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Vishay General Semiconductor - Diodes Division SMBG14A-M3/5B
- Part No.:
- SMBG14A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14A-M3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,272
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Product details
Overview
SMBG14A-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 sensitive electronics. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMBG14A-M3/5B datasheet, SMBG14A-M3/5B pinout, SMBG14A-M3/5B application, or SMBG14A-M3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), 150 °C max junction temperature, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in series with power or signal lines, conducting only when reverse voltage exceeds VBR to limit transients to ≤23.2 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at 14 V) and fast response time (<1 ns), critical for protecting against ESD and inductive switching spikes.
The SMBG14A-M3/5B is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 moisture sensitivity, and exhibits 20 °C/W typical junction-to-lead thermal resistance - enabling reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 23.2 V at 25.9 A - Limits transient voltage seen by downstream circuitry during 600 W surge |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 μs waveform |
| IFSM | 100 A - Withstands single 8.3 ms half-sine surge without degradation |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial PCBs |
| Leakage ID | ≤1.0 μA at 14 V - Minimizes standby power loss and avoids false triggering |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., 12 V rail); conducts when cathode voltage exceeds anode by >VBR |
| Cathode | Current exit point during clamping | Connected to ground or lower-potential reference; band-marked end defines polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS compliant (M3) | Meets JEDEC JESD201 Class 2 whisker resistance and environmental compliance requirements for industrial and automotive use |
| 600 W peak pulse power (10/1000 μs) | Provides robust immunity against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events |
| Low incremental surge resistance | Enables tighter clamping (23.2 V at 25.9 A) versus competing 14 V TVS devices with higher dynamic impedance |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning or baking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground to shunt surges before reaching DC/DC converters or microcontrollers. Use Value: Clamps transients to ≤23.2 V while sustaining 600 W pulses - preventing latch-up or permanent damage to downstream ASICs rated for 16 V absolute max. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS connected across differential signal pair to suppress ESD and cable-induced noise without distorting millivolt-level signals. Use Value: Sub-μA leakage at 14 V avoids loading high-impedance sensor outputs; fast response preserves signal integrity during 8 kV contact ESD events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and AC/DC wall adapters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after rectifier but before primary controller IC to clamp flyback transformer ringing and external surges. Use Value: 150 °C max junction temperature allows operation near hot transformers; M3 halogen-free construction meets IEC 62368-1 flame-retardant requirements. | Use Scenario: Protecting -48 V DC telecom power distribution boards from accidental short-circuit recovery spikes and induced surges on long feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed between -48 V rail and return, leveraging its 14 V VWM to tolerate normal ripple while clamping >20 V transients. Use Value: 100 A IFSM rating handles high-energy recovery currents; DO-215AA footprint enables dense layout in space-constrained telecom shelves. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG14A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3) | Lacks halogen-free certification required for some automotive Tier 1 programs | Select SMBG14A-M3/5B when halogen-free compliance is mandated by OEM specification |
| SMBJ14A-M3/5B | Higher 600 W rating same, but SMBJ package has larger thermal mass (RθJA = 65 °C/W vs 100 °C/W) and different footprint | Not drop-in compatible - requires PCB redesign due to DO-214AA vs DO-215AA outline | Choose SMBG14A-M3/5B for space-constrained designs needing SMBG's smaller 4.57 mm × 3.94 mm body |
Compared with SMBG14A-E3/5B, the M3 variant adds halogen-free assurance without performance trade-offs; versus SMBJ14A-M3/5B, it trades thermal margin for compactness - making SMBG14A-M3/5B optimal where board area and automotive compliance are prioritized over extreme surge repetition rates.
Availability
SMBG14A-M3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply validation requiring stable component supply and full traceability.
Supply support for SMBG14A-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, efficiency, and application-specific optimization.
The SMBG series was engineered for high-reliability surface-mount transient suppression in automotive and industrial environments - delivering AEC-Q101 qualification, halogen-free compliance, and consistent clamping performance across temperature and surge cycles.
FAQ
What is the clamping voltage of SMBG14A-M3/5B at its rated peak pulse current?
The SMBG14A-M3/5B has a maximum clamping voltage (VC) of 23.2 V at its specified peak pulse current (IPPM) of 25.9 A, measured using a 10/1000 μs waveform. This value is guaranteed across temperature and production lots, ensuring downstream ICs see no more than 23.2 V during surge events - critical for protecting 24 V-tolerant logic and analog components. The SMBG14A-M3/5B achieves this with low dynamic impedance inherent to its glass-passivated junction structure.
Is SMBG14A-M3/5B suitable for automotive applications?
Yes, SMBG14A-M3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments up to +150 °C junction temperature. Its halogen-free (M3) construction, MSL Level 1 reflow compatibility, and validated performance against ISO 7637-2 load dump and ESD stress make it suitable for engine control units, body electronics, and ADAS sensor interfaces. The SMBG14A-M3/5B meets all stress tests defined in the AEC-Q101 standard for transient suppressors.
How does the M3 suffix differ from E3 in SMBG14A-M3/5B?
The M3 suffix indicates halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance, whereas E3 denotes RoHS-compliant but non-halogen-free material. Both share identical electrical specifications and SMBG (DO-215AA) packaging, but SMBG14A-M3/5B satisfies stricter environmental mandates - such as those from European automotive OEMs - that require bromine/chlorine content below 900 ppm. The SMBG14A-M3/5B is fully interchangeable electrically with E3 variants in existing designs.
What is the maximum reverse leakage current for SMBG14A-M3/5B at its stand-off voltage?
The SMBG14A-M3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 14 V stand-off voltage (VWM), tested at 25 °C. This ultra-low leakage prevents unnecessary power drain in always-on systems and avoids false triggering in high-impedance circuits like sensor bias networks. The SMBG14A-M3/5B maintains this specification across its full operating temperature range (-55 °C to +150 °C), verified per Vishay's characterization data.
Can SMBG14A-M3/5B be used in bidirectional configurations?
No, SMBG14A-M3/5B is a unidirectional TVS diode - its cathode band marking and internal structure support conduction only in reverse bias above VBR. For bidirectional protection, Vishay offers the SMBG14CA-M3/5B variant, which provides symmetrical clamping in both polarities. Using SMBG14A-M3/5B in bidirectional applications would leave positive-going transients unprotected. Always verify polarity alignment during PCB layout - the SMBG14A-M3/5B must be oriented with cathode toward the protected circuit's ground reference.
SMBG14A-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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 25.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14A-M3/5B FAQ
1.How can I place an order for SMBG14A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14A-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 SMBG14A-M3/5B reliable?
The price and inventory of SMBG14A-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 SMBG14A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14A-M3/5B?
SMBG14A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14A-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 SMBG14A-M3/5B?
For technical support, including SMBG14A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14A-M3/5B requirements.
6.How does Aetrix verify that SMBG14A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14A-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 SMBG14A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14A-M3/5B?
All SMBG14A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14A-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 SMBG14A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG14A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14A-M3/5B Tags
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