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Vishay General Semiconductor - Diodes Division SMC3K16CAHM3_A/I
- Part No.:
- SMC3K16CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K16CAHM3_A/I.pdf
- Description:
- 3KW, 16V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,590
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Product details
Overview
SMC3K16CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 17.8–19.7 V breakdown voltage, and 26.0 V clamping voltage at 872 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive power systems against ISO 7637-2 and ISO 16750-2 transients.
For engineers reviewing the SMC3K16CAHM3_A datasheet, SMC3K16CAHM3_A pinout, SMC3K16CAHM3_A application, or SMC3K16CAHM3_A equivalent, key selection considerations include its AEC-Q101 qualification, 175 °C max junction temperature, bidirectional clamping behavior, and compliance with IEC 61000-4-2 ESD (30 kV contact/air), making it suitable for automotive-grade transient suppression where reliability under thermal stress and repetitive surge events is critical.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown range (17.8–19.7 V), it avalanches rapidly (<1 ns response) to divert surge current away from downstream circuitry. Its low incremental surge resistance ensures minimal voltage overshoot during high-current transients like ISO 7637-2 Pulse 1 (−150 V) and Pulse 3b (150 V).
The device uses silicon avalanche technology in a planar junction structure, optimized for stable clamping across −55 °C to +175 °C operating range. Its SMC package provides robust thermal dissipation (RthJA = 90 °C/W, RthJM = 4.0 °C/W) and meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supporting automated assembly in high-reliability automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 17.8–19.7 V at 1.0 mA test current - defines precise avalanche initiation threshold for repeatable clamping onset |
| Stand-off Voltage VWM | 16 V - maximum continuous reverse working voltage before leakage exceeds 2.0 μA, ensuring no conduction during normal operation |
| Clamping Voltage VC | 26.0 V at 872 A (10/1000 μs) - limits protected circuit voltage during worst-case surge, enabling safe operation of 24 V-rated components |
| Peak Pulse Power PPPM | 3000 W (10/1000 μs) - sustains high-energy transients such as load dump without failure, validated per ISO 16750-2 Pulse b |
| Junction Temperature Range | −55 °C to +175 °C - supports under-hood automotive environments and industrial control cabinets without derating |
| ESD Withstand | 30 kV per IEC 61000-4-2 (contact/air) - eliminates need for additional ESD protection on sensor or communication lines |
| AEC-Q101 Qualified | Validated for automotive electronics per stress test requirements - enables use in safety-critical body control modules and ADAS sensors |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Polarity not marked - bidirectional operation confirmed by symmetric VBR min/max and identical clamping in both directions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band side) | Transient current sink node | Primary path for surge current during positive transients; connects to protected line (e.g., CAN_H or 12 V rail) |
| Anode | Reference return node | Connects to system ground or low-impedance reference plane; completes shunt path during negative transients (e.g., ISO 7637-2 Pulse 1) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., LIN bus, analog sensor outputs) without polarity concerns |
| 30 kW capability (8/20 μs) | Handles high-current lightning-induced surges per IEC 61000-4-5, extending protection beyond standard automotive pulses |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., <100 ns edges), preserving timing integrity in high-speed interfaces |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating moisture sensitivity handling in production |
| UL 497B recognition (E136766) | Meets safety agency requirements for telecom and industrial equipment without additional certification effort |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump (ISO 16750-2 Pulse b) and inductive switching spikes (ISO 7637-2 Pulse 2a). IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across power input pins of microcontrollers or PMICs. Use Value: Clamps voltage to ≤26.0 V during 872 A surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops, thermocouple inputs) in PLC modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on signal pair, referenced to local ground with low parasitic capacitance (typ. <200 pF at 0 V). Use Value: Limits transient-induced offset errors and prevents ADC saturation during 30 kV ESD events, maintaining measurement accuracy. |
| Automotive CAN/LIN Bus Protection | Telecom DC Power Input Protection |
|
Use Scenario: Guarding CAN_H/CAN_L differential pairs in body control units against coupled transients from adjacent high-power circuits. IC Role / Device Role / Timing Role: Common-mode TVS placed between CAN_H and CAN_L lines, leveraging bidirectional symmetry to suppress differential and common-mode noise. Use Value: Maintains CAN signal integrity by clamping common-mode surges to <26 V while adding <10 pF capacitance per line, avoiding bit-rate degradation at 500 kbps. |
