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Vishay General Semiconductor - Diodes Division 3KASMC16AHM3_B/I
- Part No.:
- 3KASMC16AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHM3_B/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,356
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Product details
Overview
3KASMC16AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in SMC (DO-214AB) package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 185 °C max junction temperature, and designed for automotive-grade overvoltage protection of MOSFETs and sensor signal lines.
For engineers reviewing the 3KASMC16AHM3_B/I datasheet, 3KASMC16AHM3_B/I pinout, 3KASMC16AHM3_B/I application, or 3KASMC16AHM3_B/I equivalent, key selection criteria include clamping voltage (26.0 V at IPPM), unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJL = 18.3 °C/W).
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under high-temperature operation up to TJ = 185 °C and meets MSL Level 1 reflow requirements (260 °C peak). Its low incremental surge resistance and fast response time enable effective suppression of transients from inductive load switching.
The device operates exclusively in unidirectional mode with cathode band marking, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a typical VBR temperature coefficient of +0.081 %/°C - enabling predictable voltage drift across automotive thermal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V at 1.0 mA - precise breakdown threshold for reliable triggering |
| VC at IPPM | 26.0 V - clamping voltage during 3000 W transient, limiting stress on protected ICs |
| PPPM | 3000 W (10/1000 μs) - robust energy absorption for automotive load-dump and ISO 7637-2 pulses |
| TJ max. | +185 °C - enables placement near hot components in engine control units and ADAS modules |
| RθJL | 18.3 °C/W - low junction-to-lead thermal resistance supports high-power transient dissipation without heatsink |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation in circuit |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or clamping | Connected to protected line's ground or low-side reference; defines unidirectional conduction path |
| Cathode | Current exit point during clamping; marked by band | Connected to protected signal/power line; determines polarity and clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage performance (<1.0 μA at VWM) and long-term reliability under thermal cycling |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including powertrain and body electronics per stress test requirements |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global vehicle production and industrial equipment |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Low RθJL = 18.3 °C/W | Minimizes junction temperature rise during repetitive surge events, extending lifetime in cyclic environments |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting gate drivers and microcontrollers in 12 V/24 V engine control units from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between MOSFET gate and source to limit voltage overshoot during switching. Use Value: Clamps to 26.0 V at 3000 W, preventing gate oxide damage while maintaining compatibility with 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding analog front-end inputs of motor current sensors exposed to inductive kickback from H-bridge outputs. IC Role / Device Role / Timing Role: Standoff protection element on signal line between shunt resistor and op-amp input stage. Use Value: Sub-100 ns response time and 1.0 μA leakage at 16 V ensure minimal signal distortion and DC accuracy retention. |
| Automotive ADAS Camera Module | Telecom Base Station Interface |
Use Scenario: Shielding FPD-Link III serializer/deserializer I/O pins from ESD and cable discharge events in rear-view camera systems. IC Role / Device Role / Timing Role: Secondary-level transient suppressor downstream of connector-level protection, co-located with IC. Use Value: 185 °C rating allows placement in compact, thermally constrained camera housings without derating. | Use Scenario: Protecting RS-485 transceiver data lines in outdoor telecom cabinets subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on differential pair, referenced to local ground plane. Use Value: 3000 W capability handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) with margin when used with series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16AHE3_A/H | Same VWM/VBR range but lower PPPM (400 W), smaller SMA package, no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to consumer/industrial board-level protection | Select only for cost-sensitive, non-automotive designs where 3000 W surge immunity is not required |
| SMCJ16AHE3_A/H | Identical SMC package and 3000 W rating, but HE3 suffix only (RoHS-compliant, not halogen-free or AEC-Q101 qualified) | Lacks halogen-free certification and automotive qualification; may not meet OEM material declarations | Choose when AEC-Q101 and halogen-free compliance are not mandated, e.g., industrial control panels |
Compared with SMAJ16AHE3_A/H and SMCJ16AHE3_A/H, the 3KASMC16AHM3_B/I delivers guaranteed AEC-Q101 qualification, halogen-free construction, and identical 3000 W surge capability in the same SMC footprint - making it the sole option meeting full Tier-1 automotive material and reliability requirements.
Availability
3KASMC16AHM3_B/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, ADAS camera modules, and telecom base station interface applications requiring stable component supply, long lifecycle support, and certified compliance documentation.
Supply support for 3KASMC16AHM3_B/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, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The 3KASMCxxA family was engineered specifically for high-energy transient suppression in harsh automotive and industrial environments, combining PAR® technology with extended temperature capability and AEC-Q101 validation.
FAQ
What is the clamping voltage of the 3KASMC16AHM3_B/I at its rated peak pulse current?
The 3KASMC16AHM3_B/I has a maximum clamping voltage (VC) of 26.0 V when subjected to its peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and ensures protected downstream components remain within safe voltage limits during transient events. The 3KASMC16AHM3_B/I maintains this clamping performance across its operational temperature range due to its low thermal resistance and stable VBR temperature coefficient.
Is the 3KASMC16AHM3_B/I qualified for automotive applications?
Yes, the 3KASMC16AHM3_B/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and explicit listing in Vishay's qualified devices documentation. It meets all stress tests required for automotive use, including temperature cycling, humidity bias, and mechanical shock. The 3KASMC16AHM3_B/I is intended for under-hood and chassis-mounted applications where junction temperatures reach up to +185 °C, and its halogen-free, RoHS-compliant construction satisfies OEM material declarations.
What does the "HM3" suffix indicate in 3KASMC16AHM3_B/I?
The "HM3" suffix in 3KASMC16AHM3_B/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It distinguishes this variant from HE3 (RoHS-compliant and AEC-Q101 qualified but not halogen-free) and standard versions. The 3KASMC16AHM3_B/I also meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow specifications, confirming suitability for high-reliability automated assembly processes.
What is the maximum reverse leakage current of the 3KASMC16AHM3_B/I at its stand-off voltage?
The 3KASMC16AHM3_B/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its 16 V stand-off voltage (VWM) and TA = 25 °C. At elevated temperature (TJ = 150 °C), leakage remains ≤5.0 μA, ensuring minimal power loss and signal integrity impact in always-on automotive modules. This low leakage is maintained across the full operating temperature range and supports precision analog sensing applications where quiescent current matters.
How does the thermal resistance of the 3KASMC16AHM3_B/I compare to similar SMC-packaged TVS diodes?
The 3KASMC16AHM3_B/I has a typical junction-to-lead thermal resistance (RθJL) of 18.3 °C/W, which is 15–20% lower than legacy SMC TVS devices like SMAJ/SMCJ series. This improved thermal path enables higher sustained surge handling and reduced junction temperature rise during repetitive transients. For the 3KASMC16AHM3_B/I, this directly translates to longer lifetime in cyclic automotive environments such as start-stop systems and regenerative braking circuits.
3KASMC16AHM3_B/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:
- Active
- 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 (SMC)
3KASMC16AHM3_B/I FAQ
1.How can I place an order for 3KASMC16AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHM3_B/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_B/I reliable?
The price and inventory of 3KASMC16AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHM3_B/I?
3KASMC16AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHM3_B/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_B/I?
For technical support, including 3KASMC16AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHM3_B/I requirements.
6.How does Aetrix verify that 3KASMC16AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHM3_B/I?
All 3KASMC16AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for 3KASMC16AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16AHM3_B/I Tags
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