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Vishay General Semiconductor - Diodes Division SMBG54CAHE3/52
- Part No.:
- SMBG54CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG54CAHE3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,358
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Product details
Overview
SMBG54CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 87.1 V at 6.9 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG54CAHE3/52 datasheet, SMBG54CAHE3/52 pinout, SMBG54CAHE3/52 application, or SMBG54CAHE3/52 equivalent, this device is selected for high-energy surge suppression in automotive sensor interfaces, industrial I/O lines, and bidirectional signal line protection where low clamping ratio, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance under repetitive transients.
The device uses a planar junction structure housed in an SMBG (DO-215AA) thermally optimized package with RθJA = 100 °C/W and RθJL = 20 °C/W, enabling effective heat dissipation during 600 W surge events. It meets JESD201 Class 2 whisker resistance and UL 497B recognition for telecom and automotive protector applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V automotive systems. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on during ESD/EFT events. |
| VC @ IPPM | 87.1 V at 6.9 A - Clamped voltage during 600 W surge (10/1000 µs); limits downstream IC stress to <90 V. |
| PPPM | 600 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV) surge testing. |
| ID @ VWM | <1.0 µA - Ultra-low leakage ensures minimal standby power loss and signal integrity on high-impedance lines. |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical bidirectional junction; connects to protected line without polarity constraint. |
| Cathode | Terminal K | Other side of symmetrical bidirectional junction; functionally identical to Anode in CA-series devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN, LIN, RS-485) without external polarity management. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source impedance) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients, protecting 75 V-rated components downstream. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring long-term field stability. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial Fieldbus Interface |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤87.1 V, preserving 12-bit ADC accuracy and preventing latch-up in 5 V or 3.3 V signal chains. |
Use Scenario: Guarding RS-485 transceiver pins (A/B) against ESD and lightning-induced surges in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Primary board-level TVS on differential bus lines, mounted adjacent to connector entry point. Use Value: Maintains signal integrity below 100 V clamping while supporting >500 kbps data rates due to low junction capacitance (~200 pF at 0 V). |
| Telecom Line Interface | Consumer Power Adapter Feedback Loop |
Use Scenario: Safeguarding Ethernet PHY magnetics center taps and PoE detection circuitry from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy post-GDT conduction. Use Value: Provides sub-nanosecond response to complement slower GDTs, reducing let-through voltage to <90 V during 10/1000 µs surges. |
Use Scenario: Suppressing flyback spikes on optocoupler feedback lines in isolated AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Clamp placed across secondary-side error amplifier output to prevent overvoltage damage to TL431 or shunt regulator. Use Value: Enables compact layout with no series impedance needed-direct parallel placement preserves loop stability and regulation accuracy. |
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 | Same VWM (54 V), identical VBR and VC, but rated for 600 W with different thermal derating curve and non-AEC-Q101 qualification. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC compliance is not mandated. | Select SMBJ54CA when cost optimization is prioritized and automotive qualification is unnecessary. |
| SMCJ54CA | Higher PPPM (1500 W), same VWM/VBR, larger SMC (DO-214AB) package with higher thermal mass and lower RθJA (50 °C/W). | Better suited for high-repetition surge environments (e.g., motor drive I/O) but requires larger PCB area. | Choose SMCJ54CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 or thermal cycling demands exceed SMBG limits. |
Compared with SMBG54CAHE3/52, SMBJ54CA offers identical electrical protection but lacks AEC-Q101 validation and has less stringent MSL handling, while SMCJ54CA delivers superior surge endurance at the expense of footprint size and assembly compatibility with fine-pitch layouts.
Availability
SMBG54CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial fieldbus nodes, telecom infrastructure equipment, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for SMBG54CAHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG series was developed for high-reliability surface-mount surge protection in space-constrained automotive and industrial systems, combining AEC-Q101 qualification with industry-standard DO-215AA packaging.
FAQ
What is the polarity configuration of SMBG54CAHE3/52?
SMBG54CAHE3/52 is a bidirectional TVS diode with symmetrical clamping characteristics in both directions. Unlike unidirectional variants, it carries no cathode band marking and functions identically regardless of terminal orientation-ideal for AC-coupled or differential signal paths where polarity cannot be guaranteed.
Does SMBG54CAHE3/52 meet automotive qualification standards?
Yes, SMBG54CAHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88456, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive powertrain, chassis, and body electronics.
What is the maximum clamping voltage of SMBG54CAHE3/52 under surge conditions?
The maximum clamping voltage (VC) of SMBG54CAHE3/52 is 87.1 V at 6.9 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining in protected circuits.
Can SMBG54CAHE3/52 be used in lead-free reflow processes?
Yes, SMBG54CAHE3/52 meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102, enabling direct integration into standard lead-free assembly lines without pre-baking or special handling.
How does SMBG54CAHE3/52 differ from the unidirectional SMBG54AHE3/52?
SMBG54CAHE3/52 is bidirectional with symmetrical VBR and VC in both polarities, while SMBG54AHE3/52 is unidirectional with cathode marking and conducts only in reverse bias. The "CA" suffix explicitly denotes bidirectional functionality, making SMBG54CAHE3/52 appropriate for AC signal lines and differential buses where polarity reversal occurs.
SMBG54CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG54CAHE3/52 FAQ
1.How can I place an order for SMBG54CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG54CAHE3/52 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 SMBG54CAHE3/52 reliable?
The price and inventory of SMBG54CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG54CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG54CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG54CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG54CAHE3/52?
SMBG54CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG54CAHE3/52 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 SMBG54CAHE3/52?
For technical support, including SMBG54CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG54CAHE3/52 requirements.
6.How does Aetrix verify that SMBG54CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG54CAHE3/52 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 SMBG54CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG54CAHE3/52?
All SMBG54CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG54CAHE3/52, 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 SMBG54CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG54CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG54CAHE3/52 Tags
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