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Vishay General Semiconductor - Diodes Division SMC3K110CAHM3_A/H
- Part No.:
- SMC3K110CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K110CAHM3_A/H.pdf
- Description:
- 3KW, 110V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,505
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Product details
Overview
SMC3K110CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for automotive and industrial electronics protection. It features 110 V standoff voltage (VWM), 122–135 V breakdown voltage (VBR), 177 V clamping voltage at 16.9 A (10/1000 μs), 3000 W peak pulse power, and AEC-Q101 qualification - deployed to safeguard MOSFETs and sensor signal lines against ISO 7637-2 and ISO 16750-2 transients.
For engineers reviewing the SMC3K110CAHM3_A datasheet, SMC3K110CAHM3_A pinout, SMC3K110CAHM3_A application, or SMC3K110CAHM3_A equivalent, key selection criteria include clamping performance under 10/1000 μs and 8/20 μs waveforms, bidirectional surge handling up to 130 A (8/20 μs), junction temperature range (–55 °C to +175 °C), and compliance with IEC 61000-4-2 ESD (30 kV contact/air).
Technical Context
This TVS diode operates as a voltage-clamping protector in parallel with sensitive circuit nodes, responding within picoseconds to transient overvoltages induced by inductive switching or load dump events. Its bidirectional architecture enables symmetrical suppression of both positive and negative polarity surges without polarity marking on the SMC package.
It meets automotive-grade reliability requirements per AEC-Q101, supports UL 497B safety recognition (E136766), and delivers low incremental surge resistance for stable clamping across repetitive pulses. Thermal design leverages RthJM = 4.0 °C/W (junction-to-mount) and RthJA = 90 °C/W (junction-to-ambient on FR4), enabling robust operation in high-temperature engine bay or powertrain environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below system nominal voltage (e.g., 12 V/24 V battery rails). |
| VBR (min/max) | 122 V / 135 V at 1 mA - precise breakdown threshold ensures predictable turn-on during transients while avoiding false triggering. |
| VC @ IPPM (10/1000 μs) | 177 V at 16.9 A - clamping voltage limits downstream component stress during standardized automotive surge tests (ISO 7637-2 Pulse 1/2a/3a/3b). |
| PPPM | 3000 W - peak pulse power rating for 10/1000 μs waveform; determines survivability under moderate-duration, high-energy transients. |
| IPPM (8/20 μs) | 130 A - peak current capability for fast-rising lightning-like surges (IEC 61000-4-5); critical for telecom and industrial AC line protection interfaces. |
| TJ max. | +175 °C - extended junction temperature rating supports placement near heat sources (e.g., power converters, motor drivers) without derating. |
| ESD Rating | ±30 kV (HBM, contact & air) - exceeds IEC 61000-4-2 Level 4, enabling direct integration on exposed connectors and sensor inputs. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002/JESD 22-B102, MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Reference terminal for unidirectional devices; not applicable | Bidirectional construction eliminates polarity marking - either terminal serves as anode/cathode depending on transient polarity. |
| Anode (unmarked end) | Reference terminal for unidirectional devices; not applicable | No functional distinction between terminals; symmetric I-V characteristics enable universal placement in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal paths (e.g., CAN bus, sensor bridges) without polarity constraints. |
| 3000 W peak pulse power (10/1000 μs) | Supports sustained suppression of long-duration transients such as ISO 16750-2 Pulse b (load dump) in 12 V systems up to 100 ms. |
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body control modules, and ADAS sensors requiring zero defect reliability over 15+ year lifetimes. |
| UL 497B recognized (E136766) | Permits use in safety-critical secondary-side protection circuits without additional certification effort for end equipment. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during clamping - critical for protecting 120 V-rated gate drivers and high-side switches in 48 V architectures. |
Applications
| Automotive Powertrain Control | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate driver inputs in engine control units subjected to ISO 16750-2 Pulse b (load dump) and ISO 7637-2 Pulse 1 (inductive switch-off). IC Role / Device Role: Parallel-connected transient suppressor placed directly at connector entry point or IC supply rail. Use Value: Limits clamped voltage to ≤177 V during 16.9 A surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic and 100 V MOSFET gates. |
Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil flyback and EFT bursts. IC Role / Device Role: Low-capacitance (<100 pF at 0 V) bidirectional clamp on differential sensor lines (e.g., 4–20 mA, RS-485). Use Value: Maintains signal integrity under 30 kV ESD strikes while delivering <10 ns response time to preserve sub-microsecond timing margins. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports and base station RF module DC feeds against lightning-induced surges per IEC 61000-4-5 (8/20 μs). IC Role / Device Role: Primary-level TVS mounted upstream of DC-DC converters and hot-swap controllers. Use Value: Handles 130 A peak current (8/20 μs) with 230 V clamping, ensuring downstream silicon survives 6 kV surge tests without derating. |
Use Scenario: Suppressing commutation spikes from BLDC motor windings in smart home appliances (e.g., washing machines, HVAC fans) operating on 24 V DC buses. IC Role / Device Role: Clamp placed across H-bridge half-bridge outputs and MCU reset lines. Use Value: Withstands 5000+ repetitive ISO 7637-2 Pulse 3a/3b cycles (150 ns, 50 Ω) while maintaining <1 μA leakage at 110 V standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110CA | Same VWM (110 V), but lower PPPM (400 W), higher VC (187 V @ 13.7 A), SMC package identical. | Rated for commercial/industrial use only; not AEC-Q101 qualified or UL 497B recognized. | Select when cost sensitivity outweighs automotive qualification and higher surge energy demands. |
| ON Semiconductor 1.5KE110CA | Higher VWM (110 V), same bidirectional structure, but through-hole DO-201AE package; 1500 W PPPM, 187 V VC @ 13.7 A. | Not suitable for automated SMT assembly; lacks AEC-Q101, MSL level 1, and halogen-free compliance. | Choose only for legacy through-hole designs where board rework is acceptable and volume production constraints do not apply. |
Compared with SMC3K110CAHM3_A, SMAJ110CA offers lower surge robustness and no automotive qualification, while 1.5KE110CA sacrifices SMT compatibility and thermal performance for legacy footprint support - making SMC3K110CAHM3_A the optimal choice for new AEC-Q101-compliant, high-power-density designs.
