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Vishay General Semiconductor - Diodes Division SMBG7.0CA-M3/5B
- Part No.:
- SMBG7.0CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0CA-M3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,421
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Product details
Overview
SMBG7.0CA-M3/5B 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 (IPPM), and 600 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and halogen-free, targeting automotive sensor line protection.
For engineers reviewing the SMBG7.0CA-M3/5B datasheet, SMBG7.0CA-M3/5B pinout, SMBG7.0CA-M3/5B application, or SMBG7.0CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low VC/VWM ratio (1.71), MSL Level 1 reflow compatibility, TJ = –55 °C to +150 °C operating range, and compliance with UL 497B for telecom/sensor interface protection.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1.0 μA leakage at VWM), then avalanches symmetrically in both directions once VBR is exceeded. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the low incremental surge resistance enables effective energy diversion during 10/1000 μs transients.
The SMBG7.0CA-M3/5B is optimized for bidirectional signal line protection where polarity reversal or AC-coupled paths exist - such as CAN bus stubs, LIN interfaces, or differential sensor outputs - and leverages its 12.0 V clamping limit to safeguard 5 V or 3.3 V logic inputs without overvoltage stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse voltage before clamping begins; sets safe operating margin for 5 V systems. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed bidirectional breakdown window; ensures reliable triggering across temperature and unit variation. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamping voltage under 600 W 10/1000 μs surge; limits downstream IC stress to <12 V. |
| IPPM | 50.0 A - Peak surge current handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) testing when properly laid out. |
| PPPM | 600 W - Peak pulse power rating; defines transient energy absorption capability per single event. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Leakage @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Both terminals function identically; current flows either direction during transient events - no orientation required during placement. |
| Case (exposed metal pad) | Thermal conduction path | Integral thermal slug; requires minimum 5.0 mm × 5.0 mm copper pad per terminal for rated 600 W dissipation and RθJA = 100 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets JESD201 Class 2 whisker resistance and global environmental compliance requirements for industrial and automotive production. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost. |
| 600 W peak pulse power (10/1000 μs) | Provides robust immunity against ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surges in 12 V vehicle networks. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage overshoot during clamping - critical for protecting 5 V tolerant I/O pins of microcontrollers and transceivers. |
Applications
| Automotive Sensor Interface Protection | CAN Bus Stub Protection |
|---|---|
Use Scenario: Protecting analog/digital output lines of pressure, temperature, or position sensors mounted near motors or solenoids in vehicles. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing inductive kickback and ESD events before they reach the sensor ASIC or MCU ADC input. Use Value: Prevents latch-up or permanent damage to sensor signal conditioning circuitry by limiting transient voltage to ≤12.0 V at 50 A surge. | Use Scenario: Shielding short branch connections (stubs) on high-speed CAN FD networks from ground bounce and coupling-induced transients. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) bidirectional clamp placed at stub entry point to maintain signal integrity. Use Value: Maintains CAN common-mode noise rejection while suppressing >4 kV EFT bursts without distorting bit timing or causing false dominant states. |
| Industrial PLC Analog Input Protection | Telecom Line Interface Protection |
Use Scenario: Safeguarding 4–20 mA or 0–10 V analog input channels in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary front-end TVS element placed before precision op-amp buffer stages to prevent saturation or rail-to-rail overvoltage. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) test conditions without calibration drift or offset shift. | Use Scenario: Protecting RS-485/RS-232 transceiver I/O pins in base station backhaul or remote terminal units connected to outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level surge suppression stage following gas discharge tube (GDT) primary protection in multi-stage telecom architectures. Use Value: Clamps residual transients to <12 V after GDT crowbarring, ensuring transceiver survival under lightning-induced surges up to 6 kV. |
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 | Same VWM (7.0 V), but lower PPPM = 600 W (same), higher VC = 12.6 V at 48.2 A; SMB (DO-214AA) package - 0.083" wider body than SMBG. | Less suitable for ultra-dense layouts due to larger footprint; identical clamping performance but slightly degraded VC/IPPM ratio. | Select SMBJ7.0CA only if SMB footprint is already standardized and thermal pad area permits equivalent derating. |
| SMCJ7.0CA | Higher PPPM = 1500 W, same VWM/VBR, VC = 12.3 V at 122 A; SMC (DO-214AB) package - ~2× larger footprint and height. | Over-specified for most signal-line use cases; introduces unnecessary parasitic inductance and board space consumption. | Prefer SMBG7.0CA-M3/5B for space-constrained sensor nodes; reserve SMCJ7.0CA for high-energy power rail protection. |
Compared with SMBJ7.0CA and SMCJ7.0CA, the SMBG7.0CA-M3/5B delivers identical 7.0 V stand-off and 600 W surge rating in the smallest possible DO-215AA outline - enabling tighter routing, lower parasitic inductance, and better high-frequency transient response in compact automotive and IoT edge nodes.
