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Vishay General Semiconductor - Diodes Division SMBG8.0CAHE3/5B
- Part No.:
- SMBG8.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG8.0CAHE3/5B.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,568
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Product details
Overview
SMBG8.0CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features 8.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), clamping voltage of 13.6 V at 44.1 A peak surge current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG8.0CAHE3/5B datasheet, SMBG8.0CAHE3/5B pinout, SMBG8.0CAHE3/5B application, or SMBG8.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VWM = 1.7), junction temperature range (–55 °C to +150 °C), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 8.0 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (VBR = 8.89–9.83 V at 1 mA). Its bidirectional symmetry enables protection of AC-coupled or differential lines without polarity constraints.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W, supporting sustained operation up to TJ = 150 °C. The glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), critical for suppressing ESD and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Breakdown voltage range confirming tight manufacturing tolerance for predictable trigger point. |
| VC @ IPPM | 13.6 V at 44.1 A - Clamping voltage during 600 W transient; limits downstream IC stress to safe levels. |
| PPPM | 600 W (10/1000 μs) - Peak surge power handling capacity; validated for repetitive 0.01% duty cycle events. |
| IPPM | 44.1 A - Peak pulse current capability; determines minimum trace width and PCB pad design for energy dissipation. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade junction temperature range enabling under-hood and engine-control module use. |
| Leakage ID | <1.0 μA at 8.0 V - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Case meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts surge current toward ground during positive transients; symmetric with cathode for bidirectional operation. |
| Cathode | Transient current entry (negative half-cycle) | Conducts surge current toward ground during negative transients; functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without external polarity management. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, infotainment interfaces, and ADAS sensor lines. |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without degradation. |
| Low clamping ratio (VC/VWM = 1.7) | Minimizes voltage overshoot during clamping-critical for protecting 3.3 V and 5 V logic interfaces. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no moisture sensitivity handling required pre-assembly. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting CAN_H/CAN_L differential pair against load dump, jump-start spikes, and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector interface to clamp transients before they reach CAN transceiver. Use Value: Maintains CAN signal integrity below 13.6 V clamping level while surviving 600 W pulses per ISO 16750-2. |
Use Scenario: Safeguarding analog outputs (4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional line protector across sensor output terminals to absorb inductive kickback from solenoid drivers. Use Value: Prevents sensor IC latch-up or damage from >1 kV transients with sub-ns response and <1 μA leakage at 8 V. |
| USB 2.0 Data Line Protection | DC Power Input Stage (5 V Rail) |
|
Use Scenario: ESD suppression on D+/D− lines of automotive USB host ports exposed to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to divert HBM/CDM energy away from PHY. Use Value: Clamps 8 kV contact discharge to ≤13.6 V within nanoseconds, preserving USB 2.0 signal rise/fall times. |
Use Scenario: Overvoltage safeguard on 5 V supply input of embedded microcontroller modules subjected to power-rail transients. IC Role / Device Role / Timing Role: Primary shunt protector upstream of LDO or DC-DC converter to prevent overvoltage propagation. Use Value: Limits input rail excursion to 13.6 V during 44.1 A surges, ensuring downstream regulator remains within absolute max ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Same VWM (8.0 V), same SMB package, but lower PPPM = 600 W (same rating) and higher VC = 13.6 V (identical); differs only in JEDEC prefix (SMBJ vs SMBG) and minor thermal resistance (RθJA = 110 °C/W vs 100 °C/W). | Identical functional role; suitable where board space and thermal pad layout match SMBG footprint. | Select SMBG8.0CAHE3/5B when AEC-Q101 qualification and tighter thermal resistance are required. |
| SMCJ8.0CA | Higher PPPM = 1500 W, larger SMC (DO-214AB) package, same VWM/VC, but 2× footprint area and 3× weight; not pin-compatible. | Used where higher surge energy absorption is needed (e.g., 12 V battery rail), but requires PCB redesign. | Choose SMBG8.0CAHE3/5B for space-constrained automotive modules where 600 W suffices and SMBG footprint is fixed. |
Compared with SMBJ8.0CA, SMBG8.0CAHE3/5B offers superior thermal performance (RθJA = 100 vs 110 °C/W) and AEC-Q101 validation; versus SMCJ8.0CA, it trades surge capacity for compactness and direct drop-in compatibility in SMB-layout designs.
