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Vishay General Semiconductor - Diodes Division SMBJ64CA-M3/5B
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- Part No.:
- SMBJ64CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64CA-M3/5B.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,824
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Product details
Overview
SMBJ64CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ64CA-M3/5B datasheet, SMBJ64CA-M3/5B pinout, SMBJ64CA-M3/5B application, or SMBJ64CA-M3/5B equivalent, this device is evaluated for bidirectional surge suppression in DC power rails, automotive body electronics, and telecom interface protection where low clamping voltage, fast response (<1 ns), and AEC-Q101-compliant variants are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its silicon avalanche junction delivers sub-nanosecond response to ESD and lightning-induced transients, and its low incremental surge resistance ensures minimal voltage overshoot during high-current surges up to 5.8 A (10/1000 µs).
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant (M3 suffix), and qualified to AEC-Q101 when ordered with HM3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Guaranteed avalanche conduction onset; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 103 V at IPPM = 5.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines safe margin for downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| IPPM (Peak Pulse Current) | 5.8 A - Maximum non-repetitive surge current the device passes while clamping at 103 V; sets minimum PCB trace width and fuse coordination. |
| TJmax | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm max length, 4.06 mm max width, and 2.20 mm max height; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with identical electrical behavior in both directions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band or polarity identification required for bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN bus, or differential sensor inputs. |
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing for industrial equipment and telecom infrastructure. |
| 103 V clamping at 5.8 A | Provides ≥17 % voltage margin below 120 V rail systems, preventing latch-up or damage to 100 V-rated MOSFETs and gate drivers. |
| Halogen-free, RoHS-compliant (M3) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for restricted substances in commercial-grade electronics. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without pre-baking; eliminates moisture-related popcorning risk during standard SMT reflow profiles. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Suppresses load-dump and jump-start transients on 12 V battery-fed DC/DC converter inputs. IC Role / Device Role: Primary overvoltage clamp placed upstream of buck controller and input capacitor. Use Value: Limits transient voltage to ≤103 V, protecting 100 V input-rated controllers and reducing need for oversized input capacitors. |
Use Scenario: Shields LIN bus transceivers and microcontroller I/O pins from ESD and inductive switching noise in door modules. IC Role / Device Role: Bidirectional line protector on LIN data line (VCC-to-GND and signal-to-GND paths). Use Value: Sub-ns response prevents data corruption during 8 kV contact ESD events per ISO 10605, maintaining communication integrity. |
| Telecom Interface Surge Protection | Consumer Sensor Signal Conditioning |
|
Use Scenario: Guards Ethernet PHY magnetics center taps and PoE power injectors against lightning-induced surges. IC Role / Device Role: Secondary-level TVS on isolated DC bias lines feeding active Ethernet components. Use Value: 600 W rating handles repetitive 10/1000 µs surges up to 0.01 % duty cycle, extending system MTBF in outdoor deployments. |
Use Scenario: Protects analog outputs of MEMS pressure sensors in HVAC control boards exposed to relay coil back-EMF. IC Role / Device Role: Low-capacitance (<50 pF) shunt suppressor on 0–5 V output line referenced to system ground. Use Value: Clamps transients to <103 V without distorting 12-bit ADC readings, preserving ±0.1 % full-scale accuracy. |
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 electrical specs and SMB package; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade, non-automotive applications where halogen content is unrestricted. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 qualification is unnecessary. |
| SMAJ64CA-13-F | Lower 400 W PPPM, higher VC = 107 V at 4.2 A; SMA (DO-214AC) package with smaller footprint (4.5 × 2.7 mm vs. 5.6 × 4.1 mm). | Suitable for space-constrained consumer PCBs where 600 W surge margin is not mandated. | Choose only if board area is critical and system-level surge testing confirms 400 W suffices for end-equipment immunity. |
Compared with SMBJ64CA-M3/5B, the E3 variant trades halogen-free status for lower unit cost in non-automotive settings, while the SMAJ64CA-13-F reduces surge capacity and physical size - requiring layout revision and derated system-level surge validation.
Availability
SMBJ64CA-M3/5B is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body electronics, and telecom interface surge suppression requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMBJ64CA-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 reliability, power efficiency, and automotive-grade qualification.
The SMBJ series targets high-energy transient suppression in harsh environments, engineered specifically for industrial automation, automotive subsystems, and infrastructure equipment demanding AEC-Q101 readiness and robust 600 W surge handling.
FAQ
What is the clamping voltage of SMBJ64CA-M3/5B at its rated peak pulse current?
The SMBJ64CA-M3/5B has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 5.8 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ64CA-M3/5B maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ64CA-M3/5B suitable for automotive applications?
SMBJ64CA-M3/5B itself is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For automotive use, Vishay offers the functionally identical SMBJ64CA-HM3_B/I variant - same SMB package and electrical specs, with added AEC-Q101 qualification and extended temperature validation. The SMBJ64CA-M3/5B remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated by OEM specifications.
How does the bidirectional design of SMBJ64CA-M3/5B affect its placement on the PCB?
The SMBJ64CA-M3/5B has no polarity marking and identical electrical behavior in both directions, so it can be placed in either orientation on the PCB without affecting surge protection performance. This simplifies layout, eliminates orientation errors during automated assembly, and enables use on AC-coupled or floating nodes such as differential data lines or transformer center taps. The SMBJ64CA-M3/5B requires only two mounting pads matching the DO-214AA footprint.
What is the thermal resistance of SMBJ64CA-M3/5B, and how does it impact power dissipation?
The SMBJ64CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This means a 5.0 W steady-state power dissipation (PD) raises the junction temperature by 500 °C above ambient - which exceeds its 150 °C maximum rating. Therefore, SMBJ64CA-M3/5B is intended only for transient, non-repetitive power dissipation; continuous DC power handling is not supported.
Can SMBJ64CA-M3/5B replace unidirectional TVS diodes like SMBJ64A-M3/5B in existing designs?
No - SMBJ64CA-M3/5B is bidirectional and lacks polarity marking, while SMBJ64A-M3/5B is unidirectional with a cathode band. Replacing one with the other requires verifying circuit topology: bidirectional use is valid only where both polarities of transient threat exist (e.g., AC lines or floating buses). In DC-only rails with defined ground reference, using SMBJ64CA-M3/5B may allow reverse leakage paths. Always validate clamping behavior and system-level immunity before substituting SMBJ64CA-M3/5B for SMBJ64A-M3/5B.
SMBJ64CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.7V
- 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 (SMBJ)
SMBJ64CA-M3/5B FAQ
1.How can I place an order for SMBJ64CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64CA-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 SMBJ64CA-M3/5B reliable?
The price and inventory of SMBJ64CA-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 SMBJ64CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ64CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64CA-M3/5B?
SMBJ64CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64CA-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 SMBJ64CA-M3/5B?
For technical support, including SMBJ64CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ64CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ64CA-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 SMBJ64CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ64CA-M3/5B?
All SMBJ64CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64CA-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 SMBJ64CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ64CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64CA-M3/5B Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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