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Vishay General Semiconductor - Diodes Division SMBJ110AHM3_B/I
- Part No.:
- SMBJ110AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110AHM3_B/I.pdf
- Description:
- 600W,110V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,817
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Product details
Overview
SMBJ110AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 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.
For engineers reviewing the SMBJ110AHM3_B/I datasheet, SMBJ110AHM3_B/I pinout, SMBJ110AHM3_B/I application, or SMBJ110AHM3_B/I equivalent, key selection criteria include clamping performance under 3.4 A surge, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and low incremental surge resistance. Its 10/1000 µs waveform response delivers sub-nanosecond turn-on time and excellent clamping ratio (VC/VBR ≈ 1.45), critical for protecting MOSFET gates and IC I/O lines.
The SMBJ110AHM3_B/I is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its halogen-free, RoHS-compliant construction (HM3 suffix) and AEC-Q101 qualification confirm suitability for automotive and industrial environments requiring long-term reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 122 V / 135 V at 1 mA - Confirmed breakdown range ensures predictable turn-on threshold across production lots. |
| VC @ IPPM | 177 V at 3.4 A - Clamping voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires minimum 5.0 mm × 5.0 mm copper pad per terminal for rated derating. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial settings. |
| IFSM | 100 A - Peak forward surge current rating (8.3 ms half-sine); validates robustness against accidental forward polarity transients. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; anode and cathode terminals are axially oriented along the body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping event. |
| Cathode | Avalanche conduction node / protected line interface | Connected to signal/power line being protected; initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 surge events up to 4 kV (line-earth) without cascaded stages. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body control, and ADAS modules where reliability under thermal cycling and vibration is mandatory. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing and end-of-life processing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns), improving protection margin for 3.3 V and 5 V logic interfaces. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without pre-baking, reducing manufacturing complexity and cost. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground. Use Value: Limits voltage to ≤177 V during 3.4 A surge, preventing damage to LDOs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground near connector entry point. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) within <1 ns while adding <0.5 pF parasitic capacitance to preserve signal integrity. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC converters from lightning-induced surges on RJ45 lines. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC bus feeding isolated DC-DC stage. Use Value: Absorbs 600 W transient energy without degradation, maintaining system uptime during outdoor installation surges. |
Use Scenario: Securing AC-DC adapter primary-side rectifier output against mains overvoltage and switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor to clamp input rail excursions. Use Value: Prevents overvoltage failure of electrolytic capacitors and MOSFETs by clamping to 177 V before reaching 200 V breakdown limit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110AHE3_B/I | Same electrical specs but RoHS-compliant (E3), not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial equipment where halogen content and automotive qualification are not mandated. | Select when cost sensitivity outweighs halogen-free or automotive compliance requirements. |
| SMCJ110A-HM3 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (60 °C/W) and 1500 W PPPM. | Better thermal performance and surge margin for high-power industrial motor drives with >5 A expected surge currents. | Choose when board space allows larger footprint and higher surge immunity is required beyond 600 W. |
Compared with SMBJ110AHM3_B/I, the E3 variant trades halogen-free construction for lower cost in non-automotive use, while the SMCJ110A-HM3 offers superior power handling at the expense of PCB area and thermal design flexibility.
Availability
SMBJ110AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and consumer power adapters requiring stable component supply with guaranteed halogen-free and AEC-Q101-compliant sourcing.
Supply support for SMBJ110AHM3_B/I 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-reliability transient suppression in space-constrained SMT designs, targeting automotive, industrial, and telecom systems where consistent clamping performance and long-term stability under thermal stress are essential.
FAQ
What is the clamping voltage of SMBJ110AHM3_B/I at its rated peak pulse current?
The SMBJ110AHM3_B/I has a maximum clamping voltage (VC) of 177 V at 3.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and it defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ110AHM3_B/I maintains this clamping performance across its qualified operating temperature range.
Is SMBJ110AHM3_B/I suitable for automotive applications?
Yes, SMBJ110AHM3_B/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction-both required for automotive use. Its -55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow rating, and validated surge endurance make it appropriate for engine control units, body electronics, and ADAS power domains. The SMBJ110AHM3_B/I meets automotive reliability standards without derating in typical under-hood thermal environments.
How does the SMBJ110AHM3_B/I differ from the SMBJ110A-E3 variant?
The SMBJ110AHM3_B/I differs from SMBJ110A-E3 in three key ways: it uses halogen-free molding compound (HM3 vs. E3), is AEC-Q101 qualified (whereas E3 is commercial-grade only), and ships in 13" tape-and-reel packaging (I-code) versus E3's standard 7" reel. Electrically, both share identical VWM (110 V), VBR (122–135 V), VC (177 V), and PPPM (600 W) specifications. The SMBJ110AHM3_B/I is selected when automotive compliance and green material requirements are mandatory.
What is the thermal resistance and recommended PCB layout for SMBJ110AHM3_B/I?
The SMBJ110AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated power dissipation and avoid thermal runaway during repetitive surges, designers must implement this pad size and ensure adequate copper area and via stitching to internal ground planes. The SMBJ110AHM3_B/I thermal performance is validated under these conditions per JEDEC standards.
Can SMBJ110AHM3_B/I be used in bidirectional protection circuits?
No, SMBJ110AHM3_B/I is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (VBR, VC, ID) only for reverse-biased operation. For bidirectional protection, Vishay specifies the CA-suffixed variant (e.g., SMBJ110CA). Using SMBJ110AHM3_B/I in bidirectional configurations risks forward conduction during negative transients and failure to clamp in one polarity. Always match the SMBJ110AHM3_B/I to unidirectional signal or power rail protection where polarity is fixed and known.
SMBJ110AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_B/I FAQ
1.How can I place an order for SMBJ110AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110AHM3_B/I 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_B/I reliable?
The price and inventory of SMBJ110AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ110AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110AHM3_B/I?
SMBJ110AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110AHM3_B/I 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_B/I?
For technical support, including SMBJ110AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ110AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ110AHM3_B/I 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_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ110AHM3_B/I?
All SMBJ110AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110AHM3_B/I, 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_B/I part is unused and in its original packaging.
Return procedure for SMBJ110AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110AHM3_B/I Tags
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