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Vishay General Semiconductor - Diodes Division SMBG14CAHE3/5B
- Part No.:
- SMBG14CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CAHE3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,742
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Product details
Overview
SMBG14CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping ESD and surge transients 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), <1.0 μA reverse leakage at VWM, and 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG14CAHE3/5B datasheet, SMBG14CAHE3/5B pinout, SMBG14CAHE3/5B application, or SMBG14CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low-profile SMBG package compatibility with automated SMT placement, and compliance with UL 497B for telecom and automotive surge protection systems.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications for positive and negative surges. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01% duty cycle.
Designed for surface-mount use on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, it delivers thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C while meeting MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage under 600 W 10/1000 μs surge; limits stress on downstream ICs like microcontrollers or CAN transceivers. |
| IPPM | 25.9 A - Peak pulse current capability; determines survivability against IEC 61000-4-5 Level 4 (4 kV) surges when properly laid out. |
| PPPM | 600 W - Peak pulse power rating; supports high-energy transient suppression without thermal runaway. |
| TJ max. | 150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and no polarity marking (bidirectional device).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally across the junction without polarity dependency. |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and heat dissipation path via soldered leads to PCB copper pads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN FD, sensor bridges) without external polarity management. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source) on 50 Ω lines when mounted per recommended pad layout. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring long-term field reliability under thermal and vibration stress. |
| Low-profile SMBG package | 0.235" × 0.130" footprint with 0.030" height - fits high-density layouts and passes automated optical inspection (AOI) after reflow. |
| Glass-passivated junction | Ensures stable VBR tolerance (<±5%), low leakage (<1 μA), and immunity to humidity-induced parameter drift in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and MCU ADC input, limiting transients to ≤23.2 V during 100 ns–1 ms events. Use Value: Prevents ADC saturation and latch-up in 12-bit SAR converters while maintaining signal integrity below 14 V nominal operating range. | Use Scenario: Shielding differential RS-485 transceivers (e.g., SN65HVD230) from EFT bursts and lightning-induced surges on factory floor cabling. IC Role / Device Role / Timing Role: Common-mode transient suppressor across A/B bus lines, activated within <1 ns to clamp common-mode spikes above ±14 V. Use Value: Maintains data integrity at 10 Mbps by holding differential swing within receiver common-mode range and avoiding false triggering. |
| Telecom Line Card Surge Suppression | OBD-II Diagnostic Port Protection |
Use Scenario: Safeguarding Ethernet PHY front-end circuitry in VoIP gateways subjected to induced surges from nearby AC mains or PoE injectors. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tube (GDT), clamping residual energy after primary diversion. Use Value: Limits let-through voltage to <23.2 V, protecting 3.3 V PHY I/O pins rated for only ±2 kV HBM ESD without derating. | Use Scenario: Hardening OBD-II connector pins (CAN-H/CAN-L, K-Line) against jump-start transients and alternator ripple in service bay diagnostics. IC Role / Device Role / Timing Role: Bidirectional TVS array element (used per-line) absorbing ±25 A surges per ISO 16750-2 Pulse 5a/b test profiles. Use Value: Enables robust plug/unplug cycles and eliminates field returns due to CAN controller resets caused by >20 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CAHE3/5B | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating) and identical SMB (DO-214AA) package - slightly larger footprint (0.265" × 0.165") and higher RθJA (110 °C/W). | Less suitable for ultra-dense layouts; marginally reduced thermal performance in sealed enclosures. | Select SMBJ14CAHE3/5B only if legacy board design uses SMB footprint and AEC-Q101 compliance is not required. |
| SMCJ14CAHE3/5B | Same electrical specs but in larger SMC (DO-214AB) package (0.315" × 0.215"); PPPM = 1500 W, RθJA = 40 °C/W - significantly higher surge handling and thermal margin. | Overqualified for compact consumer modules; requires PCB area increase and may exceed height constraints. | Choose SMCJ14CAHE3/5B when system-level surge testing exceeds IEC 61000-4-5 Level 4 or ambient temperatures exceed 105 °C. |
Compared with SMBJ14CAHE3/5B and SMCJ14CAHE3/5B, SMBG14CAHE3/5B uniquely balances AEC-Q101 qualification, minimal SMBG footprint, and 600 W surge capacity - making it optimal for space-constrained automotive and industrial modules where thermal budget and reliability certification are jointly critical.
Availability
SMBG14CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line card protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for SMBG14CAHE3/5B 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 high-reliability, automotive-qualified, and industry-standard solutions.
The SMBG TransZORB® series is engineered specifically for surface-mount transient suppression in demanding automotive, industrial, and telecom applications - prioritizing fast response, repeatable clamping, and qualification to AEC-Q101 and UL 497B.
FAQ
What is the polarity configuration of SMBG14CAHE3/5B?
SMBG14CAHE3/5B is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking on the package. Its electrical characteristics - including VBR, VC, and IPPM - apply identically in both directions, enabling direct placement across AC-coupled or floating signal pairs without orientation concerns during automated assembly.
Does SMBG14CAHE3/5B meet automotive reliability standards?
Yes, SMBG14CAHE3/5B carries full AEC-Q101 qualification per the Vishay datasheet (Document Number: 88456, Revision: 09-Jan-2024). This includes validation for temperature cycling, high-temperature reverse bias (HTRB), and ESD testing - confirming its suitability for under-hood and chassis-mounted automotive electronics where long-term field reliability is mandatory.
What is the maximum clamping voltage of SMBG14CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of SMBG14CAHE3/5B is 23.2 V, measured at its peak pulse current (IPPM) of 25.9 A using a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream.
How does the SMBG package of SMBG14CAHE3/5B differ from standard SMB?
The SMBG (DO-215AA) package used by SMBG14CAHE3/5B has a smaller footprint (0.235" × 0.130") and lower profile (0.030" height) than the SMB (DO-214AA) package. It also features gull-wing leads optimized for fine-pitch SMT placement and improved thermal coupling to PCB copper, delivering RθJA = 100 °C/W versus ~110 °C/W for SMB - enhancing power density in compact designs.
Is SMBG14CAHE3/5B compliant with RoHS and halogen-free requirements?
SMBG14CAHE3/5B is RoHS compliant (per EU Directive 2011/65/EU) and carries the HE3 suffix, indicating industrial-grade RoHS compliance with AEC-Q101 qualification. It is not halogen-free; for halogen-free + RoHS + AEC-Q101, the HM3-suffixed variant (e.g., SMBG14CAHM3/5B) must be selected instead.
SMBG14CAHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14CAHE3/5B FAQ
1.How can I place an order for SMBG14CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CAHE3/5B 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 SMBG14CAHE3/5B reliable?
The price and inventory of SMBG14CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CAHE3/5B?
SMBG14CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CAHE3/5B 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 SMBG14CAHE3/5B?
For technical support, including SMBG14CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CAHE3/5B requirements.
6.How does Aetrix verify that SMBG14CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14CAHE3/5B 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 SMBG14CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14CAHE3/5B?
All SMBG14CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CAHE3/5B, 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 SMBG14CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG14CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CAHE3/5B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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