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Vishay General Semiconductor - Diodes Division 3KASMC14AHE3_B/H
- Part No.:
- 3KASMC14AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC14AHE3_B/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
3KASMC14AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in SMC (DO-214AB) 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), 23.2 V clamping voltage at 129 A, and 185 °C maximum junction temperature - deployed for automotive ECU and sensor line protection against inductive switching transients.
For engineers reviewing the 3KASMC14AHE3_B/H datasheet, 3KASMC14AHE3_B/H pinout, 3KASMC14AHE3_B/H application, or 3KASMC14AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 185 °C thermal capability, SMC package mechanical compatibility, and clamping performance under 10/1000 μs surge conditions.
Technical Context
This device uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature operation up to TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its unidirectional architecture provides low incremental surge resistance and fast response time for transient suppression on DC power rails and signal lines.
The 3KASMC14AHE3_B/H delivers 23.2 V clamping voltage at 129 A IPPM with 1.0 μA max reverse leakage at 14 V VWM and exhibits +0.078 %/°C temperature coefficient of VBR - enabling predictable voltage threshold behavior across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/typ/max) | 15.6 / 16.4 / 17.2 V at 1 mA - defines precise breakdown threshold for design margining |
| VC @ IPPM | 23.2 V at 129 A - clamping voltage during 3000 W 10/1000 μs surge, limiting downstream stress |
| PPPM | 3000 W - peak pulse power handling capacity under standardized transient waveform |
| TJ max. | +185 °C - enables use in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects only against positive-going transients relative to cathode |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.11 mm x 6.60 mm footprint |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0; matte tin-plated leads solderable per J-STD-002; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground reference during overvoltage event |
| Anode | Reference return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation optimized | Reduces parameter drift and leakage under high-temperature bias stress (TJ = 185 °C) |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns (260 °C peak) |
| Low clamping ratio (VC/VBR) | 1.41 typical - tight voltage control minimizes overvoltage exposure to protected ICs |
| High IFSM (200 A) | Withstands repetitive 8.3 ms half-sine surges common in motor drive and relay coil snubbing |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND to clamp transients before they reach sensitive logic. Use Value: 23.2 V clamping ensures MCU supply remains below absolute maximum ratings during 3000 W surges. |
Use Scenario: Shields gate drivers and current sense amplifiers from flyback spikes generated by IGBT/MOSFET switching in variable frequency drives. IC Role / Device Role / Timing Role: Fast-response TVS connected across DC bus or gate-source nodes to suppress nanosecond-scale voltage overshoot. Use Value: 129 A IPPM rating handles high di/dt events while maintaining sub-25 V clamping to prevent gate oxide rupture. |
| Automotive Cabin Sensor Module | Telecom Power Supply Input Stage |
|
Use Scenario: Safeguards LIN bus transceivers and MEMS sensor power inputs against ESD and cable discharge events in HVAC and seat control modules. IC Role / Device Role / Timing Role: Unidirectional TVS on 5 V or 3.3 V rail with cathode to rail and anode to ground. Use Value: 1.0 μA leakage at 14 V VWM preserves low-power sleep mode integrity in battery-operated nodes. |
Use Scenario: Suppresses lightning-induced surges and AC line transients entering telecom power supplies via primary-side input filters. IC Role / Device Role / Timing Role: Primary-side TVS mounted across bridge rectifier output or bulk capacitor terminals. Use Value: 185 °C TJ rating supports reliable operation in sealed, convection-limited telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/5AT | Lower PPPM (400 W), SMA package (smaller thermal mass), 21.2 V VC @ 19.9 A | Not AEC-Q101 qualified; limited to consumer/industrial use below 150 °C | Select when cost and board space constrain requirements and automotive qualification is unnecessary |
| 1.5KE14A | Through-hole DO-201 package, higher VF (3.5 V), same VWM/VBR but lower thermal robustness (TJ = 175 °C) | Lacks MSL Level 1 and AEC-Q101 compliance; unsuitable for automated SMT lines | Choose only for legacy through-hole designs where rework tolerance and manual assembly are acceptable |
Compared with SMAJ14A-E3/5AT and 1.5KE14A, the 3KASMC14AHE3_B/H uniquely combines AEC-Q101 qualification, 185 °C operation, 3000 W surge capacity, and SMC surface-mount compatibility - making it the sole option for high-reliability automotive SMT deployments requiring full transient immunity.
