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Vishay General Semiconductor - Diodes Division SMBG14CA-M3/52
- Part No.:
- SMBG14CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14CA-M3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,885
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Product details
Overview
SMBG14CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, and 600 W peak pulse power (10/1000 μs). It clamps transients to ≤23.2 V at 25.9 A, with <1.0 μA reverse leakage at VWM, and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMBG14CA-M3/52 datasheet, SMBG14CA-M3/52 pinout, SMBG14CA-M3/52 application, or SMBG14CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, 150 °C max junction temperature, halogen-free RoHS compliance (M3 suffix), low incremental surge resistance, and suitability for ESD/surge protection on sensor signal lines, CAN bus interfaces, and power rails in harsh environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5 % typical) and long-term reliability under repetitive surge stress.
Designed for surface-mount automated assembly, SMBG14CA-M3/52 features MSL Level 1 moisture sensitivity and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads, supporting sustained operation up to TJ = 150 °C.
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 circuit. |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - Ensures precise, repeatable avalanche initiation across production lots. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W transient; determines maximum stress on downstream ICs. |
| ID @ VWM | <1.0 μA - Negligible leakage current preserves signal integrity and battery life in always-on systems. |
| PPPM | 600 W (10/1000 μs waveform) - Sustains high-energy surges common in automotive load-dump and inductive switching events. |
| TJ max | +150 °C - Enables deployment in under-hood automotive modules and industrial motor drives without derating. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals accept voltage transients of either polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping requires no orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN-H/CAN-L) without external polarity management. |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and ISO 16750-2 load-dump surges in automotive ECUs. |
| Halogen-free, RoHS-compliant (M3) | Meets automotive OEM environmental requirements and supports lead-free reflow profiles up to 260 °C peak. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage margin needed for protected ICs, allowing tighter design margins and smaller system-level protection networks. |
| MSL Level 1 rating | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and cycle time for high-volume automotive PCB assembly. |
Applications
| Automotive Sensor Interface | CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine control units exposed to ignition noise and alternator ripple. IC Role / Device Role: Bidirectional TVS placed across sensor supply and ground to clamp fast-rising transients before they reach ADC inputs or signal conditioning op-amps. Use Value: Prevents sensor offset drift and data corruption by limiting voltage excursions to ≤23.2 V during 10/1000 μs surges up to 25.9 A. | Use Scenario: Safeguarding CAN transceivers against ESD (IEC 61000-4-2 ±25 kV air) and electrical fast transients (IEC 61000-4-4) in body control modules. IC Role / Device Role: Placed differentially between CAN-H and CAN-L lines to absorb common-mode and differential-mode surges without disrupting bus biasing. Use Value: Maintains CAN signal integrity by clamping transients within the transceiver's absolute maximum ratings while preserving bit timing due to sub-nanosecond response. |
| Industrial Motor Drive Feedback | Telecom Power Input Stage |
Use Scenario: Shielding encoder and resolver feedback signals in servo drives from commutation-induced dV/dt coupling and ground bounce. IC Role / Device Role: Mounted directly at connector entry points on feedback cables to shunt induced surges before reaching isolation amplifiers or digital interface ICs. Use Value: Reduces need for additional filtering components by providing low-impedance clamping path with <1.0 μA leakage at 14 V nominal rail. | Use Scenario: Front-end surge suppression on 12 V/24 V DC input of telecom remote radio units deployed outdoors. IC Role / Device Role: Primary TVS on power entry board, coordinated with upstream fuse and downstream DC-DC converter input capacitors. Use Value: Absorbs 600 W line-to-ground surges per IEC 61000-4-5 (1.2/50 μs + 8/20 μs combo wave) without degradation after ≥1000 pulses. |
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-M3/52 | Same VWM (14 V), identical VBR and VC, but SMBJ package (DO-214AA) has larger footprint and higher thermal mass. | Suitable where board space allows larger package and higher IPPM margin is required (SMBJ14CA: 31.3 A vs. SMBG14CA: 25.9 A). | Select SMBJ14CA-M3/52 only if layout accommodates 4.58 mm × 3.94 mm footprint and thermal dissipation exceeds SMBG limits. |
| 1.5KE14CA | Same VWM and bidirectional function, but through-hole DO-201 package; 600 W rating, but slower thermal response and no AEC-Q101 qualification. | Used in legacy industrial power supplies where automated SMT is not available or rework flexibility is prioritized over automotive compliance. | Choose 1.5KE14CA only for non-automotive, non-high-reliability applications where manual assembly or socket-based prototyping is required. |
Compared with SMBJ14CA-M3/52 and 1.5KE14CA, SMBG14CA-M3/52 delivers optimal balance of compact size (SMBG), AEC-Q101 qualification, and verified 25.9 A surge handling-making it the preferred choice for space-constrained, automotive-grade designs requiring zero-polarity-orientation placement.
