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Vishay General Semiconductor - Diodes Division SMBG110A-M3/5B
- Part No.:
- SMBG110A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG110A-M3/5B.pdf
- Description:
- TVS DIODE 110VWM 177VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,375
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Product details
Overview
SMBG110A-M3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails 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, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG110A-M3/5B datasheet, SMBG110A-M3/5B pinout, SMBG110A-M3/5B application, or SMBG110A-M3/5B equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, IPPM derating above 25 °C, unidirectional polarity marking (cathode band), and AEC-Q101 qualification for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5 % typical) and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables rapid energy diversion during transients. Thermal resistance is specified at RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 20 °C/W.
It meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports automated SMT placement, and is halogen-free and RoHS compliant per suffix "M3". Polarity is marked by a cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 122 V / 135 V at 1 mA - Ensures reliable triggering above system nominal voltage with margin |
| VC @ IPPM | 177 V at 3.4 A - Clamped voltage seen by downstream circuit during 10/1000 μs surge |
| PPPM | 600 W - Peak transient power handling capability under standardized surge waveform |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine, unidirectional only) |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | <1.0 μA - Negligible standby power loss and minimal impact on high-impedance circuits |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by molded band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to protected line's ground or low-side reference; forms clamping path with cathode |
| Cathode | Avalanche breakdown terminal / Surge sink node | Marked with band; connected to protected line's positive rail or signal line to clamp overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive OEM production |
| MSL Level 1 (260 °C) | Enables standard lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and chassis ground to limit voltage excursions. Use Value: Clamps to 177 V during 3.4 A surge, staying below 200 V absolute max rating of common automotive PMICs and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used on single-ended sensor output lines referenced to system ground. Use Value: Sub-1 μA leakage at 110 V ensures no loading of high-impedance sensor outputs; fast response preserves signal integrity. |
| Telecom DC Power Feeds | Consumer Device USB Power Inputs |
Use Scenario: Overvoltage suppression on -48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS installed on negative rail to clamp positive-going transients toward ground. Use Value: 100 A IFSM rating supports robustness against repetitive switching surges in central office power distribution. | Use Scenario: Secondary-level surge protection on 5 V USB-C power delivery inputs in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and upstream of USB PD controller. Use Value: 110 V VWM avoids false triggering during normal 5 V operation while clamping ESD and conducted 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 |
|---|---|---|---|
| SMBG110A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free; base P/N-E3 variant | Approved for industrial-grade use but lacks halogen-free certification required by some automotive Tier 1s | Select when halogen-free compliance is not mandated and cost optimization is prioritized |
| SMBG110AHM3/5B | Identical specs plus AEC-Q101 qualification explicitly stated in part number (HM3 suffix) | Qualified for automotive safety-critical modules where full AEC-Q101 traceability is contractually required | Choose for new automotive designs requiring documented AEC-Q101 test reports and lot-level qualification data |
Compared with SMBG110A-M3/5B, the E3 variant trades halogen-free status for broader industrial acceptance, while the HM3 variant adds formal AEC-Q101 documentation overhead without changing electrical behavior - making SMBG110A-M3/5B the optimal balance of automotive readiness, environmental compliance, and supply chain flexibility.
Availability
SMBG110A-M3/5B is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom DC feed applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMBG110A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG series was engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and telecom systems where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBG110A-M3/5B at its rated peak pulse current?
The SMBG110A-M3/5B has a maximum clamping voltage (VC) of 177 V at its rated peak pulse current (IPPM) of 3.4 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring compatibility with downstream ICs' absolute maximum ratings. The SMBG110A-M3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBG110A-M3/5B suitable for automotive applications?
Yes, SMBG110A-M3/5B is AEC-Q101 qualified and constructed with halogen-free, RoHS-compliant materials per the "M3" suffix. It operates from −55 °C to +150 °C, supports MSL Level 1 reflow, and delivers 600 W peak pulse power - meeting requirements for engine control, body electronics, and infotainment power rail protection. The SMBG110A-M3/5B is widely deployed in Tier 1 automotive subsystems where transient immunity and long-term reliability are essential.
How does the SMBG110A-M3/5B differ from bidirectional TVS diodes like SMBG110CA?
The SMBG110A-M3/5B is unidirectional and features polarity marking (cathode band), allowing it to conduct only in reverse avalanche mode - ideal for DC rail protection. In contrast, SMBG110CA is bidirectional, symmetric in both directions, and unmarked. While both share identical VWM, VBR, and VC values, the SMBG110A-M3/5B cannot replace SMBG110CA in AC-coupled or floating signal paths without circuit redesign. The SMBG110A-M3/5B is optimized for grounded-system DC protection.
What is the thermal resistance of SMBG110A-M3/5B, and how does it affect layout design?
The SMBG110A-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, and RθJL = 20 °C/W junction-to-lead. To maintain safe operation under repeated surges, PCB layout must provide adequate copper area and thermal vias. Derating curves in the SMBG110A-M3/5B datasheet show power capability drops above 25 °C ambient - confirming that thermal design directly impacts surge endurance.
Can SMBG110A-M3/5B be used in place of SMBG100A-M3/5B or SMBG120A-M3/5B?
No - SMBG110A-M3/5B is not a direct substitute for SMBG100A-M3/5B or SMBG120A-M3/5B due to differing standoff voltages (100 V vs. 110 V vs. 120 V) and corresponding clamping profiles. Selecting a different VWM alters the margin between normal operating voltage and clamping onset, risking either nuisance tripping or insufficient protection. Each SMBG110A-M3/5B must be selected based on exact system voltage tolerances and transient threat levels defined in standards like ISO 7637-2.
SMBG110A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG110A-M3/5B FAQ
1.How can I place an order for SMBG110A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG110A-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 SMBG110A-M3/5B reliable?
The price and inventory of SMBG110A-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 SMBG110A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG110A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG110A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG110A-M3/5B?
SMBG110A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG110A-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 SMBG110A-M3/5B?
For technical support, including SMBG110A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG110A-M3/5B requirements.
6.How does Aetrix verify that SMBG110A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG110A-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 SMBG110A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG110A-M3/5B?
All SMBG110A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG110A-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 SMBG110A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG110A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG110A-M3/5B Tags
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