 89962. The 3KASMC14AHE3/57T is supplied in DO-214AB (SMC) format with MSL Level 1 rating.
How does the thermal resistance of the 3KASMC14AHE3/57T affect PCB layout?
The 3KASMC14AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout. To maintain safe operation at full 3000 W surge rating, designers must provide adequate copper area and thermal vias - especially for repeated surge events. The 3KASMC14AHE3/57T's RθJL of 18.3 °C/W further emphasizes the need for short, wide traces to leads to avoid localized heating.
Can the 3KASMC14AHE3/57T replace the 3KASMC14AHE3/9AT in a design?
Yes, the 3KASMC14AHE3/57T and 3KASMC14AHE3/9AT share identical electrical and thermal specifications - differing only in packaging: 57T is 7″ tape-and-reel (850 units), while 9AT is 13″ tape-and-reel (3500 units). Both use DO-214AB (SMC) package, HM3 base, and meet AEC-Q101. The 3KASMC14AHE3/57T is fully interchangeable at the board level with no layout or schematic changes required.
3KASMC14AHE3/57T 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129A
- 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)
3KASMC14AHE3/57T FAQ
1.How can I place an order for 3KASMC14AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC14AHE3/57T 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 3KASMC14AHE3/57T reliable?
The price and inventory of 3KASMC14AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC14AHE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC14AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC14AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC14AHE3/57T?
3KASMC14AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC14AHE3/57T 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 3KASMC14AHE3/57T?
For technical support, including 3KASMC14AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC14AHE3/57T requirements.
6.How does Aetrix verify that 3KASMC14AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC14AHE3/57T 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 3KASMC14AHE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC14AHE3/57T?
All 3KASMC14AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC14AHE3/57T, 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 3KASMC14AHE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC14AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC14AHE3/57T Tags
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