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Vishay General Semiconductor - Diodes Division SMBG7.0CA-M3/52
- Part No.:
- SMBG7.0CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0CA-M3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,107
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Product details
Overview
SMBG7.0CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform), with AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMBG7.0CA-M3/52 datasheet, SMBG7.0CA-M3/52 pinout, SMBG7.0CA-M3/52 application, or SMBG7.0CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, low VC/VWM ratio (1.71), halogen-free RoHS compliance (M3 suffix), MSL Level 1 rating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with symmetrical breakdown in both directions, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), while thermal resistance (RθJA = 100 °C/W) supports operation up to +150 °C junction temperature.
The SMBG7.0CA-M3/52 delivers precise clamping performance under standardized 10/1000 μs surge conditions, with IPPM = 50.0 A derived from PPPM = 600 W and VC = 12.0 V. Its bidirectional architecture eliminates need for polarity-aware layout, and it meets UL 497B recognition (QVGQ2) for telecom and industrial protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Ensures reliable breakdown initiation across process variation |
| VC @ IPPM | 12.0 V at 50.0 A - Limits downstream voltage stress during 600 W transient events |
| IPPM | 50.0 A - Peak surge current handled with 10/1000 μs waveform, derated above 25 °C |
| PPPM | 600 W - Sustains high-energy ESD and lightning-induced surges per IEC 61000-4-5 |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial enclosures |
| Leakage @ VWM | <1.0 μA - Minimizes standby power loss and avoids false triggering in high-impedance circuits |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); cathode band omitted (bidirectional symmetry).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients and serves as reference for positive clamping |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode; no polarity marking required; enables symmetric clamping in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Eliminates polarity-dependent layout errors and simplifies PCB routing for AC-coupled or floating signal lines |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance without degradation |
| Low clamping ratio (VC/VWM = 1.71) | Provides tighter voltage margin between operating and clamping thresholds than typical TVS diodes (often >1.8) |
| Halogen-free M3 construction | Meets IPC-4101D/21 and JEDEC J-STD-20E environmental requirements for green manufacturing |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor outputs from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp ±200 V transients before reaching signal conditioning IC. Use Value: Prevents latch-up or permanent damage to analog front-end amplifiers by limiting voltage to ≤12.0 V during 50 A surge events. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD and bus fault transients in factory automation PLCs. IC Role / Device Role / Timing Role: Paired SMBG7.0CA-M3/52 devices (one per line) provide symmetrical clamping referenced to common-mode ground. Use Value: Maintains CAN physical layer integrity under IEC 61000-4-2 Level 4 (15 kV contact discharge) without signal distortion or timing skew. |
| Telecom Line Card Surge Suppression | Consumer USB Port ESD Protection |
Use Scenario: Shielding Ethernet PHY interface (10/100BASE-TX) from lightning-induced surges entering via RJ45 connectors. IC Role / Device Role / Timing Role: Placed after isolation transformer, clamping common-mode transients across differential pairs. Use Value: Achieves <1 ns response with <12.0 V clamping, preserving signal integrity up to 100 MHz bandwidth. | Use Scenario: Protecting USB 2.0 D+/D− lines in portable speakers and docking stations from human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS integrated into USB receptacle footprint to shunt ±8 kV discharges. Use Value: Delivers sub-1.0 μA leakage at 5.0 V VWM, avoiding data corruption while meeting IEC 61000-4-2 immunity requirements. |
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 (7.0 V), higher VC (12.6 V), lower IPPM (47.6 A), same package but non-AEC-Q101 rated | Lacks automotive qualification; suitable for industrial/commercial only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMCJ7.0CA | Same VWM (7.0 V), higher PPPM (1500 W), larger SMC (DO-214AB) package, VC = 12.4 V at 121 A | Requires larger PCB area; better for high-energy surges but over-specified for most signal-line protection | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 or require extended lifetime under repetitive stress |
Compared with SMBJ7.0CA and SMCJ7.0CA, the SMBG7.0CA-M3/52 uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized 600 W/12.0 V clamping in the compact SMBG footprint-making it the preferred choice for space-constrained automotive and industrial signal-line protection where reliability and regulatory compliance are critical.
Availability
SMBG7.0CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom line cards, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SMBG7.0CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in automotive, industrial, and telecom infrastructure-emphasizing AEC-Q101 compliance, low-profile packaging, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What does the "CA" suffix indicate in SMBG7.0CA-M3/52?
The "CA" suffix denotes a bidirectional configuration, meaning the SMBG7.0CA-M3/52 provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBG7.0A), it has no polarity marking and functions identically regardless of voltage polarity applied across its terminals-critical for AC-coupled or floating signal lines.
Is SMBG7.0CA-M3/52 suitable for automotive applications?
Yes, SMBG7.0CA-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes halogen-free molding compound (M3 suffix), MSL Level 1 moisture sensitivity, and validated performance across −55 °C to +150 °C junction temperature-meeting requirements for engine control units, ADAS sensors, and infotainment interfaces per ISO 7637-2 and ISO 16750-2.
What is the maximum clamping voltage of SMBG7.0CA-M3/52 under surge conditions?
The SMBG7.0CA-M3/52 has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is guaranteed across all production lots and temperature ranges, ensuring downstream circuitry remains below critical overvoltage thresholds during transient events.
How does the SMBG7.0CA-M3/52 differ from the SMBJ7.0CA in practical design?
The SMBG7.0CA-M3/52 uses the smaller SMBG (DO-215AA) package versus SMBJ's DO-214AA, offering 25 % less board area. It also carries AEC-Q101 qualification and M3 halogen-free compliance-features absent in standard SMBJ7.0CA. While both share 7.0 V VWM, SMBG7.0CA-M3/52 achieves tighter clamping (12.0 V vs. 12.6 V) and is optimized for high-volume automotive SMT assembly.
What PCB pad layout is recommended for SMBG7.0CA-M3/52?
Vishay specifies mounting SMBG7.0CA-M3/52 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to ensure proper thermal dissipation and meet the 600 W pulse rating. The pad layout must follow the DO-215AA outline in the datasheet (Document Number 88456), with solder mask defined and no thermal relief-critical to maintain RθJA ≤ 100 °C/W and prevent premature failure during repetitive surges.
SMBG7.0CA-M3/52 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0CA-M3/52 FAQ
1.How can I place an order for SMBG7.0CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0CA-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 SMBG7.0CA-M3/52 reliable?
The price and inventory of SMBG7.0CA-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 SMBG7.0CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.0CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0CA-M3/52?
SMBG7.0CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0CA-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 SMBG7.0CA-M3/52?
For technical support, including SMBG7.0CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0CA-M3/52 requirements.
6.How does Aetrix verify that SMBG7.0CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.0CA-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 SMBG7.0CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.0CA-M3/52?
All SMBG7.0CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0CA-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 SMBG7.0CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBG7.0CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0CA-M3/52 Tags
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