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Vishay General Semiconductor - Diodes Division SMBG14CAHE3/52
- Part No.:
- SMBG14CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CAHE3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,382
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Product details
Overview
SMBG14CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust ESD and surge protection on signal/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-grade reliability.
For engineers reviewing the SMBG14CAHE3/52 datasheet, SMBG14CAHE3/52 pinout, SMBG14CAHE3/52 application, or SMBG14CAHE3/52 equivalent, this device is selected for high-reliability bidirectional overvoltage protection in automotive sensor interfaces, industrial I/O ports, and telecom line receivers where low clamping ratio, fast response (<1 ns), and MSL Level 1 solderability 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 leakage (<1.0 μA at VWM) and repeatable clamping performance under repetitive transients.
The device uses a planar silicon avalanche structure optimized for low incremental surge resistance (rd ≈ 0.42 Ω derived from ΔVC/ΔIPPM), enabling tight voltage control during 10/1000 μs surges up to 25.9 A. Thermal resistance RθJA is 100 °C/W on 0.2" × 0.2" copper pads, supporting operation from –55 °C to +150 °C junction temperature.
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 surge; limits downstream IC stress to <23.2 V under worst-case transient. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity. |
| IPPM | 25.9 A - Peak surge current capability; determines minimum trace width and PCB layout robustness for transient paths. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM/MM. |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile (max height 0.030"), RoHS-compliant matte tin-plated terminals, MSL Level 1 (260 °C reflow peak), footprint compatible with standard SMB pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current in either polarity; no polarity marking on device body - symmetrical terminal function. |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to ground or return rail; electrically identical to Anode in bidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware placement in AC-coupled or differential lines. |
| Glass-passivated junction | Stable leakage (<1.0 μA at VWM) and long-term parameter consistency - critical for battery-powered or high-impedance sensor interfaces. |
| 600 W peak pulse rating | Validated with 10/1000 μs waveform at 0.01% duty cycle - meets IEC 61000-4-5 surge immunity requirements for industrial and automotive end equipment. |
| AEC-Q101 qualification | Passed HTOL, TCT, and ESD-HBM/MM tests - enables direct use in automotive ADAS sensors, body control modules, and infotainment interfaces. |
| Low-profile SMBG package | 0.235" × 0.130" footprint, 0.030" max height - supports high-density PCB layouts and automated SMT assembly without tombstoning risk. |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional shunt clamp placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤23.2 V during 25.9 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and ESD events in factory automation. IC Role / Device Role: Line-side TVS on 24 V DC input channels before optocoupler or level-shifter stage. Use Value: Withstands repeated 600 W transients while maintaining <1.0 μA leakage at 14 V, ensuring stable logic thresholds and low standby power loss. |
| Telecom Line Receiver Protection | Consumer USB/Display Interface Protection |
|
Use Scenario: Shielding RS-485/RS-422 receiver inputs in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role: Differential-mode TVS across A/B lines, referenced to common-mode ground. Use Value: Symmetrical clamping ensures balanced voltage suppression on both lines, minimizing common-mode-to-differential conversion and data corruption. |
Use Scenario: Guarding HDMI or USB 2.0 D+/D− lines in set-top boxes and monitors against user ESD events (±8 kV contact). IC Role / Device Role: Low-capacitance bidirectional clamp (CJ ≈ 200 pF typical at 0 V) placed directly at connector. Use Value: Clamps ESD pulses within <1 ns while adding minimal signal distortion - preserves eye diagram integrity at 480 Mbps (USB 2.0) and 2.25 Gbps (HDMI 1.4). |
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 | Same VWM (14 V), lower PPPM (600 W same), but higher VC (25.4 V at 23.7 A); non-AEC-Q101 rated. | Lacks automotive qualification; suitable for industrial/commercial only. | Select when AEC-Q101 is not required and board space allows SMB (DO-214AA) footprint. |
| SMAJ14CA | Same VWM (14 V), lower PPPM (400 W), higher VC (25.4 V at 15.8 A); AEC-Q101 qualified variant available (SMAJ14CAHE3). | Lower surge rating limits use to lighter-duty I/O protection; smaller SMA package reduces thermal mass. | Choose for cost-sensitive consumer designs where 400 W surge immunity suffices and 5.3 mm × 2.7 mm footprint is preferred. |
Compared with SMBJ14CA and SMAJ14CA, SMBG14CAHE3/52 delivers identical 14 V stand-off and 600 W surge rating in a lower-profile package than SMBJ, plus mandatory AEC-Q101 qualification - making it the optimal choice for space-constrained automotive and industrial applications requiring full IEC 61000-4-5 compliance.
Availability
SMBG14CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line receivers, and consumer display interface protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG14CAHE3/52 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, precision, and automotive-grade validation.
The SMBG series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBG14CAHE3/52 and how is it measured?
The SMBG14CAHE3/52 has a maximum clamping voltage (VC) of 23.2 V at 25.9 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards with the device mounted on 0.2" × 0.2" copper pads, confirming its ability to limit transient voltage to ≤23.2 V during worst-case surge events. The SMBG14CAHE3/52 maintains this clamping performance bidirectionally.
Is SMBG14CAHE3/52 suitable for automotive applications?
Yes, SMBG14CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validation against HTOL and temperature cycling make it appropriate for ADAS sensors, body control modules, and infotainment interfaces. The SMBG14CAHE3/52 meets automotive ESD and surge immunity requirements without derating.
How does the bidirectional design of SMBG14CAHE3/52 affect circuit layout?
The SMBG14CAHE3/52 has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled signals, differential buses (e.g., RS-485), or any application where voltage polarity reversal is possible. Unlike unidirectional TVS diodes, the SMBG14CAHE3/52 requires no cathode band alignment, reducing assembly errors and enabling automated optical inspection pass-through.
What is the leakage current specification for SMBG14CAHE3/52 at its stand-off voltage?
The SMBG14CAHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 14 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on circuits and preserves signal integrity in high-impedance sensor front-ends. The SMBG14CAHE3/52 maintains this specification across its full operating temperature range due to its glass-passivated junction construction.
Does SMBG14CAHE3/52 meet industry surge immunity standards like IEC 61000-4-5?
Yes, the SMBG14CAHE3/52's 600 W peak pulse power rating with a 10/1000 μs waveform directly supports compliance with IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line). When implemented with proper PCB layout (short traces, low-inductance grounding), the SMBG14CAHE3/52 enables end equipment to pass full-system surge testing without additional protection stages.
SMBG14CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14CAHE3/52 FAQ
1.How can I place an order for SMBG14CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CAHE3/52 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 SMBG14CAHE3/52 reliable?
The price and inventory of SMBG14CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CAHE3/52?
SMBG14CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CAHE3/52 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 SMBG14CAHE3/52?
For technical support, including SMBG14CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CAHE3/52 requirements.
6.How does Aetrix verify that SMBG14CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14CAHE3/52 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 SMBG14CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14CAHE3/52?
All SMBG14CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CAHE3/52, 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 SMBG14CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG14CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CAHE3/52 Tags
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