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Vishay General Semiconductor - Diodes Division 3KASMC16AHE3/9AT
- Part No.:
- 3KASMC16AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHE3/9AT.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,254
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Product details
Overview
3KASMC16AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) in DO-214AB (SMC) package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 115 A peak surge current (IPPM), and 26.0 V clamping voltage (VC) - designed for automotive-grade overvoltage protection of MOSFETs, sensor signal lines, and IC power rails.
For engineers reviewing the 3KASMC16AHE3/9AT datasheet, 3KASMC16AHE3/9AT pinout, 3KASMC16AHE3/9AT application, or 3KASMC16AHE3/9AT equivalent, this part delivers AEC-Q101 qualification, TJ = 185 °C operation, MSL Level 1 reliability, and low incremental surge resistance for high-reliability transient suppression in automotive and industrial environments.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable clamping under repetitive transients and high-temperature operation up to 185 °C junction temperature. Its unidirectional polarity and 16 V stand-off voltage make it suitable for DC-biased rail protection where reverse conduction must be blocked.
The device meets J-STD-020 MSL Level 1 with 260 °C reflow peak and exhibits 18.3 °C/W junction-to-lead thermal resistance, enabling effective heat dissipation in compact SMC layouts. Clamping occurs within nanoseconds, with VF = 3.5 V at 100 A forward surge, supporting robust protection against inductive switching spikes and ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 1.0 mA - precise breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 26.0 V at 115 A (10/1000 μs) - clamping voltage limits downstream component stress during worst-case surge conditions. |
| PPPM | 3000 W - peak pulse power handling capability enables protection against high-energy transients like load dump or ISO 7637-2 pulses. |
| TJ max. | 185 °C - extended junction temperature rating supports under-hood automotive applications without derating. |
| AEC-Q101 | Qualified - certified for automotive electronics 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
DO-214AB (SMC) package with cathode-indicating band; two-terminal device with anode and cathode leads. Mounting requires minimum pad layout per Vishay specification (0.126″ × 0.060″ pads, 0.185″ max center-to-center).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to ground or low-side reference; forms return path during transient clamp event. |
| Cathode | Current exit terminal during clamping; marked by color band | Connected to protected line (e.g., 12 V rail or sensor output); defines polarity-sensitive protection direction. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage performance (<1 μA at VWM) and long-term reliability under thermal cycling and humidity. |
| 185 °C junction temperature rating | Supports operation in engine control units, ADAS modules, and other high-ambient-temperature automotive locations. |
| 3000 W peak pulse power (10/1000 μs) | Withstands severe transients such as ISO 16750-2 load dump pulses without degradation or failure. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive downstream ICs. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
Applications
| Automotive Power Rail Protection | Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 16 V. Use Value: Limits rail voltage to ≤26.0 V during 3000 W transients, preventing damage to microcontrollers and power management ICs. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground to suppress sub-100 ns transients. Use Value: Maintains signal integrity with <1 μA leakage at 16 V and fast response time, avoiding false triggering or offset drift. |
| MOSFET Gate/Drain Protection | Industrial Motor Drive Control |
Use Scenario: Safeguarding N-channel MOSFETs in half-bridge inverters from inductive kickback during switching. IC Role / Device Role / Timing Role: TVS placed across drain-source or gate-source to absorb stored inductive energy. Use Value: Clamps voltage spikes to 26.0 V before MOSFET avalanche limit is exceeded, extending device lifetime. |
Use Scenario: Protecting PLC I/O modules and servo drive logic inputs from field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS on 24 V DC input lines to suppress surges induced by relay coil de-energization. Use Value: Withstands repeated 115 A surges while maintaining <1 μA leakage, ensuring long-term functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Lower PPPM (400 W), smaller SMA package, 200 °C TJ rating, same VWM/VBR range | Not AEC-Q101 qualified; suited for non-automotive consumer/industrial use only | Select when cost and board space are critical and automotive qualification is not required. |
| SMCJ16A | Same DO-214AB package, identical VWM/VBR/VC specs, but rated for 1500 W PPPM (not 3000 W) | Lacks 3000 W surge capacity needed for ISO 7637-2 load dump compliance | Choose only for lower-energy transient environments where full 3KASMC16AHE3/9AT surge margin is unnecessary. |
Compared with SMAJ16A and SMCJ16A, the 3KASMC16AHE3/9AT provides triple the peak pulse power (3000 W vs. 400 W/1500 W), AEC-Q101 certification, and 185 °C operation - making it uniquely suitable for demanding automotive power rail protection where sustained surge energy and high-temperature reliability are mandatory.
