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Vishay General Semiconductor - Diodes Division SMBJ110CAHM3_A/H
- Part No.:
- SMBJ110CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110CAHM3_A/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,290
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Product details
Overview
SMBJ110CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 110 V stand-off voltage (VWM), 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ110CAHM3_A/H datasheet, SMBJ110CAHM3_A/H pinout, SMBJ110CAHM3_A/H application, or SMBJ110CAHM3_A/H equivalent, key selection criteria include bidirectional surge clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal performance under repetitive transient stress in automotive and industrial environments.
Technical Context
This device operates as a voltage-clamped crowbar during ESD and lightning-induced surges, with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable VBR (122–135 V) and low incremental surge resistance, enabling fast response (<1 ns) and consistent clamping across temperature.
The SMBJ110CAHM3_A/H is rated for TJ = –55 °C to +150 °C, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation on standard 0.2" × 0.2" copper pads. Its M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 96–110 V DC bus protection. |
| VBR min/max | 122 V / 135 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 177 V at 3.4 A (10/1000 µs) - Clamping voltage limits downstream component stress; critical for safeguarding 150 V-rated MOSFETs or gate drivers. |
| PPPM | 600 W - Peak transient energy handling capacity; supports repeated surge events at 0.01% duty cycle without degradation. |
| IPPM | 3.4 A - Peak surge current capability under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - Maximum junction temperature rating enables use in under-hood automotive modules and high-ambient industrial controls. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering per J-STD-020 MSL Level 1. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | Conducts surge current when voltage at this terminal falls ≥VBR below cathode; symmetric with cathode in bidirectional operation. |
| Cathode | Transient current entry (positive polarity event) | Conducts surge current when voltage at this terminal exceeds anode by ≥VBR; identical clamping behavior to anode side. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns-no external circuit inversion needed. |
| 600 W peak pulse power | Handles IEC 61000-4-5 combination wave surges (e.g., 2 Ω source impedance, 1 kV) without failure, supporting industrial-grade immunity. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications including engine control units and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant (M3) | Meets global environmental regulations and JESD201 Class 2 whisker resistance requirements for long-term reliability in harsh environments. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during transients-critical for protecting sensitive 120 V-rated gate drivers and microcontrollers. |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail inputs to clamp ±150 V spikes within 1 ns. Use Value: Prevents latch-up or gate oxide damage in CAN transceivers and MCU power regulators during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding analog input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on 0–10 V or 4–20 mA signal paths to limit transient excursions to ≤177 V. Use Value: Maintains signal integrity and prevents ADC saturation or op-amp rail-to-rail clipping during 1 kV/500 A surge injection. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced common-mode surges on RJ45 ports. IC Role / Device Role / Timing Role: Bidirectional TVS deployed across differential pairs or between line and chassis ground. Use Value: Limits coupled transients to <180 V, preserving IEEE 802.3af compliance and preventing PHY reset or transformer saturation. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to absorb inductive kickback energy. Use Value: Extends lifespan of MOSFET half-bridges by limiting VDS overshoot to 177 V during 30 A switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CAHE3_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | No difference in surge protection function; differs only in material composition (Br/Cl content). | Select HE3 if halogen content is unrestricted and cost sensitivity favors commercial-grade variant. |
| SMAJ110CAHM3 | Lower 400 W PPPM, higher VC = 196 V at 2.6 A; SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 3 or automotive load dump. | Choose only for space-constrained designs where 400 W rating suffices and thermal margin allows. |
Compared with SMBJ110CAHM3_A/H, the HE3 variant offers identical surge performance with non-halogen-free materials, while the SMAJ110CAHM3 sacrifices 33% peak power and clamping precision for reduced board area-making the SMBJ110CAHM3_A/H optimal for high-reliability, high-energy protection where footprint permits.
Availability
SMBJ110CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom line cards, and consumer appliance motor drives requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBJ110CAHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMBJ series was engineered for high-energy transient suppression in automotive, industrial, and telecom systems-delivering consistent clamping, AEC-Q101 qualification, and halogen-free compliance in compact surface-mount packages.
FAQ
What is the clamping voltage of SMBJ110CAHM3_A/H at its rated peak pulse current?
The SMBJ110CAHM3_A/H has a maximum clamping voltage (VC) of 177 V at 3.4 A peak pulse current (IPPM) under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ110CAHM3_A/H maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C), ensuring predictable protection in demanding environments.
Is SMBJ110CAHM3_A/H qualified for automotive applications?
Yes, SMBJ110CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88392. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge robustness-validating its use in automotive powertrain, body electronics, and ADAS subsystems. The SMBJ110CAHM3_A/H meets all requirements for under-hood and cabin-mounted modules subject to ISO 16750-2 environmental stresses.
How does the bidirectional design of SMBJ110CAHM3_A/H affect its circuit placement?
The SMBJ110CAHM3_A/H has no polarity marking and conducts identically in both directions, allowing direct placement across ungrounded or AC-coupled nodes-such as differential data lines, transformer secondaries, or floating sensor bridges-without orientation constraints. Unlike unidirectional TVS diodes, the SMBJ110CAHM3_A/H eliminates risk of incorrect installation and simplifies layout for symmetric surge paths. Its bidirectional behavior is verified across the full VBR range (122–135 V) in both polarities.
What is the thermal resistance of SMBJ110CAHM3_A/H, and how does it impact PCB layout?
SMBJ110CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive surges, designers must provide adequate copper area and avoid excessive trace length. The SMBJ110CAHM3_A/H's low RθJL enables effective heat transfer to PCB planes via its leads, supporting reliable operation at 5.0 W steady-state dissipation.
Does SMBJ110CAHM3_A/H meet UL 497B recognition requirements?
Yes, SMBJ110CAHM3_A/H carries Underwriters Laboratories recognition under UL 497B (file E136766) for both unidirectional and bidirectional transient protectors. This certification confirms compliance with safety standards for telecommunications and signal-line protection, including dielectric withstand, flammability (UL 94 V-0 molding compound), and surge endurance. The SMBJ110CAHM3_A/H's UL recognition applies directly to its configured part number and supports system-level safety certifications in telecom and industrial equipment.
SMBJ110CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 3.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ110CAHM3_A/H FAQ
1.How can I place an order for SMBJ110CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110CAHM3_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 SMBJ110CAHM3_A/H reliable?
The price and inventory of SMBJ110CAHM3_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 SMBJ110CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ110CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110CAHM3_A/H?
SMBJ110CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110CAHM3_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 SMBJ110CAHM3_A/H?
For technical support, including SMBJ110CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ110CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ110CAHM3_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 SMBJ110CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ110CAHM3_A/H?
All SMBJ110CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110CAHM3_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 SMBJ110CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ110CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110CAHM3_A/H Tags
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