Availability
SMBG7.0CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus stubs, industrial PLC analog inputs, and telecom line interfaces requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for SMBG7.0CA-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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and application-specific optimization.
The SMBG series is engineered for high-reliability transient suppression in space-constrained, thermally demanding environments - particularly automotive ECUs, ADAS sensors, and industrial fieldbus nodes where bidirectional clamping and MSL-1 reflow compatibility are mandatory.
FAQ
What is the exact breakdown voltage range for SMBG7.0CA-M3/5B?
The SMBG7.0CA-M3/5B has a guaranteed bidirectional breakdown voltage (VBR) range of 7.78 V to 8.60 V at 10 mA test current, measured per ANSI/IEEE C62.35 standards. This window ensures consistent clamping behavior across production lots and temperature extremes, and is validated for both forward and reverse polarity due to its bidirectional design.
Is SMBG7.0CA-M3/5B suitable for automotive applications?
Yes, SMBG7.0CA-M3/5B is AEC-Q101 qualified and specifically rated for automotive use. Its –55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and halogen-free (M3) construction meet stringent OEM requirements for engine bay, chassis, and ADAS sensor modules - confirmed in Vishay's qualification report for the SMBG family.
How does the clamping voltage of SMBG7.0CA-M3/5B compare to its stand-off voltage?
The SMBG7.0CA-M3/5B clamps at 12.0 V (VC) under 50.0 A peak pulse current, yielding a VC/VWM ratio of 1.71. This tight ratio ensures minimal overvoltage overshoot during transients - critical for protecting 5 V logic rails without exceeding absolute maximum ratings of downstream ICs like CAN transceivers or microcontroller I/Os.
Does SMBG7.0CA-M3/5B require polarity-aware PCB layout?
No - SMBG7.0CA-M3/5B is a bidirectional TVS diode with symmetrical terminal construction and no cathode band marking. Both terminals perform identically under positive or negative transients, eliminating orientation constraints during automated placement and simplifying layout for differential or AC-coupled signal paths.
What is the maximum allowable reverse leakage current for SMBG7.0CA-M3/5B at rated VWM?
At its 7.0 V stand-off voltage (VWM) and TA = 25 °C, the SMBG7.0CA-M3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes quiescent power loss in battery-powered automotive modules.
SMBG7.0CA-M3/5B 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0CA-M3/5B FAQ
1.How can I place an order for SMBG7.0CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0CA-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 SMBG7.0CA-M3/5B reliable?
The price and inventory of SMBG7.0CA-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 SMBG7.0CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.0CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0CA-M3/5B?
SMBG7.0CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0CA-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 SMBG7.0CA-M3/5B?
For technical support, including SMBG7.0CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0CA-M3/5B requirements.
6.How does Aetrix verify that SMBG7.0CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.0CA-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 SMBG7.0CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.0CA-M3/5B?
All SMBG7.0CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0CA-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 SMBG7.0CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBG7.0CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0CA-M3/5B Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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