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Vishay General Semiconductor - Diodes Division SMBJ110AHM3/H
- Part No.:
- SMBJ110AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110AHM3/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,465
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Product details
Overview
SMBJ110AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 110 V stand-off voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ110AHM3/H datasheet, SMBJ110AHM3/H pinout, SMBJ110AHM3/H application, or SMBJ110AHM3/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status (via HM3 suffix), thermal resistance (RθJA = 100 °C/W), and compliance with UL 497B for surge protection systems.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by transient overvoltage events, leveraging an avalanche breakdown mechanism. Its unidirectional configuration provides forward conduction only during reverse-biased surges, with cathode-band marking indicating polarity. The device is rated for repetitive 0.01% duty cycle pulses and derates linearly above 25 °C ambient per Fig. 2.
Designed for PCB-level surge immunity, SMBJ110AHM3/H meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is halogen-free and RoHS-compliant per Vishay's HM3 suffix designation.
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 IT = 1 mA - guaranteed avalanche onset range under standardized test conditions |
| VC @ IPPM | 177 V at 3.4 A - clamped voltage seen by protected circuit during 10/1000 µs surge event |
| PPPM | 600 W - peak transient energy absorption capability with standard 10/1000 µs waveform |
| ID @ VWM | 1.0 µA - low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - maximum junction temperature enabling operation in demanding industrial environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded epoxy body meeting UL 94 V-0 flammability rating. Cathode identified by band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward-biased faults |
| Cathode | Avalanche clamping terminal | Marked end; connected to higher-potential side; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without degradation |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and consumer electronics manufacturing |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and compatibility with standard SMT reflow profiles up to 260 °C peak |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time) |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from relay and solenoid switching. IC Role / Device Role / Timing Role: Unidirectional clamping element placed across DC bus or signal inputs to limit transient voltage to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining system uptime under repeated 100 V surge events. |
Use Scenario: Surge suppression on LIN bus lines and power supply inputs in door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBAT and ground to clamp transients exceeding 110 V without leakage interference. Use Value: Ensures functional safety compliance per ISO 16750-2 by limiting clamped voltage to ≤177 V during 10/1000 µs pulses. |
| Telecom Power Supplies | Industrial Sensor Signal Conditioning |
Use Scenario: Input-stage protection for AC/DC adapters and PoE injectors subjected to lightning-induced surges on primary-side rectifiers. IC Role / Device Role / Timing Role: Primary-side TVS parallel to bulk capacitor to absorb line-to-ground transients before they reach downstream regulation stages. Use Value: Maintains 110 V working margin above nominal 90–132 VAC input, enabling reliable operation across global mains voltages. |
Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers) against ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) clamping device placed directly at connector entry point to minimize signal path disturbance. Use Value: Preserves measurement accuracy by avoiding DC offset shift caused by high ID, while responding within <1 ns to sub-100 ns transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110AHE3/H | Same electrical specs but RoHS-compliant commercial grade (E3); not AEC-Q101 qualified | Lacks automotive qualification; suitable for non-automotive industrial use where qualification is not mandated | Select SMBJ110AHE3/H for cost-sensitive commercial designs without automotive reliability requirements |
| SMBJ110CAHM3/H | Bidirectional variant with same VWM (110 V), but symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., RS-485, CAN) | Choose SMBJ110CAHM3/H only when bidirectional protection is needed; unidirectional SMBJ110AHM3/H offers lower leakage and tighter VBR tolerance |
Compared with SMBJ110AHE3/H and SMBJ110CAHM3/H, SMBJ110AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and unidirectional low-leakage performance - making it optimal for automotive and high-reliability industrial power rail protection where polarity is fixed and qualification is mandatory.
Availability
SMBJ110AHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMBJ110AHM3/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 optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting design-in across automotive, industrial, and telecom infrastructure where robustness and regulatory compliance are critical.
FAQ
What is the clamping voltage of SMBJ110AHM3/H at its rated peak pulse current?
The SMBJ110AHM3/H has a maximum clamping voltage (VC) of 177 V at its specified peak pulse current (IPPM) of 3.4 A under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ110AHM3/H maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ110AHM3/H qualified for automotive applications?
Yes, SMBJ110AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix in its part number. This qualification confirms successful completion of stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness required for automotive electronic components. The SMBJ110AHM3/H is intended for use in body electronics, powertrain subsystems, and infotainment systems where transient immunity and long-term reliability are essential.
What does the "HM3" suffix signify in SMBJ110AHM3/H?
The "HM3" suffix in SMBJ110AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3) and confirms compliance with automotive reliability standards, material restrictions, and assembly process requirements including MSL Level 1 and lead-free reflow compatibility. The SMBJ110AHM3/H meets JESD 201 Class 2 whisker resistance and UL 497B recognition.
How does SMBJ110AHM3/H differ from bidirectional SMBJ110CAHM3/H?
SMBJ110AHM3/H is unidirectional and features a cathode band marking, while SMBJ110CAHM3/H is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMBJ110AHM3/H exhibits lower reverse leakage (1.0 µA at 110 V) versus the bidirectional version, and its VBR is specified only in reverse. Use SMBJ110AHM3/H for DC rails and polarized signal lines; choose SMBJ110CAHM3/H for AC or differential interfaces like CAN or RS-485.
What is the thermal resistance of SMBJ110AHM3/H, and how does it affect layout?
The SMBJ110AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet Figure 5. To maintain safe junction temperatures under sustained power dissipation, designers must ensure adequate copper area and avoid excessive trace length - especially critical during repetitive surge events where thermal accumulation may occur. The SMBJ110AHM3/H's RθJL of 20 °C/W further supports heat transfer to PCB copper planes.
SMBJ110AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ110AHM3/H FAQ
1.How can I place an order for SMBJ110AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110AHM3/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 SMBJ110AHM3/H reliable?
The price and inventory of SMBJ110AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ110AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110AHM3/H?
SMBJ110AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110AHM3/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 SMBJ110AHM3/H?
For technical support, including SMBJ110AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110AHM3/H requirements.
6.How does Aetrix verify that SMBJ110AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ110AHM3/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 SMBJ110AHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ110AHM3/H?
All SMBJ110AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110AHM3/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 SMBJ110AHM3/H part is unused and in its original packaging.
Return procedure for SMBJ110AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110AHM3/H Tags
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