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Vishay General Semiconductor - Diodes Division SMBJ6.5CD-M3/I
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- Part No.:
- SMBJ6.5CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CD-M3/I.pdf
- Description:
- TVS DIODE 6.5VWM 11VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,171
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Product details
Overview
SMBJ6.5CD-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 6.5 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and ±3.5 % VBR tolerance. It clamps transients to 11.0 V at 54.5 A, protecting I/O lines in industrial sensor interfaces and power supply rails against ESD and inductive switching surges.
For engineers reviewing the SMBJ6.5CD-M3/I datasheet, SMBJ6.5CD-M3/I pinout, SMBJ6.5CD-M3/I application, or SMBJ6.5CD-M3/I equivalent, key selection criteria include bidirectional clamping capability, low leakage (<500 μA at 5.0 V), MSL Level 1 moisture sensitivity, halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector: when reverse voltage exceeds 6.5 V (min), it avalanches into low-impedance conduction, limiting transient energy to safe levels for downstream ICs. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Designed for repetitive surge events up to 0.01 % duty cycle, SMBJ6.5CD-M3/I delivers stable clamping performance across -55 °C to +150 °C junction temperature, with thermal resistance RθJA = 125 °C/W on minimum recommended pad layout and RθJM = 20 °C/W to mounting surface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.33 V / 7.87 V at 10 mA - defines precise clamping onset threshold with tight ±3.5 % tolerance |
| VWM | 6.5 V - maximum continuous reverse operating voltage before leakage rises above 500 μA |
| VC @ IPPM | 11.0 V at 54.5 A - clamped voltage during 600 W 10/1000 μs surge, directly limiting stress on protected circuitry |
| IPPM | 54.5 A - peak surge current handled without failure under standardized waveform |
| PPPM | 600 W - peak pulse power rating confirming robustness against common lightning/inductive transients |
| TJ max | +150 °C - enables reliable operation in high-temperature industrial environments |
| Leakage ID | ≤500 μA at VWM - ensures minimal standby power loss and signal integrity in always-on interfaces |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no cathode band; matte tin-plated leads, MSL Level 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (End A) | Transient current entry point in negative half-cycle | Connects to line needing bidirectional overvoltage protection; symmetric with Cathode |
| Cathode (End K) | Transient current entry point in positive half-cycle | Connects to same line as Anode; device functions identically in both directions |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise, predictable clamping onset without oversizing protection margin |
| 600 W peak pulse power (10/1000 μs) | Handles common IEC 61000-4-5 Level 3/4 surge events without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD) |
| Halogen-free, RoHS-compliant, M3 grade | Meets industrial environmental compliance and whisker resistance (JESD 201 Class 2) |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without pre-baking or special handling |
Applications
| Industrial Sensor Signal Protection | USB Port ESD Clamping |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in factory automation PLC modules exposed to relay coil kickback and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor outputs (e.g., RS-485, 4–20 mA loop) to clamp ±kV transients before they reach ADC or isolator inputs. Use Value: Prevents latch-up or permanent damage to precision front-end amplifiers by limiting transient voltage to ≤11.0 V while maintaining <500 μA leakage at 6.5 V operating bias. | Use Scenario: Safeguarding USB 2.0 D+/D− data lines in embedded host controllers against contact ESD per IEC 61000-4-2 ±8 kV air/±4 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor mounted directly at USB connector to shunt ESD current before reaching PHY transceiver. Use Value: Achieves sub-11 V clamping within nanoseconds, preserving signal integrity and meeting USB eye diagram requirements without adding series impedance. |
| DC Power Rail Surge Suppression | Automotive Body Control Module Inputs |
