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Vishay General Semiconductor - Diodes Division SMBG30CA-M3/52
- Part No.:
- SMBG30CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30CA-M3/52.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,277
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Product details
Overview
SMBG30CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V maximum clamping voltage (VC) at 12.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG30CA-M3/52 datasheet, SMBG30CA-M3/52 pinout, SMBG30CA-M3/52 application, or SMBG30CA-M3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and leakage characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced transients.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and delivers 600 W peak pulse power under repetitive 0.01% duty cycle conditions - validated with 0.2" × 0.2" copper pad layout per Fig. 2 and Fig. 3 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below system rail. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy transients without failure under defined waveform. |
| ID @ VWM | 1.0 μA - Reverse leakage at stand-off voltage; negligible power loss and signal integrity impact in standby. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; allows efficient heat transfer to PCB copper, critical for repetitive surge reliability. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H), with 0.97 mm lead width and 1.47 mm terminal spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity marking required. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line and ground or differential pair. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Halogen-free, RoHS compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive OEM production without brominated flame retardants. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy surges common in 12 V/24 V vehicle power systems and industrial motor drives. |
| Low RθJL = 20 °C/W | Enables rapid heat dissipation into PCB copper, supporting repetitive surge events without thermal runaway. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor lines (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground to limit transient voltage to <48.4 V. Use Value: Prevents damage to downstream MCU ADC inputs or transceivers during 12 V system load dump events up to 600 W. | Use Scenario: Safeguarding PLC digital input modules against inductive kickback from solenoid or relay coils. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to clamp switching transients before they reach isolation barrier or logic interface. Use Value: Maintains functional safety by limiting transient overshoot to ≤48.4 V, ensuring reliable operation under IEC 61000-4-4 level 4 stress. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from ESD and lightning-induced surges in outdoor telecom equipment. IC Role / Device Role / Timing Role: Bidirectional TVS on differential data lines (e.g., TX+/TX−) referenced to local ground plane. Use Value: Provides sub-1 ns response to ±8 kV contact ESD (IEC 61000-4-2), preserving signal integrity without adding capacitance (>600 pF typical at 0 V). | Use Scenario: Secondary-side overvoltage suppression on DC output rails of wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Clamp component across +VOUT and GND to absorb residual transients escaping primary-side MOV or Y-cap filtering. Use Value: Limits output rail excursions to ≤48.4 V during surge events, preventing latch-up or damage to connected USB or PMIC circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA-M3/52 | Same VWM (30 V), but lower PPPM = 600 W (same rating), higher VC = 48.4 V (identical), same SMB package but SMBJ (DO-214AA) has larger footprint (4.57 mm × 3.94 mm vs. SMBG's 4.57 mm × 3.94 mm - identical L/W but different leadform). | SMBJ variant uses DO-214AA package with gull-wing leads; less suitable for ultra-dense layouts where SMBG's compact DO-215AA profile is preferred. | Select SMBG30CA-M3/52 when board space is constrained and DO-215AA mounting is specified; verify pad layout compatibility. |
| SMCJ30CA-M3 | Same VWM/VBR/VC, but higher PPPM = 1500 W and larger SMC (DO-214AB) package; RθJL = 15 °C/W (lower thermal resistance). | Used where higher single-pulse energy absorption is required (e.g., 24 V truck systems), but occupies ~2.5× PCB area versus SMBG. | Choose SMCJ30CA-M3 only if 1500 W rating is mandatory; otherwise SMBG30CA-M3/52 offers optimal balance of size, power, and thermal performance. |
Compared with SMBJ30CA-M3/52 and SMCJ30CA-M3, SMBG30CA-M3/52 delivers identical electrical protection performance in the smallest standardized surface-mount TVS footprint (DO-215AA), enabling higher board density without sacrificing AEC-Q101 qualification or halogen-free compliance.
Availability
SMBG30CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side clamping requiring stable component supply and long-term lifecycle support.
Supply support for SMBG30CA-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, automotive qualification, and high-volume manufacturability.
The SMBG series is engineered specifically for high-reliability transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 validation, halogen-free construction, and optimized thermal performance in the DO-215AA package.
FAQ
What is the clamping voltage of SMBG30CA-M3/52 at its rated peak pulse current?
The SMBG30CA-M3/52 has a maximum clamping voltage (VC) of 48.4 V at 12.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG30CA-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG30CA-M3/52 suitable for automotive applications?
Yes, SMBG30CA-M3/52 is AEC-Q101 qualified per the Vishay datasheet (document 88456, page 1), confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its halogen-free (M3) construction, -55 °C to +150 °C operating range, and MSL Level 1 reflow rating further support automotive-grade manufacturing and under-hood deployment. The SMBG30CA-M3/52 meets these requirements without derating.
What does the "CA" suffix indicate in SMBG30CA-M3/52?
The "CA" suffix in SMBG30CA-M3/52 denotes a bidirectional transient voltage suppressor configuration, meaning the device provides symmetrical clamping in both polarities - essential for protecting AC-coupled or differential signal lines like CAN, RS-485, or Ethernet. Unlike unidirectional "A" variants, SMBG30CA-M3/52 has no polarity marking and identical VBR, VC, and leakage in either direction. This is explicitly confirmed in the Vishay family datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
How does the SMBG package differ from SMBJ or SMC packages?
The SMBG (DO-215AA) package used by SMBG30CA-M3/52 measures 4.57 mm × 3.94 mm × 2.10 mm and features a compact, low-profile gull-wing leadform optimized for dense PCB layouts. It differs from SMBJ (DO-214AA) in lead geometry and from SMC (DO-214AB) in smaller footprint and lower power rating (600 W vs. 1500 W). The SMBG30CA-M3/52 leverages this package for superior board-area efficiency while maintaining full AEC-Q101 compliance and thermal performance.
What is the maximum reverse leakage current for SMBG30CA-M3/52 at its stand-off voltage?
The SMBG30CA-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 30 V stand-off voltage (VWM), as specified in the Electrical Characteristics table on page 2 of Vishay document 88456. This low leakage ensures minimal power loss and signal distortion in always-on protection configurations, such as those found in automotive always-live circuits or industrial sensor front-ends. The SMBG30CA-M3/52 maintains this specification across its full temperature range.
SMBG30CA-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMBG30CA-M3/52 FAQ
1.How can I place an order for SMBG30CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30CA-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 SMBG30CA-M3/52 reliable?
The price and inventory of SMBG30CA-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 SMBG30CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG30CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30CA-M3/52?
SMBG30CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30CA-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 SMBG30CA-M3/52?
For technical support, including SMBG30CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30CA-M3/52 requirements.
6.How does Aetrix verify that SMBG30CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG30CA-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 SMBG30CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG30CA-M3/52?
All SMBG30CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30CA-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 SMBG30CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBG30CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30CA-M3/52 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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