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Vishay General Semiconductor - Diodes Division SMBJ5.0A-E3/52
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- Part No.:
- SMBJ5.0A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0A-E3/52.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:18,752
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Product details
Overview
SMBJ5.0A-E3/52 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 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. It protects MOSFET gates, microcontroller I/O, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ5.0A-E3/52 datasheet, SMBJ5.0A-E3/52 pinout, SMBJ5.0A-E3/52 application, or SMBJ5.0A-E3/52 equivalent, key selection criteria include its 5.0 V stand-off rating, 9.2 V clamping performance under 65.2 A surge, unidirectional polarity with cathode band marking, SMB (DO-214AA) package compatibility with automated SMT placement, and RoHS-compliant matte tin terminations.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 5.0 V and rapidly transitions to low-impedance conduction once reverse voltage exceeds VBR = 6.4–7.07 V. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<800 µA at VWM).
It delivers 600 W peak pulse power per 10/1000 µs waveform with <1 ps response time, low incremental surge resistance, and thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. The device meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line's nominal DC level. |
| VBR @ IT = 10 mA | 6.4–7.07 V - Breakdown onset range; ensures reliable triggering above system noise while avoiding false trips during transients. |
| VC @ IPPM = 65.2 A | 9.2 V - Clamped voltage during 600 W surge; defines maximum stress imposed on downstream ICs during ESD or load-switching events. |
| IPPM | 65.2 A - Peak pulse current supported under 10/1000 µs waveform; determines survivability against common industrial surge threats. |
| PPPM | 600 W - Peak pulse power rating; enables robust protection against repetitive transients up to 0.01% duty cycle without degradation. |
| Junction Temp Range | –55 °C to +150 °C - Wide operational envelope supporting use in automotive engine bays, industrial PLCs, and outdoor telecom equipment. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with 5.59 mm max length, compatible with IPC-7351B footprint and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with molded epoxy case meeting UL 94 V-0. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VBR. |
| Cathode | High-side connection point | Connected to protected line (e.g., 5 V rail); reverse-biased during normal operation; conducts surge current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) without derating on standard PCB layout. |
| Clamping ratio VC/VBR ≈ 1.33 | Minimizes voltage overshoot during clamping-critical for safeguarding 5 V logic interfaces with tight absolute maximum ratings. |
| Low leakage <800 µA at VWM | Prevents excessive quiescent current draw in battery-powered sensor nodes and always-on control circuits. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture sensitivity concerns or baking requirements. |
| RoHS-compliant matte tin terminations | Ensures solderability per J-STD-002/JESD22-B102 and eliminates post-assembly corrosion risks in humid environments. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) I/O Lines |
|---|---|
|
Use Scenario: Protecting 5 V auxiliary rails in programmable logic controllers (PLCs) against inductive kickback from relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5 V input and ground, clamping transients before they reach LDO regulators and MCU power pins. Use Value: Limits voltage excursion to ≤9.2 V during 65.2 A surges, preventing latch-up or permanent damage to 5.5 V-rated power management ICs. |
Use Scenario: Safeguarding LIN bus transceiver inputs and GPIOs in BCMs exposed to load-dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V sensor supply lines and microcontroller I/O pins, absorbing fast-rising transients from nearby motor actuation. Use Value: Maintains signal integrity by clamping within 1 ns, enabling reliable communication during 100 V/100 ms load-dump events per ISO 7637-2. |
| Consumer IoT Sensor Node Power Rail | Telecom Base Station DC Bias Lines |
|
Use Scenario: Securing 5 V power to MEMS accelerometers and environmental sensors in smart home hubs subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on regulated 5 V rail upstream of low-dropout regulators feeding analog front-end circuitry. Use Value: Delivers sub-10 V clamping at 65 A, preserving ADC reference stability and preventing digital reset caused by rail collapse. |
Use Scenario: Protecting bias networks feeding RF power amplifiers in 4G/5G remote radio units where 5 V control lines interface with high-voltage PA stages. IC Role / Device Role / Timing Role: Fast-response TVS on 5 V gate-control lines to prevent parasitic turn-on of GaN HEMTs during lightning-induced surges. Use Value: Withstands 600 W pulses without parameter shift, ensuring long-term reliability in outdoor base station enclosures with limited thermal mass. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | Required for halogen-free compliance in EU medical or aerospace programs; same thermal and clamping behavior. | Select when material declarations mandate halogen-free construction; no design or layout changes needed. |
| SMBJ5.0CA-E3/52 | Bidirectional version with symmetric 5.0 V stand-off and ±6.4–7.25 V breakdown; higher ID leakage (doubled per note 3). | Suitable for AC-coupled or differential signal lines (e.g., RS-485, CAN) where polarity reversal occurs. | Choose only for bidirectional protection needs; not interchangeable in unidirectional DC rail applications due to leakage and clamping asymmetry. |
Compared with SMBJ5.0A-E3/52, the M3 variant offers identical protection performance with halogen-free molding compound, while the CA variant supports AC signal paths but sacrifices DC leakage performance and cannot replace the unidirectional part in 5 V rail protection without circuit review.