Use Scenario: Guarding 5 V/12 V DC input rails of industrial gateways against load dump and alternator ripple spikes in harsh electrical environments. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to absorb 600 W surges while maintaining stable rail voltage for downstream regulators and microcontrollers. Use Value: Withstands repetitive 10/1000 μs surges up to 0.01 % duty cycle and dissipates 5.0 W at TM = 50 °C, enabling compact thermal design without heatsinks. | Use Scenario: Protecting LIN bus or switch inputs in automotive BCMs subjected to ISO 7637-2 pulse 1/2a/3a transients during vehicle cranking and ignition. IC Role / Device Role / Timing Role: Bidirectional clamping element on low-voltage control lines where polarity reversal may occur during fault conditions. Use Value: Matches ISO 7637-2 test profiles with guaranteed 11.0 V clamping at 54.5 A, ensuring MCU GPIOs remain within absolute maximum ratings during battery transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA-E3/52 | Same VBR, VWM, PPPM; Vishay "E3" suffix denotes lead-free, RoHS-compliant, but not M3 whisker-tested | No M3 qualification - unsuitable for high-reliability industrial or automotive applications requiring JESD 201 Class 2 | Select SMBJ6.5CD-M3/I when whisker resistance and extended lifecycle assurance are required |
| 1.5SMC6.8CA | Higher VBR (7.14–7.88 V), same SMB package; 1500 W rating but larger 1.5 kW package footprint (DO-214AB) | Larger thermal mass and higher power handling, but incompatible PCB layout due to different body dimensions | Choose only if 1500 W surge margin is mandatory and board space allows DO-214AB footprint |
Compared with SMBJ6.5CA-E3/52, SMBJ6.5CD-M3/I adds JESD 201 Class 2 whisker resistance and tighter manufacturing controls; versus 1.5SMC6.8CA, it offers identical functional protection in a smaller, layout-compatible SMB package but with lower 600 W rating.
Availability
SMBJ6.5CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection, and DC power rail surge suppression requiring stable component supply, long-term manufacturability, and full RoHS/halogen-free compliance.
Supply support for SMBJ6.5CD-M3/I 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 SMBJ series is engineered for robust transient suppression in space-constrained, high-reliability applications - delivering precise clamping, low leakage, and repeatable surge endurance across automotive, industrial, and communications systems.
FAQ
What is the breakdown voltage range for SMBJ6.5CD-M3/I?
The SMBJ6.5CD-M3/I has a specified breakdown voltage (VBR) range of 7.33 V to 7.87 V at 10 mA test current, corresponding to ±3.5 % tolerance around the nominal 6.5 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports accurate system-level surge margin analysis without overdesign.
Is SMBJ6.5CD-M3/I unidirectional or bidirectional?
SMBJ6.5CD-M3/I is a bidirectional Transient Voltage Suppressor, indicated by the "CD" suffix per Vishay's naming convention. It provides symmetrical clamping in both polarities, with no cathode band marking on the SMB package - making it ideal for AC-coupled lines, differential buses, or circuits where voltage polarity reversal may occur during fault conditions.
What is the maximum clamping voltage of SMBJ6.5CD-M3/I under surge conditions?
The SMBJ6.5CD-M3/I clamps to a maximum of 11.0 V at its rated peak pulse current of 54.5 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for verifying compatibility with downstream IC absolute maximum ratings.
Does SMBJ6.5CD-M3/I meet RoHS and halogen-free requirements?
Yes, SMBJ6.5CD-M3/I carries the "M3" suffix, which explicitly denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standards. It also passes JESD 201 Class 2 whisker testing, making it suitable for high-reliability industrial and automotive applications where long-term solder joint integrity is essential.
What is the thermal resistance of SMBJ6.5CD-M3/I on standard PCB layout?
When mounted on the minimum recommended copper pad layout per Vishay's datasheet, SMBJ6.5CD-M3/I exhibits a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W. This value informs thermal derating calculations - for example, at ambient temperatures above 25 °C, steady-state power dissipation must be reduced per the derating curve to maintain TJ ≤ 150 °C.
SMBJ6.5CD-M3/I 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.33V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 54.5A
- 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)
SMBJ6.5CD-M3/I FAQ
1.How can I place an order for SMBJ6.5CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CD-M3/I 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 SMBJ6.5CD-M3/I reliable?
The price and inventory of SMBJ6.5CD-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CD-M3/I?
SMBJ6.5CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CD-M3/I 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 SMBJ6.5CD-M3/I?
For technical support, including SMBJ6.5CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CD-M3/I requirements.
6.How does Aetrix verify that SMBJ6.5CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CD-M3/I 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 SMBJ6.5CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CD-M3/I?
All SMBJ6.5CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CD-M3/I, 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 SMBJ6.5CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ6.5CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CD-M3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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