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Vishay General Semiconductor - Diodes Division SMBJ7.0CA-M3/52
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- Part No.:
- SMBJ7.0CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CA-M3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,516
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Product details
Overview
SMBJ7.0CA-M3/52 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 and 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 - deployed in sensor interface protection for industrial automation and telecom equipment.
For engineers reviewing the SMBJ7.0CA-M3/52 datasheet, SMBJ7.0CA-M3/52 pinout, SMBJ7.0CA-M3/52 application, or SMBJ7.0CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, 12.0 V maximum clamping voltage at rated surge current, low incremental surge resistance, and halogen-free RoHS-compliant construction per M3 suffix.
Technical Context
This TVS diode operates symmetrically in both directions, with breakdown voltage (VBR) specified as 7.78 V min / 8.60 V max at 10 mA test current. Its bidirectional architecture eliminates polarity concerns in AC-coupled or differential signal paths, enabling use across ungrounded or floating bus lines.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C. The device meets J-STD-020 MSL Level 1 and withstands 260 °C lead-free reflow, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
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 10 mA - ensures reliable turn-on above normal signal swing |
| VC @ IPPM | 12.0 V at 50.0 A - limits transient voltage seen by downstream ICs during 10/1000 µs surge |
| PPPM | 600 W - handles high-energy transients such as IEC 61000-4-5 Level 3 surges |
| ID @ VWM | 200 µA - low leakage preserves signal integrity in high-impedance sensor interfaces |
| Package | SMB (DO-214AA) - 0.205" × 0.130" footprint compatible with automated SMT placement |
| Construction | Halogen-free, RoHS-compliant - satisfies environmental compliance for global industrial shipments |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking. Cathode/anode designation does not apply - terminals are functionally identical for transient suppression in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Common connection point for transient energy diversion to ground or rail |
| Terminal 2 | Anode/Cathode (bidirectional) | Second connection point; forms symmetrical clamping path across protected line |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity constraints |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 50 A - sufficient for IEC 61000-4-5 open-circuit voltage testing at 2 kV |
| Low clamping voltage (12.0 V) | Protects 5 V and 3.3 V logic interfaces by limiting transient overshoot below IC absolute maximum ratings |
| MSL Level 1 rating | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak |
| Halogen-free M3 suffix | Meets IPC-4101D/21 and JEDEC J-STD-020 requirements for environmentally restricted applications |
Applications
| Industrial Sensor Interface Protection | Telecom Line Surge Suppression |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O of PLC modules from inductive switching transients and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ±1 kV transients before reaching ADC or isolator inputs. Use Value: Prevents latch-up or permanent damage to precision op-amps and microcontrollers by limiting voltage excursion to ≤12.0 V. | Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Paired TVS devices across differential pairs (A/B) and common-mode line-to-ground to absorb common- and differential-mode energy. Use Value: Maintains signal integrity under IEC 61000-4-5 Level 3 (2 kV) tests while preserving <10 pF junction capacitance at zero bias. |
| Automotive Body Control Module Inputs | Consumer Appliance Motor Drive Feedback Lines |
Use Scenario: Safeguarding LIN bus receivers and switch inputs in BCMs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element on each input pin, referenced to chassis ground, sized for 12 V nominal systems. Use Value: Ensures functional safety compliance (ISO 26262 ASIL-B readiness) by preventing false triggering or destruction during 100 V/50 ms load dump events. | Use Scenario: Protecting hall-effect sensor outputs and encoder feedback lines in BLDC motor controllers inside washing machines and HVAC units. IC Role / Device Role / Timing Role: Low-leakage (200 µA) TVS placed directly at connector entry to suppress commutation spikes from nearby motor windings. Use Value: Eliminates intermittent position errors caused by transient-induced noise on 5 V analog feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA-E3/52 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (not halogen-free) | Acceptable where halogen-free requirement is not mandated (e.g., non-EU commercial products) | Select when cost sensitivity outweighs halogen-free compliance needs |
| SMAJ7.0CA-M3 | Lower PPPM (400 W), higher VC (13.3 V at 30 A), SMA package (smaller footprint, lower thermal mass) | Suitable only for lower-energy transients; less robust in high-surge industrial environments | Choose only if board space is constrained and surge threat level is limited to IEC 61000-4-4 EFT only |
Compared with SMBJ7.0CA-M3/52, the E3 variant offers identical protection performance with relaxed environmental compliance, while the SMAJ7.0CA-M3 trades surge robustness and thermal margin for compactness - making SMBJ7.0CA-M3/52 optimal for high-reliability 600 W surge handling in SMB-layout-constrained designs.