Availability
SMC3K110CAHM3_A is available at Aetrix Electronics and suitable for automotive powertrain control, industrial sensor interface protection, telecom DC input stages, and consumer appliance motor drive protection requiring stable component supply across multi-year production cycles.
Supply support for SMC3K110CAHM3_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, rectifiers, and protection devices engineered for harsh-environment operation.
The SMC3KxxCAHM3_A series was developed specifically for AEC-Q101-compliant transient suppression in automotive 12 V/24 V/48 V systems and industrial equipment demanding UL safety recognition and high-energy surge immunity.
FAQ
What is the clamping voltage of SMC3K110CAHM3_A under a 10/1000 μs surge?
The SMC3K110CAHM3_A clamps to 177 V at 16.9 A under a 10/1000 μs waveform, as specified in the Vishay datasheet (Document Number: 98241). This value represents the maximum voltage seen by downstream circuitry during standardized automotive surge testing and is measured at the device terminals with defined test conditions. The clamping performance remains stable across its full operating temperature range (–55 °C to +175 °C).
Is SMC3K110CAHM3_A suitable for automotive applications?
Yes, SMC3K110CAHM3_A is AEC-Q101 qualified and explicitly designed for automotive use, including powertrain, body electronics, and ADAS subsystems. It meets ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b) immunity requirements, supports 175 °C junction operation, and carries UL 497B safety recognition (file E136766) - all confirmed in the official Vishay datasheet revision 09-Jan-2024.
What package does SMC3K110CAHM3_A use, and is it RoHS-compliant?
SMC3K110CAHM3_A uses the SMC (DO-214AB) surface-mount package with matte tin-plated leads, rated MSL level 1 (peak reflow 260 °C), and is halogen-free and RoHS-compliant per the "Base P/NHM3_A" designation in the Vishay datasheet. The molding compound meets UL 94 V-0 flammability standards, and terminals comply with J-STD-002 and JESD 22-B102 solderability requirements.
How does SMC3K110CAHM3_A perform under ESD stress?
SMC3K110CAHM3_A achieves ±30 kV per IEC 61000-4-2 (HBM) in both contact and air discharge modes, as verified in the Vishay datasheet. This performance exceeds Level 4 requirements and enables direct protection of exposed interfaces such as sensor connectors, CAN transceivers, and USB ports without additional external shielding or filtering components.
What is the maximum peak pulse current for SMC3K110CAHM3_A at an 8/20 μs waveform?
The SMC3K110CAHM3_A supports a maximum peak pulse current (IPPM) of 130 A under an 8/20 μs waveform, corresponding to a clamping voltage of 230 V. This rating is validated per IEC 61000-4-5 and ensures reliable suppression of lightning-induced surges in telecom infrastructure, industrial power supplies, and outdoor equipment interfaces.
SMC3K110CAHM3_A/H 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K110CAHM3_A/H FAQ
1.How can I place an order for SMC3K110CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K110CAHM3_A/H 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 SMC3K110CAHM3_A/H reliable?
The price and inventory of SMC3K110CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K110CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC3K110CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K110CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K110CAHM3_A/H?
SMC3K110CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K110CAHM3_A/H 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 SMC3K110CAHM3_A/H?
For technical support, including SMC3K110CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K110CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K110CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K110CAHM3_A/H 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 SMC3K110CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC3K110CAHM3_A/H?
All SMC3K110CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K110CAHM3_A/H, 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 SMC3K110CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMC3K110CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K110CAHM3_A/H Tags
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