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Vishay General Semiconductor - Diodes Division SMBG54A-E3/5B
- Part No.:
- SMBG54A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG54A-E3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,744
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Product details
Overview
SMBG54A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), 87.1 V maximum clamping voltage (VC) at 6.9 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG54A-E3/5B datasheet, SMBG54A-E3/5B pinout, SMBG54A-E3/5B application, or SMBG54A-E3/5B equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, thermal resistance (RθJA = 100 °C/W), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM = 54 V and rapidly transitions to low-impedance conduction above VBR = 60.0–66.3 V to divert transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the DO-215AA package supports 100 A IFSM (8.3 ms half-sine) for robustness against repetitive switching surges.
The device is rated for TJ = –55 °C to +150 °C operation, meets UL 497B recognition (QVGQ2), and is optimized for fast response time and low incremental surge resistance - critical for protecting MOSFET gates, sensor interfaces, and automotive ECUs from inductive load switching transients.
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 reliable turn-on within defined tolerance band for predictable protection threshold |
| VC @ IPPM | 87.1 V at 6.9 A - Clamping voltage during 600 W 10/1000 μs surge; limits downstream voltage stress |
| PPPM | 600 W - Peak pulse power handling capability per standard waveform; defines surge energy absorption capacity |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports high-energy inrush events |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; compatible with standard reflow profiles up to 260 °C peak |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line's ground or low-side reference; completes clamping loop during transient |
| Cathode | Reverse-biased terminal / Clamping node | Connected to protected line (e.g., 54 V rail); conducts when transient exceeds VBR, shunting energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a-level transients in 12 V automotive systems |
| AEC-Q101 qualified | Validated for automotive electronics use including engine control, body modules, and ADAS sensors |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage drift across temperature and lifetime |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal-line protectors without additional certification |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V/54 V battery-supplied ECUs from load-dump and inductive switching transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and chassis ground to clamp transients exceeding 54 V. Use Value: Limits peak voltage to ≤87.1 V during 600 W surges, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at sensor output connector to absorb EFT bursts and lightning-induced surges. Use Value: Maintains signal integrity by clamping transients within 1 ns response time while adding <1.0 μA leakage at 54 V operating point. |
| Telecom DC Power Feeds | Consumer Device USB Power Input |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, access points) from surges on 48–57 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on midspan or endpoint PSE/PD power input stage. Use Value: Withstands repeated 10/1000 μs surges up to 600 W and maintains VC ≤87.1 V, ensuring compliance with IEC 61000-4-5 Level 3. | Use Scenario: Secondary protection on USB-C PD input circuits where 54 V may appear during non-standard adapter faults or hot-plug events. IC Role / Device Role / Timing Role: Standoff-rated TVS upstream of buck converter to prevent overvoltage failure during abnormal charging conditions. Use Value: Provides precise 54 V hold-off with 60.0–66.3 V VBR window, avoiding nuisance tripping while enabling fast clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/5B | Same VWM/VBR/VC specs but in SMB (DO-214AA) package; RθJA = 110 °C/W vs. 100 °C/W | Slightly lower power derating at elevated ambient; less suitable for high-density automotive PCBs requiring tighter thermal margins | Select SMBG54A-E3/5B when board space allows DO-215AA and thermal performance is critical |
| 1.5SMC54A | Same electrical specs but in larger SMC (DO-214AB) package; higher IPPM (7.2 A) and VC (88.5 V); RθJA = 75 °C/W | Better thermal dissipation but requires ~2.5× more board area; not RoHS-compliant in base version | Choose 1.5SMC54A only if layout permits larger footprint and higher surge margin is prioritized over size and compliance |
Compared with SMBJ54A-E3/5B and 1.5SMC54A, SMBG54A-E3/5B delivers optimal balance of AEC-Q101 qualification, MSL Level 1 compatibility, compact DO-215AA footprint, and superior thermal resistance - making it preferred for space-constrained, thermally demanding automotive and industrial designs.
Availability
SMBG54A-E3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power feeds, and consumer USB-C PD input protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG54A-E3/5B 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, TVS, MOSFETs, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBG series was developed for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 validation, low-profile packaging, and precise clamping characteristics for next-generation power system protection.
FAQ
What is the clamping voltage of SMBG54A-E3/5B at its rated peak pulse current?
The SMBG54A-E3/5B has a maximum clamping voltage (VC) of 87.1 V at its peak pulse current (IPPM) of 6.9 A, measured using the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a 600 W transient event and is critical for ensuring downstream components remain within safe operating voltage ranges. The SMBG54A-E3/5B achieves this clamping performance while maintaining low incremental surge resistance.
Is SMBG54A-E3/5B suitable for automotive applications?
Yes, SMBG54A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its operating junction temperature range of –55 °C to +150 °C, MSL Level 1 rating, and UL 497B recognition support deployment in harsh under-hood and cabin environments. The SMBG54A-E3/5B also meets requirements for load-dump and inductive switching transient protection per ISO 7637-2.
What does the "E3/5B" suffix indicate in SMBG54A-E3/5B?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "5B" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This format ensures compatibility with high-speed automated pick-and-place equipment and supports large-volume manufacturing. The SMBG54A-E3/5B is not AEC-Q101 qualified in this variant - for automotive-grade versions, the HE3 or HM3 suffix must be selected.
How does SMBG54A-E3/5B differ from bidirectional TVS diodes like SMBG54CA?
SMBG54A-E3/5B is unidirectional and features a cathode band marking; it conducts only in reverse bias above VBR, making it ideal for DC rail protection. In contrast, SMBG54CA is bidirectional with symmetrical clamping in both polarities and no polarity marking, suited for AC or differential signal lines. The SMBG54A-E3/5B offers lower leakage (<1.0 μA at 54 V) versus SMBG54CA's typical 5.0 μA, and its VBR min/max (60.0–66.3 V) applies only in reverse direction.
What is the thermal resistance of SMBG54A-E3/5B, and how does it affect layout design?
The SMBG54A-E3/5B 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 guides PCB layout: adequate copper area and thermal vias are required to maintain TJ ≤150 °C during repetitive surges. Compared to larger packages like SMC, the SMBG's lower RθJA enables higher power density, but thermal relief must still follow Vishay's recommended pad dimensions shown in the DO-215AA outline drawing.
SMBG54A-E3/5B 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-E3/5B FAQ
1.How can I place an order for SMBG54A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG54A-E3/5B 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-E3/5B reliable?
The price and inventory of SMBG54A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG54A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG54A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG54A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG54A-E3/5B?
SMBG54A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG54A-E3/5B 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-E3/5B?
For technical support, including SMBG54A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG54A-E3/5B requirements.
6.How does Aetrix verify that SMBG54A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG54A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG54A-E3/5B?
All SMBG54A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG54A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBG54A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG54A-E3/5B Tags
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