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Vishay General Semiconductor - Diodes Division SMBG14CA-E3/52
- Part No.:
- SMBG14CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CA-E3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,847
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Product details
Overview
SMBG14CA-E3/52 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 a 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-grade reliability.
For engineers reviewing the SMBG14CA-E3/52 datasheet, SMBG14CA-E3/52 pinout, SMBG14CA-E3/52 application, or SMBG14CA-E3/52 equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VBR ≈ 1.48), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while the low incremental surge resistance supports effective energy diversion during ESD and lightning-induced transients.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation under high ambient conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating range for protected circuitry. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamping voltage limits downstream voltage stress during 600 W transient surges. |
| PPPM | 600 W (10/1000 µs) - Peak surge power handling capacity validated per ANSI/IEEE C62.35 standards. |
| IPPM | 25.9 A - Maximum non-repetitive peak pulse current supported without degradation. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components including temperature cycling and HTRB. |
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. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency. |
| Lead 1 / Lead 2 | Surge current input/output interface | Both leads connect directly to protected line and ground/reference plane; requires symmetric PCB layout for balanced impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded sensor outputs without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) and ISO 7637-2 Pulse 1/2a/3a when properly decoupled and routed. |
| AEC-Q101 qualification | Validates reliability for automotive applications including infotainment, ADAS camera links, and body control modules. |
| MSL Level 1 (260 °C peak) | Permits standard reflow soldering without pre-baking, reducing manufacturing complexity and cost. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA) and long-term parameter stability across temperature and humidity stress. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input, shunting transients before they reach sensitive analog front-end. Use Value: Maintains signal integrity during 12 V system load dump events (ISO 7637-2 Pulse 5a) by limiting voltage to ≤23.2 V at peak surge current. | Use Scenario: Safeguarding CAN_H and CAN_L lines in factory automation gateways against ESD and inductive switching noise from nearby solenoids or motors. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) bidirectional TVS placed across differential pair, preserving signal rise/fall times while suppressing common-mode surges. Use Value: Prevents bus lockup during ±8 kV contact ESD (IEC 61000-4-2) and maintains >1 Mbps data integrity due to sub-1 ns response time. |
| Consumer USB Port Protection | Telecom DSL Line Interface |
Use Scenario: Shielding USB 2.0 D+ and D− lines in smart home hubs from human-body-model ESD events during plug/unplug cycles. IC Role / Device Role / Timing Role: Symmetric TVS connected between each data line and chassis ground, providing equal clamping in both directions without affecting DC bias. Use Value: Limits transient voltage to <23.2 V within nanoseconds, preventing damage to USB transceivers while maintaining eye diagram compliance. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers in residential gateways from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary surge suppression stage placed before transformer coupling, absorbing up to 600 W of line-to-line and line-to-ground energy. Use Value: Survives ITU-T K.20/21-compliant surges (10/700 µs, 1 kV) without degradation, extending field lifetime of DSLAM interface cards. |
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 (14 V) and VBR, but lower PPPM = 600 W (same rating), identical SMB (DO-214AA) package - slightly larger footprint than SMBG. | SMB package has higher RθJA (110 °C/W vs. 100 °C/W); less optimal for high-density automotive layouts. | Select SMBG14CA-E3/52 when board space is constrained and thermal performance under sustained surge duty is critical. |
| 1.5KE14CA | Higher PPPM = 1500 W, axial DO-201AD package, VWM = 14 V, VC = 23.2 V - same clamping but larger form factor and manual assembly required. | Not suitable for automated SMT lines; used in legacy telecom or industrial power supplies where board real estate is not limited. | Choose SMBG14CA-E3/52 for new SMT designs requiring AEC-Q101, MSL-1, and compact footprint. |
Compared with SMBJ14CA-E3/52 and 1.5KE14CA, SMBG14CA-E3/52 delivers identical electrical protection performance in a smaller, automotive-qualified, surface-mount package optimized for high-volume automated assembly and thermally demanding environments.
Availability
SMBG14CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer USB ports, and telecom DSL line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBG14CA-E3/52 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 developed to deliver high-power transient suppression in ultra-compact surface-mount packages for automotive and industrial systems where space, thermal performance, and AEC-Q101 compliance are mandatory.
FAQ
What is the polarity configuration of SMBG14CA-E3/52?
SMBG14CA-E3/52 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants, it has no cathode band marking and functions identically regardless of terminal orientation in the circuit. This makes SMBG14CA-E3/52 ideal for protecting AC-coupled or differential signal paths such as CAN, RS-485, or audio lines where polarity reversal may occur.
Does SMBG14CA-E3/52 meet automotive qualification standards?
Yes, SMBG14CA-E3/52 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias, temperature cycling, and highly accelerated life testing. The "HE3" variant explicitly denotes AEC-Q101 qualification, and the E3/52 suffix indicates RoHS-compliant, industrial-grade construction. This certification confirms SMBG14CA-E3/52's suitability for under-hood and cabin-mounted automotive electronics subject to harsh thermal and vibration environments.
What is the maximum clamping voltage of SMBG14CA-E3/52 under surge conditions?
The maximum clamping voltage (VC) of SMBG14CA-E3/52 is 23.2 V at a peak pulse current (IPPM) of 25.9 A, measured using the standardized 10/1000 µs waveform. This value reflects the upper limit of voltage seen by downstream circuitry during worst-case transient events. The clamping ratio (VC/VBR) is approximately 1.48, indicating efficient voltage limiting relative to its 15.6–17.2 V breakdown range.
Can SMBG14CA-E3/52 be used in place of a unidirectional TVS like SMBG14A-E3/52?
No - SMBG14CA-E3/52 is strictly bidirectional and cannot replace unidirectional types like SMBG14A-E3/52 in DC-biased circuits where forward conduction must be blocked. Unidirectional devices have a defined cathode and conduct only in reverse breakdown; substituting SMBG14CA-E3/52 would allow unintended forward current flow. Always verify polarity requirements: SMBG14CA-E3/52 is appropriate only where symmetrical protection is needed, such as across differential pairs or AC signal lines.
What is the thermal resistance specification for SMBG14CA-E3/52?
SMBG14CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. These values assume the recommended pad layout from the Vishay datasheet (Document Number: 88456). Proper thermal design using adequate copper area is essential to maintain junction temperature below 150 °C during repetitive surge events.
SMBG14CA-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBG14CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CA-E3/52 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-E3/52 reliable?
The price and inventory of SMBG14CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CA-E3/52?
SMBG14CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CA-E3/52 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-E3/52?
For technical support, including SMBG14CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CA-E3/52 requirements.
6.How does Aetrix verify that SMBG14CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14CA-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14CA-E3/52?
All SMBG14CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CA-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBG14CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CA-E3/52 Tags
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