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Vishay General Semiconductor - Diodes Division SMBJ6.5CA-E3/5B
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- Part No.:
- SMBJ6.5CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CA-E3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,874
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Product details
Overview
SMBJ6.5CA-E3/5B 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 for protecting MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ6.5CA-E3/5B datasheet, SMBJ6.5CA-E3/5B pinout, SMBJ6.5CA-E3/5B application, or SMBJ6.5CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 53.6 A surge, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping performance under repetitive 0.01% duty cycle transients.
The device is rated for -55 °C to +150 °C operating junction temperature, exhibits a VBR temperature coefficient of +0.061 %/°C, and achieves thermal resistance of 100 °C/W (junction-to-ambient) when mounted on minimum recommended pad layout per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse/forward working voltage before clamping begins |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - ensures reliable breakdown initiation within tight tolerance band |
| VC @ IPPM | ≤11.2 V at 53.6 A - low clamping voltage protects downstream 3.3 V/5 V logic and analog circuitry |
| PPPM | 600 W (10/1000 µs waveform) - handles high-energy ESD and inductive switching surges |
| IPPM | 53.6 A - peak surge current capacity validated per Fig. 1 and derated above 25 °C |
| TJ max. | +150 °C - supports operation in high-temperature industrial environments without derating |
| Package | SMB (DO-214AA) - low-profile SMT package compatible with standard reflow profiles and J-STD-020 MSL Level 1 |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity - either end serves as anode or cathode depending on transient direction |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive load switching events |
| Clamping voltage ≤11.2 V at 53.6 A | Ensures safe overvoltage margin for 5 V logic rails and mixed-signal ICs without overstressing inputs |
| Glass passivated chip junction | Improves long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement and supports standard lead-free reflow assembly processes |
| RoHS-compliant, matte tin terminals | Guarantees solderability and intermetallic formation control for high-yield automated placement |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from flyback voltage spikes during MOSFET/IGBT switching in BLDC motor inverters. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at power stage input/output nodes to limit transient excursions. Use Value: Prevents latch-up and oxide damage in 3.3 V MCU GPIOs by clamping to ≤11.2 V during 53.6 A surge events. |
Use Scenario: Safeguarding LIN bus transceivers and sensor interface circuits (e.g., ambient light, door position) from battery dump and load-dump transients. IC Role / Device Role / Timing Role: Primary line-level TVS on 12 V supply rail and bidirectional data lines to absorb ISO 7637-2 Pulse 1/2a/5a energy. Use Value: Maintains signal integrity during 100 V/50 ms load-dump pulses while meeting AEC-Q101 qualification requirements when specified. |
| Telecom Power Supplies | Consumer Sensor Hubs |
|
Use Scenario: Input-stage surge suppression on AC/DC adapter secondary-side 5 V/12 V rails feeding PoE-powered switches and baseband processors. IC Role / Device Role / Timing Role: First-line transient suppressor between bulk capacitor and DC-DC converter input, absorbing induced surges from nearby lightning strikes. Use Value: Limits voltage overshoot to <12 V during 600 W transients, preventing premature failure of synchronous rectifier MOSFETs. |
Use Scenario: ESD protection for I²C/SPI lines connecting environmental sensors (temperature, humidity, motion) to host SoCs in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential signal pairs to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Delivers sub-12 V clamping at 30 A (IEC 61000-4-5 40 A surge) without distorting 400 kHz I²C timing waveforms. |
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-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | Preferred where halogen-free compliance is mandated (e.g., EU public infrastructure projects) | Select when material content restrictions require halogen-free construction without altering board layout or performance. |
| SMCJ6.5CA-E3/57T | Same VWM/VBR, but in larger SMC (DO-214AB) package with 1500 W PPPM rating | Used where higher surge energy handling (>600 W) is required, e.g., front-end AC input stages | Choose only if system-level surge testing exceeds 600 W; requires PCB footprint change and higher thermal mass. |
Compared with SMBJ6.5CA-E3/5B, the M3/5B variant offers identical protection performance with halogen-free materials, while the SMCJ6.5CA-E3/57T delivers 2.5× higher surge power at the cost of larger footprint and reduced board density - making SMBJ6.5CA-E3/5B optimal for space-constrained 5 V signal line protection.
Availability
SMBJ6.5CA-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and telecom power supplies requiring stable component supply with full traceability and consistent RoHS compliance.
Supply support for SMBJ6.5CA-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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was developed for high-reliability surface-mount transient suppression in space-constrained, high-volume applications - balancing low clamping voltage, fast response, and robust surge handling in standardized SMB packaging.
FAQ
What is the clamping voltage of SMBJ6.5CA-E3/5B at its rated peak pulse current?
The SMBJ6.5CA-E3/5B clamps to a maximum of 11.2 V at its rated peak pulse current of 53.6 A (10/1000 µs waveform). This value is measured under standardized test conditions per IEC 61000-4-5 and ensures compatibility with 5 V logic families. The SMBJ6.5CA-E3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) with minimal drift due to its +0.061 %/°C VBR coefficient.
Is SMBJ6.5CA-E3/5B suitable for automotive applications?
The SMBJ6.5CA-E3/5B itself is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the functionally identical SMBJ6.5CAHE3_B variant (with HE3 suffix) that is AEC-Q101 qualified for automotive use. For non-automotive industrial or telecom designs, SMBJ6.5CA-E3/5B provides full specification compliance including MSL Level 1, RoHS, and 150 °C junction rating - making it appropriate for under-hood adjacent systems where qualification is not mandated.
How does the bidirectional design of SMBJ6.5CA-E3/5B affect its circuit placement?
The SMBJ6.5CA-E3/5B has no polarity marking and functions identically in both directions, allowing placement without orientation constraints on AC-coupled lines or differential buses like RS-485 or CAN. Unlike unidirectional TVS diodes, it eliminates risk of incorrect orientation during assembly and simplifies layout for symmetrical protection schemes. This bidirectional behavior is confirmed by identical VBR, VC, and IPPM values in both polarities per Vishay Document 88392.
What is the thermal resistance of SMBJ6.5CA-E3/5B, and how does it impact PCB layout?
The SMBJ6.5CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. To maintain safe operation below 150 °C junction temperature during repetitive surges, designers must ensure adequate copper area and avoid excessive trace length between the SMBJ6.5CA-E3/5B and ground/power planes. Thermal derating curves in Figure 2 of the datasheet guide layout adjustments above 25 °C ambient.
Does SMBJ6.5CA-E3/5B meet industry surge immunity standards such as IEC 61000-4-5?
Yes - the SMBJ6.5CA-E3/5B is characterized for 600 W peak pulse power using the 10/1000 µs waveform defined in IEC 61000-4-5, and its clamping performance (≤11.2 V at 53.6 A) enables system-level compliance when properly integrated with impedance-matched PCB routing and grounding. While the device itself is not certified to the standard, its parameters align with Level 3 (1 kV line-earth, 2 kV line-line) and Level 4 (2 kV line-earth, 4 kV line-line) test requirements when applied per Vishay's recommended layout guidelines in Document 88392.
SMBJ6.5CA-E3/5B 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-E3/5B FAQ
1.How can I place an order for SMBJ6.5CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CA-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 SMBJ6.5CA-E3/5B reliable?
The price and inventory of SMBJ6.5CA-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 SMBJ6.5CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CA-E3/5B?
SMBJ6.5CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CA-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 SMBJ6.5CA-E3/5B?
For technical support, including SMBJ6.5CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ6.5CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CA-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 SMBJ6.5CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CA-E3/5B?
All SMBJ6.5CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CA-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 SMBJ6.5CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ6.5CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CA-E3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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