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Vishay General Semiconductor - Diodes Division 3KASMC16AHM3_A/I
- Part No.:
- 3KASMC16AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHM3_A/I.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,739
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Product details
Overview
3KASMC16AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) designed for high-reliability overvoltage protection 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, 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 3KASMC16AHM3_A/I datasheet, 3KASMC16AHM3_A/I pinout, 3KASMC16AHM3_A/I application, or 3KASMC16AHM3_A/I equivalent, this page provides verified electrical parameters, DO-214AB package details, AEC-Q101 qualification status, thermal resistance data, and real-world protection use cases - all confirmed from Vishay's official document #89962.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture ensures forward conduction only during reverse-biased transient events, with clamping voltage tightly controlled across its 17.8–19.7 V breakdown range.
Rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), it meets MSL Level 1 moisture sensitivity and supports lead-free reflow up to 260 °C. The device is explicitly AEC-Q101 qualified and RoHS-compliant per Vishay's HM3 suffix designation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.8 V / 19.7 V - Ensures reliable triggering above 16 V stand-off while maintaining margin against false triggering. |
| VC @ IPPM | 26.0 V - Clamps 115 A surge (10/1000 μs) to safe levels for downstream 24 V logic and power ICs. |
| PPPM | 3000 W - Handles high-energy transients from solenoid or relay switching in automotive body electronics. |
| TJ max. | 185 °C - Enables operation in under-hood environments without derating in engine control modules. |
| RθJA | 77.5 °C/W - Defines thermal performance on standard PCB pad layout; requires heatsinking for sustained 6 W dissipation. |
| IFSM | 200 A - Withstands single 8.3 ms inrush surges common in DC motor startup and battery connection events. |
| VWM | 16 V - Matches nominal 24 V system rails with 20 % headroom before breakdown initiation. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; defines clamping path for positive transients on cathode side. |
| Cathode | Protected line input | Connected to supply rail (e.g., 24 V bus); absorbs surge energy into ground via anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| 185 °C junction rating | Supports continuous operation in high-ambient zones such as powertrain ECUs without thermal shutdown. |
| 3000 W peak pulse power | Protects against ISO 7637-2 Pulse 1, 2a, and 5a transients in 24 V vehicle systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during clamping, reducing stress on protected MOSFET gate oxides and logic inputs. |
| MSL Level 1 | Allows unlimited floor life and standard reflow profiles without baking - simplifies SMT manufacturing. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protection of 24 V supply rail against load dump and inductive kickback from fuel injectors and ignition coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps transients to ≤26.0 V, preventing damage to 36 V-rated buck controllers and ensuring ASIL-B compliance. |
Use Scenario: Safeguarding IGBT gate drivers and current sense amplifiers from switching noise in variable-frequency drives. IC Role / Device Role / Timing Role: Parallel-mounted TVS on DC bus near power stage to suppress dV/dt-induced coupling. Use Value: Limits voltage spikes to <26 V within nanoseconds, avoiding false triggering of desaturation detection circuits. |
| Telecom Base Station Power Supply | Commercial HVAC Controller |
Use Scenario: Mitigating lightning-induced surges on -48 V telecom distribution boards. IC Role / Device Role / Timing Role: Primary-level TVS on input bulk capacitor bank, coordinated with upstream GDTs. Use Value: Absorbs 3000 W pulses without degradation, maintaining >100 k-cycle lifetime under repeated surge stress. |
Use Scenario: Protecting microcontroller I/O lines and relay coil suppression circuits in HVAC control panels. IC Role / Device Role / Timing Role: Localized TVS on 24 V auxiliary rail feeding solenoid valves and fan speed controllers. Use Value: Prevents latch-up in 3.3 V MCU peripherals by limiting coupled transients to <26 V at point-of-use. |
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-E3/57T (Vishay) | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range but higher VC (26.0 V → 27.7 V). | Suitable for space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2. | Select when board area is critical and surge energy is ≤400 W - not for AEC-Q101 or high-power industrial use. |
| 1.5KE16A (ON Semiconductor) | Through-hole TO-218 package, 1500 W PPPM, higher VC (25.5 V), no AEC-Q101 qualification, RθJA = 10 °C/W (heatsink-dependent). | Requires mounting hardware and heatsinking; lacks automotive qualification and MSL Level 1 reflow compatibility. | Choose only for legacy through-hole designs where rework tolerance and manual assembly outweigh surface-mount advantages. |
Compared with SMAJ16A-E3/57T and 1.5KE16A, the 3KASMC16AHM3_A/I delivers 7.5× higher surge power in a surface-mount package with automotive qualification, enabling compact, high-reliability protection in next-generation ECU and industrial drive designs without redesigning thermal or mechanical interfaces.
Availability
3KASMC16AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control, industrial motor drives, telecom power systems, and commercial HVAC controllers requiring stable component supply under extended temperature and high-surge conditions.
Supply support for 3KASMC16AHM3_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 diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The 3KASMC series was engineered specifically for high-temperature, high-energy transient suppression in automotive and industrial power systems - delivering AEC-Q101 compliance, 185 °C operation, and 3000 W pulse capability in the DO-214AB footprint.
FAQ
What is the maximum clamping voltage of the 3KASMC16AHM3_A/I under rated surge conditions?
The 3KASMC16AHM3_A/I exhibits a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 115 A (10/1000 μs waveform), as specified in Vishay document #89962, Table on page 2. This value ensures compatibility with 24 V system components rated for ≤30 V absolute maximum input.
Is the 3KASMC16AHM3_A/I qualified for automotive applications?
Yes, the 3KASMC16AHM3_A/I is explicitly AEC-Q101 qualified per Vishay's documentation (page 1, Features section and Ordering Information notes). Its HM3 suffix confirms compliance with automotive reliability testing including temperature cycling, high-temperature reverse bias, and electrostatic discharge requirements.
What does the "_A/I" suffix mean in 3KASMC16AHM3_A/I?
The "_A/I" suffix in 3KASMC16AHM3_A/I indicates the packaging configuration: "I" denotes 13-inch diameter plastic tape and reel with 3500 units per reel, as defined in the Ordering Information table on page 2 of Vishay document #89962. The "A" denotes revision level A of the base HM3 package.
Can the 3KASMC16AHM3_A/I be used in bidirectional configurations?
No, the 3KASMC16AHM3_A/I is unidirectional only, as stated in the Features section (page 1): "Available in uni-directional polarity only." For bidirectional protection, Vishay offers separate part numbers such as the 3KASMC16CA series - the 3KASMC16AHM3_A/I must be oriented with cathode toward the protected line.
What is the thermal resistance from junction to ambient for the 3KASMC16AHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for the 3KASMC16AHM3_A/I is 77.5 °C/W, measured on the minimum recommended pad layout per Vishay document #89962, page 2 (Thermal Characteristics table). This value assumes standard FR-4 PCB with copper pour per manufacturer guidelines.
3KASMC16AHM3_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)
3KASMC16AHM3_A/I FAQ
1.How can I place an order for 3KASMC16AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHM3_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 3KASMC16AHM3_A/I reliable?
The price and inventory of 3KASMC16AHM3_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 3KASMC16AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHM3_A/I?
3KASMC16AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHM3_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 3KASMC16AHM3_A/I?
For technical support, including 3KASMC16AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHM3_A/I requirements.
6.How does Aetrix verify that 3KASMC16AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHM3_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 3KASMC16AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHM3_A/I?
All 3KASMC16AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHM3_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 3KASMC16AHM3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC16AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16AHM3_A/I Tags
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