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Vishay General Semiconductor - Diodes Division SMCJ110CAHM3_A/H
- Part No.:
- SMCJ110CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110CAHM3_A/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,904
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Product details
Overview
SMCJ110CAHM3_A/H 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 110 V standoff voltage, 1500 W peak pulse power rating, and clamping voltage of 177 V at 8.5 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive, industrial, and telecom systems against inductive switching transients and lightning-induced surges.
For engineers reviewing the SMCJ110CAHM3_A/H datasheet, SMCJ110CAHM3_A/H pinout, SMCJ110CAHM3_A/H application, or SMCJ110CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, responding within picoseconds to transient overvoltages. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, eliminating polarity concerns in AC-coupled or differential signal paths.
Designed for mounting on 8.0 mm × 8.0 mm copper pads per terminal, it delivers full 1500 W surge handling only under that thermal condition and derates linearly above 25 °C ambient per Fig. 2. The glass-passivated junction ensures stable breakdown voltage and low leakage (<1 μA at 110 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 122 V / 135 V at 1 mA - Verified breakdown threshold range ensuring reliable turn-on margin |
| VC @ IPPM | 177 V at 8.5 A - Clamped voltage during 10/1000 µs surge, defining protected circuit's maximum stress level |
| PPPM | 1500 W - Peak pulse power handling capacity under standardized 10/1000 µs waveform |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance, critical for thermal design with 6.5 W steady-state dissipation limit |
| TJ max | +150 °C - Maximum allowable junction temperature, supporting operation in under-hood automotive environments |
| Leakage ID | ≤1.0 μA at 110 V - Low reverse leakage preserves signal integrity and minimizes standby power loss |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, J-STD-002 solderable. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | One terminal of symmetrical avalanche junction; conducts during negative voltage excursions beyond VBR |
| Cathode | Transient current entry (positive half-cycle) | Other terminal of symmetrical avalanche junction; conducts during positive voltage excursions beyond VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions enables use on AC lines and differential buses without polarity constraints |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control units, ADAS sensors, and infotainment power rails |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream 12 V or 24 V logic |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime stress conditions |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed upstream of DC/DC converters and LDOs to limit transient energy entering power management ICs. Use Value: Withstands 1500 W surges while clamping to 177 V, preventing damage to downstream regulators rated for ≤36 V input. | Use Scenario: Shielding analog outputs of pressure or temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended sensor output lines exposed to ESD and field wiring transients. Use Value: Symmetrical clamping ensures no signal inversion or DC offset during transient events, preserving measurement accuracy. |
| Telecom Line Interface Protection | Consumer Device USB/Power Port Protection |
Use Scenario: Safeguarding Ethernet PHY interface power pins (e.g., PoE midspan injectors) from induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression element on 48 V bias rails feeding Ethernet magnetics and PHY ICs. Use Value: 110 V standoff allows normal operation under PoE+ voltage swings while clamping >1 kV transients to safe levels. | Use Scenario: Hardening 5 V/9 V/12 V USB-C PD power inputs in smart home hubs against accidental AC mains coupling or ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between input connector and buck converter input capacitor. Use Value: Halogen-free M3 suffix meets global environmental compliance requirements without sacrificing 1500 W surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110CA | Lower PPPM (400 W), same VWM/VC, SMA package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics where 400 W surge margin suffices | Select when board area is limited and surge threat level is lower than automotive/industrial standards |
| SMCJ110AHE3_A/H | Unidirectional version, same VWM/VC/PPPM, RoHS-compliant but not halogen-free | Required where polarity is known and DC-biased circuits need asymmetric protection | Choose for cost-sensitive commercial designs without halogen-free or AEC-Q101 requirements |
Compared with SMCJ110CAHM3_A/H, SMAJ110CA offers reduced surge robustness in a smaller package, while SMCJ110AHE3_A/H provides unidirectional behavior with identical clamping but lacks halogen-free certification and automotive qualification.
Availability
SMCJ110CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom line cards, and consumer USB-PD power inputs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMCJ110CAHM3_A/H 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered for automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What does the 'CA' suffix indicate in SMCJ110CAHM3_A/H?
The 'CA' suffix in SMCJ110CAHM3_A/H denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., SMCJ110A), this device provides symmetrical clamping in both polarities, making it suitable for AC-coupled signals, differential buses, or any application where voltage transients may occur with either polarity. Electrical characteristics-including breakdown voltage, clamping voltage, and peak pulse current-are identical in both directions.
Is SMCJ110CAHM3_A/H qualified for automotive use?
Yes, SMCJ110CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure (HM3 suffix) and documentation. This qualification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and lifetime stress conditions. It is intended for use in engine compartments, ADAS modules, and other automotive subsystems requiring certified surge protection components.
What is the thermal resistance and how does it affect SMCJ110CAHM3_A/H layout?
The typical junction-to-ambient thermal resistance (RθJA) of SMCJ110CAHM3_A/H is 75 °C/W, measured on 8.0 mm × 8.0 mm copper pads per terminal. To achieve full 1500 W surge rating, PCB layout must match this pad size; smaller pads increase thermal impedance and reduce safe surge handling. For continuous operation, the 6.5 W power dissipation limit requires careful thermal management in enclosed or high-ambient environments.
How does the halogen-free designation impact SMCJ110CAHM3_A/H compliance?
The 'HM3' suffix in SMCJ110CAHM3_A/H indicates halogen-free, RoHS-compliant construction per IEC 61249-2-21. This eliminates brominated flame retardants and chlorine-based compounds from the molding compound, meeting stringent environmental regulations in the EU, China, and Japan. It does not affect electrical performance but ensures compliance in green electronics programs and public-sector procurement specifications.
Can SMCJ110CAHM3_A/H replace SMCJ110A in an existing design?
No-SMCJ110CAHM3_A/H cannot directly replace unidirectional SMCJ110A without circuit review. While both share identical VWM, VC, and PPPM, the bidirectional nature of SMCJ110CAHM3_A/H means it conducts during both positive and negative overvoltage events. In DC-biased circuits relying on unidirectional blocking, substitution could cause unintended conduction or increased leakage. Verify polarity requirements and system-level behavior before interchange.
SMCJ110CAHM3_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):
- 8.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ110CAHM3_A/H FAQ
1.How can I place an order for SMCJ110CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110CAHM3_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 SMCJ110CAHM3_A/H reliable?
The price and inventory of SMCJ110CAHM3_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 SMCJ110CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ110CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110CAHM3_A/H?
SMCJ110CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110CAHM3_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 SMCJ110CAHM3_A/H?
For technical support, including SMCJ110CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ110CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ110CAHM3_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 SMCJ110CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ110CAHM3_A/H?
All SMCJ110CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110CAHM3_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 SMCJ110CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ110CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110CAHM3_A/H Tags
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