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Vishay General Semiconductor - Diodes Division SMBJ5.0A-E3/5B
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- Part No.:
- SMBJ5.0A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0A-E3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:193,345
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Product details
Overview
SMBJ5.0A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 5.0 V stand-off voltage (VWM), 6.4–7.07 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 9.2 V at 65.2 A, and operates across –55 °C to +150 °C junction temperature range - deployed on power rails and signal lines of industrial sensor interfaces.
For engineers reviewing the SMBJ5.0A-E3/5B datasheet, SMBJ5.0A-E3/5B pinout, SMBJ5.0A-E3/5B application, or SMBJ5.0A-E3/5B equivalent, this page delivers verified electrical parameters, thermal behavior under surge conditions, RoHS-compliant commercial-grade packaging details, and real-world protection use cases for consumer, telecom, and automotive-qualified derivative variants.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its low incremental surge resistance (Rdyn) ensures stable clamping during repetitive 10/1000 µs surges at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W enabling reliable operation on standard 5.0 mm × 5.0 mm copper pads.
The device complies with ANSI/IEEE C62.35 surge standards and meets J-STD-020 MSL Level 1 moisture sensitivity. Polarity is marked by a cathode band; it supports automated placement and withstands 260 °C lead-free reflow per JEDEC specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 5.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown Voltage) | 6.4–7.07 V at 10 mA - guaranteed conduction onset threshold for overvoltage triggering |
| VC (Clamping Voltage) | 9.2 V at IPPM = 65.2 A - peak voltage seen by protected circuit during 600 W transient |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs waveform) - surge energy handling capacity without degradation |
| IFSM (Surge Current) | 100 A (8.3 ms half-sine) - unidirectional forward surge rating for inductive load switching events |
| TJ max. | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance defining derating requirements for PCB pad layout design |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL Level 1, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; enables conduction when cathode exceeds anode by ≥VBR |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential rail or signal line; initiates clamping when transient exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without failure |
| 9.2 V clamping at 65.2 A | Limits downstream IC stress to safe levels during 600 W transients on 5 V logic or power rails |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR performance under thermal cycling and humidity exposure |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free assembly without popcorn cracking or delamination risk |
| Low profile SMB package (4.57 mm × 3.94 mm) | Minimizes PCB footprint while maintaining thermal dissipation capability on standard copper pads |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Power Rail |
|---|---|
|
Use Scenario: Protecting 5 V analog sensor outputs (e.g., temperature, pressure) from inductive kickback in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before they reach ESD-sensitive front-end circuitry. Use Value: Prevents latch-up or permanent damage to 12-bit ADCs during 100 V/µs transients induced by solenoid switching nearby. |
Use Scenario: Safeguarding 5 V supply rail feeding microcontrollers and CAN transceivers in non-safety-critical BCM subassemblies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 5 V distribution net, activated within <1 ps to limit surge propagation to downstream loads. Use Value: Maintains system uptime by absorbing 600 W load-dump spikes without requiring fuse replacement or board-level redesign. |
| Telecom Ethernet PHY Port Protection | Consumer USB-C Power Delivery Line |
|
Use Scenario: Shielding 5 V bias lines powering PoE-powered devices (e.g., IP cameras) from lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual energy before it reaches PHY IC's internal LDOs. Use Value: Reduces failure rate of Ethernet PHYs by limiting clamped voltage to ≤9.2 V during 10/1000 µs surges exceeding 1 kV. |
Use Scenario: Guarding 5 V VBUS line in USB-C receptacles against ESD events (>8 kV contact) and hot-plug transients during adapter insertion. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp on VBUS path, coordinated with upstream eFuse to prevent overcurrent during clamping conduction. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (±8 kV contact) while preserving 5 V regulation integrity for connected peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Choose when halogen-free certification is required; same thermal and surge performance as SMBJ5.0A-E3/5B |
| SMBJ5.0CA-E3/5B | Bidirectional version with symmetric 6.4–7.25 V VBR, same VC = 9.2 V, but no polarity marking | Used where AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) require symmetrical clamping | Select only for bidirectional protection needs; not interchangeable without circuit review due to polarity and conduction behavior |
Compared with SMBJ5.0A-M3/5B, the SMBJ5.0A-E3/5B offers identical surge protection performance but targets commercial RoHS compliance without halogen restrictions; versus SMBJ5.0CA-E3/5B, it provides dedicated unidirectional clamping essential for DC power rails where reverse conduction must be blocked.
