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Vishay General Semiconductor - Diodes Division 3KASMC16HE3/57T
- Part No.:
- 3KASMC16HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16HE3/57T.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,798
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Product details
Overview
3KASMC16HE3/57T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 26.0 V under 115 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and ICs against inductive switching transients in engine control units and motor drives.
For engineers reviewing the 3KASMC16HE3/57T datasheet, 3KASMC16HE3/57T pinout, 3KASMC16HE3/57T application, or 3KASMC16HE3/57T equivalent, this page provides verified electrical parameters, DO-214AB package layout, AEC-Q101 qualification status, thermal resistance data, and direct alternatives for automotive-grade circuit protection design.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides forward conduction during overvoltage events while maintaining 16 V stand-off voltage and 17.8–19.7 V breakdown range at 1 mA test current.
It meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supports 200 A non-repetitive forward surge (8.3 ms half-sine), and exhibits 77.5 °C/W junction-to-ambient thermal resistance on standard PCB pad layout - critical for thermal management in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V automotive systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients without premature conduction. |
| PPPM | 3000 W (10/1000 μs) - Sustains high-energy surges common in load-dump and ISO 7637-2 Pulse 5a events. |
| VC @ IPPM | 26.0 V at 115 A - Clamping voltage limits downstream device stress during worst-case surge conditions. |
| TJ max. | +185 °C - Enables operation in under-hood environments where ambient temperatures exceed 125 °C. |
| RθJA | 77.5 °C/W - Quantifies thermal performance on minimum recommended pad layout; informs heatsinking requirements. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-214AB (SMC) - Surface-mount plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry during clamping | Connected to protected circuit ground or low-side return path; enables unidirectional surge shunting to GND. |
| Cathode | Reverse-biased terminal during normal operation | Connected to protected line (e.g., battery rail); reverse voltage standoff defines VWM = 16 V. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process improves long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage - eliminates baking requirement. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), enhancing protection fidelity. |
| 185 °C junction capability | Extends usable lifetime in high-temperature zones such as powertrain ECUs and DC-DC converter outputs. |
| RoHS-compliant & halogen-free | Meets JEDEC JS709A and EU Directive 2011/65/EU requirements for environmentally constrained applications. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protection of microcontroller supply rails and gate drivers against load-dump transients (ISO 7637-2 Pulse 5a) during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input. Use Value: Limits transient voltage to ≤26.0 V at 115 A, preventing latch-up or permanent damage to 3.3 V/5 V logic and MOSFET gate oxides. |
Use Scenario: Surge suppression on DC bus lines feeding IGBT modules in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: High-power transient absorber connected across +VDC and GND near power stage. Use Value: Absorbs 3000 W pulses without degradation, maintaining system uptime in factory automation equipment operating at 85 °C ambient. |
| Telecom Base Station Power Supply | Consumer Appliance Main Board |
Use Scenario: Input-stage protection for AC/DC front-end converters subjected to lightning-induced surges on primary-side rectified rails. IC Role / Device Role / Timing Role: Primary-side TVS mounted directly at bulk capacitor terminals. Use Value: Withstands repeated 10/1000 μs surges up to 115 A while maintaining 16 V stand-off for stable upstream regulation. |
Use Scenario: Overvoltage safeguard for BLDC motor controller ICs in washing machines and HVAC blowers during brushless commutation spikes. IC Role / Device Role / Timing Role: Localized clamping device adjacent to motor driver IC power pins. Use Value: Fast response time and low clamping voltage prevent false triggering and ensure compliance with IEC 61000-4-5 Level 3 immunity testing. |
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), same DO-214AC (SMA) package, VC = 26.0 V @ 12.3 A | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select when cost sensitivity outweighs automotive qualification and surge energy requirements are ≤400 W. |
| SMCJ16A | Same DO-214AB (SMC) package, higher PPPM (1500 W), VC = 26.0 V @ 57.7 A, TJ max = 175 °C | Lacks AEC-Q101 qualification and 185 °C rating; used in industrial controls but not under-hood automotive | Choose if AEC-Q101 is not required and 3000 W capability is unnecessary - reduces bill-of-materials cost. |
Compared with SMAJ16A and SMCJ16A, the 3KASMC16HE3/57T uniquely combines AEC-Q101 qualification, 185 °C operation, and 3000 W surge capacity in the DO-214AB footprint - making it the only option for high-reliability automotive power rail protection where thermal margin and pulse energy co-constrain selection.
