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Vishay General Semiconductor - Diodes Division SMBJ7.0CA-M3/5B
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- Part No.:
- SMBJ7.0CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CA-M3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,910
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Product details
Overview
SMBJ7.0CA-M3/5B 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), 6.4–7.25 V breakdown voltage (VBR) at 10 mA test current, and clamps to ≤12.0 V at 50.0 A peak pulse current (IPPM) under 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ7.0CA-M3/5B datasheet, SMBJ7.0CA-M3/5B pinout, SMBJ7.0CA-M3/5B application, or SMBJ7.0CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, 600 W peak pulse power rating, low clamping ratio (VC/VWM ≈ 1.71), MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per base P/N-M3 suffix.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical avalanche breakdown in both polarities. Its glass-passivated junction enables fast response (<1 ps), low incremental surge resistance, and stable clamping across -55 °C to +150 °C operating range.
Designed for transient immunity per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it delivers 600 W peak pulse power (10/1000 µs) with 0.01% duty cycle, and supports repetitive surge events when thermally managed via its 100 °C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse working voltage before conduction begins; sets upper limit for normal circuit operation. |
| VBR min/max | 6.4 V / 7.25 V at IT = 10 mA - guaranteed breakdown onset window; ensures reliable triggering during overvoltage events. |
| VC @ IPPM | 12.0 V at 50.0 A (10/1000 µs) - clamped voltage seen by protected circuit; determines residual stress on downstream components. |
| PPPM | 600 W - peak transient energy absorption capacity; defines survivability against lightning-induced surges or inductive switching spikes. |
| IPPM | 50.0 A - maximum non-repetitive surge current the device can shunt without failure; directly tied to PCB pad thermal design. |
| Junction Temp | -55 °C to +150 °C - operational envelope compatible with automotive under-hood and industrial control environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; optimized for automated placement. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | Enables clamping during positive- or negative-going transients without external polarity orientation. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Eliminates need for directional placement on PCB; simplifies layout for differential or AC-coupled lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Provides symmetrical protection on AC lines, data buses, or ungrounded interfaces without polarity constraints. |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive or IEC 61000-4-5 surge events in industrial systems. |
| Low clamping voltage (12.0 V) | Minimizes stress on 5 V or 3.3 V logic rails during ESD/EFT events, preserving system-level reliability. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing production complexity. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protecting gate drivers and microcontroller I/O from inductive kickback during relay or solenoid switching. IC Role / Device Role: Bidirectional TVS placed across MOSFET gate-source or MCU GPIO pins. Use Value: Clamps transients to ≤12.0 V, preventing latch-up or oxide damage in 5 V-tolerant logic interfaces. |
Use Scenario: Shielding LIN bus transceivers and sensor inputs from load dump and jump-start surges. IC Role / Device Role: Primary line-side transient suppressor on 12 V supply rail and bidirectional data lines. Use Value: Withstands 600 W pulses while maintaining VWM = 7.0 V compatibility with 5 V logic domains. |
| Telecom Power Supply Inputs | Consumer IoT Sensor Nodes |
|
Use Scenario: Safeguarding AC/DC adapter secondary-side outputs against lightning-induced surges on PoE or wall-adapter feeds. IC Role / Device Role: Secondary-side TVS on 5 V or 12 V DC output rails upstream of LDOs or DC-DC converters. Use Value: Limits clamped voltage to 12.0 V, ensuring safe operation of downstream 5 V regulators and PMICs. |
Use Scenario: Guarding I²C/SPI lines and battery monitor inputs in smart home sensors exposed to ESD during handling. IC Role / Device Role: Localized TVS at connector or IC pin, placed within 2 mm of protected node. Use Value: Sub-1 ns response time and 12.0 V clamping prevent data corruption or reset glitches in 3.3 V microcontrollers. |
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-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3). | Preferred for commercial-grade designs where halogen content is unrestricted. | Select SMBJ7.0CA-E3/5B if halogen-free requirement is not mandated by regional regulations or OEM policy. |
| SMAJ7.0CA | Lower peak pulse power (400 W vs 600 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Suitable only for lower-energy transients or space-constrained layouts where thermal margin allows. | Choose SMAJ7.0CA only when board area is critical and surge threat level is limited to IEC 61000-4-2 Level 3 (±8 kV contact). |
Compared with SMBJ7.0CA-E3/5B, the SMBJ7.0CA-M3/5B adds halogen-free compliance without sacrificing performance; versus SMAJ7.0CA, it delivers 50% higher surge robustness and better thermal dissipation in the same functional role.
Availability
SMBJ7.0CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMBJ7.0CA-M3/5B 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in harsh environments, delivering robust 600 W clamping performance in compact SMB packages for automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of SMBJ7.0CA-M3/5B at its rated peak pulse current?
The SMBJ7.0CA-M3/5B clamps to a maximum of 12.0 V at 50.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects the actual voltage imposed on protected circuitry during worst-case surge events - a critical parameter for ensuring downstream 5 V logic remains within safe operating limits. The SMBJ7.0CA-M3/5B achieves this with minimal voltage overshoot due to its low incremental surge resistance.
Is SMBJ7.0CA-M3/5B suitable for automotive applications?
SMBJ7.0CA-M3/5B is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; the M3 suffix alone denotes halogen-free commercial grade. For automotive use, specify SMBJ7.0CA-HM3_B/I or equivalent AEC-Q101 variant. The SMBJ7.0CA-M3/5B itself meets all electrical and mechanical specs required for body electronics, but formal qualification requires the HM3 automotive prefix - confirming reliability under temperature cycling, humidity, and vibration stress.
How does the bidirectional configuration of SMBJ7.0CA-M3/5B affect PCB layout?
The SMBJ7.0CA-M3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or ungrounded sensor interfaces where voltage polarity may reverse. Unlike unidirectional TVS diodes, the SMBJ7.0CA-M3/5B avoids risk of incorrect installation - a direct benefit for high-volume automated assembly and field-service replacement.
What is the thermal resistance of SMBJ7.0CA-M3/5B, and how does it impact power derating?
The SMBJ7.0CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. At ambient temperatures above 25 °C, its 5.0 W steady-state power dissipation must be linearly derated - e.g., to ~3.5 W at 75 °C ambient. This derating ensures junction temperature stays below 150 °C during sustained leakage or repeated low-energy transients, preserving long-term reliability of the SMBJ7.0CA-M3/5B.
Does SMBJ7.0CA-M3/5B meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ7.0CA-M3/5B meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This allows direct placement into standard lead-free soldering profiles without baking or dry-packaging - reducing manufacturing overhead and avoiding moisture-related popcorning failures. The SMBJ7.0CA-M3/5B's epoxy molding compound and matte tin terminations are fully compatible with IPC-A-610 Class 2 and Class 3 assembly standards.
SMBJ7.0CA-M3/5B 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-M3/5B FAQ
1.How can I place an order for SMBJ7.0CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CA-M3/5B 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-M3/5B reliable?
The price and inventory of SMBJ7.0CA-M3/5B 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-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CA-M3/5B?
SMBJ7.0CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CA-M3/5B 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-M3/5B?
For technical support, including SMBJ7.0CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ7.0CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CA-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CA-M3/5B?
All SMBJ7.0CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CA-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ7.0CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CA-M3/5B 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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