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Vishay General Semiconductor - Diodes Division SMBJ6.5CA-M3/5B
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- Part No.:
- SMBJ6.5CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CA-M3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,066
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Product details
Overview
SMBJ6.5CA-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 signal or power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤11.2 V at 53.6 A peak surge current - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ6.5CA-M3/5B datasheet, SMBJ6.5CA-M3/5B pinout, SMBJ6.5CA-M3/5B application, or SMBJ6.5CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 53.6 A surge, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping performance across -55 °C to +150 °C junction temperature range.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), has matte tin-plated leads solderable per J-STD-002, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) when mounted on minimum recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse stand-off voltage before significant leakage; ensures no conduction during normal operation. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - guaranteed breakdown threshold range; defines onset of clamping action. |
| VC @ IPPM | ≤11.2 V at 53.6 A - clamped voltage during 10/1000 µs transient; protects downstream components from overvoltage stress. |
| PPPM | 600 W - peak pulse power handling (10/1000 µs waveform); supports repetitive surges at 0.01% duty cycle. |
| IPPM | 53.6 A - maximum non-repetitive peak pulse current; determines survivability against lightning or inductive switch-off events. |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in high-ambient industrial environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with JEDEC-standard pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse polarity) | One terminal of symmetrical junction; accepts surge current in either direction without polarity dependency. |
| Cathode | Transient current entry (forward polarity) | Second terminal of symmetrical junction; completes bidirectional clamping path with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal lines. |
| 600 W peak pulse power | Withstands 10/1000 µs transients up to 53.6 A - suitable for IEC 61000-4-5 Level 4 surge immunity compliance. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental regulations without compromising thermal or electrical performance; qualified per JESD 201 Class 2 whisker test. |
| Low clamping ratio (VC/VBR) | ~1.47 (11.2 V / 7.6 V avg) - tight voltage control minimizes stress on protected ICs during surge events. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - supports standard lead-free assembly without pre-baking or special handling. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protecting gate drivers and feedback signal lines from inductive kickback during MOSFET/IGBT switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across motor phase outputs or encoder signal pairs to suppress >1 kV transients. Use Value: Prevents latch-up or permanent damage to microcontrollers and isolated gate drivers by limiting transient voltage to ≤11.2 V at 53.6 A. |
Use Scenario: Shielding LIN bus or analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V automotive systems. IC Role / Device Role / Timing Role: Primary line-level protection device located at connector interface, upstream of ESD diodes and signal conditioning circuitry. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 1/2a/5a events by clamping within 1 ns and dissipating 600 W without degradation. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
|
Use Scenario: Safeguarding AC/DC adapter secondary-side rectifiers and DC-DC controller inputs against lightning-induced surges on PoE or wall-adapter lines. IC Role / Device Role / Timing Role: First-stage transient suppressor placed before bulk capacitor and primary regulator IC to absorb energy before it reaches sensitive control logic. Use Value: Enables compliance with ITU-T K.20/21/45 recommendations by limiting let-through voltage to <12 V under 500 A 10/1000 µs surge. |
Use Scenario: Providing robust overvoltage protection on VBUS and CC lines of USB-C receptacles exposed to accidental 20 V adapter misconnection or hot-swap transients. IC Role / Device Role / Timing Role: Secondary protection element co-located with TVS arrays, absorbing residual energy after front-end ESD suppression. Use Value: Clamps VBUS to ≤11.2 V during 100 A surge events, preventing damage to USB PD controllers and port power switches rated for 20 V max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA-E3/5B | Same electrical specs, but RoHS-compliant commercial grade with lead-based finish (not halogen-free). | Acceptable where halogen-free requirement is not mandated; slightly higher whisker risk per JESD 201 Class 1 vs. M3's Class 2. | Select when cost sensitivity outweighs halogen-free compliance or when legacy qualification documentation references E3 suffix. |
| SMCJ6.5CA-M3 | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM and 109 A IPPM. | Used where higher surge margin is required (e.g., outdoor telecom cabinets); requires larger PCB area and different pad layout. | Choose when system-level surge testing exceeds 600 W capability or when field failure analysis shows marginal margin with SMBJ-grade devices. |
Compared with SMBJ6.5CA-E3/5B, the SMBJ6.5CA-M3/5B offers halogen-free compliance and enhanced whisker resistance; compared with SMCJ6.5CA-M3, it provides identical clamping performance in a 30% smaller footprint but with lower absolute surge capacity - making it optimal for space-constrained industrial PCBs requiring certified green materials.
Availability
SMBJ6.5CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power supply input, and consumer USB-C port protection requiring stable component supply and full traceability.
Supply support for SMBJ6.5CA-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed for high-reliability transient suppression in compact SMT designs, targeting industrial automation, automotive electronics, and communications infrastructure where space, thermal performance, and regulatory compliance are critical.
FAQ
What is the clamping voltage of SMBJ6.5CA-M3/5B at its rated peak pulse current?
The SMBJ6.5CA-M3/5B clamps to a maximum of 11.2 V at its rated peak pulse current of 53.6 A under a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and reflects worst-case voltage seen by protected circuitry during surge events. The SMBJ6.5CA-M3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) with minimal derating.
Is SMBJ6.5CA-M3/5B suitable for automotive applications?
The SMBJ6.5CA-M3/5B is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For automotive use, Vishay offers the HM3 variant (e.g., SMBJ6.5CAHM3_B/I), which adds AEC-Q101 qualification and extended reliability testing. The SMBJ6.5CA-M3/5B may be used in non-safety-critical automotive subsystems if validated per customer requirements, but it lacks the formal qualification required for most Tier 1 deployments.
How does the M3 suffix affect the specifications of SMBJ6.5CA-M3/5B?
"M3" denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It does not alter electrical parameters - VWM, VBR, VC, and PPPM remain identical to E3-suffix variants. The SMBJ6.5CA-M3/5B retains full compatibility with standard reflow profiles (MSL Level 1, 260 °C peak) and automated assembly processes.
What is the thermal resistance of SMBJ6.5CA-M3/5B, and how does it impact layout?
The SMBJ6.5CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe operation at full 5.0 W steady-state dissipation, PCB layout must provide adequate copper area and avoid thermal bottlenecks. The SMBJ6.5CA-M3/5B benefits from thermal vias under pads if ambient temperatures exceed 70 °C.
Can SMBJ6.5CA-M3/5B replace unidirectional SMBJ6.5A-M3/5B in existing designs?
No - SMBJ6.5CA-M3/5B is bidirectional and lacks cathode band marking, while SMBJ6.5A-M3/5B is unidirectional with defined polarity. Substituting them requires verifying circuit topology: bidirectional use is valid only where signals swing both above and below ground (e.g., differential buses, AC-coupled lines). In DC-biased rails, using SMBJ6.5CA-M3/5B may cause unintended conduction; always confirm signal polarity and grounding scheme before replacement.
SMBJ6.5CA-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 53.6A
- 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)
SMBJ6.5CA-M3/5B FAQ
1.How can I place an order for SMBJ6.5CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CA-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 SMBJ6.5CA-M3/5B reliable?
The price and inventory of SMBJ6.5CA-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 SMBJ6.5CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CA-M3/5B?
SMBJ6.5CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CA-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 SMBJ6.5CA-M3/5B?
For technical support, including SMBJ6.5CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ6.5CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CA-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 SMBJ6.5CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CA-M3/5B?
All SMBJ6.5CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CA-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 SMBJ6.5CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ6.5CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CA-M3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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