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Vishay General Semiconductor - Diodes Division SMBG14CA-E3/5B
- Part No.:
- SMBG14CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CA-E3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,817
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Product details
Overview
SMBG14CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 23.2 V at 25.9 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG14CA-E3/5B datasheet, SMBG14CA-E3/5B pinout, SMBG14CA-E3/5B application, or SMBG14CA-E3/5B equivalent, this device is selected for high-reliability ESD and surge protection in CAN bus interfaces, sensor signal conditioning, automotive infotainment power rails, and industrial I/O modules where bidirectional clamping and low leakage (<1 µA at VWM) are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the SMBG package supports automated SMT placement and meets MSL Level 1 (260 °C reflow).
The device is rated for -55 °C to +150 °C operating junction temperature, exhibits 100 °C/W junction-to-ambient thermal resistance, and delivers 23.2 V clamping at 25.9 A peak pulse current - enabling effective protection of downstream 12 V and 15 V logic and analog circuits against ISO 7637-2 and IEC 61000-4-5 transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system operating voltage. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W 10/1000 µs surge; limits stress on protected ICs to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability; sufficient for automotive load-dump and inductive switching transients. |
| ID @ VWM | <1 µA - Ultra-low reverse leakage at stand-off voltage; prevents signal distortion and power loss in high-impedance paths. |
| TJ max | +150 °C - Maximum junction temperature rating; supports under-hood automotive deployment without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads, RoHS-compliant, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts surge current during negative-going transients; symmetrical with cathode for bidirectional operation. |
| Cathode | Transient current entry (positive polarity) | Accepts surge current during positive-going transients; functionally identical to anode due to bidirectional design. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines. |
| 600 W peak pulse power | Withstands repetitive 10/1000 µs surges at 0.01% duty cycle - suitable for frequent switching transients in motor control and power supply inputs. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and electrical stress. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor interfaces. |
| Low-profile SMBG package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair in vehicle ECUs against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector interface to shunt surge energy before it reaches CAN transceiver. Use Value: Limits voltage excursion to ≤23.2 V during 25.9 A surge, preserving transceiver integrity and maintaining bus communication during load dump events. | Use Scenario: Shielding analog output (4–20 mA) or digital I/O lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on sensor signal path, positioned between field wiring and ADC input or GPIO. Use Value: Sub-µA leakage at 14 V stand-off avoids measurement error; 600 W rating handles inductive kickback from solenoid-actuated valves. |
| 12 V Power Rail Protection | Consumer Audio Input/Output Ports |
Use Scenario: Safeguarding 12 V DC input rails of infotainment head units and telematics modules against battery line transients. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and primary filter, placed upstream of DC-DC converters and LDOs. Use Value: Clamps 10/1000 µs surges to 23.2 V, preventing overvoltage damage to downstream regulators and ensuring system reset-free operation. | Use Scenario: ESD and surge suppression on line-in/line-out jacks of home theater receivers and smart speakers. IC Role / Device Role / Timing Role: Interface-level TVS on unbalanced audio traces, mounted adjacent to chassis ground. Use Value: Bidirectional symmetry matches AC-coupled signal swing; low capacitance (typ. 200 pF at 0 V) preserves audio bandwidth up to 20 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA-E3/52 | Same VWM/VBR/VC, but SMB (DO-214AA) package (larger footprint, higher RθJA = 125 °C/W) | Lower power density; less suitable for space-constrained automotive modules | Select when legacy board layout uses SMB pads or higher thermal mass is acceptable. |
| 1.5KE14CA-T | Same electrical specs but axial DO-15 package; 1500 W rating (higher PPPM), but slower response and no AEC-Q101 qualification | Not suitable for SMT production or automotive qualification requirements | Choose only for through-hole prototyping or non-automotive industrial use with higher surge margin needs. |
Compared with SMBJ14CA-E3/52 and 1.5KE14CA-T, SMBG14CA-E3/5B offers superior SMT manufacturability, tighter thermal performance (RθJA = 100 °C/W), and certified automotive reliability - making it optimal for next-generation compact, high-volume automotive and industrial electronics.
Availability
SMBG14CA-E3/5B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface design, and consumer audio port hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG14CA-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 series was engineered for high-density, high-reliability transient suppression in automotive and industrial environments - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent bidirectional clamping performance.
FAQ
What is the clamping voltage of SMBG14CA-E3/5B at its rated peak pulse current?
The SMBG14CA-E3/5B has a maximum clamping voltage (VC) of 23.2 V when subjected to its peak pulse current (IPPM) of 25.9 A under the standard 10/1000 µs waveform. This value is measured per the test conditions specified in Vishay's datasheet document 88456 and ensures downstream components see limited overvoltage stress during surge events. The SMBG14CA-E3/5B maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is SMBG14CA-E3/5B suitable for automotive applications?
Yes, SMBG14CA-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and cabin modules. Its operating junction temperature range of -55 °C to +150 °C, robust glass-passivated junction, and validation against temperature cycling, HTRB, and ESD tests meet automotive reliability standards. The SMBG14CA-E3/5B is commonly deployed in CAN bus protection, body control modules, and infotainment power inputs where qualification and thermal resilience are mandatory.
How does the SMBG14CA-E3/5B differ from unidirectional variants like SMBG14A-E3/5B?
The SMBG14CA-E3/5B is bidirectional, meaning it provides symmetrical clamping for both positive and negative transients, with identical VBR, VC, and IPPM in either polarity. In contrast, SMBG14A-E3/5B is unidirectional and features a cathode band marking; it conducts only during reverse-biased surges and has different forward voltage characteristics. The "CA" suffix in SMBG14CA-E3/5B explicitly denotes bidirectional functionality, making it appropriate for AC-coupled or differential signal lines where polarity is undefined.
What is the leakage current specification for SMBG14CA-E3/5B at its stand-off voltage?
At its 14 V stand-off voltage (VWM), the SMBG14CA-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C, as confirmed in the Vishay datasheet table on page 2. This ultra-low leakage ensures minimal impact on high-impedance sensor outputs or precision reference nodes. The SMBG14CA-E3/5B maintains this performance across its full operating temperature range, supporting stable operation in battery-powered and low-power systems.
What package type and mounting compatibility does SMBG14CA-E3/5B use?
SMBG14CA-E3/5B uses the SMBG (DO-215AA) surface-mount package: 4.57 mm × 3.94 mm footprint, 2.10 mm height, matte tin-plated leads, and MSL Level 1 rating for 260 °C reflow. It is compatible with standard SMT assembly processes, including stencil printing, pick-and-place, and convection reflow. The SMBG14CA-E3/5B requires the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per terminal to achieve rated thermal and surge performance.
SMBG14CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBG14CA-E3/5B FAQ
1.How can I place an order for SMBG14CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CA-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 SMBG14CA-E3/5B reliable?
The price and inventory of SMBG14CA-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 SMBG14CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CA-E3/5B?
SMBG14CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CA-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 SMBG14CA-E3/5B?
For technical support, including SMBG14CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CA-E3/5B requirements.
6.How does Aetrix verify that SMBG14CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14CA-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 SMBG14CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14CA-E3/5B?
All SMBG14CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CA-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 SMBG14CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBG14CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CA-E3/5B Tags
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