Availability
3KASMC16AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor control systems, and sensor interface protection requiring stable component supply and long-term lifecycle support.
Supply support for 3KASMC16AHE3/9AT 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, power efficiency, and automotive-grade qualification.
The 3KASMC series belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive and industrial environments where 3000 W surge immunity and 185 °C operation are essential.
FAQ
What is the clamping voltage of the 3KASMC16AHE3/9AT under peak surge conditions?
The 3KASMC16AHE3/9AT has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated 115 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and ensures downstream components remain below their absolute maximum voltage ratings during transient events. The 3KASMC16AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the 3KASMC16AHE3/9AT qualified for automotive applications?
Yes, the 3KASMC16AHE3/9AT is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). It is rated for TJ = 185 °C and meets MSL Level 1 per J-STD-020 - confirming suitability for under-hood and powertrain applications. The 3KASMC16AHE3/9AT is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What does the 'HE3/9AT' suffix indicate in 3KASMC16AHE3/9AT?
The 'HE3/9AT' suffix denotes the packaging configuration: 'HE3' identifies the base P/NHM3 variant (RoHS-compliant, AEC-Q101 qualified), and '/9AT' specifies 13-inch diameter plastic tape-and-reel delivery with 3500 units per reel. This matches Vishay's ordering code convention shown in Document 89962, where '9AT' corresponds to the preferred package code for high-volume SMT assembly.
How does the thermal performance of the 3KASMC16AHE3/9AT compare to standard SMC TVS diodes?
The 3KASMC16AHE3/9AT features a typical junction-to-lead thermal resistance (RθJL) of 18.3 °C/W, significantly lower than many legacy SMC TVS devices (~25–30 °C/W), enabling better heat transfer to PCB copper. Its RθJA is 77.5 °C/W on minimum recommended pads - optimized for high-power dissipation without external heatsinking. This thermal profile directly supports the 3KASMC16AHE3/9AT's 3000 W rating and 185 °C operation.
Can the 3KASMC16AHE3/9AT replace older 16 V TVS diodes like P6SMB16A in existing designs?
The 3KASMC16AHE3/9AT is not a direct drop-in replacement for P6SMB16A due to differences in package (DO-214AB vs. DO-214AA), power rating (3000 W vs. 600 W), and thermal characteristics. While both share 16 V VWM, the 3KASMC16AHE3/9AT requires updated layout for its larger SMC footprint and delivers three times the surge capacity. Redesign verification is required before substituting the 3KASMC16AHE3/9AT into legacy P6SMB16A-based circuits.
3KASMC16AHE3/9AT 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115A
- 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)
3KASMC16AHE3/9AT FAQ
1.How can I place an order for 3KASMC16AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHE3/9AT 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 3KASMC16AHE3/9AT reliable?
The price and inventory of 3KASMC16AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC16AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHE3/9AT?
3KASMC16AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHE3/9AT 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 3KASMC16AHE3/9AT?
For technical support, including 3KASMC16AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHE3/9AT requirements.
6.How does Aetrix verify that 3KASMC16AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHE3/9AT 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 3KASMC16AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHE3/9AT?
All 3KASMC16AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHE3/9AT, 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 3KASMC16AHE3/9AT part is unused and in its original packaging.
Return procedure for 3KASMC16AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16AHE3/9AT Tags
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