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Vishay General Semiconductor - Diodes Division SMBG30A-E3/52
- Part No.:
- SMBG30A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30A-E3/52.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG30A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V 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 power electronics, industrial motor drives, and telecom interface protection.
For engineers reviewing the SMBG30A-E3/52 datasheet, SMBG30A-E3/52 pinout, SMBG30A-E3/52 application, or SMBG30A-E3/52 equivalent, key selection criteria include unidirectional polarity, DO-215AA (SMBG) surface-mount package compatibility, AEC-Q101 qualification, 150 °C max junction temperature, and low incremental surge resistance for fast transient suppression in 12 V/24 V DC systems.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 30 V and rapidly transitions to low-impedance conduction above VBR = 33.3–36.8 V to limit transient energy. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior under repetitive surges.
The SMBG30A-E3/52 delivers 600 W peak pulse power handling with <1 ns response time and meets MSL Level 1 per J-STD-020 (260 °C reflow peak). It is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine) and supports operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets system-level DC rail compatibility (e.g., 24 V nominal bus) |
| VBR @ IT = 1 mA | 33.3–36.8 V - Confirmed breakdown threshold range; defines minimum overvoltage trigger point for reliable protection activation |
| VC @ IPPM = 12.4 A | 48.4 V - Clamped voltage during 600 W transient event; determines maximum stress imposed on downstream ICs or MOSFETs |
| PPPM | 600 W - Peak pulse power capability with 10/1000 μs waveform; validates suitability for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Level 3/4 transients |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection against load dump events in automotive 12 V systems |
| Junction Temp Range | –55 °C to +150 °C - Enables deployment in under-hood automotive, industrial control cabinets, and outdoor telecom enclosures |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMBG (DO-215AA) - Surface-mount, low-profile gull-wing leaded package with matte tin-plated terminals; 0.235" × 0.130" footprint; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR; polarity must be observed for unidirectional operation |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop; low-inductance layout critical for sub-ns response |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables compliance with ISO 16750-2 and IEC 61000-4-5 surge immunity requirements without derating in standard PCB layouts |
| AEC-Q101 qualified | Validates long-term reliability in automotive environments including thermal shock, humidity bias, and mechanical vibration stress |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) across temperature and lifetime, critical for battery-powered sensor nodes |
| MSL Level 1 (260 °C peak) | Supports standard SMT reflow profiles without preconditioning; eliminates moisture-related popcorning risk during assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive switch-off), improving protection margin for sensitive gate drivers |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 12 V supply rails in body control modules (BCM) and junction boxes from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤48.4 V during 100 A load dump events, preventing damage to 40 V-rated buck controllers and CAN transceivers. | Use Scenario: Safeguarding gate drive signals and feedback paths in variable-frequency AC drives exposed to IGBT switching noise. IC Role / Device Role / Timing Role: TVS mounted at motor controller PCB edge to clamp coupled transients from adjacent high-dV/dt power stages. Use Value: Sub-1 ns response and 48.4 V clamping prevent false triggering of isolated gate drivers and maintain PWM timing integrity. |
| Telecom Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding RS-485/RS-232 data lines and auxiliary 5–12 V bias rails in base station remote radio units (RRUs). IC Role / Device Role / Timing Role: Bidirectional-capable variant family member used in unidirectional configuration on DC bias lines feeding RF front-end ICs. Use Value: 600 W rating handles lightning-induced surges per IEC 61000-4-5 (10/700 μs), while low capacitance avoids signal integrity degradation on 10 Mbps links. | Use Scenario: Overvoltage suppression on primary-side rectified output of universal-input AC/DC adapters (e.g., 12 V/24 V wall warts). IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bridge rectifier and before bulk capacitor to absorb line-switching transients. Use Value: 30 V VWM allows safe operation across full 12–24 V output range; 150 °C rating supports sealed, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), identical SMB package; differs in thermal resistance (RθJA = 85 °C/W vs. 100 °C/W for SMBG30A-E3/52) | Optimized for higher-power density layouts where board-level heat spreading is limited | Select SMBJ30A-E3/52 if thermal management favors lower RθJA; verify pad layout matches SMBJ's slightly larger copper requirement. |
| SMCJ30A-E3/52 | Higher PPPM = 1500 W, same VWM/VBR, but larger SMC (DO-214AB) package; VC = 48.4 V unchanged | Used where higher single-event energy absorption is required (e.g., heavy industrial mains input stages) | Choose SMCJ30A-E3/52 only when 600 W is insufficient; requires PCB redesign due to larger footprint and different mounting pads. |
Compared with SMBJ30A-E3/52 and SMCJ30A-E3/52, the SMBG30A-E3/52 offers AEC-Q101 qualification and tighter thermal performance margin in compact SMBG packaging - making it preferred for space-constrained automotive and industrial modules requiring certified reliability without footprint penalty.