Availability
SMBJ5.0A-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer IoT sensor nodes, and telecom DC bias networks requiring stable component supply and full traceability.
Supply support for SMBJ5.0A-E3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series targets board-level transient suppression in harsh environments, delivering high-power clamping in compact SMB packages for cost-sensitive yet mission-critical applications across industrial, automotive, and communications markets.
FAQ
What is the maximum clamping voltage of SMBJ5.0A-E3/52 under rated surge conditions?
The SMBJ5.0A-E3/52 exhibits a maximum clamping voltage (VC) 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 and defines the upper voltage limit imposed on protected circuitry during transient events. Designers must verify that downstream components tolerate this clamped voltage under worst-case surge scenarios.
Does SMBJ5.0A-E3/52 meet automotive qualification standards?
The base SMBJ5.0A-E3/52 is commercial-grade and not AEC-Q101 qualified. However, Vishay offers the automotive-grade variant SMBJ5.0AHE3_B/H, which carries the HE3 suffix and is explicitly qualified to AEC-Q101. Engineers requiring automotive deployment must specify the HE3 or HM3 version-not the E3/52-to ensure compliance with stress testing, lifetime reliability, and failure rate requirements defined in the AEC standard.
Can SMBJ5.0A-E3/52 be used to protect bidirectional signal lines like RS-485?
No-SMBJ5.0A-E3/52 is a unidirectional TVS diode intended for DC rail or single-polarity signal protection. For bidirectional interfaces such as RS-485, CAN, or USB data lines, the bidirectional SMBJ5.0CA-E3/52 must be used instead. Using SMBJ5.0A-E3/52 on AC-coupled lines risks forward conduction during negative half-cycles, leading to malfunction or damage. Always match device polarity to signal topology.
What is the thermal resistance of SMBJ5.0A-E3/52, and how does it affect layout?
The SMBJ5.0A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. Reducing pad size or omitting thermal vias increases RθJA, potentially causing premature thermal runaway during high-duty-cycle transients.
How does the leakage current of SMBJ5.0A-E3/52 impact low-power designs?
At its 5.0 V stand-off voltage (VWM), SMBJ5.0A-E3/52 specifies a maximum reverse leakage current (ID) of 800 µA. In battery-powered or energy-harvesting systems where quiescent current is critical, this leakage may contribute significantly to total system sleep current. Designers should measure actual leakage at operating temperature and consider lower-leakage alternatives (e.g., SMAJ5.0A) if sub-100 µA budgets are required.
SMBJ5.0A-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ5.0A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0A-E3/52 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 SMBJ5.0A-E3/52 reliable?
The price and inventory of SMBJ5.0A-E3/52 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-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ5.0A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0A-E3/52?
SMBJ5.0A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0A-E3/52 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 SMBJ5.0A-E3/52?
For technical support, including SMBJ5.0A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0A-E3/52 requirements.
6.How does Aetrix verify that SMBJ5.0A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0A-E3/52 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 SMBJ5.0A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ5.0A-E3/52?
All SMBJ5.0A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0A-E3/52, 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 SMBJ5.0A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ5.0A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0A-E3/52 Tags
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