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Vishay General Semiconductor - Diodes Division SMBG14A-E3/5B
- Part No.:
- SMBG14A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14A-E3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,597
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Product details
Overview
SMBG14A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR at 1 mA), and 600 W peak pulse power (10/1000 µs). It clamps transients to ≤23.2 V at 25.9 A peak surge current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMBG14A-E3/5B datasheet, SMBG14A-E3/5B pinout, SMBG14A-E3/5B application, or SMBG14A-E3/5B equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at 14 V, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, responding within picoseconds to voltage spikes exceeding its VWM. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling consistent clamping performance under repetitive 0.01% duty-cycle surges.
The SMBG14A-E3/5B is designed for unidirectional suppression only, with cathode marked by a band; it does not support bidirectional operation. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W are specified for mounting on standardized 0.2" × 0.2" copper pads per JEDEC standards.
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 reliable turn-on above system nominal voltage with margin |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W transient, limiting stress on downstream ICs |
| IPPM | 25.9 A - Peak surge current capability with 10/1000 µs waveform, derated above 25 °C |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-power industrial enclosures |
| Package | SMBG (DO-215AA) - Low-profile SMT footprint (6.48 mm × 3.94 mm × 2.16 mm) compatible with IPC-7351B |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leads, matte tin-plated, RoHS-compliant (E3 suffix), MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., CAN_H, LIN, sensor supply); conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability across temperature and life |
| Low profile SMBG package | Enables high-density PCB layouts and compatibility with automated pick-and-place systems |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking preconditioning |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs, body control modules, and lighting drivers from load dump and inductive switching transients. IC Role / Device Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going spikes up to 120 V. Use Value: Limits clamped voltage to 23.2 V, preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure, temperature, or position sensors connected to PLC I/O modules. IC Role / Device Role: Parallel-connected TVS on 4–20 mA or 0–10 V signal lines to absorb field-induced surges. Use Value: 1.0 µA leakage avoids loading precision sensor outputs; 25.9 A surge capacity handles 2 kV EFT bursts. |
| Automotive LIN Bus Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding LIN transceivers in door modules, seat controls, and HVAC actuators from cable discharge events. IC Role / Device Role: Unidirectional clamp on LIN bus line referenced to vehicle ground, with cathode tied to LIN. Use Value: Fast response time and 23.2 V clamping preserve signal integrity while meeting ISO 17987-4 EMC requirements. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines, vacuum cleaners, and power tools. IC Role / Device Role: Mounted across motor terminals or H-bridge outputs to divert inductive energy to ground. Use Value: 600 W rating handles repeated 100 ms motor stall surges; AEC-Q101 qualification ensures longevity in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-E3/5B | Same VWM (14 V), but lower PPPM (600 W vs. SMBJ's 600 W), identical SMB package; differs in thermal resistance (RθJA = 100 °C/W same), but SMBJ series has slightly higher VC (24.4 V @ 24.6 A) | Functionally interchangeable in most 12 V systems; SMBJ variant may exhibit marginally higher clamping under identical surge conditions | Select SMBG14A-E3/5B when lowest possible clamping voltage (23.2 V) is critical for 3.3 V/5 V logic protection cascaded after DC-DC stage |
| 1.5SMC14A | Same VWM (14 V), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher IFSM (100 A vs. SMBG's 100 A), identical 600 W rating, VC = 23.2 V @ 25.9 A | Requires larger PCB area; better suited for high-current industrial mains interfaces where thermal mass matters more than footprint | Choose 1.5SMC14A only if board layout allows larger SMC footprint and higher thermal inertia is needed for sustained surge duty |
Compared with SMBJ14A-E3/5B and 1.5SMC14A, the SMBG14A-E3/5B delivers the lowest clamping voltage in its class within the smallest standard SMT footprint, making it optimal for space-constrained automotive and portable industrial designs requiring precise overvoltage limiting.
Availability
SMBG14A-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LIN bus systems, and consumer appliance motor drives requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBG14A-E3/5B 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 TransZORB® series was developed specifically for high-reliability, surface-mount transient suppression in automotive and industrial environments where compact size, AEC-Q101 qualification, and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBG14A-E3/5B under a 10/1000 µs surge?
The SMBG14A-E3/5B clamps to a maximum of 23.2 V when subjected to its rated peak pulse current of 25.9 A (10/1000 µs waveform). This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is SMBG14A-E3/5B suitable for bidirectional transient suppression?
No, SMBG14A-E3/5B is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, select the "CA" variant (e.g., SMBG14CA). Using SMBG14A-E3/5B in bidirectional configurations risks failure during negative-going transients.
Does SMBG14A-E3/5B require derating at elevated ambient temperatures?
Yes, SMBG14A-E3/5B must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power drops linearly to ~50% at 100 °C ambient, and its IPPM is similarly reduced. Thermal design must account for PCB copper area and airflow to maintain TJ ≤ 150 °C.
What is the meaning of the "E3/5B" suffix in SMBG14A-E3/5B?
The "E3" denotes RoHS-compliant, industrial-grade matte tin plating; "5B" specifies packaging in 13-inch diameter tape-and-reel format with 3200 units per reel. This differs from "52", which indicates 7-inch reels with 750 units - critical for SMT line feed planning and inventory management.
How does the SMBG14A-E3/5B compare to older SMA-based TVS diodes in terms of surge handling?
The SMBG14A-E3/5B offers identical 600 W peak pulse power as SMA-package equivalents (e.g., SMAJ14A), but in a lower-profile, higher-current-capable SMBG outline. Its RθJL = 20 °C/W improves thermal transfer versus SMA's ~25 °C/W, supporting higher surge repetition rates in thermally constrained layouts.
SMBG14A-E3/5B 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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14A-E3/5B FAQ
1.How can I place an order for SMBG14A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14A-E3/5B 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-E3/5B reliable?
The price and inventory of SMBG14A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14A-E3/5B?
SMBG14A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14A-E3/5B 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-E3/5B?
For technical support, including SMBG14A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14A-E3/5B requirements.
6.How does Aetrix verify that SMBG14A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14A-E3/5B?
All SMBG14A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBG14A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14A-E3/5B Tags
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