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Vishay General Semiconductor - Diodes Division SMBG7.0CAHE3/5B
- Part No.:
- SMBG7.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0CAHE3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,158
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Product details
Overview
SMBG7.0CAHE3/5B 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, and 600 W peak pulse power (10/1000 µs). It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the SMBG7.0CAHE3/5B datasheet, SMBG7.0CAHE3/5B pinout, SMBG7.0CAHE3/5B application, or SMBG7.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low VC/VBR ratio (1.55), AEC-Q101 qualification, 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 voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity marking requirements and simplifying layout in AC-coupled or differential signal paths.
The SMBG7.0CAHE3/5B delivers stable performance across -55 °C to +150 °C junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation under high-duty-cycle surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system nominal voltage. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamped voltage during 600 W surge; limits stress on downstream ICs like CAN transceivers or ADC inputs. |
| PPPM | 600 W (10/1000 µs) - Peak surge handling capacity; supports IEC 61000-4-5 Level 4 compliance with proper PCB layout. |
| ID @ VWM | < 1.0 µA - Ultra-low leakage at rated stand-off; avoids signal integrity degradation in high-impedance sensor bias networks. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| Qualification | AEC-Q101 - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical PN junction; accepts surge current in either direction without polarity dependency. |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical structure; functions identically to Anode under reverse polarity-no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC characteristics in both directions-enables protection of AC signals, RS-485 buses, and unmarked sensor lines without orientation checks. |
| 600 W peak pulse power | Handles 50.0 A surges (10/1000 µs) while maintaining VC ≤ 12.0 V-sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave testing. |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements-supports deployment in engine control units, ADAS camera modules, and body electronics. |
| MSL Level 1, 260 °C reflow | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns-eliminates bake requirements pre-assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns)-critical for protecting high-speed interfaces like LIN or SENT. |
Applications
| Automotive Sensor Protection | Industrial I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤12.0 V during 50.0 A surges, preventing ADC saturation and latch-up in 3.3 V or 5 V systems. | Use Scenario: Safeguarding 24 V DC digital input channels on PLC modules against field-wiring induced surges and contact bounce. IC Role / Device Role / Timing Role: Bidirectional shunt protector across input terminals upstream of optocoupler or Schmitt trigger interface. Use Value: Maintains <1.0 µA leakage at 24 V nominal, avoiding false triggering while clamping 600 W transients without derating. |
| RS-485 Bus Protection | Automotive LIN Transceiver Protection |
Use Scenario: Shielding differential RS-485 data lines (A/B) in factory automation gateways from EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line to GND) with matched VBR tolerance (±5.3%). Use Value: Ensures <12.0 V common-mode clamping during 50.0 A events-preserves receiver input thresholds and prevents bus lockup. | Use Scenario: Securing LIN bus pins of automotive door module MCUs against battery disconnect transients and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamp between LIN pin and chassis ground, co-located with common-mode choke. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure uninterrupted operation during thermal cycling in vehicle door environments. |
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, but lower PPPM = 600 W (same rating), different package (SMB vs. SMBG); RθJA = 110 °C/W vs. 100 °C/W. | Not AEC-Q101 qualified; intended for commercial/industrial use only. | Select SMBJ7.0CA only if automotive qualification is not required and thermal margin permits higher junction rise. |
| SMCJ7.0CA | Higher PPPM = 1500 W, larger SMC (DO-214AB) package, VC = 12.3 V at 123 A; RθJA = 40 °C/W. | Over-specified for space-constrained automotive modules; better suited for high-energy industrial AC mains protection. | Choose SMCJ7.0CA when surge energy exceeds 600 W capability and board area allows larger footprint. |
Compared with SMBJ7.0CA and SMCJ7.0CA, the SMBG7.0CAHE3/5B uniquely combines AEC-Q101 qualification, SMBG's compact 4.57 mm × 3.94 mm footprint, and optimized thermal resistance (100 °C/W) for automotive signal-line protection where reliability, size, and thermal performance are jointly critical.
Availability
SMBG7.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, RS-485 communication ports, and LIN bus protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBG7.0CAHE3/5B 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, efficiency, and application-specific optimization.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments, balancing compact size, AEC-Q101 compliance, and robust 600 W surge handling in the DO-215AA outline.
FAQ
What does the "HE3/5B" suffix indicate in SMBG7.0CAHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "/5B" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This configuration ensures traceability, automotive-grade reliability, and compatibility with high-speed pick-and-place equipment for volume manufacturing of SMBG7.0CAHE3/5B.
Is SMBG7.0CAHE3/5B unidirectional or bidirectional?
SMBG7.0CAHE3/5B is a bidirectional transient voltage suppressor, confirmed by the "CA" suffix per Vishay documentation. It exhibits identical electrical characteristics-including VBR, VC, and IPPM-in both polarities, with no cathode band marking required. This makes SMBG7.0CAHE3/5B ideal for protecting AC-coupled or differential signal paths where polarity cannot be assumed.
What is the maximum clamping voltage of SMBG7.0CAHE3/5B and at what current is it specified?
The maximum clamping voltage (VC) of SMBG7.0CAHE3/5B is 12.0 V, measured at a peak pulse current (IPPM) of 50.0 A using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does SMBG7.0CAHE3/5B meet automotive reliability standards?
Yes, SMBG7.0CAHE3/5B is explicitly AEC-Q101 qualified per Vishay's datasheet revision 09-Jan-2024. This certification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness-validating SMBG7.0CAHE3/5B for use in automotive powertrain, chassis, and body electronics where long-term reliability under harsh environmental conditions is mandatory.
What is the thermal resistance of SMBG7.0CAHE3/5B and how does it affect layout design?
SMBG7.0CAHE3/5B 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. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must adhere to this pad size and avoid excessive trace length or isolation-directly impacting thermal performance and long-term reliability of SMBG7.0CAHE3/5B in high-duty-cycle applications.
SMBG7.0CAHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0CAHE3/5B FAQ
1.How can I place an order for SMBG7.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0CAHE3/5B 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 SMBG7.0CAHE3/5B reliable?
The price and inventory of SMBG7.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0CAHE3/5B?
SMBG7.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0CAHE3/5B 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 SMBG7.0CAHE3/5B?
For technical support, including SMBG7.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBG7.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.0CAHE3/5B 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 SMBG7.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.0CAHE3/5B?
All SMBG7.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0CAHE3/5B, 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 SMBG7.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG7.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0CAHE3/5B Tags
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