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Vishay General Semiconductor - Diodes Division SMBJ7.0A-E3/5B
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- Part No.:
- SMBJ7.0A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0A-E3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,467
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Product details
Overview
SMBJ7.0A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used for I/O line protection in industrial sensor interfaces and automotive control modules.
For engineers reviewing the SMBJ7.0A-E3/5B datasheet, SMBJ7.0A-E3/5B pinout, SMBJ7.0A-E3/5B application, or SMBJ7.0A-E3/5B equivalent, key selection criteria include unidirectional polarity, 12.0 V clamping performance under 50 A surge, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device placed in parallel with protected circuitry. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping behavior across temperature. The unidirectional configuration provides forward conduction only during reverse overvoltage events, with cathode band marking for polarity identification.
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on minimum pad layout) and RθJL = 20 °C/W (junction-to-lead), supporting reliable operation up to TJ = +150 °C. It meets UL 497B recognition (QVGQ2) and is rated for repetitive 0.01% duty cycle pulses per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; ensures no leakage interference during normal signal operation. |
| VBR (Breakdown Voltage) | 7.78–8.60 V at 10 mA - Confirmed breakdown threshold range; defines onset of avalanche conduction under transient stress. |
| VC (Clamping Voltage) | 12.0 V at IPPM = 50.0 A - Peak voltage seen by protected circuit during worst-case 10/1000 µs surge; limits downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability for standardized 10/1000 µs waveform; validates robustness against common surge threats. |
| IPPM (Peak Pulse Current) | 50.0 A - Maximum non-repetitive surge current the device safely clamps without failure; derived from VC and PPPM. |
| TJmax | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.155" footprint; compatible with IPC-7351B land patterns and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional protection; conducts during reverse overvoltage to shunt surge current. |
| Cathode | Reverse-biased terminal | Connected to protected line (e.g., data bus, power input); avalanche breakdown initiates here when VWM is exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V supply rails without derating. |
| 12.0 V clamping at 50 A | Keeps protected ICs (e.g., CAN transceivers, microcontrollers) within safe absolute maximum ratings during transient events. |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement prior to reflow soldering; supports standard lead-free assembly processes. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current over temperature and lifetime, critical for automotive-grade reliability. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance requirements while maintaining cost-effective sourcing for high-volume industrial designs. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from ESD and load-dump induced transients in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output pin and ground to clamp reverse transients while preserving signal integrity. Use Value: Limits voltage excursion to ≤12.0 V during 50 A surges, preventing latch-up or damage to 3.3 V/5 V ADC inputs and op-amps. |
Use Scenario: Safeguarding LIN bus lines and switch inputs in body control units exposed to battery disconnect spikes and alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across LIN data line and chassis ground to absorb 12 V system-level transients. Use Value: Maintains 7.0 V nominal operation while clamping to 12.0 V - compatible with LIN physical layer voltage tolerances and EMC test margins. |
| Consumer USB Port ESD Protection | Telecom Power Input Stage |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 VBUS and D+/D− lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed after primary polymer fuse to handle ±15 kV contact discharge per IEC 61000-4-2. Use Value: Sub-100 ps response ensures clamping before ESD pulse couples into USB PHY; 12.0 V clamping avoids false overvoltage shutdown. |
Use Scenario: Front-end surge suppression on 48 V DC telecom power inputs subjected to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Primary TVS stage in multi-stage protection network, absorbing bulk energy before downstream MOVs or GDTs. Use Value: 600 W rating allows handling of 10/1000 µs surges up to 50 A without degradation; SMB package enables dense PCB layout near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package; same VWM, VBR, VC, and PPPM. | Required where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Select when halogen-free certification is contractually required; otherwise, E3 offers identical protection performance at lower cost. |
| SMBJ7.0CA-E3/5B | Bidirectional version with symmetric VBR (7.25 V max), same VC (12.0 V), but double ID limit (≤1.6 µA vs. ≤0.5 µA) for VWM ≤10 V devices. | Suitable for AC-coupled or differential signal lines (e.g., RS-485, CAN FD) requiring symmetrical clamping in both polarities. | Choose only for bidirectional signal paths; unidirectional SMBJ7.0A-E3/5B delivers superior leakage control and lower capacitance for DC-biased lines. |
Compared with SMBJ7.0A-M3/5B, the E3 variant offers standard RoHS compliance without halogen restrictions; compared with SMBJ7.0CA-E3/5B, the unidirectional version provides tighter leakage control and optimized clamping for grounded-signal applications - making SMBJ7.0A-E3/5B the preferred choice for 12 V DC power rail and single-ended I/O protection.
