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Vishay General Semiconductor - Diodes Division SMCJ110CAHM3/H
- Part No.:
- SMCJ110CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110CAHM3/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,407
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Product details
Overview
SMCJ110CAHM3/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 1500 W peak pulse power rating, 110 V standoff voltage (VWM), and clamping voltage of 177 V at 8.5 A peak pulse current. It protects sensitive signal lines and power rails in automotive, industrial, and telecom systems against lightning-induced transients and inductive switching spikes.
For engineers reviewing the SMCJ110CAHM3/H datasheet, SMCJ110CAHM3/H pinout, SMCJ110CAHM3/H application, or SMCJ110CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) for reliable operation in constrained PCB layouts.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity sensitivity in AC-coupled or differential signal paths.
Designed for surface-mount assembly on standard 0.31" × 0.31" copper pads, it delivers stable performance across -55 °C to +150 °C junction temperature range and meets J-STD-020 MSL Level 1 reflow requirements with 260 °C peak profile. The glass-passivated junction ensures low leakage (<1.0 μA at VWM) and repeatable breakdown characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 122 V / 135 V at 1 mA - guaranteed breakdown voltage window defining turn-on threshold |
| VC @ IPPM | 177 V at 8.5 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling per 10/1000 μs waveform, enabling robust ESD/Lightning protection |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| RθJA | 75 °C/W - thermal resistance enables predictable derating without forced cooling in compact designs |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Either terminal serves as input/output for bidirectional surge conduction; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-201 Class 2 whisker resistance requirements |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.45) and lower let-through energy during fast transients |
| Very fast response time | Sub-nanosecond avalanche turn-on ensures protection before sensitive MOSFETs or ICs experience overvoltage damage |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting LIN bus nodes and body control module power inputs from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at connector entry point to shunt transients before reaching LDOs and microcontrollers. Use Value: Withstands 1500 W pulses and operates up to +150 °C, meeting ISO 7637-2 Pulse 5a requirements without derating. | Use Scenario: Shielding 4–20 mA current loop transmitters from EFT bursts and field wiring faults in factory automation. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) bidirectional suppressor across analog input terminals to preserve measurement accuracy. Use Value: Clamps to 177 V at 8.5 A while adding <1 pF capacitance, avoiding signal distortion in precision current sensing. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Safeguarding Ethernet PHY front-end and PoE injectors against lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices on differential pairs to maintain signal integrity while providing symmetric surge diversion. Use Value: Matches impedance-critical layout with DO-214AB footprint and enables >10 kV contact ESD immunity per IEC 61000-4-2. | Use Scenario: Adding secondary-level surge protection on USB 2.0 VBUS and D+/D− lines in smart home hubs exposed to ungrounded wall adapters. IC Role / Device Role / Timing Role: Standoff-rated (110 V) suppressor preventing false triggering during normal 5 V operation while clamping 10/1000 μs surges. Use Value: Halogen-free HM3 suffix ensures compliance with EU EcoDesign Directive while maintaining full 1500 W surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110CA | Lower PPPM (400 W), same VWM (110 V), SMA package (smaller footprint, higher RθJA) | Not suitable for 1500 W surge events; limited to low-energy ESD or board-level EFT | Select only when space constraints outweigh power-handling needs and thermal budget allows higher junction rise |
| SMCJ110AHE3/H | Unidirectional variant, same PPPM/package, includes cathode band marking, non-halogen-free | Requires polarity-aware placement; unsuitable for AC or floating differential signals | Choose only for DC-biased rails where polarity is fixed and halogen content is not restricted |
Compared with SMCJ110CAHM3/H, SMAJ110CA offers smaller size but sacrifices 73% peak power handling, while SMCJ110AHE3/H trades bidirectionality and halogen-free compliance for unidirectional simplicity-neither is pin-compatible nor functionally interchangeable without circuit redesign.
Availability
SMCJ110CAHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor signal conditioning, telecom line interface, and consumer USB port protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ110CAHM3/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 AEC-Q101 qualification, thermal robustness, and repeatable clamping performance are mandatory.
FAQ
What does the 'HM3' suffix indicate in SMCJ110CAHM3/H?
The 'HM3' suffix in SMCJ110CAHM3/H denotes halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance and AEC-Q101 qualification. It confirms compliance with automotive reliability standards and environmental regulations, distinguishing it from commercial-grade 'M3' or non-automotive 'E3' variants. This makes SMCJ110CAHM3/H suitable for under-hood and safety-critical applications where material content and long-term stability are strictly controlled.
Is SMCJ110CAHM3/H bidirectional, and how does that affect circuit placement?
Yes, SMCJ110CAHM3/H is a bidirectional TVS diode, meaning it provides identical clamping behavior for positive and negative transients without polarity sensitivity. This eliminates the need for cathode band orientation during placement and allows use across AC-coupled lines, differential pairs, or floating grounds. Unlike unidirectional variants, SMCJ110CAHM3/H requires no polarity alignment-both terminals are functionally identical-simplifying layout and reducing assembly errors in high-volume manufacturing.
What is the maximum clamping voltage of SMCJ110CAHM3/H, and why does it matter?
The maximum clamping voltage (VC) of SMCJ110CAHM3/H is 177 V at 8.5 A peak pulse current (10/1000 μs waveform). This value defines the highest voltage imposed on protected circuitry during a surge event. A lower VC relative to VBR (122–135 V) indicates efficient energy diversion-here, VC/VBR ≈ 1.45-ensuring downstream components like 120 V-rated MOSFETs or isolated gate drivers remain within safe operating limits during standardized surge tests such as IEC 61000-4-5.
Can SMCJ110CAHM3/H replace SMCJ110AHE3/H in an existing design?
No, SMCJ110CAHM3/H cannot directly replace SMCJ110AHE3/H without design review. While both share the same package and standoff voltage, SMCJ110AHE3/H is unidirectional (cathode-marked) and lacks AEC-Q101 qualification and halogen-free certification. Substituting SMCJ110CAHM3/H introduces bidirectional behavior-potentially causing unintended conduction in DC-biased circuits-and may require layout changes to remove polarity-dependent routing. Always verify system-level surge test compliance and thermal performance before substitution.
What PCB pad layout is recommended for optimal thermal performance of SMCJ110CAHM3/H?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for SMCJ110CAHM3/H to achieve rated 1500 W pulse power and RθJA = 75 °C/W. These pads must be thermally connected to internal ground/power planes via ≥4 thermal vias per pad (0.3 mm diameter, filled or plated) to minimize junction temperature rise during repeated surges. Deviating from this layout increases thermal resistance, reduces surge endurance, and risks parametric shift or catastrophic failure under sustained stress conditions.
SMCJ110CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SMCJ110CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110CAHM3/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/H reliable?
The price and inventory of SMCJ110CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMCJ110CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110CAHM3/H?
SMCJ110CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110CAHM3/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/H?
For technical support, including SMCJ110CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110CAHM3/H requirements.
6.How does Aetrix verify that SMCJ110CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ110CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMCJ110CAHM3/H?
All SMCJ110CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMCJ110CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110CAHM3/H Tags
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