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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHM3_A/I
- Part No.:
- SMBJ7.0CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHM3_A/I.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ7.0CAHM3_A/I 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), 12.0 V maximum clamping voltage at 50.0 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ7.0CAHM3_A/I datasheet, SMBJ7.0CAHM3_A/I pinout, SMBJ7.0CAHM3_A/I application, or SMBJ7.0CAHM3_A/I equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101-qualified halogen-free construction, thermal resistance data, and real-world use cases in ESD- and surge-sensitive analog front-ends.
Technical Context
This device functions as a voltage-clamping protector with symmetrical breakdown characteristics in both directions, enabling suppression of positive and negative transients without polarity dependency. Its glass-passivated junction ensures stable VBR (6.40–7.07 V at 10 mA test current) and low incremental surge resistance, critical for fast transient response under IEC 61000-4-2 and IEC 61000-4-5 stress conditions.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation up to 150 °C junction temperature when mounted on 5.0 mm × 5.0 mm copper pads. The SMBJ7.0CAHM3_A/I meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - confirming suitability for automotive-grade embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin in protected circuits. |
| VBR min/max | 6.40 V / 7.07 V at IT = 10 mA - Confirmed bidirectional breakdown range ensuring consistent turn-on across manufacturing lots. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamping voltage during 10/1000 µs surge; limits downstream IC stress to safe levels in 3.3 V or 5 V systems. |
| PPPM | 600 W - Peak pulse power handling capability under standardized 10/1000 µs waveform; supports repetitive surge events at 0.01 % duty cycle. |
| ID @ VWM | 800 µA - Maximum reverse leakage at 7.0 V; low enough to avoid signal integrity degradation in high-impedance sensor lines. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables deployment in under-hood automotive or industrial ambient environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as current entry point during positive or negative transient; no fixed polarity required in PCB layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completes symmetrical clamping path; enables placement across differential or single-ended lines without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal paths (e.g., RS-485, CAN, USB D+/D−) without external polarity management. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 3 surges (1 kV open-circuit, 0.5 Ω source impedance) on 24 V industrial bus lines without failure. |
| AEC-Q101 qualification | Validated for automotive applications including body control modules and infotainment interfaces where reliability over temperature and lifetime is mandated. |
| Halogen-free & RoHS | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance requirements. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH; eliminates bake-out prior to reflow, reducing assembly cost and moisture-related defects. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop sensors and analog voltage outputs from load-dump and inductive switching transients in factory automation PLCs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across sensor output pins to shunt surge energy before reaching precision ADC or op-amp input stages. Use Value: Limits clamped voltage to 12.0 V, preventing latch-up or damage to 12 V-rated signal conditioning ICs while maintaining <800 µA leakage at 7.0 V operating bias. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs against battery reverse connection and jump-start surges in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor installed between LIN data line and ground, absorbing ±100 V/500 ms pulses per ISO 7637-2 Pulse 5a. Use Value: Delivers 600 W surge handling with 12.0 V clamping, keeping transceiver supply rails within safe operating area during 12 V system faults. |
| Telecom Line Protection | Consumer USB Port ESD |
|
Use Scenario: Shielding Ethernet PHY magnetics center-taps and PoE injectors from lightning-induced surges in outdoor access points. IC Role / Device Role / Timing Role: Primary-level TVS connected between data pair and chassis ground to divert common-mode transients before reaching isolation transformers. Use Value: Symmetrical 6.40–7.07 V breakdown ensures balanced clamping on differential pairs; 100 °C/W RθJA allows thermal stability under repeated 10/1000 µs events. |
Use Scenario: Adding secondary ESD protection on USB 2.0 D+ and D− lines downstream of integrated port protection in smartphones and tablets. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical at 0 V) bidirectional clamp placed adjacent to connector to absorb IEC 61000-4-2 ±15 kV contact discharges. Use Value: 12.0 V clamping prevents overshoot beyond USB PHY absolute maximum ratings; halogen-free M3 suffix satisfies consumer product environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CAHE3_A/I | RoHS-compliant but not halogen-free; same VWM, VBR, VC, and PPPM specs; uses matte tin plating per J-STD-002. | Approved for commercial-grade industrial equipment where halogen content is unrestricted; lacks AEC-Q101 qualification. | Select when cost sensitivity outweighs automotive qualification or halogen-free requirements. |
| SMAJ7.0CAHM3_A/I | Same electrical specs but in smaller SMA (DO-214AC) package; 30 % smaller footprint (4.57 mm × 2.62 mm); RθJA = 130 °C/W. | Suitable for space-constrained consumer electronics; reduced thermal mass limits sustained surge repetition rate vs. SMBJ. | Choose only if board area is critical and thermal derating for >0.01 % duty cycle surges is acceptable. |
Compared with SMBJ7.0CAHE3_A/I, the SMBJ7.0CAHM3_A/I adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ7.0CAHM3_A/I, it trades footprint size for superior thermal dissipation and higher surge endurance in demanding industrial or automotive deployments.