Availability
3KASMC14AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive snubbing, cabin sensor module hardening, and telecom power input surge suppression requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 3KASMC14AHE3_B/H 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, MOSFETs, and optoelectronics with emphasis on reliability and high-temperature performance.
The 3KASMC14AHE3_B/H belongs to Vishay's PAR® Transient Voltage Suppressor family, engineered specifically for automotive and industrial applications demanding AEC-Q101 qualification, 185 °C operation, and robust 3000 W surge handling in compact SMC packages.
FAQ
What is the clamping voltage of the 3KASMC14AHE3_B/H under maximum surge conditions?
The 3KASMC14AHE3_B/H has a maximum clamping voltage (VC) of 23.2 V at 129 A peak pulse current (IPPM), measured using the standard 10/1000 μs waveform. This value is guaranteed per the datasheet's electrical characteristics table and reflects the device's ability to limit transient voltage across protected circuitry during worst-case surge events. The 3KASMC14AHE3_B/H maintains this clamping performance consistently across its qualified temperature range.
Is the 3KASMC14AHE3_B/H AEC-Q101 qualified?
Yes, the 3KASMC14AHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating suitability for automotive electronic control units and sensor modules. The 3KASMC14AHE3_B/H carries full documentation supporting its automotive-grade reliability claims.
What package type does the 3KASMC14AHE3_B/H use, and what are its key mechanical features?
The 3KASMC14AHE3_B/H uses the SMC (DO-214AB) surface-mount package, measuring 7.11 mm × 6.60 mm with a 3.20 mm minimum cathode-to-anode length. It features UL 94 V-0 compliant molding compound, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 rating for lead-free reflow up to 260 °C. The cathode is marked by a visible color band, and the 3KASMC14AHE3_B/H is supplied in 7-inch tape-and-reel format (850 units per reel).
How does the 3KASMC14AHE3_B/H perform at elevated junction temperatures?
The 3KASMC14AHE3_B/H is rated for continuous operation up to TJ = +185 °C, with electrical parameters derated above TA = 25 °C per Figure 2 in the datasheet. Its VBR exhibits a +0.078 %/°C temperature coefficient, enabling predictable threshold shift across temperature. The 3KASMC14AHE3_B/H maintains full 3000 W surge capability at TJ ≤ 125 °C and retains functional clamping performance up to its absolute maximum rating, supporting under-hood automotive deployment.
What is the reverse leakage current specification for the 3KASMC14AHE3_B/H at rated stand-off voltage?
The 3KASMC14AHE3_B/H specifies a maximum reverse leakage current (IR) of 1.0 μA at its 14 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperature (TJ = 150 °C), leakage increases to a maximum of 10 μA - still well within safe margins for low-power sensor and communication circuits. This low leakage ensures minimal impact on standby power consumption in battery-powered automotive modules using the 3KASMC14AHE3_B/H.
3KASMC14AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 (SMC)
3KASMC14AHE3_B/H FAQ
1.How can I place an order for 3KASMC14AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC14AHE3_B/H 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_B/H reliable?
The price and inventory of 3KASMC14AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC14AHE3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC14AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC14AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC14AHE3_B/H?
3KASMC14AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC14AHE3_B/H 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_B/H?
For technical support, including 3KASMC14AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC14AHE3_B/H requirements.
6.How does Aetrix verify that 3KASMC14AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC14AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC14AHE3_B/H?
All 3KASMC14AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC14AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for 3KASMC14AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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