Availability
3KASMC16HE3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, telecom power supplies, and consumer appliance main boards requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 3KASMC16HE3/57T 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 3KASMC series belongs to Vishay's PAR® TVS platform, engineered specifically for high-temperature, high-surge automotive power systems - emphasizing AEC-Q101 compliance, 185 °C operation, and robustness against repetitive transients.
FAQ
What is the clamping voltage of the 3KASMC16HE3/57T under maximum surge current?
The 3KASMC16HE3/57T has a maximum clamping voltage (VC) of 26.0 V at 115 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components remain within safe voltage limits during high-energy transients. The 3KASMC16HE3/57T maintains this clamping performance across its full operating temperature range up to 185 °C junction temperature.
Is the 3KASMC16HE3/57T qualified for automotive use?
Yes, the 3KASMC16HE3/57T is AEC-Q101 qualified per the Vishay datasheet (Document Number: 89962). It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), confirming suitability for automotive powertrain and chassis applications. The 3KASMC16HE3/57T also supports MSL Level 1 handling and 260 °C reflow, meeting IPC-J-STD-020 requirements for automotive PCB assembly.
What package does the 3KASMC16HE3/57T use, and what are its key mechanical features?
The 3KASMC16HE3/57T 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 flammability rating, and the cathode is marked by a visible color band. The 3KASMC16HE3/57T measures 6.22 mm × 5.59 mm × 2.90 mm and requires the minimum recommended pad layout specified in the Vishay datasheet for optimal thermal and mechanical reliability.
How does the 3KASMC16HE3/57T compare to standard SMAJ or SMCJ series TVS diodes?
The 3KASMC16HE3/57T exceeds standard SMAJ and SMCJ devices in peak pulse power (3000 W vs. 400 W or 1500 W), junction temperature rating (+185 °C vs. +150 °C or +175 °C), and automotive qualification (AEC-Q101 certified). Unlike those families, the 3KASMC16HE3/57T uses passivated anisotropic rectifier technology for improved long-term stability. These attributes make the 3KASMC16HE3/57T uniquely suited for next-generation automotive power systems where thermal margin and surge endurance are critical.
What is the thermal resistance of the 3KASMC16HE3/57T, and how does it affect PCB layout?
The 3KASMC16HE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout per the Vishay datasheet. This value assumes no external heatsink and standard FR-4 PCB construction. To maintain safe junction temperatures under sustained power dissipation, designers must follow the specified copper pad dimensions and thermal vias - deviations increase RθJA and risk exceeding the 185 °C maximum junction limit. The 3KASMC16HE3/57T's RθJL of 18.3 °C/W further emphasizes the importance of low-impedance lead-to-PCB thermal paths.
3KASMC16HE3/57T 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 104A
- 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)
3KASMC16HE3/57T FAQ
1.How can I place an order for 3KASMC16HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16HE3/57T 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 3KASMC16HE3/57T reliable?
The price and inventory of 3KASMC16HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC16HE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC16HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16HE3/57T?
3KASMC16HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16HE3/57T 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 3KASMC16HE3/57T?
For technical support, including 3KASMC16HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16HE3/57T requirements.
6.How does Aetrix verify that 3KASMC16HE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC16HE3/57T 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 3KASMC16HE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC16HE3/57T?
All 3KASMC16HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16HE3/57T, 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 3KASMC16HE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC16HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16HE3/57T Tags
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