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Vishay General Semiconductor - Diodes Division SMBG7.0CA-E3/52
- Part No.:
- SMBG7.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0CA-E3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,422
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Product details
Overview
SMBG7.0CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the SMBG7.0CA-E3/52 datasheet, SMBG7.0CA-E3/52 pinout, SMBG7.0CA-E3/52 application, or SMBG7.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low VC/VBR ratio (≤1.55), MSL Level 1 reflow compatibility, TJ = –55 to +150 °C operating range, and compliance with UL 497B for telecom/sensor line protection.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging an avalanche junction to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities - critical for AC-coupled or floating signal lines such as CAN, LIN, or sensor differential pairs.
The SMBG7.0CA-E3/52 uses glass-passivated silicon die mounted in a low-profile SMBG package with matte tin-plated leads. Thermal resistance is RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads), enabling reliable operation under repetitive 0.01% duty cycle surges without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal signal swing. |
| VBR (min/max) | 7.78 V / 8.60 V at IT = 10 mA - Confirmed breakdown threshold ensures predictable turn-on across production lot. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamping voltage under 10/1000 μs surge defines worst-case overvoltage seen by downstream IC. |
| PPPM | 600 W - Peak pulse power handling capacity determines survivability against IEC 61000-4-5 Level 4 surges. |
| IPPM | 50.0 A - Peak surge current rating directly maps to 10/1000 μs waveform compliance per ANSI/IEEE C62.35. |
| TJ Range | –55 °C to +150 °C - Extended junction temperature range supports under-hood automotive deployment. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including HTOL, TCT, and ESD testing. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative half-cycle) | Accepts transient energy during negative voltage excursions; electrically identical to Cathode in bidirectional mode. |
| Cathode | Surge current entry (positive half-cycle) | Accepts transient energy during positive voltage excursions; functionally interchangeable with Anode due to symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating lines (e.g., RS-485, CAN bus) without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV surge) requirements when properly laid out on 5 mm × 5 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity limitations or baking requirements. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient-induced ADC saturation and prevents latch-up in downstream MCU by clamping to ≤12.0 V during 50 A surges. | Use Scenario: Guarding RS-485 transceiver I/O pins against ESD (IEC 61000-4-2 ±15 kV) and fast transients in factory automation networks. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to shunt surge before reaching transceiver ESD structure. Use Value: Maintains signal integrity with <15 pF junction capacitance at 0 V bias while surviving repeated ±8 kV contact discharge events. |
| Automotive LIN Bus | Consumer IoT Sensor Hub |
Use Scenario: Safeguarding LIN transceiver pins in body control modules exposed to battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional suppressor connected between LIN bus line and ground, referenced to local GND plane. Use Value: Withstands 100 A non-repetitive forward surge (IFSM) and clamps to 12.0 V, preventing transceiver damage during 12 V system faults. | Use Scenario: Protecting I²C/SPI lines linking environmental sensors (humidity, motion) to host MCU in smart home hubs. IC Role / Device Role / Timing Role: Compact TVS placed adjacent to sensor connector to intercept ESD from user-accessible ports. Use Value: RoHS-compliant, halogen-free variant available (HE3/HM3 suffixes); enables full regulatory compliance for CE/FCC-marked consumer products. |
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 | Same VWM, VBR, VC; lower PPPM = 600 W but rated for 10/1000 μs only (not 8.3 ms surge); SMB (DO-214AA) package, 1.6 mm taller. | Less suitable for high-energy automotive load dump where longer surge duration matters. | Select SMBG7.0CA-E3/52 when board space is constrained and MSL Level 1 reflow is required. |
| 1.5KE7.0CA | Higher PPPM = 1500 W, axial DO-201AD package; VC = 12.0 V same, but larger footprint and manual assembly only. | Not suitable for automated SMT lines; incompatible with high-density PCB layouts. | Choose SMBG7.0CA-E3/52 for fully automated production and space-constrained automotive modules. |
Compared with SMBJ7.0CA and 1.5KE7.0CA, the SMBG7.0CA-E3/52 delivers identical clamping performance in a lower-profile, MSL Level 1–compliant SMBG package optimized for automotive SMT assembly - making it the preferred choice for next-generation compact sensor nodes requiring AEC-Q101 validation.
Availability
SMBG7.0CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and consumer IoT ESD mitigation requiring stable component supply and long-term lifecycle support.
Supply support for SMBG7.0CA-E3/52 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 automotive-grade qualification.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems - balancing low clamping voltage, robust surge handling, and full AEC-Q101 compliance.
FAQ
What is the clamping voltage of SMBG7.0CA-E3/52 at its rated peak pulse current?
The SMBG7.0CA-E3/52 has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG7.0CA-E3/52 maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBG7.0CA-E3/52 suitable for automotive applications?
Yes, SMBG7.0CA-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C junction temperature range, MSL Level 1 reflow compatibility, and validated performance against ISO 7637-2 and IEC 61000-4-5 make it appropriate for protecting LIN, CAN, and sensor interfaces in ECUs and ADAS modules. The SMBG7.0CA-E3/52 meets UL 497B recognition for telecom/signal line protectors.
Does SMBG7.0CA-E3/52 have polarity markings?
No, SMBG7.0CA-E3/52 is a bidirectional TVS diode and carries no polarity marking on the package. Unlike unidirectional variants (e.g., SMBG7.0A), the SMBG7.0CA-E3/52 exhibits symmetrical electrical characteristics in both directions - meaning either terminal may serve as anode or cathode depending on instantaneous voltage polarity. This eliminates orientation errors during automated placement.
What is the thermal resistance of SMBG7.0CA-E3/52?
The SMBG7.0CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its junction-to-lead resistance (RθJL) is 20 °C/W. These values assume JEDEC-standard board layout and define safe power derating above 25 °C ambient - critical for sustained surge duty cycles in automotive modules. The SMBG7.0CA-E3/52 must be routed with adequate copper area to maintain thermal stability.
How does SMBG7.0CA-E3/52 differ from SMBG7.0A?
SMBG7.0CA-E3/52 is bidirectional with symmetrical clamping in both polarities, while SMBG7.0A is unidirectional and features a cathode band marking. Their VWM, VBR, and VC values are identical, but SMBG7.0A supports 100 A IFSM (8.3 ms surge) whereas SMBG7.0CA-E3/52 does not specify IFSM due to bidirectional construction. The SMBG7.0CA-E3/52 is preferred for AC-coupled lines like RS-485 or LIN; SMBG7.0A suits DC-biased rails where polarity is fixed.
SMBG7.0CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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 (SMBG)
SMBG7.0CA-E3/52 FAQ
1.How can I place an order for SMBG7.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0CA-E3/52 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 SMBG7.0CA-E3/52 reliable?
The price and inventory of SMBG7.0CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0CA-E3/52?
SMBG7.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0CA-E3/52 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 SMBG7.0CA-E3/52?
For technical support, including SMBG7.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0CA-E3/52 requirements.
6.How does Aetrix verify that SMBG7.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.0CA-E3/52 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 SMBG7.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.0CA-E3/52?
All SMBG7.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0CA-E3/52, 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 SMBG7.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG7.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0CA-E3/52 Tags
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