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Vishay General Semiconductor - Diodes Division SMBG14A-M3/52
- Part No.:
- SMBG14A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14A-M3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,168
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Product details
Overview
SMBG14A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on power and signal lines. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces, industrial I/O ports, and DC power rails against ESD and load dump.
For engineers reviewing the SMBG14A-M3/52 datasheet, SMBG14A-M3/52 pinout, SMBG14A-M3/52 application, or SMBG14A-M3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance data, and real-world protection use cases - all aligned with Vishay's official 88456 document revision 09-Jan-2024.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ns) to transient overvoltages. Its glass-passivated junction ensures stable leakage performance (≤1.0 µA at VWM) and low incremental surge resistance, enabling precise voltage limiting during repetitive 0.01% duty-cycle surges.
The SMBG14A-M3/52 is rated for TJ = –55 °C to +150 °C operation, with RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 20 °C/W, supporting reliable thermal management in high-density PCB layouts. Its M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold range defining turn-on consistency across production lots. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W transient; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; defines survivability under ISO 7637-2 Pulse 1/2/5a events. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports load-dump immunity in 12 V automotive systems. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood or industrial enclosures without derating. |
| Package | SMBG (DO-215AA) - Low-profile SMT outline (6.48 mm × 3.94 mm × 2.10 mm) compatible with automated placement and reflow. |
Pinout & Package
SMBG14A-M3/52 uses the SMBG (DO-215AA) surface-mount package with two terminals: anode and cathode. The cathode is marked by a band on the body; polarity must be observed during PCB layout to ensure correct unidirectional clamping direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Clamping output node | Connected to protected line; conducts during overvoltage to shunt current to ground or rail. |
| Anode | Reference node | Typically tied to ground (for single-rail protection) or negative rail; establishes reference for clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power supplies. |
| Halogen-free & RoHS compliant (M3) | Meets environmental compliance requirements for industrial and automotive OEMs without compromising surge robustness. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients such as ISO 16750-2 load dump and IEC 61000-4-5 surge events. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Ensures tight voltage regulation during clamping - critical for protecting 16 V-tolerant ICs like CAN transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in vehicle cabins from ESD and switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and ground to clamp transients before reaching MCU ADC input. Use Value: Limits voltage to ≤23.2 V during 25.9 A surge, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor interface ICs. |
Use Scenario: Safeguarding PLC digital input modules exposed to inductive kickback from solenoid or relay coils. IC Role / Device Role / Timing Role: Mounted across input terminals to divert 100 A surge currents away from optocoupler or Schmitt trigger inputs. Use Value: Withstands 8.3 ms half-sine surges up to 100 A (IFSM), eliminating need for external series impedance in ruggedized field wiring. |
| DC Power Rail Protection | Telecom Interface Protection |
Use Scenario: Guarding 12 V/24 V supply lines feeding motor drivers or communication modules against load dump and battery reversal. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-rail to clamp positive transients while blocking reverse voltage. Use Value: Maintains 14 V stand-off with <1.0 µA leakage at 25 °C, minimizing quiescent power loss in always-on systems. |
Use Scenario: Shielding RS-485 transceiver pins from lightning-induced surges on outdoor telecom links. IC Role / Device Role / Timing Role: Paired with common-mode chokes to suppress differential-mode transients on A/B bus lines. Use Value: Achieves <1 ns response time and 23.2 V clamping, keeping transceiver stress below absolute maximum ratings per TIA/EIA-485. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG14AHE3/52 | AEC-Q101 qualified; same VWM, VBR, VC, and PPPM; E3 suffix denotes standard RoHS (non-halogen-free) construction. | Preferred where AEC-Q101 is mandatory but halogen-free material is not required (e.g., non-cabin automotive modules). | Select when AEC-Q101 compliance is prioritized over halogen-free content; identical electrical performance and footprint. |
| SMBJ14A-M3 | Same VWM (14 V), VBR (15.6–17.2 V), and VC (23.2 V), but SMB (DO-214AA) package - 0.215" wide vs. SMBG's 0.155"; higher RθJA (120 °C/W). | Better suited for legacy designs using SMB footprints or where higher thermal resistance is acceptable. | Choose only if existing PCB layout uses SMB pads; otherwise SMBG offers superior thermal performance and smaller footprint. |
Compared with SMBG14AHE3/52, the SMBG14A-M3/52 adds halogen-free compliance without sacrificing AEC-Q101 qualification or clamping performance; versus SMBJ14A-M3, it delivers lower thermal resistance and 19% smaller board area - critical for space-constrained automotive ECUs and industrial edge nodes.
Availability
SMBG14A-M3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMBG14A-M3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMBG Transient Voltage Suppressor family targets high-reliability protection in harsh environments - engineered for AEC-Q101 compliance, low-profile SMT assembly, and robust surge immunity in automotive, industrial, and telecom applications.
FAQ
What is the maximum clamping voltage of SMBG14A-M3/52 under peak pulse conditions?
The SMBG14A-M3/52 has a maximum clamping voltage (VC) of 23.2 V at 25.9 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per Vishay's datasheet 88456 and defines the upper voltage limit imposed on protected circuits during transient events. The SMBG14A-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG14A-M3/52 qualified for automotive applications?
Yes, SMBG14A-M3/52 is AEC-Q101 qualified per Vishay's documentation, confirming its suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. The M3 suffix further indicates halogen-free, RoHS-compliant construction meeting automotive material requirements. SMBG14A-M3/52 undergoes stress testing for temperature cycling, humidity, and mechanical shock per AEC-Q101 standards.
What does the "M3" suffix mean in SMBG14A-M3/52?
The "M3" suffix in SMBG14A-M3/52 denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and matte tin-plated leads solderable per J-STD-002. It distinguishes this variant from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free). SMBG14A-M3/52 meets UL 94 V-0 flammability rating and MSL Level 1 handling requirements.
Can SMBG14A-M3/52 be used in bidirectional protection circuits?
No, SMBG14A-M3/52 is a unidirectional TVS diode - indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional protection, Vishay specifies parts with "CA" suffix (e.g., SMBG14CA). Using SMBG14A-M3/52 in bidirectional configurations would result in forward conduction during negative transients, potentially damaging the device or unprotected circuitry.
What is the thermal resistance of SMBG14A-M3/52, and how does it affect PCB layout?
SMBG14A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's DO-215AA outline. To maintain reliability under repeated surges, designers must allocate adequate copper area and avoid excessive trace length - undersized pads will raise RθJA and risk thermal runaway. SMBG14A-M3/52 also has RθJL = 20 °C/W for lead-to-case conduction.
SMBG14A-M3/52 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBG14A-M3/52 FAQ
1.How can I place an order for SMBG14A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14A-M3/52 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 SMBG14A-M3/52 reliable?
The price and inventory of SMBG14A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14A-M3/52?
SMBG14A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14A-M3/52 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 SMBG14A-M3/52?
For technical support, including SMBG14A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14A-M3/52 requirements.
6.How does Aetrix verify that SMBG14A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14A-M3/52 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 SMBG14A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14A-M3/52?
All SMBG14A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14A-M3/52, 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 SMBG14A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG14A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14A-M3/52 Tags
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