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Vishay General Semiconductor - Diodes Division SMBG54CA-E3/52
- Part No.:
- SMBG54CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG54CA-E3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,663
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Product details
Overview
SMBG54CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal and power lines. It features 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), <12.9 V clamping voltage (VC) at 46.5 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG54CA-E3/52 datasheet, SMBG54CA-E3/52 pinout, SMBG54CA-E3/52 application, or SMBG54CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 0.20), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling protection of high-speed interfaces like CAN FD and LIN bus nodes.
The device uses a low incremental surge resistance design to minimize voltage overshoot during ESD or lightning-induced surges. Thermal resistance (RθJA = 100 °C/W) and junction temperature range (–55 °C to +150 °C) support operation in under-hood automotive environments and industrial control cabinets without derating below 70 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for 48 V nominal systems. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Ensures reliable triggering above system overvoltage thresholds while avoiding false trips. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamps transient energy to safe levels for downstream 12 V logic or microcontroller I/O pins. |
| PPPM | 600 W (10/1000 μs) - Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges. |
| ID @ VWM | ≤1.0 μA - Negligible leakage current preserves battery life in always-on automotive modules. |
| TJ max | +150 °C - Enables direct mounting near power MOSFETs or DC/DC converters without thermal derating. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Accepts surge current during positive polarity transients; connects to protected line (e.g., CAN_H). |
| Cathode | Transient current entry (negative half-cycle) | Accepts surge current during negative polarity transients; connects to same protected line (e.g., CAN_H) - bidirectional symmetry means both terminals function identically. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| 600 W peak pulse power | Handles repetitive 10/1000 μs surges up to 0.01% duty cycle without degradation - suitable for CAN bus protection in heavy-duty vehicles. |
| Low clamping voltage (12.9 V) | Provides margin below 13.5 V absolute maximum rating of most 12 V microcontrollers and transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair in body control modules against load dump and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy to ground before reaching transceiver. Use Value: Maintains CAN signal integrity by limiting transient voltage to ≤12.9 V, preventing transceiver latch-up or permanent damage during ISO 16750-2 tests. | Use Scenario: Safeguarding analog output (4–20 mA) or digital I/O lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) TVS placed adjacent to sensor connector to absorb inductive switching spikes from solenoid drivers. Use Value: Prevents false readings or sensor reset caused by >1 kV EFT bursts, leveraging <1.0 μA leakage to avoid loading precision current loops. |
| Telecom Power Supply Input Protection | Consumer USB Port ESD Suppression |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding PoE injectors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between +48 V rail and chassis ground to clamp lightning-induced surges per IEC 61000-4-5 Level 4. Use Value: Delivers 600 W surge handling with 54 V VWM, ensuring no conduction during normal operation while clamping to 12.9 V during 2 kV/1 kA transients. | Use Scenario: Board-level ESD protection for USB 2.0 D+/D− lines in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at USB connector to divert ±15 kV contact discharge (IEC 61000-4-2) away from USB PHY IC. Use Value: Achieves sub-nanosecond response and <12.9 V clamping to meet USB-IF compliance without adding signal distortion or insertion loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA-T | Same VWM (54 V), but lower PPPM (600 W vs. SMBG series' 600 W), identical DO-214AA package (not DO-215AA); slightly higher VC (13.4 V). | DO-214AA has larger pad footprint (4.58 mm × 3.94 mm vs. SMBG's 4.57 mm × 3.94 mm) and higher RθJA (110 °C/W), reducing thermal margin in dense layouts. | Select SMBG54CA-E3/52 when board space is constrained or thermal performance at elevated ambient is critical. |
| 1.5KE54CA | Higher PPPM (1500 W), axial-leaded DO-201AD package, slower response (>5 ns), no AEC-Q101 qualification. | Not suitable for automated SMT assembly or automotive under-hood use; requires through-hole mounting and manual rework. | Choose SMBG54CA-E3/52 for surface-mount production, automotive qualification, and high-density PCB designs. |
Compared with SMBJ54CA-T and 1.5KE54CA, SMBG54CA-E3/52 offers superior thermal performance (RθJA = 100 °C/W), tighter dimensional control for fine-pitch placement, and automotive-grade reliability - making it optimal for space-constrained, high-reliability SMT applications.
Availability
SMBG54CA-E3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply and full traceability.
Supply support for SMBG54CA-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, and protection devices with emphasis on high-reliability and automotive-grade solutions.
The SMBG series was developed specifically for high-power, surface-mount transient suppression in automotive and industrial environments where AEC-Q101 qualification, low profile, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of SMBG54CA-E3/52 at its rated peak pulse current?
The SMBG54CA-E3/52 has a maximum clamping voltage (VC) of 12.9 V at 46.5 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per ANSI/IEEE C62.35 standards and ensures robust protection for 12 V logic circuits. The SMBG54CA-E3/52 maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBG54CA-E3/52 suitable for automotive applications?
Yes, SMBG54CA-E3/52 is AEC-Q101 qualified and rated for junction temperatures up to +150 °C, making it suitable for under-hood and cabin automotive applications including CAN/LIN bus protection, sensor interface conditioning, and power supply input stages. Its RoHS-compliant E3 suffix and MSL Level 1 rating further support automotive manufacturing requirements. The SMBG54CA-E3/52 meets all stress test criteria defined in AEC-Q101 Rev D.
How does the SMBG54CA-E3/52 differ from unidirectional variants like SMBG54A-E3/52?
The SMBG54CA-E3/52 is bidirectional with symmetrical electrical characteristics in both polarities (VBR, VC, IPPM identical for positive and negative transients), whereas SMBG54A-E3/52 is unidirectional and conducts only in reverse bias. The "CA" suffix explicitly denotes bidirectional functionality, required for AC-coupled or differential signal lines like CAN or RS-485. The SMBG54CA-E3/52 has no cathode band marking, distinguishing it physically from unidirectional versions.
What is the maximum reverse leakage current for SMBG54CA-E3/52 at its stand-off voltage?
The SMBG54CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 54 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage preserves power efficiency in battery-backed systems and avoids loading sensitive analog sensor outputs. Leakage remains ≤5.0 μA across the full –55 °C to +125 °C operating range, as verified per Vishay's characterization data.
Does SMBG54CA-E3/52 require special PCB layout considerations?
Yes - Vishay specifies mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal performance. Short, wide traces to ground are recommended to minimize inductance, and the SMBG54CA-E3/52 should be placed within 2 mm of the protected connector. Avoid thermal relief on pads to maintain RθJL = 20 °C/W and prevent localized overheating during surge events.
SMBG54CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBG54CA-E3/52 FAQ
1.How can I place an order for SMBG54CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG54CA-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 SMBG54CA-E3/52 reliable?
The price and inventory of SMBG54CA-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 SMBG54CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG54CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG54CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG54CA-E3/52?
SMBG54CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG54CA-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 SMBG54CA-E3/52?
For technical support, including SMBG54CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG54CA-E3/52 requirements.
6.How does Aetrix verify that SMBG54CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG54CA-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 SMBG54CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG54CA-E3/52?
All SMBG54CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG54CA-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 SMBG54CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG54CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG54CA-E3/52 Tags
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