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Vishay General Semiconductor - Diodes Division SMBJ6.5-E3/5B
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- Part No.:
- SMBJ6.5-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5-E3/5B.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,072
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Product details
Overview
SMBJ6.5-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 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 (IPPM), 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 SMBJ6.5-E3/5B datasheet, SMBJ6.5-E3/5B pinout, SMBJ6.5-E3/5B application, or SMBJ6.5-E3/5B equivalent, key selection criteria include unidirectional polarity, 11.2 V clamping performance at rated surge current, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<500 µA at VWM), while its low incremental surge resistance enables rapid energy diversion during transient events.
The SMBJ6.5-E3/5B is rated for 150 °C maximum junction temperature and exhibits a +0.061 %/°C temperature coefficient of VBR. Thermal resistance is 100 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, supporting reliable operation under repetitive surge conditions up to 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - tight breakdown window ensures predictable turn-on across production lots |
| VC @ IPPM | 11.2 V at 53.6 A - clamping voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 600 W - peak pulse power handling capability with standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges |
| ID @ VWM | ≤500 µA - reverse leakage current at stand-off voltage; low value minimizes standby power loss in battery-powered systems |
| TJ max | +150 °C - maximum junction temperature; supports operation in high-ambient industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm length, 4.06 mm width, and 2.20 mm height; compatible with JEDEC MS-012AC |
Pinout & Package
Package: SMB (DO-214AA), unidirectional configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge or bias |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., VCC or signal); initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV surge) on 50 Ω source impedance without derating |
| Glass passivated chip junction | Ensures long-term VBR stability and low parameter drift over temperature and lifetime |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-induced popcorn failure |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709E material restrictions |
| Low profile SMB package | Height ≤2.20 mm allows use in space-constrained applications such as portable telecom modules and automotive ECUs |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from relay and solenoid switching. IC Role / Device Role: Unidirectional TVS placed between MOSFET gate and source to clamp negative-going transients. Use Value: 11.2 V clamping voltage prevents gate oxide damage while maintaining logic-level compatibility with 5 V or 3.3 V controllers. |
Use Scenario: Shielding LIN bus transceivers and sensor inputs from load dump and jump-start surges in 12 V vehicle networks. IC Role / Device Role: Standoff-rated TVS on power rail input to absorb >100 V transients per ISO 7637-2 Pulse 5a. Use Value: 6.5 V VWM provides headroom above nominal 5.5 V regulator output while clamping to safe levels for downstream analog front-ends. |
| Telecom Power Supplies | Consumer IoT Sensor Nodes |
|
Use Scenario: Input-stage surge suppression on AC/DC adapter secondary-side outputs feeding PoE-powered equipment. IC Role / Device Role: Primary-line TVS on +5 V or +12 V DC rails to meet EN 61000-4-5 2 kV differential mode immunity. Use Value: 600 W rating sustains repeated 10/1000 µs surges without degradation, verified per AEC-Q200 stress profiles. |
Use Scenario: ESD protection for I²C and UART lines connecting environmental sensors to MCU in battery-operated smart home devices. IC Role / Device Role: Low-leakage (≤500 µA) unidirectional TVS on bidirectional data lines referenced to local ground. Use Value: Sub-12 V clamping preserves signal integrity for 3.3 V logic while meeting IEC 61000-4-2 ±8 kV contact discharge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A-E3/52 | Same electrical specs and SMB package; differs only in tape-and-reel packaging (750 pcs vs. 3200 pcs per reel) | No functional difference; selected when smaller reel quantity aligns with SMT line changeover frequency | Preferred for low-volume prototyping or mixed-product runs where reel utilization is prioritized |
| SMCJ6.5A-E3/57T | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; same VWM/VBR/VC values | Used where higher surge margin is required (e.g., outdoor telecom enclosures), but requires PCB layout change | Chosen when system-level surge testing exceeds 600 W capability and board space permits larger footprint |
Compared with SMBJ6.5A-E3/52, the SMBJ6.5-E3/5B offers identical protection performance with optimized reel size for high-throughput manufacturing; versus SMCJ6.5A-E3/57T, it trades surge headroom for compactness and cost-making SMBJ6.5-E3/5B ideal for space-constrained, cost-sensitive designs requiring certified 600 W immunity.
Availability
SMBJ6.5-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, full traceability, and consistent RoHS compliance across production batches.
Supply support for SMBJ6.5-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 transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where repeatable clamping, low leakage, and AEC-Q101 qualification matter.
FAQ
What is the maximum clamping voltage of SMBJ6.5-E3/5B at its rated peak pulse current?
The SMBJ6.5-E3/5B has a maximum clamping voltage (VC) of 11.2 V at 53.6 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMBJ6.5-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ6.5-E3/5B suitable for automotive applications?
SMBJ6.5-E3/5B is RoHS-compliant and manufactured to commercial-grade specifications. While it shares the same die and electrical characteristics as AEC-Q101-qualified variants (e.g., SMBJ6.5HE3), the SMBJ6.5-E3/5B itself is not AEC-Q101 certified. For automotive use, designers should specify the HE3 or HM3 suffix versions. The SMBJ6.5-E3/5B remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated.
What does the "-E3/5B" suffix indicate in SMBJ6.5-E3/5B?
The "-E3" suffix denotes RoHS-compliant construction with matte tin-plated leads, while "/5B" specifies packaging in 13-inch diameter plastic tape-and-reel format containing 3200 units. This configuration supports high-speed automated pick-and-place assembly and is optimized for medium-to-high volume production. The SMBJ6.5-E3/5B is distinct from /52 (750-unit 7-inch reel) and /H (750-unit 7-inch reel with AEC-Q101 qualification) variants.
How does SMBJ6.5-E3/5B compare to bidirectional TVS diodes like SMBJ6.5CA?
The SMBJ6.5-E3/5B is unidirectional and intended for DC line protection where polarity is fixed, offering forward conduction capability and lower leakage at VWM. In contrast, SMBJ6.5CA is bidirectional, suited for AC or floating signal lines, with symmetrical clamping in both directions. The SMBJ6.5-E3/5B cannot replace SMBJ6.5CA in bidirectional applications without circuit redesign, as its anode-cathode asymmetry would cause unintended conduction.
What is the thermal resistance of SMBJ6.5-E3/5B, and how does it affect PCB layout?
The SMBJ6.5-E3/5B 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 junction temperatures under repetitive surge conditions, designers must provide adequate copper area and avoid excessive trace impedance. Reducing pad size or omitting thermal vias increases RθJA, potentially causing thermal runaway during sustained transient activity - a key consideration for SMBJ6.5-E3/5B layout validation.
SMBJ6.5-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 48.8A
- 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)
SMBJ6.5-E3/5B FAQ
1.How can I place an order for SMBJ6.5-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5-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 SMBJ6.5-E3/5B reliable?
The price and inventory of SMBJ6.5-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 SMBJ6.5-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ6.5-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5-E3/5B?
SMBJ6.5-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5-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 SMBJ6.5-E3/5B?
For technical support, including SMBJ6.5-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5-E3/5B requirements.
6.How does Aetrix verify that SMBJ6.5-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5-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 SMBJ6.5-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ6.5-E3/5B?
All SMBJ6.5-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5-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 SMBJ6.5-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ6.5-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5-E3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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