Availability
SMBG14CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus hardening, industrial motor feedback circuits, and telecom DC input stages requiring stable component supply and full traceability.
Supply support for SMBG14CA-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was engineered specifically for high-density, automotive-qualified transient suppression-prioritizing low profile, bidirectional symmetry, and robust surge endurance in surface-mount form factors.
FAQ
What is the clamping voltage of SMBG14CA-M3/52 at its rated peak pulse current?
The SMBG14CA-M3/52 clamps to a maximum of 23.2 V when subjected to its peak pulse current of 25.9 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88456) and reflects worst-case VC across process variation and temperature extremes. Designers must ensure downstream components tolerate this clamped voltage under surge conditions.
Is SMBG14CA-M3/52 suitable for protecting CAN FD interfaces?
Yes, SMBG14CA-M3/52 is suitable for CAN FD protection due to its bidirectional symmetry, sub-nanosecond response time, and low capacitance (<100 pF at 0 V, typical). Its 23.2 V clamping voltage stays well below the absolute maximum ratings of common CAN FD transceivers (e.g., TJA1057, MAX33012), and its AEC-Q101 qualification confirms robustness in automotive ECU environments where CAN FD is deployed.
Does SMBG14CA-M3/52 require orientation during PCB placement?
No, SMBG14CA-M3/52 does not require orientation during PCB placement because it is a bidirectional TVS diode with symmetrical terminals and no polarity marking. The SMBG (DO-215AA) package has identical anode/cathode functionality in both directions, eliminating risk of misplacement and simplifying automated assembly for differential or AC-coupled signal paths.
What is the meaning of the "M3" suffix in SMBG14CA-M3/52?
"M3" denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. Unlike "E3" (standard RoHS), M3 ensures compliance with stricter environmental mandates such as EU Directive 2011/65/EU Annex II amendments and major automotive OEM substance restrictions. It also guarantees compatibility with lead-free reflow profiles peaking at 260 °C.
How does SMBG14CA-M3/52 compare to unidirectional variants like SMBG14A-M3/52?
SMBG14CA-M3/52 differs from SMBG14A-M3/52 in polarity: "CA" indicates bidirectional operation (clamps both polarities), while "A" denotes unidirectional (cathode-banded, blocks reverse current until breakdown). SMBG14CA-M3/52 is used where transients may swing positive or negative relative to ground-such as differential buses or AC-coupled sensors-whereas SMBG14A-M3/52 suits DC power rail protection with defined polarity.
SMBG14CA-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:
- -
- 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-M3/52 FAQ
1.How can I place an order for SMBG14CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14CA-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 SMBG14CA-M3/52 reliable?
The price and inventory of SMBG14CA-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 SMBG14CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14CA-M3/52?
SMBG14CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14CA-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 SMBG14CA-M3/52?
For technical support, including SMBG14CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14CA-M3/52 requirements.
6.How does Aetrix verify that SMBG14CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14CA-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 SMBG14CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14CA-M3/52?
All SMBG14CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14CA-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 SMBG14CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBG14CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14CA-M3/52 Tags
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