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Vishay General Semiconductor - Diodes Division SMBJ5.0-E3/5B
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- Part No.:
- SMBJ5.0-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0-E3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,113
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Product details
Overview
SMBJ5.0-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. 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), and clamps transients to ≤9.2 V at 65.2 A peak surge current - deployed in power supply inputs of industrial sensors and automotive ECUs.
For engineers reviewing the SMBJ5.0-E3/5B datasheet, SMBJ5.0-E3/5B pinout, SMBJ5.0-E3/5B application, or SMBJ5.0-E3/5B equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package compatibility with automated SMT assembly, low clamping voltage under surge, and AEC-Q101 qualification path via HE3 suffix variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches rapidly (<1 ns response) to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<800 µA at VWM) and robust surge handling up to 100 A IFSM (8.3 ms half-sine).
Thermal design relies on its RθJA of 100 °C/W and RθJL of 20 °C/W; derating is required above TA = 25 °C per Fig. 2, with maximum junction temperature limited to +150 °C. The device meets MSL Level 1 (260 °C reflow peak) and UL 497B recognition for telecom and industrial protectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 6.4 V / 7.07 V at IT = 10 mA - Confirmed avalanche onset range; ensures reliable triggering without premature breakdown. |
| VC @ IPPM | ≤9.2 V at 65.2 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy ESD and load-switching transients. |
| ID @ VWM | ≤800 µA - Reverse leakage at rated stand-off; critical for low-power sensor bias networks and battery-backed systems. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline; compatible with IPC-7351B footprint and J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); 0.2" × 0.2" copper pad layout recommended per datasheet Fig. 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes shunt path during transient events. |
| Cathode | Reverse-biased terminal / Protection node | Connected to protected line (e.g., 5 V rail input); avalanche conduction initiates here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5 V lines without failure. |
| Clamping voltage ≤9.2 V at 65.2 A | Keeps downstream 5 V logic ICs (e.g., microcontrollers, CAN transceivers) within absolute maximum ratings during surge. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage across temperature and humidity stress cycles. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without popcorn cracking or parameter shift. |
| RoHS-compliant, halogen-free option available | Meets IPC-1752A material declaration requirements for EU and Asian OEM programs. |
Applications
| Industrial Sensor Power Input | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 5 V power rail feeding MEMS pressure sensors in factory automation PLCs exposed to relay coil flyback and motor drive noise. IC Role / Device Role: Primary shunt TVS placed directly at connector entry point before LDO regulator. Use Value: Limits induced transients to <9.2 V, preventing latch-up or gate oxide damage in 5 V analog front-end ICs. |
Use Scenario: 5 V supply line to LIN transceiver and microcontroller in door module subjected to ISO 7637-2 Pulse 1/2a/5a. IC Role / Device Role: First-line transient clamp on fused 5 V bus, upstream of local decoupling. Use Value: Absorbs 100 A surge peaks without degradation, maintaining system reset integrity during load dump events. |
| USB-C Power Delivery Interface | Telecom DSL Line Card Protection |
Use Scenario: VBUS line protection in USB-C receptacle circuits where 5 V nominal supply must survive hot-plug ESD and cable discharge. IC Role / Device Role: Unidirectional TVS between VBUS and GND, sized to meet IEC 61000-4-2 ±15 kV contact discharge. Use Value: Sub-1 ns response and <9.2 V clamping prevent damage to USB PD controller and port power switches. |
Use Scenario: Protection of 5 V bias supply feeding ADSL line drivers in central office equipment exposed to lightning-induced surges. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), clamping residual energy. Use Value: 600 W rating handles coupled energy from GDT let-through, ensuring no thermal runaway at 60 Hz duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 compliance is mandated (e.g., Japanese OEMs). | Direct substitution if halogen-free materials are required; same thermal and surge performance. |
| SMBJ5.0CA-E3/5B | Bidirectional version with symmetric VBR (6.4–7.25 V), same VWM (5.0 V), and identical PPPM (600 W). | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN FD differential pairs). | Use only when bidirectional clamping is needed; not interchangeable with SMBJ5.0-E3/5B in unidirectional DC rails. |
Compared with SMBJ5.0A-M3/5B, SMBJ5.0-E3/5B offers standard RoHS compliance without halogen restrictions; compared with SMBJ5.0CA-E3/5B, it provides optimized unidirectional clamping for DC power rails, avoiding unnecessary capacitance and leakage in single-polarity paths.
Availability
SMBJ5.0-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom power supply protection requiring stable component supply and full traceability.
Supply support for SMBJ5.0-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-volume manufacturability.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where surge immunity and long-term parametric stability are mission-critical.
FAQ
What is the maximum clamping voltage of SMBJ5.0-E3/5B under a 10/1000 µs surge?
The SMBJ5.0-E3/5B clamps to a maximum of 9.2 V when subjected to its rated peak pulse current of 65.2 A using the standardized 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMBJ5.0-E3/5B suitable for automotive applications?
SMBJ5.0-E3/5B itself is commercial-grade (E3 suffix), but Vishay offers the AEC-Q101-qualified variant SMBJ5.0AHE3_B/H. For automotive use, specify the HE3 or HM3 suffix versions - they share identical electrical characteristics and SMB package but undergo extended stress testing per AEC-Q101. SMBJ5.0-E3/5B may be used in non-safety-critical aftermarket modules where qualification is not mandated.
What does the "/5B" suffix indicate in SMBJ5.0-E3/5B?
The "/5B" suffix denotes the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-speed pick-and-place assembly and is distinct from the "/52" variant (7-inch reel, 750 units). Both share identical electrical and thermal specifications - only the delivery mode differs.
How does SMBJ5.0-E3/5B differ from SMAJ5.0A?
SMBJ5.0-E3/5B uses the larger SMB (DO-214AA) package with higher surge capability (600 W PPPM), while SMAJ5.0A uses the smaller SMA (DO-214AC) package rated for 400 W. The SMBJ5.0-E3/5B offers lower clamping impedance and better thermal dissipation due to its larger copper pad area and lower RθJL (20 °C/W vs. ~30 °C/W for SMAJ), making it preferred for high-reliability or high-energy applications.
Can SMBJ5.0-E3/5B be used in bidirectional signal protection?
No - SMBJ5.0-E3/5B is strictly unidirectional, with cathode marked by a band. For bidirectional protection (e.g., RS-485, CAN, audio lines), use the CA-suffixed variant SMBJ5.0CA-E3/5B, which has symmetrical breakdown in both directions and identical 600 W rating. Using SMBJ5.0-E3/5B on AC signals risks forward conduction and failure during negative half-cycles.
SMBJ5.0-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 62.5A
- 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)
SMBJ5.0-E3/5B FAQ
1.How can I place an order for SMBJ5.0-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0-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 SMBJ5.0-E3/5B reliable?
The price and inventory of SMBJ5.0-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 SMBJ5.0-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0-E3/5B?
SMBJ5.0-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0-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 SMBJ5.0-E3/5B?
For technical support, including SMBJ5.0-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0-E3/5B requirements.
6.How does Aetrix verify that SMBJ5.0-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0-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 SMBJ5.0-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0-E3/5B?
All SMBJ5.0-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0-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 SMBJ5.0-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0-E3/5B Tags
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