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Vishay General Semiconductor - Diodes Division SMBG64CA-M3/5B
- Part No.:
- SMBG64CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG64CA-M3/5B.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG64CA-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 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 103 V maximum clamping voltage (VC) at 5.8 A, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMBG64CA-M3/5B datasheet, SMBG64CA-M3/5B pinout, SMBG64CA-M3/5B application, or SMBG64CA-M3/5B equivalent, key selection considerations include bidirectional clamping symmetry, low clamping ratio (VC/VBR ≈ 1.39), MSL Level 1 reflow compatibility, halogen-free RoHS compliance, and suitability for CAN/LIN bus, sensor I/O, and automotive infotainment power rail protection.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical avalanche behavior in both polarities, enabling robust suppression of ± transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast energy diversion during sub-microsecond ESD events.
The SMBG64CA-M3/5B is rated for 150 °C maximum junction temperature and exhibits thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. Its 10/1000 µs waveform rating aligns with IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal/power line operating margin. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed bidirectional breakdown range; ensures consistent clamping onset across polarity and unit variation. |
| VC @ IPPM | 103 V at 5.8 A - Clamping voltage under 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling capacity; meets IEC 61000-4-5 surge test requirements for Level 4 (4 kV line-to-ground). |
| ID @ VWM | <1.0 µA - Reverse leakage current at stand-off voltage; minimizes quiescent power loss and signal distortion in high-impedance circuits. |
| TJ max. | 150 °C - Maximum junction temperature rating; enables reliable operation in under-hood automotive environments. |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without moisture-induced damage; no bake required prior to assembly. |
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, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts negative-going surges; forms symmetrical clamping path with cathode during bidirectional operation. |
| Cathode | Transient current entry (positive polarity) | Accepts positive-going surges; identical electrical role to anode due to bidirectional construction; no band marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR min/max and VC performance in both directions - eliminates need for polarity-aware layout or orientation verification. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets JEDEC J-STD-201 Class 2 whisker resistance and global environmental regulations - supports sustainable manufacturing and export compliance. |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive 4 kV surge events per IEC 61000-4-5 - protects against load dump, inductive switching, and lightning-induced coupling in 12 V/24 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 75 V-rated CAN transceivers and 65 V logic interfaces. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers (e.g., TCAN1042) from ESD and load-dump transients in vehicle networking. IC Role / Device Role / Timing Role: Shunt TVS placed between CANH/CANL and ground, clamping differential and common-mode surges within nanoseconds. Use Value: Maintains signal integrity by limiting transient overshoot to ≤103 V while preserving <1 pF junction capacitance - avoids data corruption at 5 Mbps. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (I²C, SPI) of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional clamp on sensor supply and signal pins, absorbing inductive kickback from solenoid drivers and relay coils. Use Value: Enables >100,000 surge cycles without degradation due to glass-passivated junction - extends field service life in harsh electromagnetic environments. |
| Automotive Infotainment Power Rails | Telecom Line Interface Circuits |
Use Scenario: Suppressing transients on 5 V/12 V power inputs to head unit MCUs, display drivers, and audio amplifiers. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters and LDOs, diverting surge energy before regulation stage. Use Value: Withstands 100 A surge current (IFSM-equivalent) during battery jump-start events - prevents brownout and latch-up in safety-critical subsystems. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges on RJ-45 ports in enterprise gateways and base stations. IC Role / Device Role / Timing Role: Secondary-level TVS in hybrid protection schemes, working with GDTs and PTCs to manage multi-stage energy dissipation. Use Value: Provides precise 64 V stand-off with <1 µA leakage - avoids false triggering on nominal 48 V phantom power while responding within 1 ns to fast-rising threats. |
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-T3 | Same VWM/VBR/VC, but SMB (DO-214AA) package; 1.5× larger footprint; RθJA = 85 °C/W vs. 100 °C/W. | Less suitable for space-constrained automotive modules; higher thermal mass delays response slightly but improves single-pulse energy absorption. | Select when board area allows and higher single-event robustness is prioritized over layout density. |
| 1.5KE68CA | Through-hole DO-201 package; same 64 V VWM, but higher VC = 110 V and lower PPPM = 1500 W (non-repetitive only); no AEC-Q101 qualification. | Not suitable for automated SMT lines or automotive qualification; limited to prototyping or legacy through-hole designs. | Choose only for manual assembly or cost-sensitive non-automotive applications where AEC-Q101 is not required. |
Compared with SMBJ64CA-T3 and 1.5KE68CA, the SMBG64CA-M3/5B delivers optimal balance of automotive qualification, compact SMBG footprint, and repeatable 600 W surge handling - making it the preferred choice for production-grade SMT-based automotive and industrial electronics requiring long-term supply stability and IPC-compliant assembly.
