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Vishay General Semiconductor - Diodes Division SMBJ110A-M3/5B
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- Part No.:
- SMBJ110A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110A-M3/5B.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,147
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Product details
Overview
SMBJ110A-M3/5B 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 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, 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 SMBJ110A-M3/5B datasheet, SMBJ110A-M3/5B pinout, SMBJ110A-M3/5B application, or SMBJ110A-M3/5B equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS/halogen-free compliance status, and direct alternatives for overvoltage protection design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The SMBJ110A-M3/5B is rated for 150 °C maximum junction temperature, exhibits 0.107 %/°C temperature coefficient of VBR, and is characterized with 100 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads - requiring careful PCB layout for sustained power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 110 V - maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 122–135 V at 1 mA - guaranteed conduction onset range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 177 V at IPPM = 3.4 A - peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components |
| PPPM (Peak Pulse Power) | 600 W - maximum non-repetitive surge energy absorption capability with 10/1000 µs waveform at TA = 25 °C |
| IPPM (Peak Pulse Current) | 3.4 A - corresponding surge current at VC; used with PCB trace impedance to estimate let-through energy |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on minimal pad layout; dictates derating above 25 °C ambient |
| Leakage (ID) | 1.0 µA max at VWM - negligible standby power loss and minimal impact on high-impedance circuits |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential side (e.g., ground or return path); defines polarity-sensitive placement |
| Cathode | Reverse voltage sensing / Clamping node | Connected to protected line (e.g., 110 V rail); conducts when transient exceeds VBR to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 110 V DC lines without derating |
| 177 V clamping at 3.4 A | Limits voltage stress on 150 V-rated MOSFETs or 200 V capacitors in industrial motor drive DC bus protection |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU RoHS Directive 2011/65/EU Annex II |
| MSL Level 1 (J-STD-020), 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity handling or baking |
| Low 1.0 µA leakage at 110 V | Preserves efficiency in always-on 110 V auxiliary supplies and avoids false triggering in high-impedance sensor bias networks |
Applications
| Industrial Motor Drive DC Bus Protection | Telecom Power Supply Input Stage |
|---|---|
|
Use Scenario: Suppresses switching transients from IGBT gate drivers and regenerative braking feedback on 110 V DC bus rails. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between DC+ and chassis ground to limit overvoltage during fault events. Use Value: Clamps transients to ≤177 V, protecting 200 V-rated electrolytic capacitors and gate driver ICs from cumulative degradation. |
Use Scenario: Guards primary-side input of 110 V telecom rectifier modules against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Standoff-clamp TVS in series with MOV, providing precise voltage limiting ahead of bulk capacitor and PFC controller. Use Value: Delivers repeatable 177 V clamping with <1 ns response, reducing let-through energy versus MOV-only solutions by >40 %. |
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Analog Input Protection |
|
Use Scenario: Protects 110 V nominal battery-fed BCM power inputs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 110 V supply rail, upstream of DC/DC converters and microcontroller LDOs. Use Value: Withstands 100 A IFSM surge (8.3 ms half-sine), meeting ISO 7637-2 Pulse 5a requirements for 24 V systems scaled to 110 V architecture. |
Use Scenario: Shields 4–20 mA analog input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) unidirectional TVS placed across input terminals to prevent op-amp saturation and ADC damage. Use Value: Maintains signal integrity with sub-µA leakage at 110 V common-mode, avoiding offset drift in precision 24-bit sigma-delta ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3) | Acceptable where halogen-free requirement is not mandated (e.g., non-automotive commercial equipment) | Select E3 if cost optimization is prioritized and halogen-free certification is not required by end-customer spec. |
| SMBJ110CA-M3/5B | Bidirectional variant; symmetric VBR (122–135 V), same VC and PPPM | Required for AC-coupled or bipolar signal lines (e.g., RS-485, CAN FD) where polarity reversal occurs | Choose CA version only when protecting bidirectional data lines or AC-powered circuits - not a drop-in replacement for unidirectional use. |
Compared with SMBJ110A-M3/5B, the E3 variant offers identical clamping and thermal performance at lower material cost but lacks halogen-free compliance, while the CA variant enables AC/symmetrical surge protection but requires redesign to accommodate bidirectional operation and absence of polarity marking.
Availability
SMBJ110A-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom rectifier modules, automotive body control units, and PLC analog input stages requiring stable component supply with full halogen-free and RoHS compliance.
Supply support for SMBJ110A-M3/5B 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, power efficiency, and AEC-Q qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where robustness and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ110A-M3/5B under surge conditions?
The SMBJ110A-M3/5B has a maximum clamping voltage (VC) of 177 V at a peak pulse current (IPPM) of 3.4 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMBJ110A-M3/5B maintains this clamping performance across its specified operating temperature range when mounted per recommended pad layout.
Is SMBJ110A-M3/5B suitable for automotive applications?
SMBJ110A-M3/5B is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For automotive use, Vishay specifies the HM3 suffix variants (e.g., SMBJ110A-HM3/5B) with full AEC-Q101 qualification. The SMBJ110A-M3/5B is appropriate for non-safety-critical industrial or telecom applications where AEC-Q101 is not mandated. Always verify qualification status via Vishay's official ordering codes before deployment in automotive ECUs.
How does the M3 suffix differ from E3 in SMBJ110A-M3/5B?
The M3 suffix indicates halogen-free, RoHS-compliant construction, whereas E3 denotes RoHS-compliant but standard brominated flame-retardant molding compound. Both share identical electrical characteristics, thermal ratings, and packaging dimensions. The SMBJ110A-M3/5B meets IPC-1752A material declarations for halogen-free content (<900 ppm Br, <900 ppm Cl), making it suitable for green electronics programs where E3 would not comply.
What is the thermal resistance of SMBJ110A-M3/5B, and how does it affect layout?
The SMBJ110A-M3/5B 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 minimal copper area; increasing pad size or adding thermal vias reduces RθJA. For continuous 5.0 W power dissipation, ambient must be kept below 50 °C - underscoring the need for thermal-aware PCB layout in high-duty-cycle surge environments.
Can SMBJ110A-M3/5B replace SMBJ110CA-M3/5B in a circuit?
No - SMBJ110A-M3/5B is unidirectional and requires correct polarity orientation (cathode toward protected line), while SMBJ110CA-M3/5B is bidirectional with no polarity marking and symmetric clamping in both directions. Substituting SMBJ110A-M3/5B for SMBJ110CA-M3/5B in AC or differential signal paths will result in improper protection or forward conduction failure. The SMBJ110A-M3/5B is only valid where unidirectional DC protection is intended.
SMBJ110A-M3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ110A-M3/5B FAQ
1.How can I place an order for SMBJ110A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110A-M3/5B 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 SMBJ110A-M3/5B reliable?
The price and inventory of SMBJ110A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ110A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110A-M3/5B?
SMBJ110A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110A-M3/5B 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 SMBJ110A-M3/5B?
For technical support, including SMBJ110A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110A-M3/5B requirements.
6.How does Aetrix verify that SMBJ110A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ110A-M3/5B 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 SMBJ110A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ110A-M3/5B?
All SMBJ110A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110A-M3/5B, 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 SMBJ110A-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ110A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110A-M3/5B Tags
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Diodes Incorporated
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