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Vishay General Semiconductor - Diodes Division SMBG64CA-E3/5B
- Part No.:
- SMBG64CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG64CA-E3/5B.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
SMBG64CA-E3/5B 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 64 V standoff voltage (VWM), 71.1–78.6 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), <103 V clamping voltage at 5.8 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG64CA-E3/5B datasheet, SMBG64CA-E3/5B pinout, SMBG64CA-E3/5B application, or SMBG64CA-E3/5B equivalent, key selection criteria include bidirectional surge protection capability, low clamping ratio (VC/VBR ≈ 1.37), MSL Level 1 reflow compatibility, TJ max of +150 °C, and suitability for CAN/LIN bus, sensor I/O, and 12 V automotive power rail protection.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling robust suppression of positive and negative polarity transients without polarity-sensitive layout constraints. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The SMBG64CA-E3/5B delivers 600 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, derated linearly above 25 °C with RθJA = 100 °C/W. It exhibits ≤1.0 μA reverse leakage at 64 V and clamps to ≤103 V at 5.8 A, achieving a clamping ratio of 1.37–1.45 relative to its VBR range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Ensures reliable avalanche conduction onset across manufacturing lot |
| VC @ IPPM | ≤103 V at 5.8 A - Limits downstream IC voltage stress during ISO 7637-2 Pulse 1/2a/5a events |
| PPPM | 600 W (10/1000 μs) - Supports automotive load-dump and inductive switching surge immunity |
| TJ max | +150 °C - Enables operation in engine bay and under-hood environments |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components |
| Package | SMBG (DO-215AA) - Surface-mount footprint compatible with automated SMT assembly |
Pinout & Package
Two-terminal bidirectional device in SMBG (DO-215AA) package; no polarity marking required. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as input/output; bidirectional conduction eliminates orientation dependency during PCB placement |
| Case (exposed pad not present) | Thermal and mechanical interface | Plastic-molded body provides UL 94 V-0 flammability rating; thermal resistance RθJL = 20 °C/W to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., LIN, RS-485) without external polarity management |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V surge on 12 V systems when mounted on 5 mm × 5 mm copper pads |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 % typical) and low parameter drift over temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, body control, and ADAS sensor interfaces requiring high-reliability surge suppression |
| MSL Level 1 | Supports standard lead-free reflow profiles without baking or special handling, reducing manufacturing overhead |
Applications
| Automotive Power Rail Protection | LIN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point before DC/DC converter input. Use Value: Clamps 120 V transients to ≤103 V within nanoseconds, preventing overvoltage damage to downstream regulators and microcontrollers. | Use Scenario: Safeguarding LIN transceiver I/O pins against ESD and coupled noise from nearby high-current circuits. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt protector directly at connector interface. Use Value: Maintains LIN signal integrity with <103 V clamping while adding <0.5 ns propagation delay to data edges. |
| Industrial Sensor Signal Line Protection | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors from inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and PLC input, referenced to local ground. Use Value: Prevents false triggering and ADC saturation by limiting transients to <103 V without affecting DC accuracy or bandwidth. | Use Scenario: Protecting Hall-effect rotor position feedback lines in BLDC motor drives from commutation-induced spikes. IC Role / Device Role / Timing Role: Fast-response clamp on low-voltage feedback path between motor and controller ASIC. Use Value: Survives repetitive 600 W surges at 0.01 % duty cycle while maintaining signal fidelity for precise FOC control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA-E3/5B | Same VWM/VBR specs but 600 W rating tested per JEDEC JESD22-A114 (vs. 10/1000 μs); slightly higher VC (104 V) | Identical use cases; minor derating needed for ISO 7637-2 Pulse 5a margin | Select SMBJ64CA-E3/5B if legacy design uses SMBJ footprint or requires JEDEC-compliant test reporting |
| SMCJ64CA-E3/5B | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same VWM/VBR range | Used where higher surge energy absorption is required (e.g., alternator output lines), not drop-in due to footprint mismatch | Choose SMCJ64CA-E3/5B only when system-level testing confirms >600 W surge exposure and PCB layout allows larger SMC footprint |
Compared with SMBG64CA-E3/5B, SMBJ64CA-E3/5B offers identical electrical protection with marginally tighter VC consistency, while SMCJ64CA-E3/5B trades compact SMBG size for 2.5× higher surge capacity-making SMBG64CA-E3/5B optimal for space-constrained automotive modules needing AEC-Q101 compliance and MSL Level 1 process compatibility.