Availability
SMBJ7.0CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom line protection, and consumer USB port ESD requiring stable component supply across production lifecycles.
Supply support for SMBJ7.0CAHM3_A/I 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 targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where robustness against ESD, lightning, and load dump is non-negotiable.
FAQ
What is the clamping voltage of SMBJ7.0CAHM3_A/I at its rated peak pulse current?
The SMBJ7.0CAHM3_A/I has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The 12.0 V clamping ensures downstream 3.3 V or 5 V logic remains within safe operating limits during surge events. SMBJ7.0CAHM3_A/I maintains this performance across its full operating temperature range.
Is SMBJ7.0CAHM3_A/I suitable for automotive applications?
Yes, SMBJ7.0CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly approved for use in body control modules, infotainment interfaces, and LIN/CAN node protection where extended temperature operation (-55 °C to +150 °C) and long-term reliability under vibration and thermal cycling are required. SMBJ7.0CAHM3_A/I meets all stress test criteria defined in AEC-Q101 Rev D.
How does the bidirectional design of SMBJ7.0CAHM3_A/I affect circuit layout?
The SMBJ7.0CAHM3_A/I has no polarity marking and functions identically in either orientation, simplifying PCB layout for differential or AC-coupled signals like RS-485, CAN, or Ethernet. Unlike unidirectional TVS diodes, it eliminates the need for orientation verification during assembly and avoids risk of misplacement. This symmetry also enables single-device protection across both polarities of transient events without additional components. SMBJ7.0CAHM3_A/I's DO-214AA package supports automated placement regardless of rotation.
What is the maximum reverse leakage current for SMBJ7.0CAHM3_A/I at its stand-off voltage?
At its 7.0 V stand-off voltage (VWM), the SMBJ7.0CAHM3_A/I exhibits a maximum reverse leakage current (ID) of 800 µA at 25 °C, per the Vishay datasheet. This low leakage preserves signal integrity in high-impedance sensor and communication lines. Leakage increases with temperature but remains below 2.5 mA at 125 °C, ensuring stable operation in industrial environments. SMBJ7.0CAHM3_A/I's glass-passivated junction contributes to this tight leakage control across its full temperature range.
Does SMBJ7.0CAHM3_A/I require special handling or baking before reflow soldering?
No - SMBJ7.0CAHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30 °C and ≤60 % relative humidity and requires no pre-reflow baking. Its moisture sensitivity is negligible due to the molded SMB package and robust passivation. Standard lead-free reflow profiles (peak 260 °C) apply directly. SMBJ7.0CAHM3_A/I's matte tin-plated leads comply with J-STD-002 and JESD 22-B102, ensuring reliable solder joint formation without oxidation concerns.
SMBJ7.0CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ7.0CAHM3_A/I FAQ
1.How can I place an order for SMBJ7.0CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHM3_A/I 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 SMBJ7.0CAHM3_A/I reliable?
The price and inventory of SMBJ7.0CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHM3_A/I?
SMBJ7.0CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHM3_A/I 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 SMBJ7.0CAHM3_A/I?
For technical support, including SMBJ7.0CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ7.0CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHM3_A/I 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 SMBJ7.0CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHM3_A/I?
All SMBJ7.0CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHM3_A/I, 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 SMBJ7.0CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHM3_A/I Tags
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