Availability
SMBJ5.0A-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom Ethernet PHY ports, and consumer USB-C power delivery systems requiring stable component supply and full traceability.
Supply support for SMBJ5.0A-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, MOSFETs, and protection devices with emphasis on reliability, precision, and high-power handling.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and communications infrastructure where repeatable 600 W surge immunity is critical.
FAQ
What is the clamping voltage of SMBJ5.0A-E3/5B at its rated peak pulse current?
The SMBJ5.0A-E3/5B has a maximum clamping voltage (VC) of 9.2 V at its specified peak pulse current (IPPM) of 65.2 A, measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuits during worst-case transient events and is confirmed in Vishay's Document Number 88392, Table on page 2. The SMBJ5.0A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ5.0A-E3/5B suitable for automotive applications?
The base SMBJ5.0A-E3/5B is a commercial-grade, RoHS-compliant part and is not AEC-Q101 qualified. However, Vishay offers the automotive-qualified variant SMBJ5.0AHE3_B/H (with HE3 suffix), which shares identical electrical characteristics but undergoes additional stress testing per AEC-Q101. For automotive designs requiring qualification, SMBJ5.0A-E3/5B must be replaced with its HE3 or HM3 counterpart - the SMBJ5.0A-E3/5B itself is intended for industrial and consumer use.
What does the "E3/5B" suffix mean in SMBJ5.0A-E3/5B?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5B" denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This ordering code aligns with Vishay's standardized nomenclature in Document Number 88392, page 3, and confirms the part's compliance status, plating, and logistics configuration - distinct from M3 (halogen-free) or HE3 (AEC-Q101) variants.
How does SMBJ5.0A-E3/5B compare to SMAJ5.0A in terms of surge capability?
The SMBJ5.0A-E3/5B delivers 600 W peak pulse power, whereas the SMAJ5.0A (in smaller SMA/DO-214AC package) is rated for 400 W under the same 10/1000 µs waveform. This 50% higher power rating stems from the SMBJ's larger SMB (DO-214AA) package, which provides superior thermal mass and lower RθJA (100 °C/W vs. ~130 °C/W for SMAJ). As a result, the SMBJ5.0A-E3/5B sustains higher surge currents without thermal runaway - making it preferred for high-energy industrial transients.
Can SMBJ5.0A-E3/5B be used in bidirectional signal protection?
No - SMBJ5.0A-E3/5B is strictly unidirectional, with a cathode band marking and asymmetric conduction behavior. For bidirectional protection (e.g., on RS-485 or CAN lines), the SMBJ5.0CA-E3/5B variant must be used. That part exhibits matched breakdown in both directions (6.4–7.25 V) and lacks polarity marking. Substituting SMBJ5.0A-E3/5B in a bidirectional application risks reverse conduction failure or inadequate clamping during negative transients.
SMBJ5.0A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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 (SMBJ)
SMBJ5.0A-E3/5B FAQ
1.How can I place an order for SMBJ5.0A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0A-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 SMBJ5.0A-E3/5B reliable?
The price and inventory of SMBJ5.0A-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 SMBJ5.0A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0A-E3/5B?
SMBJ5.0A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0A-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 SMBJ5.0A-E3/5B?
For technical support, including SMBJ5.0A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0A-E3/5B requirements.
6.How does Aetrix verify that SMBJ5.0A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0A-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 SMBJ5.0A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0A-E3/5B?
All SMBJ5.0A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0A-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 SMBJ5.0A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0A-E3/5B Tags
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