Availability
SMBG64CA-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, consumer appliance motor controls, and telecommunication line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG64CA-E3/5B 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 performance.
The SMBG series was developed for surface-mount transient suppression in space-constrained, high-reliability applications-particularly automotive and industrial systems demanding AEC-Q101 qualification, low-profile packaging, and repeatable clamping behavior.
FAQ
What is the clamping voltage of SMBG64CA-E3/5B at its rated peak pulse current?
The SMBG64CA-E3/5B has a maximum clamping voltage (VC) of 103 V at its specified peak pulse current (IPPM) of 5.8 A, measured using a 10/1000 μs waveform. This value ensures that downstream circuitry remains within safe operating limits during standardized surge events such as ISO 7637-2 Pulse 1 and Pulse 2a. The SMBG64CA-E3/5B achieves this with a clamping ratio of approximately 1.37–1.45 relative to its VBR range (71.1–78.6 V).
Is SMBG64CA-E3/5B suitable for automotive applications?
Yes, SMBG64CA-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its +150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and 600 W surge rating align with ISO 7637-2 and ISO 16750-2 requirements. The SMBG64CA-E3/5B is commonly deployed on 12 V power rails and low-speed communication lines like LIN and SENT in production vehicles.
Does SMBG64CA-E3/5B have polarity markings on the package?
No, SMBG64CA-E3/5B is a bidirectional TVS diode and carries no polarity marking-the device functions identically regardless of orientation on the PCB. Unlike unidirectional variants (e.g., SMBG64A), the "CA" suffix denotes symmetrical breakdown behavior, eliminating the need for cathode band identification. This simplifies layout and reduces assembly errors in differential or AC-coupled signal paths protected by the SMBG64CA-E3/5B.
What is the thermal resistance of SMBG64CA-E3/5B from junction to ambient?
The SMBG64CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and defines the steady-state temperature rise above ambient per watt of power dissipation. For pulsed operation, transient thermal impedance (per Fig. 5 in the datasheet) governs short-duration surge handling-critical for evaluating the SMBG64CA-E3/5B's response to sub-millisecond transients.
How does SMBG64CA-E3/5B differ from unidirectional SMBG64A-E3/5B?
The SMBG64CA-E3/5B is bidirectional with symmetrical VBR and clamping in both polarities, whereas SMBG64A-E3/5B is unidirectional and conducts only in reverse bias (cathode-positive). SMBG64CA-E3/5B has no polarity marking and supports AC signal line protection; SMBG64A-E3/5B requires correct orientation and includes forward voltage (VF = 3.5 V at 50 A) specification. Both share identical VWM (64 V), PPPM (600 W), and package (SMBG), but the SMBG64CA-E3/5B is preferred for LIN, CAN FD stubs, and sensor bridges where polarity reversal may occur.
SMBG64CA-E3/5B 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMBG64CA-E3/5B FAQ
1.How can I place an order for SMBG64CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG64CA-E3/5B 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 SMBG64CA-E3/5B reliable?
The price and inventory of SMBG64CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG64CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG64CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG64CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG64CA-E3/5B?
SMBG64CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG64CA-E3/5B 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 SMBG64CA-E3/5B?
For technical support, including SMBG64CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG64CA-E3/5B requirements.
6.How does Aetrix verify that SMBG64CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG64CA-E3/5B 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 SMBG64CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG64CA-E3/5B?
All SMBG64CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG64CA-E3/5B, 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 SMBG64CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBG64CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG64CA-E3/5B Tags
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