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Vishay General Semiconductor - Diodes Division SMB8J6.5CA-E3/5B
- Part No.:
- SMB8J6.5CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CA-E3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,054
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Product details
Overview
SMB8J6.5CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V clamping voltage (VC) at 1000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J6.5CA-E3/5B datasheet, SMB8J6.5CA-E3/5B pinout, SMB8J6.5CA-E3/5B application, or SMB8J6.5CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, RoHS-compliant E3 termination, and compatibility with 0.2" × 0.2" copper pad layout per JEDEC standard.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Rated for -55 °C to +150 °C junction temperature, it meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak. The 72 °C/W junction-to-ambient thermal resistance requires minimum 5.0 mm × 5.0 mm copper pads per terminal for full 800 W rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 11.2 V at 1000 A - limits protected circuit voltage during worst-case 10/1000 µs surge |
| PPPM | 800 W - peak transient energy absorption capacity under standardized waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - supports under-hood automotive and industrial ambient environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and IPC-7351B land pattern |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Case dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage above ±11.2 V regardless of polarity |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides thermal path to PCB copper and mechanical mounting stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
| Glass passivated junction | Enhances reliability against moisture ingress and long-term parameter drift in harsh environments |
| MSL Level 1 rating | Enables single-reflow assembly without baking; peak reflow temperature up to 260 °C |
| RoHS-compliant E3 termination | Meets EU Directive 2011/65/EU with matte tin plating and JESD 201 Class 2 whisker resistance |
| Low profile SMB package | Height ≤ 2.20 mm enables use in space-constrained modules such as ADAS camera ECUs and motor control boards |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching PHY IC. Use Value: Maintains signal integrity below 11.2 V clamp during 1000 A transients, preserving communication link uptime per AEC-Q100 Grade 1 timing margins. | Use Scenario: Safeguarding analog input channels of PLC analog modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end TVS paired with series current-limiting resistor to limit fault current into ADC front-end. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) while maintaining <1 µA leakage at 6.5 V operating bias. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in USB PD 3.1 adapters after DC-DC conversion. IC Role / Device Role / Timing Role: Fast-response clamp across 5 V/9 V/15 V/20 V output rails to prevent downstream MOSFET gate oxide failure. Use Value: Clamps within 1 ns to hold rail voltage ≤11.2 V during 10/1000 µs surges, avoiding latch-up in synchronous rectifier controllers. | Use Scenario: Ethernet PHY port protection on enterprise switch line cards subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Common-mode TVS across differential pairs (e.g., TX+/TX−) referenced to chassis ground. Use Value: Symmetric 6.5 V standoff allows operation across ±12 V bias range while delivering 800 W dissipation per line pair. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CA-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | Required where halogen-free material declaration is mandated (e.g., EU medical devices) | Select when compliance with IEC 61249-2-21 or JEDEC J-STD-609A Class 1 applies |
| SMC8J6.5CA-E3/5B | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1000 W PPPM rating | Used where higher surge margin is needed (e.g., 48 V battery systems with >1500 A surge risk) | Choose only if board layout allows 7.11 mm × 6.22 mm footprint and thermal design supports 1000 W derating |
Compared with SMB8J6.5CA-E3/5B, the M3 variant offers identical protection performance with halogen-free construction, while the SMC8J6.5CA-E3/5B delivers 25% higher peak power handling at the cost of 70% larger PCB area and different thermal management requirements.
Availability
SMB8J6.5CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom line card protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMB8J6.5CA-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, and protection devices with emphasis on reliability and automotive-grade validation.
The SMB8J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, bidirectional surge suppression in safety-critical automotive and industrial control systems.
FAQ
What is the clamping voltage of SMB8J6.5CA-E3/5B at its rated peak pulse current?
The SMB8J6.5CA-E3/5B has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 1000 A under the standard 10/1000 µs waveform. This value is measured at 25 °C ambient and assumes proper PCB thermal design with 0.2" × 0.2" copper pads per terminal. The SMB8J6.5CA-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMB8J6.5CA-E3/5B qualified for automotive applications?
Yes, SMB8J6.5CA-E3/5B is AEC-Q101 qualified and designated for automotive use with the HE3 suffix implied in its ordering code structure. It undergoes stress testing including high-temperature operating life, temperature cycling, and ESD per AEC-Q101 Rev D. The SMB8J6.5CA-E3/5B is commonly used in engine control units, body control modules, and ADAS sensor interfaces where automotive-grade reliability is mandatory.
What does the "E3/5B" suffix mean in SMB8J6.5CA-E3/5B?
The "E3" denotes RoHS-compliant, commercial-grade matte tin termination meeting JESD 201 Class 2 whisker resistance, while "5B" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This configuration ensures compatibility with high-speed pick-and-place equipment and satisfies IPC-A-610 Class 2 assembly requirements. The SMB8J6.5CA-E3/5B is not halogen-free - that variant uses the M3 suffix instead.
How does SMB8J6.5CA-E3/5B differ from unidirectional SMB10J6.5A-E3/5B?
The SMB8J6.5CA-E3/5B is bidirectional with symmetrical clamping behavior, whereas SMB10J6.5A-E3/5B is unidirectional and conducts only in reverse bias. SMB8J6.5CA-E3/5B has lower peak pulse power (800 W vs. 1000 W) and lower peak pulse current (1000 A vs. 500 A for the unidirectional version at same VWM), reflecting its dual-path conduction architecture. Both share identical VWM (6.5 V) and VC (11.2 V), but SMB8J6.5CA-E3/5B is preferred for AC or differential signal protection.
What is the thermal resistance and recommended PCB layout for SMB8J6.5CA-E3/5B?
The SMB8J6.5CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per JEDEC standards. To sustain full 800 W rating, each pad must be solid copper with ≥2 oz thickness and thermally connected to internal ground/power planes via ≥4 vias. The SMB8J6.5CA-E3/5B datasheet specifies minimum pad dimensions of 2.18 mm × 1.52 mm and maximum outline of 2.159 mm × 2.44 mm.
SMB8J6.5CA-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):
- 71.4A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J6.5CA-E3/5B FAQ
1.How can I place an order for SMB8J6.5CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CA-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 SMB8J6.5CA-E3/5B reliable?
The price and inventory of SMB8J6.5CA-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 SMB8J6.5CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CA-E3/5B?
SMB8J6.5CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CA-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 SMB8J6.5CA-E3/5B?
For technical support, including SMB8J6.5CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CA-E3/5B requirements.
6.How does Aetrix verify that SMB8J6.5CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CA-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 SMB8J6.5CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CA-E3/5B?
All SMB8J6.5CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CA-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 SMB8J6.5CA-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J6.5CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CA-E3/5B Tags
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