Availability
SMBG64CA-M3/5B is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial sensor interface circuits, and telecom line interface applications requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for SMBG64CA-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 high-reliability, automotive-qualified, and industry-standard solutions.
The SMBG series is engineered specifically for surface-mount transient suppression in space-constrained, high-reliability environments - targeting automotive electronics, industrial controls, and communications infrastructure where bidirectional surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the breakdown voltage range of the SMBG64CA-M3/5B?
The SMBG64CA-M3/5B has a guaranteed bidirectional breakdown voltage range of 71.1 V to 78.6 V at 1 mA test current, as specified in the Vishay datasheet Document Number 88456. This range ensures consistent clamping behavior regardless of polarity and supports design margining for worst-case surge conditions. The SMBG64CA-M3/5B maintains this specification across its full operating temperature range of –55 °C to +150 °C.
Is the SMBG64CA-M3/5B suitable for automotive applications?
Yes, the SMBG64CA-M3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and cabin electronics. Its halogen-free (M3) construction, MSL Level 1 reflow compatibility, and 150 °C junction rating meet stringent automotive reliability requirements. The SMBG64CA-M3/5B is commonly deployed in CAN/LIN bus protection, infotainment power rails, and ADAS sensor interfaces where certified robustness is mandatory.
What does the "CA" suffix indicate in SMBG64CA-M3/5B?
The "CA" suffix in SMBG64CA-M3/5B denotes a bidirectional transient voltage suppressor configuration, meaning the device provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional "A" variants, the CA version has no cathode band marking and exhibits identical VBR, VC, and leakage characteristics in either direction - confirmed in Vishay's Electrical Characteristics table for SMBG64CA-M3/5B.
What is the maximum clamping voltage of the SMBG64CA-M3/5B under surge conditions?
The SMBG64CA-M3/5B has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during a 600 W transient event. The SMBG64CA-M3/5B achieves this performance with a clamping ratio of approximately 1.39 (VC/VBR), indicating efficient energy diversion with minimal overvoltage exposure.
How does the SMBG64CA-M3/5B differ from the SMBJ64CA series?
The SMBG64CA-M3/5B uses the smaller SMBG (DO-215AA) package versus the SMBJ's SMB (DO-214AA), resulting in a 15 % smaller footprint and different thermal profile (RθJA = 100 °C/W vs. 85 °C/W). Both share identical electrical specs (VWM, VBR, VC, PPPM), but only the SMBG64CA-M3/5B carries the M3 halogen-free designation and is explicitly listed in AEC-Q101-qualified variants. The SMBG64CA-M3/5B is optimized for high-density automotive PCBs where space and compliance are critical.
SMBG64CA-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):
- 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG64CA-M3/5B FAQ
1.How can I place an order for SMBG64CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG64CA-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 SMBG64CA-M3/5B reliable?
The price and inventory of SMBG64CA-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 SMBG64CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG64CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG64CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG64CA-M3/5B?
SMBG64CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG64CA-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 SMBG64CA-M3/5B?
For technical support, including SMBG64CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG64CA-M3/5B requirements.
6.How does Aetrix verify that SMBG64CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG64CA-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 SMBG64CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG64CA-M3/5B?
All SMBG64CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG64CA-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 SMBG64CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBG64CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG64CA-M3/5B Tags
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