Availability
SMBG8.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and USB data line protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBG8.0CAHE3/5B 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, automotive qualification, and high-volume manufacturability.
The SMBG series is engineered for high-reliability transient suppression in automotive and industrial environments, delivering consistent clamping performance across wide temperature ranges and stringent surge standards.
FAQ
What is the clamping voltage of SMBG8.0CAHE3/5B at its rated peak pulse current?
The SMBG8.0CAHE3/5B has a maximum clamping voltage (VC) of 13.6 V at its rated peak pulse current (IPPM) of 44.1 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and confirms the device's ability to limit transient overvoltage to a safe level for downstream 5 V logic components. The SMBG8.0CAHE3/5B achieves this with minimal voltage overshoot relative to its 8.0 V stand-off rating.
Is SMBG8.0CAHE3/5B suitable for automotive applications?
Yes, SMBG8.0CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment systems. Its –55 °C to +150 °C junction temperature range, robust 600 W surge capability, and bidirectional clamping make it appropriate for CAN bus, LIN, and sensor interface protection per ISO 7637-2 and ISO 16750-2 requirements. The SMBG8.0CAHE3/5B HE3 suffix denotes AEC-Q101 qualification and RoHS compliance.
How does the SMBG8.0CAHE3/5B differ from unidirectional variants like SMBG8.0AHE3/5B?
The SMBG8.0CAHE3/5B is bidirectional, meaning it clamps voltage transients of either polarity symmetrically across its terminals, with no cathode band marking. In contrast, SMBG8.0AHE3/5B is unidirectional, featuring a cathode band and conducting only during reverse-biased surges. Both share identical VWM (8.0 V), VBR, and PPPM, but the SMBG8.0CAHE3/5B is selected for AC-coupled, differential, or polarity-agnostic protection where dual-direction clamping is required.
What is the maximum reverse leakage current for SMBG8.0CAHE3/5B at its stand-off voltage?
The SMBG8.0CAHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 8.0 V and ambient temperature of 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in always-on or battery-powered circuits. The SMBG8.0CAHE3/5B maintains this specification across its full operating temperature range, supporting reliable long-term operation in precision analog and low-power embedded systems.
What package type and mounting specifications apply to SMBG8.0CAHE3/5B?
The SMBG8.0CAHE3/5B uses the SMBG (DO-215AA) surface-mount package, with dimensions of 4.57 mm × 3.94 mm × 2.10 mm and matte tin-plated leads. It is qualified for MSL Level 1 (peak reflow temperature 260 °C) and requires mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated thermal and surge performance. The SMBG8.0CAHE3/5B is supplied in 13" diameter tape-and-reel (3200 units per reel, code 5B) with RoHS-compliant and AEC-Q101-qualified HE3 finish.
SMBG8.0CAHE3/5B 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBG8.0CAHE3/5B FAQ
1.How can I place an order for SMBG8.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG8.0CAHE3/5B 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 SMBG8.0CAHE3/5B reliable?
The price and inventory of SMBG8.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG8.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG8.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG8.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG8.0CAHE3/5B?
SMBG8.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG8.0CAHE3/5B 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 SMBG8.0CAHE3/5B?
For technical support, including SMBG8.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG8.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBG8.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG8.0CAHE3/5B 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 SMBG8.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG8.0CAHE3/5B?
All SMBG8.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG8.0CAHE3/5B, 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 SMBG8.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG8.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG8.0CAHE3/5B Tags
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