Availability
SMBJ7.0A-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interface protection, automotive BCM I/O hardening, and telecom power input surge suppression requiring stable component supply across production lifecycles.
Supply support for SMBJ7.0A-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 application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability are mission-critical.
FAQ
What is the clamping voltage of SMBJ7.0A-E3/5B at its rated peak pulse current?
The SMBJ7.0A-E3/5B has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 50.0 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions per JEDEC standards and ensures predictable voltage limiting during surge events. The SMBJ7.0A-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ7.0A-E3/5B suitable for automotive applications?
SMBJ7.0A-E3/5B is a commercial-grade part and not AEC-Q101 qualified; however, it is widely used in non-safety-critical automotive subsystems such as infotainment and body electronics where full qualification is not mandated. For AEC-Q101 compliance, the Vishay alternative SMBJ7.0AHE3_B/I (with HE3 suffix) must be selected. The SMBJ7.0A-E3/5B retains the same electrical characteristics and thermal ratings as its qualified counterparts.
How does the SMBJ7.0A-E3/5B differ from the SMBJ7.0CA-E3/5B?
The SMBJ7.0A-E3/5B is unidirectional, with polarity marked by a cathode band and optimized for DC-biased lines like power supplies and single-ended signals. In contrast, SMBJ7.0CA-E3/5B is bidirectional, offering symmetrical clamping for AC or differential signals such as RS-485 or CAN. Both share identical VC (12.0 V) and PPPM (600 W), but SMBJ7.0A-E3/5B exhibits lower reverse leakage (≤0.5 µA vs. ≤1.6 µA) at VWM.
What is the maximum operating temperature for SMBJ7.0A-E3/5B?
The SMBJ7.0A-E3/5B has a maximum junction temperature (TJmax) of +150 °C and an operating storage temperature range of -55 °C to +150 °C. Its thermal resistance values - RθJA = 100 °C/W (on minimum pad layout) and RθJL = 20 °C/W - enable reliable operation in enclosed industrial enclosures and under-hood automotive locations when mounted per recommended PCB pad dimensions.
Does SMBJ7.0A-E3/5B require special handling or baking before reflow soldering?
No - SMBJ7.0A-E3/5B is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This eliminates the need for moisture-sensitive device baking or dry-pack handling prior to standard lead-free reflow processes. The device's matte tin-plated leads ensure solderability per J-STD-002 and JESD 22-B102, and its UL 94 V-0 molding compound withstands repeated thermal cycling without delamination.
SMBJ7.0A-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):
- 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)
SMBJ7.0A-E3/5B FAQ
1.How can I place an order for SMBJ7.0A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0A-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 SMBJ7.0A-E3/5B reliable?
The price and inventory of SMBJ7.0A-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 SMBJ7.0A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ7.0A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0A-E3/5B?
SMBJ7.0A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0A-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 SMBJ7.0A-E3/5B?
For technical support, including SMBJ7.0A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0A-E3/5B requirements.
6.How does Aetrix verify that SMBJ7.0A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0A-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 SMBJ7.0A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ7.0A-E3/5B?
All SMBJ7.0A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0A-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 SMBJ7.0A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ7.0A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0A-E3/5B Tags
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