Availability
SMBJ7.0CA-M3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and consumer appliance motor feedback circuits requiring stable component supply and halogen-free compliance.
Supply support for SMBJ7.0CA-M3/52 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where robustness against ESD, EFT, and surge events is critical.
FAQ
What is the clamping voltage of SMBJ7.0CA-M3/52 at its rated peak pulse current?
The SMBJ7.0CA-M3/52 clamps to a maximum of 12.0 V at 50.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 12.0 V during surge events - critical for safeguarding 5 V and 3.3 V logic interfaces. The SMBJ7.0CA-M3/52 achieves this with low incremental surge resistance and fast response time.
Is SMBJ7.0CA-M3/52 suitable for bidirectional signal lines like RS-485?
Yes, SMBJ7.0CA-M3/52 is explicitly designed for bidirectional applications, as indicated by the "CA" suffix. Its symmetrical breakdown behavior (VBR min/max applies identically in both directions) makes it ideal for protecting differential buses such as RS-485, CAN, or USB data lines without polarity concerns. The SMBJ7.0CA-M3/52 maintains consistent clamping performance regardless of transient polarity, simplifying layout and reducing component count.
Does SMBJ7.0CA-M3/52 meet automotive qualification standards?
The base SMBJ7.0CA-M3/52 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers automotive variants under ordering codes SMBJ7.0CAHM3_X (halogen-free, AEC-Q101 qualified). For designs requiring automotive qualification, SMBJ7.0CA-M3/52 must be replaced with the HM3_X version - the SMBJ7.0CA-M3/52 itself supports industrial temperature range (−55 °C to +150 °C) but lacks formal automotive stress-test validation.
What is the maximum reverse leakage current for SMBJ7.0CA-M3/52 at its stand-off voltage?
At its 7.0 V stand-off voltage (VWM), the SMBJ7.0CA-M3/52 exhibits a maximum reverse leakage current (ID) of 200 µA at TA = 25 °C. This low leakage preserves signal fidelity in high-impedance sensor circuits and minimizes power loss in battery-operated systems. The SMBJ7.0CA-M3/52 maintains this specification across its full operating temperature range, with derating applied above 25 °C per the datasheet's thermal curves.
How does the M3 suffix affect the environmental compliance of SMBJ7.0CA-M3/52?
The M3 suffix on SMBJ7.0CA-M3/52 denotes halogen-free, RoHS-compliant construction - meaning brominated and chlorinated flame retardants are excluded from the molding compound, satisfying IPC-4101D/21 and EU RoHS Directive 2011/65/EU Annex II. Unlike the E3 variant, SMBJ7.0CA-M3/52 meets strict environmental mandates for export to regulated markets. The SMBJ7.0CA-M3/52 also passes JESD 201 Class 2 whisker testing and complies with JEDEC J-STD-020 MSL Level 1.
SMBJ7.0CA-M3/52 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:
- -
- 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-M3/52 FAQ
1.How can I place an order for SMBJ7.0CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CA-M3/52 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 SMBJ7.0CA-M3/52 reliable?
The price and inventory of SMBJ7.0CA-M3/52 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-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CA-M3/52?
SMBJ7.0CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CA-M3/52 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 SMBJ7.0CA-M3/52?
For technical support, including SMBJ7.0CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ7.0CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CA-M3/52 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 SMBJ7.0CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CA-M3/52?
All SMBJ7.0CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CA-M3/52, 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 SMBJ7.0CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.0CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CA-M3/52 Tags
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