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Vishay General Semiconductor - Diodes Division SMBG14CA-M3/5B
- Part No.:
- SMBG14CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CA-M3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
SMBG14CA-M3/5B 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 clamps to ≤23.2 V at 25.9 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG14CA-M3/5B datasheet, SMBG14CA-M3/5B pinout, SMBG14CA-M3/5B application, or SMBG14CA-M3/5B equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, MSL Level 1 reflow compatibility, halogen-free RoHS compliance (M3 suffix), and 150 °C maximum junction temperature for under-hood or high-reliability embedded use.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction, limiting downstream voltage to VC ≤ 23.2 V at IPPM = 25.9 A. Its bidirectional structure enables symmetric suppression of positive and negative transients without polarity sensitivity.
Thermally, it delivers RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting repetitive surge handling up to 0.01% duty cycle. The glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability across -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on with ±5% tolerance. |
| VC @ IPPM | ≤23.2 V at 25.9 A - Clamped voltage during 600 W 10/1000 µs surge; determines protected circuit's maximum stress level. |
| IPPM | 25.9 A - Peak surge current capability; defines minimum trace width and PCB layout robustness needed. |
| PPPM | 600 W - Peak pulse power rating; validates suitability for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3/4 testing. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near heat sources in automotive ECUs or industrial drives. |
| Leakage @ VWM | ≤1.0 µA - Ultra-low reverse leakage; prevents signal distortion or bias shift in high-impedance sensor circuits. |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals, compliant with J-STD-002/JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance. No polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative half-cycle) | Conducts during negative surges; connects to protected line or ground return path depending on topology. |
| Cathode | Transient current sink (positive half-cycle) | Conducts during positive surges; used identically to anode in bidirectional configuration - no functional distinction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114. |
| Halogen-free & RoHS compliant (M3) | Meets IPC-1752 material declaration requirements and EU RoHS Directive 2011/65/EU Annex II. |
| 600 W peak pulse power (10/1000 µs) | Supports full compliance with ISO 16750-2 load dump immunity and IEC 61000-4-5 surge immunity up to 4 kV. |
| MSL Level 1 (260 °C peak) | Enables single-pass reflow assembly without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump, jump-start, and ESD events in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed between connector and transceiver IC input pins to limit transient voltage to safe levels. Use Value: Prevents latch-up or permanent damage to sensitive 3.3 V/5 V interface ICs while maintaining signal integrity due to low capacitance (<100 pF at 0 V). | Use Scenario: Safeguarding PLC digital input modules against induced surges from relay coil switching, motor drive noise, and lightning-induced coupling on field wiring. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on 24 V DC input channels, mounted directly at connector entry point. Use Value: Enables >100,000 surge cycles at 1 kV/500 A (8/20 µs) without degradation, reducing field failure rates in factory automation systems. |
| Telecom Line Card Surge Protection | Consumer USB/DisplayPort ESD Guard |
Use Scenario: Secondary protection stage on Ethernet PHY or xDSL line drivers exposed to telecom central office surge environments per GR-1089-CORE. IC Role / Device Role / Timing Role: Fast-response clamp after gas discharge tube (GDT) primary protection, absorbing residual energy and limiting let-through voltage. Use Value: Achieves <30 ns response time and clamps to <25 V, ensuring PHY ICs survive 6 kV contact ESD per IEC 61000-4-2. | Use Scenario: Board-level ESD protection for USB 2.0 data lines and DisplayPort AUX channel in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with differential pairs to shunt ESD strikes without signal attenuation. Use Value: Maintains <0.5 pF typical junction capacitance at 0 V, preserving signal rise/fall times and eye diagram integrity up to 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG14CA-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3 suffix); base P/N-E3 uses standard molding compound. | Not qualified to AEC-Q101; unsuitable for automotive under-hood applications requiring extended temperature reliability. | Select SMBG14CA-E3/5B only for industrial or consumer designs where halogen content and automotive qualification are not required. |
| SMBJ14CA-M3 | Same VWM/VBR/VC; higher PPPM = 600 W but larger SMB (DO-214AA) package (4.58 mm × 3.94 mm vs. SMBG 4.57 mm × 3.94 mm); identical M3 halogen-free spec. | Lower thermal resistance (RθJA ≈ 85 °C/W) allows higher sustained surge repetition; requires larger PCB footprint. | Choose SMBJ14CA-M3 when higher thermal margin or legacy SMB footprint compatibility is prioritized over space-constrained layouts. |
Compared with SMBG14CA-E3/5B and SMBJ14CA-M3, the SMBG14CA-M3/5B uniquely combines AEC-Q101 qualification, halogen-free construction, and the smallest possible SMBG footprint - making it optimal for space-limited automotive modules needing zero compromise on reliability or regulatory compliance.
Availability
SMBG14CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line cards, and consumer USB/DisplayPort ESD protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG14CA-M3/5B 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 series is engineered specifically for high-density surface-mount transient suppression in automotive, industrial, and telecom applications where AEC-Q101 compliance, low profile, and repeatable clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in SMBG14CA-M3/5B?
The "CA" suffix denotes a bidirectional transient voltage suppressor configuration. Unlike unidirectional variants (e.g., SMBG14A), SMBG14CA-M3/5B provides symmetrical clamping for both positive and negative transients without polarity dependence - essential for AC-coupled lines, differential buses like CAN, and floating signal paths where voltage polarity reversal occurs.
Is SMBG14CA-M3/5B suitable for automotive under-hood applications?
Yes, SMBG14CA-M3/5B is AEC-Q101 qualified and rated for -55 °C to +150 °C junction temperature, making it suitable for under-hood automotive applications such as engine control units, transmission control modules, and body electronics. Its halogen-free (M3) construction and MSL Level 1 reflow compatibility further support high-reliability automotive manufacturing processes.
How does the SMBG package differ from SMB in SMBG14CA-M3/5B versus SMBJ14CA-M3?
The SMBG (DO-215AA) package used in SMBG14CA-M3/5B has identical lead spacing and outline to SMB (DO-214AA) but features a lower profile (1.96 mm height vs. 2.41 mm) and optimized gull-wing leads for improved coplanarity and automated placement yield. This makes SMBG14CA-M3/5B ideal for ultra-thin modules where Z-height is constrained, while retaining full electrical equivalence to SMBJ-series counterparts.
What is the maximum clamping voltage of SMBG14CA-M3/5B at its rated peak pulse current?
The maximum clamping voltage (VC) of SMBG14CA-M3/5B is 23.2 V at its rated peak pulse current (IPPM) of 25.9 A, measured under the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Does SMBG14CA-M3/5B require polarity-aware PCB layout?
No - SMBG14CA-M3/5B is a bidirectional TVS diode and carries no cathode band or polarity marking. Its internal structure provides identical clamping characteristics for both polarities, allowing orientation-agnostic placement on PCBs. This simplifies layout, reduces assembly errors, and supports flexible routing in differential or AC-coupled signal paths where polarity may vary.
SMBG14CA-M3/5B 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14CA-M3/5B FAQ
1.How can I place an order for SMBG14CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CA-M3/5B 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-M3/5B reliable?
The price and inventory of SMBG14CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CA-M3/5B?
SMBG14CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CA-M3/5B 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-M3/5B?
For technical support, including SMBG14CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CA-M3/5B requirements.
6.How does Aetrix verify that SMBG14CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14CA-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14CA-M3/5B?
All SMBG14CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CA-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for SMBG14CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CA-M3/5B Tags
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