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Vishay General Semiconductor - Diodes Division SMBJ7.0CA-E3/5B
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- Part No.:
- SMBJ7.0CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CA-E3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,645
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Product details
Overview
SMBJ7.0CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), and clamps to ≤12.0 V at 50.0 A peak pulse current - ideal for protecting I/O ports and sensor interfaces in industrial control systems.
For engineers reviewing the SMBJ7.0CA-E3/5B datasheet, SMBJ7.0CA-E3/5B pinout, SMBJ7.0CA-E3/5B application, or SMBJ7.0CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under surge, JEDEC-compliant SMB package footprint, and RoHS-compliant commercial-grade construction with MSL Level 1 rating.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 7.78–8.60 V (min/max) at 10 mA test current. Its clamping behavior follows IEEE C62.35 standards, delivering consistent protection against ESD, lightning-induced surges, and inductive switching transients without polarity sensitivity.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C. The device exhibits <1.0 μA reverse leakage at VWM and a temperature coefficient of VBR at +0.065 %/°C - enabling stable transient suppression across extended ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 7.78 V / 8.60 V at IT = 10 mA - ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 12.0 V at 50.0 A - limits downstream voltage stress during 10/1000 μs surge events |
| PPPM | 600 W - sustains high-energy transients without failure per JEDEC standard waveform |
| ID @ VWM | <1.0 μA - negligible standby power loss and minimal signal line loading |
| TJ max. | +150 °C - supports operation in harsh industrial or automotive under-hood environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.0 mm × 5.0 mm copper pad thermal design |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts surge current toward cathode during positive overvoltage event |
| Cathode | Transient current entry (negative half-cycle) | Conducts surge current toward anode during negative overvoltage event; symmetrical bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Handles high-energy transients from inductive load switching (e.g., solenoid drivers) without degradation |
| Low clamping voltage (12.0 V @ 50 A) | Keeps protected ICs (e.g., RS-485 transceivers, microcontroller GPIO) safely below absolute maximum ratings |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and cycle time |
| RoHS-compliant, matte tin terminations | Ensures compatibility with lead-free assembly processes and long-term solder joint reliability |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., 4–20 mA current loop, thermistor voltage dividers) from ESD and load dump coupling in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point, shunting transients before reaching precision ADC or op-amp front-end. Use Value: Prevents sensor offset drift or latch-up caused by sub-100 ns ESD events while maintaining signal integrity below 1 μA leakage. |
Use Scenario: Safeguarding LIN bus transceiver pins and switch inputs in door module ECUs exposed to battery voltage transients and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary transient suppressor on low-speed communication and discrete input lines, operating alongside ceramic decoupling caps. Use Value: Clamps 12 V system surges to ≤12.0 V, ensuring transceiver survival during jump-start or alternator load dump without requiring additional series impedance. |
| Consumer Appliance Motor Drive Feedback | Telecom Power Supply Input Stage |
Use Scenario: Shielding hall-effect rotor position feedback signals in BLDC motor controllers inside washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to MCU GPIO pins reading commutation timing, minimizing PCB trace inductance path to ground. Use Value: Limits induced spikes from nearby motor windings to safe levels (<12.0 V), preventing false zero-crossing detection or firmware reset. |
Use Scenario: Secondary-side transient suppression on 48 V DC telecom power distribution boards handling hot-swap and backplane insertion events. IC Role / Device Role / Timing Role: Standoff-rated protector on intermediate rail monitoring lines, coordinated with upstream MOVs and primary-side TVS. Use Value: Provides precise 7.0 V clamping margin above nominal 5 V or 3.3 V logic rails, avoiding false undervoltage lockout during fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No difference in circuit function or layout; selected where halogen-free compliance is mandated | Choose when environmental compliance requires halogen-free materials without altering design or BOM |
| SMAJ7.0CA-E3/5B | Lower 400 W PPPM rating, same VWM/VBR/VC, but in smaller SMA (DO-214AC) package | Reduced surge energy handling; suitable only for lower-risk signal-line applications | Select only if board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 3 (±8 kV contact) |
Compared with SMBJ7.0CA-E3/5B, the M3 variant offers identical protection performance with halogen-free construction, while the SMAJ7.0CA-E3/5B trades 33 % peak power capacity for 30 % smaller footprint - making the SMBJ version optimal for robust industrial or automotive surge immunity where PCB real estate permits.
Availability
SMBJ7.0CA-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interface protection, automotive body control modules, consumer appliance motor feedback circuits, and telecom power supply input stages requiring stable component supply and full RoHS compliance.
Supply support for SMBJ7.0CA-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, power efficiency, and automotive qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting industrial automation, automotive electronics, and telecom infrastructure where repeatable clamping performance and JEDEC-compliant packaging are critical.
FAQ
What does the "CA" suffix indicate in SMBJ7.0CA-E3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ7.0CA-E3/5B provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. Unlike unidirectional variants (e.g., SMBJ7.0A), it has no cathode band marking and functions identically in either orientation on the PCB.
Is SMBJ7.0CA-E3/5B suitable for automotive applications?
SMBJ7.0CA-E3/5B is RoHS-compliant commercial-grade; however, Vishay offers AEC-Q101-qualified versions under ordering codes like SMBJ7.0CAHE3_B/I. For production automotive use, the HE3/HM3 variants must be selected - SMBJ7.0CA-E3/5B itself is not qualified to AEC-Q101 but remains widely used in non-safety-critical aftermarket or industrial-automotive hybrid systems.
What is the maximum clamping voltage of SMBJ7.0CA-E3/5B under surge conditions?
The SMBJ7.0CA-E3/5B clamps to a maximum of 12.0 V when subjected to its rated 50.0 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is guaranteed across temperature and production lot, ensuring downstream components remain within safe operating voltage margins.
How does SMBJ7.0CA-E3/5B differ from SMBJ7.0A-E3/5B?
SMBJ7.0CA-E3/5B is bidirectional with symmetrical VBR and VC characteristics in both directions, while SMBJ7.0A-E3/5B is unidirectional - featuring a cathode band and conducting only in reverse bias. The "A" version also supports 100 A IFSM forward surge rating; the "CA" version does not specify IFSM since it lacks polarity-defined conduction direction.
What PCB pad layout is recommended for optimal thermal performance of SMBJ7.0CA-E3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMBJ7.0CA-E3/5B to achieve the rated RθJA of 100 °C/W. Using smaller pads increases junction temperature rise during surge events and may reduce long-term reliability - especially in high-repetition-rate transient environments.
SMBJ7.0CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7.0CA-E3/5B FAQ
1.How can I place an order for SMBJ7.0CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CA-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 SMBJ7.0CA-E3/5B reliable?
The price and inventory of SMBJ7.0CA-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 SMBJ7.0CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CA-E3/5B?
SMBJ7.0CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CA-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 SMBJ7.0CA-E3/5B?
For technical support, including SMBJ7.0CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ7.0CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CA-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 SMBJ7.0CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CA-E3/5B?
All SMBJ7.0CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CA-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 SMBJ7.0CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ7.0CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CA-E3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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