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Vishay General Semiconductor - Diodes Division SMBJ54CAHE3/5B
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- Part No.:
- SMBJ54CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CAHE3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,464
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Product details
Overview
SMBJ54CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 54 V standoff voltage (VWM), 600 W peak pulse power (10/1000 µs), and clamps to ≤87.1 V at 6.9 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ54CAHE3/5B datasheet, SMBJ54CAHE3/5B pinout, SMBJ54CAHE3/5B application, or SMBJ54CAHE3/5B equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance data, junction capacitance behavior, and real-world ESD/lightning transient suppression use cases - all confirmed from Vishay's official 88392 document (Rev. 09-Jan-2024).
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified at 60.0–66.3 V (min/max) under 1 mA test current. Its low incremental surge resistance enables fast clamping response (<1 ns), while the glass-passivated junction ensures stable performance across -55 °C to +150 °C operating range.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and carries AEC-Q101 qualification for automotive-grade reliability - confirmed by Vishay's HE3 suffix designation and ordering code structure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 60.0–66.3 V at IT = 1 mA - precise voltage threshold where avalanche conduction initiates reliably |
| VC (Clamping Voltage) | ≤87.1 V at IPPM = 6.9 A (10/1000 µs) - limits transient voltage seen by downstream ICs during surge events |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capability for standardized lightning/inductive-spike waveforms without failure |
| RθJA (Thermal Resistance) | 100 °C/W - junction-to-ambient thermal impedance on standard 0.2" × 0.2" copper pads; critical for thermal derating above 25 °C |
| Junction Temperature Range | -55 °C to +150 °C - validated operating envelope for harsh environments including automotive under-hood and industrial controls |
| AEC-Q101 Qualified | Yes - certified for automotive applications per Vishay's HE3 suffix; supports mission-critical reliability requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded UL 94 V-0 compound; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band not marked (bidirectional polarity).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals; bidirectional operation means either terminal serves as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| Fast response time (<1 ns) | Clamps transients before sensitive logic or analog circuitry sustains damage |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| MSL Level 1 rating | Supports single-reflow assembly without moisture-induced popcorning; no baking required pre-assembly |
| AEC-Q101 qualification | Validates suitability for automotive subsystems requiring zero-defect reliability and extended temperature operation |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
|
Use Scenario: Protecting RS-485 transceivers and analog sensor outputs (e.g., 4–20 mA loops) from inductive switching noise and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching interface IC. Use Value: Maintains signal integrity by limiting voltage excursions to ≤87.1 V during 6.9 A surges, preventing latch-up or permanent damage to transceiver inputs. |
Use Scenario: Safeguarding Ethernet PHY ports and DSL line drivers against lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary transient suppressor on differential pair lines, coordinated with common-mode chokes for full-spectrum immunity. Use Value: Withstands repetitive 600 W pulses without parameter shift, enabling compliance with GR-1089-CORE telecom surge standards. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
|
Use Scenario: Shielding LIN bus nodes and window lift motor drivers from load-dump and jump-start transients in 12 V systems. IC Role / Device Role / Timing Role: Secondary-level TVS mounted near microcontroller GPIOs and driver ICs to absorb residual spikes after primary protection. Use Value: AEC-Q101 qualification ensures operational reliability over 15-year vehicle lifetime, even at +125 °C ambient. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback before it couples into control logic. Use Value: 600 W rating handles repeated 8.3 ms half-sine surges up to 100 A (IFSM), extending MCU lifespan in high-cycle appliances. |
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-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected when halogen-free material compliance is mandated by OEM spec | Choose SMBJ54CAHE3/5B for standard RoHS; choose SMBJ54CA-M3/5B only if halogen-free requirement applies |
| SMAJ54CAHE3/A | Lower 400 W PPPM; SMA (DO-214AC) package with smaller footprint and higher RθJA (150 °C/W) | Reduced surge handling; suitable only for lower-energy transients or space-constrained PCBs where 600 W is not required | Select SMBJ54CAHE3/5B when full 600 W capability and thermal margin are needed; SMAJ54CAHE3/A is a downgraded alternative |
Compared with SMBJ54CA-M3/5B, SMBJ54CAHE3/5B offers identical protection performance with standard RoHS compliance; versus SMAJ54CAHE3/A, it delivers 50 % higher surge power handling and 33 % better thermal dissipation - critical for industrial and automotive deployments subject to repetitive transients.
Availability
SMBJ54CAHE3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply, AEC-Q101 traceability, and long-lifecycle support.
Supply support for SMBJ54CAHE3/5B 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMBJ series was engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial automation, and telecom infrastructure where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix mean in SMBJ54CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ54CAHE3/5B conducts and clamps symmetrically for both positive and negative transients. Unlike unidirectional variants (e.g., SMBJ54A), it has no polarity marking and provides identical VBR, VC, and IPPM in either direction, making it ideal for AC-coupled or differential signal lines where polarity reversal may occur.
Is SMBJ54CAHE3/5B qualified for automotive use?
Yes, SMBJ54CAHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and Vishay's official documentation (Document 88392). This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating SMBJ54CAHE3/5B for under-hood and chassis-mounted automotive electronics.
What is the clamping voltage of SMBJ54CAHE3/5B at its rated surge current?
SMBJ54CAHE3/5B clamps to a maximum of 87.1 V at its peak pulse current (IPPM) of 6.9 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of SMBJ54CAHE3/5B compare thermally to SMA (DO-214AC)?
The SMB package used in SMBJ54CAHE3/5B delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads - 33 % lower than the 150 °C/W typical for SMA-packaged equivalents like SMAJ54CAHE3/A. This improved thermal performance allows SMBJ54CAHE3/5B to sustain higher surge repetition rates and operate reliably at elevated ambient temperatures.
Does SMBJ54CAHE3/5B require special PCB layout considerations?
Yes - to achieve rated 600 W pulse power and thermal performance, SMBJ54CAHE3/5B must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay Document 88392. Reduced pad area increases RθJA, derating both power handling and surge current capability; routing traces directly from pads without necking preserves low-inductance transient paths.
SMBJ54CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 (SMBJ)
SMBJ54CAHE3/5B FAQ
1.How can I place an order for SMBJ54CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CAHE3/5B 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 SMBJ54CAHE3/5B reliable?
The price and inventory of SMBJ54CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ54CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CAHE3/5B?
SMBJ54CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CAHE3/5B 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 SMBJ54CAHE3/5B?
For technical support, including SMBJ54CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ54CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ54CAHE3/5B 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 SMBJ54CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ54CAHE3/5B?
All SMBJ54CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CAHE3/5B, 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 SMBJ54CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ54CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CAHE3/5B Tags
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