Availability
SMBG30A-E3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, and telecom interface protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBG30A-E3/52 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, precision, and automotive-grade validation.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained, thermally demanding applications - targeting automotive ECUs, industrial PLCs, and telecom infrastructure where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the SMBG30A-E3/52 under a 600 W transient?
The SMBG30A-E3/52 has a maximum clamping voltage (VC) of 48.4 V at 12.4 A peak pulse current, corresponding to the 600 W 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG30A-E3/52 maintains this clamping performance across its full operating temperature range.
Is the SMBG30A-E3/52 suitable for automotive applications?
Yes, the SMBG30A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. It supports junction temperatures from –55 °C to +150 °C, withstands 100 A load dump surges (8.3 ms), and passes humidity bias, temperature cycling, and mechanical shock tests per AEC-Q101. The SMBG30A-E3/52 is commonly deployed in body control modules, ADAS power supplies, and infotainment system interfaces.
What does the "E3/52" suffix indicate in SMBG30A-E3/52?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This format ensures compatibility with automated SMT placement equipment and meets J-STD-002 solderability standards. The SMBG30A-E3/52 is not halogen-free (that would require "M3") nor AEC-Q101-qualified by suffix alone (requires "HE3" or "HM3"), though this specific part is AEC-Q101 qualified per Vishay documentation.
How does the SMBG30A-E3/52 compare to bidirectional TVS diodes like SMBG30CA?
The SMBG30A-E3/52 is unidirectional and features a cathode band for polarity-sensitive placement, whereas SMBG30CA is bidirectional with no polarity marking and symmetric clamping in both directions. Both share identical VWM (30 V), VBR, and VC ratings, but SMBG30A-E3/52 supports forward conduction (e.g., for DC bias line protection), while SMBG30CA is used where AC-coupled or differential signal lines require symmetrical surge suppression. The SMBG30A-E3/52 is not interchangeable with SMBG30CA without circuit review.
What is the thermal resistance of the SMBG30A-E3/52, and how does it affect layout?
The SMBG30A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces effective RθJA. For continuous surge duty or high ambient temperatures, designers should verify junction temperature stays below 150 °C using this RθJA and actual power dissipation. The SMBG30A-E3/52's thermal performance directly impacts sustained reliability in enclosed automotive or industrial housings.
SMBG30A-E3/52 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):
- 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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG30A-E3/52 FAQ
1.How can I place an order for SMBG30A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30A-E3/52 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 SMBG30A-E3/52 reliable?
The price and inventory of SMBG30A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG30A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG30A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30A-E3/52?
SMBG30A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30A-E3/52 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 SMBG30A-E3/52?
For technical support, including SMBG30A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30A-E3/52 requirements.
6.How does Aetrix verify that SMBG30A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG30A-E3/52 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 SMBG30A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG30A-E3/52?
All SMBG30A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30A-E3/52, 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 SMBG30A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG30A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30A-E3/52 Tags
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