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Vishay General Semiconductor - Diodes Division SMBG54A-E3/52
- Part No.:
- SMBG54A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG54A-E3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,272
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Product details
Overview
SMBG54A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 6.9 A peak pulse current (IPPM), and clamps transients to ≤87.1 V at rated surge. It is widely deployed in automotive power supply rails and industrial sensor interfaces where AEC-Q101 qualification and 600 W 10/1000 μs surge capability are required.
For engineers reviewing the SMBG54A-E3/52 datasheet, SMBG54A-E3/52 pinout, SMBG54A-E3/52 application, or SMBG54A-E3/52 equivalent, key selection criteria include unidirectional polarity, DO-215AA (SMBG) package compatibility, 150 °C max junction temperature, low leakage (<1.0 μA at VWM), and compliance with UL 497B and AEC-Q101 for automotive-grade reliability.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 % typical) and low incremental surge resistance, enabling fast response (<1 ns) and consistent clamping performance across temperature.
The SMBG54A-E3/52 is rated for 600 W peak pulse power (10/1000 μs waveform, 0.01 % duty cycle) on 5.0 mm × 5.0 mm copper pads, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation up to 150 °C junction temperature in high-reliability environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Ensures precise, repeatable avalanche turn-on within tight tolerance |
| VC @ IPPM | ≤87.1 V at 6.9 A - Clamping voltage limits downstream component stress during 10/1000 μs surges |
| IPPM | 6.9 A - Peak surge current handling capacity under standardized transient waveform |
| ID @ VWM | ≤1.0 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - Enables use in under-hood automotive and high-temperature industrial enclosures |
| Package | SMBG (DO-215AA) - Low-profile SMD footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leaded case with cathode band marking. Dimensions: 6.48 mm × 3.94 mm × 2.41 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference | Provides return path during clamping; must be routed with low-inductance grounding for effective surge shunting |
| Cathode | Current exit terminal in forward bias; marked by band, connected to protected line | Accepts transient energy from upstream line; polarity-sensitive placement prevents misapplication in unidirectional circuits |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring zero-failure reliability |
| 600 W peak pulse power (10/1000 μs) | Withstands repetitive lightning-induced surges and inductive switching spikes without degradation |
| Glass passivated junction | Ensures long-term parameter stability and resistance to moisture/humidity-induced drift |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning or special handling |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal-line protectors in certified end equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 54 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤87.1 V, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (CAN, LIN) in factory automation sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on signal line, referenced to local ground plane. Use Value: Sub-1 ns response and <1.0 μA leakage preserve signal fidelity while absorbing ±30 kV contact ESD (IEC 61000-4-2) without affecting baseline accuracy. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side protection on PoE-powered devices (e.g., IP cameras) against induced surges on Ethernet data pairs. IC Role / Device Role / Timing Role: Unidirectional TVS on each data line, oriented to clamp common-mode transients toward ground. Use Value: 600 W rating and 87.1 V clamping ensure compliance with IEC 61000-4-5 (Level 3, 1 kV/2 Ω) without compromising data integrity. | Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home hubs, guarding rectifier output against mains-borne transients. IC Role / Device Role / Timing Role: Stand-off-rated TVS across bulk capacitor terminals to absorb differential-mode surges. Use Value: 54 V VWM aligns with 42 V DC bus peaks; low thermal resistance (20 °C/W to lead) enables efficient heat dissipation during repeated surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/52 | Same VWM (54 V), identical SMB package, but lower PPPM (600 W vs. SMBJ's 600 W - same rating), slightly higher VC (88.0 V) | Functionally interchangeable in most PCB layouts; minor clamping voltage difference may affect margin-critical designs | Select SMBG54A-E3/52 when AEC-Q101 qualification and UL 497B recognition are mandatory; SMBJ54A-E3/52 suits cost-sensitive industrial use. |
| 1.5SMC54A | Same electrical specs (VWM, VBR, VC), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher RθJA (60 °C/W) | Requires board redesign due to larger footprint and different pad layout; better thermal mass for infrequent high-energy events | Choose 1.5SMC54A only if legacy SMC footprint exists or higher single-pulse energy handling is prioritized over space-constrained SMT placement. |
Compared with SMBJ54A-E3/52 and 1.5SMC54A, the SMBG54A-E3/52 uniquely combines AEC-Q101 qualification, UL 497B recognition, and DO-215AA's compact size-making it optimal for new automotive and space-limited industrial designs where regulatory compliance and miniaturization are co-primary requirements.
Availability
SMBG54A-E3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom infrastructure equipment requiring stable component supply, AEC-Q101 assurance, and RoHS-compliant manufacturing.
Supply support for SMBG54A-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, efficiency, and application-specific optimization.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in automotive and industrial systems, balancing low profile, AEC-Q101 compliance, and robust 600 W surge handling in the DO-215AA package.
FAQ
What is the maximum clamping voltage of SMBG54A-E3/52 at its rated peak pulse current?
The SMBG54A-E3/52 has a maximum clamping voltage (VC) of 87.1 V when subjected to its rated peak pulse current (IPPM) of 6.9 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for protected ICs and passive components downstream of SMBG54A-E3/52 in real-world surge events.
Is SMBG54A-E3/52 suitable for automotive applications?
Yes, SMBG54A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body electronics. Its construction meets UL 497B requirements, and its thermal and surge performance-validated across -55 °C to +150 °C-is documented for load dump, ISO 7637-2, and IEC 61000-4-5 compliance testing. The SMBG54A-E3/52 is designed for direct integration into automotive power distribution and sensor interface modules.
What does the "-E3/52" suffix indicate in SMBG54A-E3/52?
The "-E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "/52" specifies packaging in 7″ diameter plastic tape and reel with a base quantity of 750 units. This configuration ensures compatibility with high-speed pick-and-place equipment and supports standard SMT assembly processes without requiring special handling or preconditioning for MSL Level 1 reflow.
How does SMBG54A-E3/52 differ from bidirectional TVS diodes like SMBG54CA?
SMBG54A-E3/52 is unidirectional and features a cathode band for polarity-sensitive placement, whereas SMBG54CA is bidirectional with no polarity marking and symmetric breakdown in both directions. The SMBG54A-E3/52 offers lower leakage (<1.0 μA) and is intended for DC-biased lines (e.g., power rails), while SMBG54CA suits AC or floating signal paths. Their VBR and VC values also differ due to internal structure-SMBG54A-E3/52 cannot substitute for SMBG54CA without circuit review.
What is the thermal resistance of SMBG54A-E3/52, and how does it impact layout design?
SMBG54A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. To maintain safe operation below 150 °C junction temperature during repetitive surges, PCB layout must provide adequate copper area and thermal vias-especially under the leads-to leverage the low RθJL and avoid localized overheating of SMBG54A-E3/52.
SMBG54A-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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- 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)
SMBG54A-E3/52 FAQ
1.How can I place an order for SMBG54A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG54A-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 SMBG54A-E3/52 reliable?
The price and inventory of SMBG54A-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 SMBG54A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG54A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG54A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG54A-E3/52?
SMBG54A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG54A-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 SMBG54A-E3/52?
For technical support, including SMBG54A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG54A-E3/52 requirements.
6.How does Aetrix verify that SMBG54A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG54A-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 SMBG54A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG54A-E3/52?
All SMBG54A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG54A-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 SMBG54A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG54A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG54A-E3/52 Tags
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