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Vishay General Semiconductor - Diodes Division SMBJ54CAHE3_B/H
- Part No.:
- SMBJ54CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CAHE3_B/H.pdf
- Description:
- 600W,54V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
SMBJ54CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range (VBR at 1 mA), 600 W peak pulse power (10/1000 µs), clamping voltage of 87.1 V at 6.9 A, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the SMBJ54CAHE3_B/H datasheet, SMBJ54CAHE3_B/H pinout, SMBJ54CAHE3_B/H application, or SMBJ54CAHE3_B/H equivalent, this device is selected for high-reliability transient suppression on DC power rails, bidirectional signal lines, and automotive-grade sensor interfaces where low clamping ratio, fast response (<1 ns), and AEC-Q101 qualification are critical.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced transients.
The device complies with ANSI/IEEE C62.35 standards for transient suppressors and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow compatibility. Its thermal resistance (RθJA = 100 °C/W) supports operation up to 150 °C junction temperature when mounted per recommended 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on under surge conditions. |
| VC @ IPPM | 87.1 V at 6.9 A - Clamped voltage during 600 W transient; determines maximum stress imposed on protected circuitry. |
| PPPM | 600 W (10/1000 µs waveform) - Peak surge power handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 6.9 A - Peak pulse current corresponding to 600 W clamping; used for PCB trace sizing and fuse coordination. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical PN junction; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Anode | Terminal B | Second terminal of bidirectional structure; connects to complementary line (e.g., CAN_L or RS-485 B) or ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in differential or AC-coupled signal paths. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors - supports long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse rating | Handles IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source) without degradation - reduces need for secondary protection stages. |
| Low clamping ratio (VC/VBR) | ~1.45 - Minimizes voltage overshoot during transients, preserving margin for downstream ICs rated ≤ 100 V. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - enables direct placement without baking or dry-pack handling. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting ABS wheel speed sensor outputs exposed to load dump and ISO 7637-2 pulses in vehicle chassis wiring. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed across differential pair (e.g., VR sensor output) to limit voltage excursions to <87.1 V. Use Value: Prevents latch-up or gate oxide damage in downstream signal conditioners while maintaining signal integrity through low capacitance (<100 pF at 0 V). |
Use Scenario: Safeguarding RS-485 transceivers (e.g., SN65HVD230) against EFT bursts and surge events in factory automation networks. IC Role / Device Role / Timing Role: Placed between A/B bus lines and ground to shunt common-mode transients without affecting DC bias or data eye. Use Value: Enables compliance with IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-5 (1 kV surge) without adding series impedance or timing skew. |
| Consumer USB Power Line | Telecom DSL Line Protection |
|
Use Scenario: Overvoltage protection on 5 V USB VBUS lines subjected to hot-plug inrush and accidental 12 V misconnection. IC Role / Device Role / Timing Role: Bidirectional clamp between VBUS and GND to clamp both positive and negative excursions beyond ±54 V. Use Value: Survives repeated 600 W transients while maintaining <1 µA leakage at 5 V - avoids standby current drain in battery-powered devices. |
Use Scenario: Primary protection stage for ADSL/VDSL line drivers interfacing with outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Mounted across tip/ring pair to absorb longitudinal mode surges before reaching transformer-coupled front-end. Use Value: Withstands 10/1000 µs surges up to 600 W while exhibiting <0.1 %/°C VBR drift - ensures stable protection across outdoor temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA-E3/52 | Same electrical specs and SMB package; RoHS-compliant commercial grade without AEC-Q101 qualification. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC-Q101 validation. | Select SMBJ54CAHE3_B/H when automotive qualification, extended temperature operation, or long-term supply continuity are required. |
| SMCJ54CAHE3_A/H | Higher 1500 W peak pulse power rating in larger SMC (DO-214AB) package; same VWM, VBR, and bidirectional function. | Used where higher surge energy absorption is needed (e.g., power input stages), but requires larger PCB area and different layout. | Choose SMBJ54CAHE3_B/H for space-constrained layouts needing 600 W protection; select SMCJ54CAHE3_A/H only if >1000 W surge immunity is mandated. |
Compared with SMBJ54CA-E3/52, SMBJ54CAHE3_B/H adds AEC-Q101 qualification and extended lifetime reliability for automotive use; compared with SMCJ54CAHE3_A/H, it trades surge capacity for compact SMB footprint-making it optimal for board-level signal and interface protection where space and weight are constrained.
Availability
SMBJ54CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB power circuits, and telecom line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ54CAHE3_B/H 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 SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and communications systems-delivering consistent clamping performance and robust surge endurance in standardized surface-mount packages.
FAQ
What is the clamping voltage of SMBJ54CAHE3_B/H at its rated peak pulse current?
The SMBJ54CAHE3_B/H clamps to a maximum of 87.1 V at its peak pulse current of 6.9 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event. The SMBJ54CAHE3_B/H maintains this clamping performance across its full operating temperature range, making it suitable for demanding environments where voltage margin is critical.
Is SMBJ54CAHE3_B/H suitable for automotive applications?
Yes, SMBJ54CAHE3_B/H is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity rating, and guaranteed operation from –55 °C to +150 °C. The SMBJ54CAHE3_B/H also meets JESD201 Class 2 whisker resistance requirements, ensuring long-term solder joint reliability in thermally cycled automotive systems.
How does the bidirectional design of SMBJ54CAHE3_B/H affect its circuit implementation?
The bidirectional design of SMBJ54CAHE3_B/H means it functions identically in both polarities-no cathode marking is present, and it provides symmetrical clamping on differential or AC-coupled signals. This eliminates orientation errors during assembly and simplifies protection of balanced interfaces like RS-485, CAN, or Ethernet PHY lines. Unlike unidirectional TVS diodes, the SMBJ54CAHE3_B/H does not require grounding one terminal; instead, it is placed directly across the protected nodes (e.g., A–B or tip–ring), delivering matched response regardless of surge polarity.
What is the maximum leakage current of SMBJ54CAHE3_B/H at its standoff voltage?
The SMBJ54CAHE3_B/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 54 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal impact on standby power consumption in battery-operated or energy-sensitive systems. The SMBJ54CAHE3_B/H maintains leakage below 5 µA even at elevated temperatures up to 85 °C, supporting reliable operation in thermally demanding applications without compromising system efficiency.
Does SMBJ54CAHE3_B/H require derating at elevated ambient temperatures?
Yes, SMBJ54CAHE3_B/H must be derated above 25 °C ambient temperature per Figure 2 in the Vishay datasheet (Document Number: 88392). Its peak pulse power capability decreases linearly with rising junction temperature, reaching ~50 % of rated 600 W at 100 °C ambient when mounted on standard 0.2" × 0.2" copper pads. Designers must apply thermal modeling or consult the derating curve to ensure the SMBJ54CAHE3_B/H remains within safe operating limits under worst-case thermal conditions.
SMBJ54CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ54CAHE3_B/H FAQ
1.How can I place an order for SMBJ54CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CAHE3_B/H 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 SMBJ54CAHE3_B/H reliable?
The price and inventory of SMBJ54CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ54CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CAHE3_B/H?
SMBJ54CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CAHE3_B/H 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 SMBJ54CAHE3_B/H?
For technical support, including SMBJ54CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ54CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54CAHE3_B/H 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 SMBJ54CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ54CAHE3_B/H?
All SMBJ54CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CAHE3_B/H, 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 SMBJ54CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ54CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CAHE3_B/H Tags
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