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Vishay General Semiconductor - Diodes Division SMBJ6.5A-E3/5B
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- Part No.:
- SMBJ6.5A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5A-E3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,570
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Product details
Overview
SMBJ6.5A-E3/5B from Vishay General Semiconductor is a unidirectional 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 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 53.6 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 and telecom systems.
For engineers reviewing the SMBJ6.5A-E3/5B datasheet, SMBJ6.5A-E3/5B pinout, SMBJ6.5A-E3/5B application, or SMBJ6.5A-E3/5B equivalent, key selection criteria include unidirectional polarity, 11.2 V clamping performance under 53.6 A surge, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt clamp, entering avalanche conduction when reverse voltage exceeds its VBR range (7.22–7.98 V). Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Thermally, it sustains operation from –55 °C to +150 °C junction temperature, with RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), and is rated for 100 A non-repetitive forward surge (8.3 ms half-sine) - confirming robustness in high-energy transient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin for protected circuitry. |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - verified breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 11.2 V at 53.6 A - clamping voltage under full 600 W 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - peak pulse power handling capability with standard 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity. |
| IPPM | 53.6 A - peak pulse current corresponding to VC = 11.2 V; directly usable for PCB trace sizing and layout derating. |
| TJ max. | +150 °C - maximum junction temperature; supports reliable operation in enclosed industrial enclosures without active cooling. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with JEDEC MS-012AC. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return plane; must handle full IPPM surge current without voltage rise exceeding system tolerance. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., VCC, signal); band-marked end; carries full transient current during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly laid-out designs. |
| 11.2 V clamping voltage at 53.6 A | Limits voltage overshoot across protected ICs or MOSFETs during worst-case transients, preserving device reliability. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without preconditioning or baking, reducing manufacturing complexity. |
| Glass passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) over temperature and lifetime, critical for low-power sensor nodes. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and IPC/JEDEC J-STD-020; suitable for global industrial and telecom deployments. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O against back-EMF spikes from relay and solenoid switching. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between MOSFET gate and source, referenced to local ground plane. Use Value: Limits gate-source voltage to ≤11.2 V during 53.6 A inductive kick, preventing gate oxide rupture and ensuring >100,000-cycle reliability. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between LIN line and chassis ground, with VWM = 6.5 V matching nominal 5 V supply rail. Use Value: Clamps 12 V system surges to ≤11.2 V within <1 ns, maintaining LIN physical layer integrity per ISO 17987-2. |
| Telecom Power Supplies | Consumer IoT Sensor Hubs |
|
Use Scenario: Input-stage protection for 5 V/12 V DC-DC converters subjected to lightning-induced surges on PoE or AC adapter inputs. IC Role / Device Role / Timing Role: Primary-line TVS mounted upstream of input filter, sized for 600 W pulse handling with thermal relief via 5 mm² copper pads. Use Value: Absorbs 10/1000 µs surges up to 53.6 A without degradation, enabling EN 61000-4-5 Level 4 compliance without additional stages. |
Use Scenario: ESD protection for I²C and UART lines connecting environmental sensors (temperature, humidity) to host MCU. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed inline on each signal line, with cathode tied to VDD and anode to ground. Use Value: Maintains signal integrity with <1 pF junction capacitance (typ.) while clamping ±8 kV contact ESD per IEC 61000-4-2. |
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 | Bidirectional variant with same VWM (6.5 V), symmetric VBR (7.22–7.98 V), and identical PPPM/VC; no polarity marking. | Required for AC-coupled or floating signal lines (e.g., RS-485, audio), where bidirectional clamping is mandatory. | Select SMBJ6.5CA-E3/5B only when protecting differential or non-ground-referenced signals; not interchangeable with SMBJ6.5A-E3/5B in unidirectional configurations. |
| SMAJ6.5A-E3/61 | Same electrical specs but in smaller SMA (DO-214AC) package (4.57 mm × 2.62 mm); lower PPPM = 400 W; RθJA = 130 °C/W. | Suitable for space-constrained consumer boards with lower surge exposure; not recommended for industrial 600 W requirements. | Choose SMAJ6.5A-E3/61 only if board area is critical and surge threat level is limited to IEC 61000-4-5 Level 2; verify thermal margin with reduced pad area. |
Compared with SMBJ6.5CA-E3/5B and SMAJ6.5A-E3/61, the SMBJ6.5A-E3/5B provides optimal balance of 600 W surge capacity, SMB package robustness, and unidirectional precision for grounded DC rails - making it the preferred choice for industrial power and interface protection where polarity and energy rating are non-negotiable.
Availability
SMBJ6.5A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMBJ6.5A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure equipment where failure resilience is mission-critical.
FAQ
What is the clamping voltage of SMBJ6.5A-E3/5B at its rated peak pulse current?
The SMBJ6.5A-E3/5B has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 53.6 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ6.5A-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ6.5A-E3/5B suitable for automotive applications?
The SMBJ6.5A-E3/5B is a commercial-grade part (E3 suffix) and not AEC-Q101 qualified. For automotive use, Vishay offers the SMBJ6.5AHE3_B variant (HE3 suffix), which meets AEC-Q101 stress testing requirements. The SMBJ6.5A-E3/5B may be used in non-safety-critical automotive accessory circuits only after full system-level validation - but SMBJ6.5A-E3/5B itself carries no automotive qualification.
What does the "-E3/5B" suffix indicate in SMBJ6.5A-E3/5B?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/5B" specifies packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-volume SMT assembly and is documented in Vishay's ordering information table (Document 88392, page 3).
How does SMBJ6.5A-E3/5B differ from SMBJ6.5CA-E3/5B?
The SMBJ6.5A-E3/5B is unidirectional with cathode band marking and intended for DC line protection; SMBJ6.5CA-E3/5B is bidirectional, symmetric in both directions, and lacks polarity marking. Their VWM, VBR, VC, and PPPM are identical, but they are not functionally interchangeable without circuit redesign - SMBJ6.5A-E3/5B cannot protect AC or floating signals.
What is the maximum reverse leakage current of SMBJ6.5A-E3/5B at its stand-off voltage?
At VWM = 6.5 V and TA = 25 °C, the SMBJ6.5A-E3/5B exhibits a maximum reverse leakage current (ID) of 500 µA. This value is confirmed in Vishay's Electrical Characteristics table (Document 88392, page 2) and remains below 1 µA at VWM ≤ 5.0 V - critical for low-power battery-operated sensor nodes.
SMBJ6.5A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ6.5A-E3/5B FAQ
1.How can I place an order for SMBJ6.5A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5A-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 SMBJ6.5A-E3/5B reliable?
The price and inventory of SMBJ6.5A-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 SMBJ6.5A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ6.5A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5A-E3/5B?
SMBJ6.5A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5A-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 SMBJ6.5A-E3/5B?
For technical support, including SMBJ6.5A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5A-E3/5B requirements.
6.How does Aetrix verify that SMBJ6.5A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5A-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 SMBJ6.5A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ6.5A-E3/5B?
All SMBJ6.5A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5A-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 SMBJ6.5A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ6.5A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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