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Vishay General Semiconductor - Diodes Division 3KASMC16HE3_A/I
- Part No.:
- 3KASMC16HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16HE3_A/I.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,640
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Product details
Overview
3KASMC16HE3_A/I 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_A/I datasheet, 3KASMC16HE3_A/I pinout, 3KASMC16HE3_A/I application, or 3KASMC16HE3_A/I equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, AEC-Q101 qualification, 16 V stand-off voltage, low 1.0 μA leakage at VWM, and verified thermal resistance (RθJA = 77.5 °C/W) for board-level thermal design validation.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation, enabling stable operation at TJ = 185 °C - critical for under-hood automotive electronics. Its unidirectional polarity and 17.8–19.7 V breakdown range (VBR) ensure precise clamping above normal operating voltage while maintaining low leakage.
The device meets MSL Level 1 per J-STD-020 (peak reflow = 260 °C), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing - confirming suitability for automated SMT assembly and long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse working voltage before clamping initiates; sets safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1.0 mA - defines tight breakdown tolerance for predictable clamping onset across temperature and production lot. |
| PPPM | 3000 W (10/1000 μs) - enables suppression of high-energy transients like ISO 7637-2 Pulse 5a without failure. |
| IPPM | 115 A - peak surge current capability at which VC = 26.0 V; determines minimum series impedance required for effective clamping. |
| TJ max. | 185 °C - supports placement near heat sources (e.g., power MOSFETs) without derating loss in surge capacity. |
| RθJA | 77.5 °C/W - quantifies thermal performance on standard PCB pad layout; informs heatsinking requirements for sustained power dissipation. |
| AEC-Q101 | Qualified - validates reliability for automotive electronic control modules per stress test requirements (HTOL, TC, HAST, etc.). |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); RoHS-compliant, halogen-free molding compound (UL 94 V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for unidirectional clamping path | Connected to ground or low-impedance return; completes surge current path during overvoltage events. |
| Cathode | High-side connection point; marked with band | Connected to protected line (e.g., 12 V rail); voltage referenced to anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage (<1.0 μA at VWM) and breakdown voltage consistency over 15+ year automotive life. |
| 185 °C junction rating | Permits direct placement adjacent to power semiconductors in ECU modules without thermal derating penalties. |
| 3000 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 Pulse 5a severity level for 12 V vehicle systems without external snubbers. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly with no moisture sensitivity handling required. |
| AEC-Q101 qualification | Validates robustness against temperature cycling, humidity, and mechanical shock per automotive grade standards. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate drivers from load dump and inductive kickback during solenoid actuation. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground to clamp transients before they reach downstream logic. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining <1.0 μA leakage at nominal 12 V operation. |
Use Scenario: Safeguarding half-bridge MOSFET gates and bootstrap circuits from cross-conduction-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response clamping device shunting surge energy away from sensitive gate oxide layers during switching transitions. Use Value: Limits VDS overshoot to ≤26.0 V at 115 A, preserving MOSFET SOA and reducing need for oversized gate resistors. |
| Telecom Power Supply Input | Consumer Appliance Main Board |
Use Scenario: Suppressing lightning-induced surges on AC/DC adapter input lines feeding telecom base station power modules. IC Role / Device Role / Timing Role: Primary-line TVS mounted at board edge to divert >3 kV/6 kA surge currents before entering DC-DC converters. Use Value: Achieves sub-100 ns response time and clamps below 26.0 V, preventing overvoltage shutdown or capacitor rupture in 24 V input stages. |
Use Scenario: Shielding MCU reset lines and communication buses (e.g., I²C) from ESD and relay bounce in washing machine control boards. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) unidirectional suppressor placed directly at connector entry points. Use Value: Maintains signal integrity with <1.0 μA leakage at 3.3 V logic rails while surviving 8 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Lower PPPM (400 W), higher VC (26.0 V @ 12.9 A), same DO-214AC (SMA) package | Not AEC-Q101 qualified; limited to consumer/industrial use where automotive reliability not mandated | Select when cost sensitivity outweighs surge energy requirement and automotive qualification is unnecessary. |
| SMCJ16A | Same PPPM (3000 W), identical VWM/VBR/VC, but rated only to 175 °C TJ max and not AEC-Q101 qualified | Lacks automotive qualification and extended temperature margin; suitable for industrial controls with lower ambient constraints | Choose if AEC-Q101 is not required and board-level thermal management ensures TJ stays ≤175 °C. |
Compared with SMAJ16A and SMCJ16A, the 3KASMC16HE3_A/I provides unique value through its 185 °C junction rating and full AEC-Q101 qualification - enabling deployment in high-temperature automotive zones where alternatives require derating or fail qualification audits.