Use Scenario: Securing −48 V DC telecom power feeds against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary shunt protector on rectified DC input, coordinated with upstream MOVs to handle multi-staged surge energy. Use Value: Absorbs 3000 W peak power without thermal runaway, enabling compact design vs. discrete Zener+resistor solutions and meeting GR-1089-CORE immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA | Same VWM (16 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (26.0 V @ 12.3 A); SMA package (smaller footprint, higher RthJA) | Limited to low-energy transients (e.g., board-level ESD only); unsuitable for ISO 7637-2 Pulse 1 or load dump | Select SMC3K16CAHM3_A when protecting 24 V systems requiring >500 A surge current handling and AEC-Q101 qualification. |
| SMCJ16CA | Identical SMC package and 3000 W rating, but non-AEC-Q101 qualified; VBR range 17.8–19.7 V same, VC = 26.0 V @ 872 A matches exactly | Approved for industrial/commercial use only; excluded from automotive OEM BOMs requiring AEC-Q101 documentation | Choose SMC3K16CAHM3_A over SMCK16CA for automotive Tier 1 designs requiring full AEC-Q101 traceability and UL 497B recognition. |
Compared with SMAJ16CA and SMCJ16CA, SMC3K16CAHM3_A uniquely combines AEC-Q101 qualification, 3000 W surge capacity, and UL 497B safety listing in a single SMC package-enabling drop-in compliance for automotive power domain protection without redesigning layout or qualifying alternate components.
Availability
SMC3K16CAHM3_A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power input stages requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for SMC3K16CAHM3_A 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, and optoelectronics for automotive, industrial, and computing markets.
The SMC3KxxCAHM3_A series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for AEC-Q101-compliant automotive transient suppression with enhanced thermal robustness and standardized surge performance across voltage grades.
FAQ
What is the maximum clamping voltage of SMC3K16CAHM3_A under a 10/1000 μs surge?
The SMC3K16CAHM3_A clamps to a maximum of 26.0 V when subjected to an 872 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number 98241, Rev. 09-Jan-2024) and ensures downstream 24 V-rated ICs remain within safe operating voltage margins during surge events.
Is SMC3K16CAHM3_A qualified for automotive applications?
Yes, SMC3K16CAHM3_A is AEC-Q101 qualified and explicitly rated for automotive use. It meets ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b) transient immunity standards, and its construction-including halogen-free molding compound and MSL Level 1 reflow compatibility-supports under-hood deployment in engine control units and body electronics.
What does the "HM3_A" suffix indicate in SMC3K16CAHM3_A?
The "HM3_A" suffix denotes Vishay's high-reliability variant: halogen-free (per IEC 61249-2-21), RoHS-compliant, AEC-Q101 qualified, and passing JESD 201 Class 2 whisker testing. The "A" indicates tape-and-reel packaging per JEDEC standards, and "H" or "I" denotes reel size (7″ or 13″); SMC3K16CAHM3_A/I uses 13″ reels with 3500 units per reel.
How does SMC3K16CAHM3_A compare to standard SMAJ or SMCJ series TVS diodes?
SMC3K16CAHM3_A shares the SMC (DO-214AB) package and 16 V stand-off voltage with SMCJ16CA but adds AEC-Q101 qualification and UL 497B recognition. Versus SMAJ16CA, it delivers 7.5× higher peak pulse power (3000 W vs. 400 W) and handles 71× higher surge current (872 A vs. 12.3 A), making SMC3K16CAHM3_A suitable for demanding automotive and industrial surge environments.
What is the thermal resistance specification for SMC3K16CAHM3_A?
SMC3K16CAHM3_A has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W and junction-to-mount (RthJM) of 4.0 °C/W, measured per JEDEC 51-2A and 51-14 standards on FR4 PCB with standard footprint. These values enable reliable operation up to 175 °C junction temperature during repetitive surge events when mounted on adequate copper area.
SMC3K16CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K16CAHM3_A/I FAQ
1.How can I place an order for SMC3K16CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K16CAHM3_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 SMC3K16CAHM3_A/I reliable?
The price and inventory of SMC3K16CAHM3_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 SMC3K16CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K16CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K16CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K16CAHM3_A/I?
SMC3K16CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K16CAHM3_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 SMC3K16CAHM3_A/I?
For technical support, including SMC3K16CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K16CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K16CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K16CAHM3_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 SMC3K16CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K16CAHM3_A/I?
All SMC3K16CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K16CAHM3_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 SMC3K16CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMC3K16CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K16CAHM3_A/I Tags
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