Availability
3KASMC16HE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power supplies, and consumer appliance main boards requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for 3KASMC16HE3_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® TVS platform, engineered specifically for high-temperature, high-surge automotive power rail protection - emphasizing AEC-Q101 compliance, 185 °C operation, and robust transient immunity in compact SMC packages.
FAQ
What is the clamping voltage of the 3KASMC16HE3_A/I under maximum surge conditions?
The 3KASMC16HE3_A/I clamps at 26.0 V when subjected to its rated peak pulse current of 115 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed across production lots. The clamping voltage remains stable over temperature due to the device's passivated anisotropic rectifier structure, ensuring consistent protection margins for downstream 16 V-rated components in the 3KASMC16HE3_A/I application circuit.
Is the 3KASMC16HE3_A/I suitable for automotive under-hood applications?
Yes, the 3KASMC16HE3_A/I is AEC-Q101 qualified and rated for 185 °C junction temperature, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its DO-214AB (SMC) package withstands thermal cycling and vibration, and its 3000 W surge capability meets ISO 7637-2 Pulse 5a requirements - all validated per the official 3KASMC16HE3_A/I datasheet revision 05-Mar-13.
What does the "_A/I" suffix indicate in 3KASMC16HE3_A/I?
The "_A/I" suffix in 3KASMC16HE3_A/I denotes the packaging configuration: "I" specifies 13-inch diameter plastic tape and reel with 3500 units per reel, while "A" indicates the base P/NHM3 variant - RoHS-compliant, AEC-Q101 qualified, and meeting JESD 201 Class 2 whisker resistance. This matches the ordering information on page 2 of the 3KASMC16HE3_A/I datasheet (Document Number: 89962).
How does the thermal resistance of the 3KASMC16HE3_A/I affect PCB layout?
The 3KASMC16HE3_A/I has a typical RθJA of 77.5 °C/W on the recommended mounting pad layout. To maintain TJ ≤185 °C at full 6.0 W steady-state dissipation, the PCB must provide adequate copper area and thermal vias beneath the cathode/anode pads. Layout deviations from the documented DO-214AB pad dimensions will increase RθJA, potentially derating surge capability - a key consideration in high-power 3KASMC16HE3_A/I deployments.
Does the 3KASMC16HE3_A/I have bidirectional polarity?
No, the 3KASMC16HE3_A/I is unidirectional only, as explicitly stated in the "FEATURES" section of its datasheet. It conducts only during reverse-biased overvoltage events - i.e., when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional protection, two devices must be used in series opposition, or a dedicated bidirectional TVS (e.g., 3KASMC16HE3_A/I's counterpart in the bidirectional family) must be selected instead.
3KASMC16HE3_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):
- 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_A/I FAQ
1.How can I place an order for 3KASMC16HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16HE3_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 3KASMC16HE3_A/I reliable?
The price and inventory of 3KASMC16HE3_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 3KASMC16HE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC16HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16HE3_A/I?
3KASMC16HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16HE3_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 3KASMC16HE3_A/I?
For technical support, including 3KASMC16HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16HE3_A/I requirements.
6.How does Aetrix verify that 3KASMC16HE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC16HE3_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 3KASMC16HE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC16HE3_A/I?
All 3KASMC16HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16HE3_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 3KASMC16HE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC16HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16HE3_A/I Tags
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