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Vishay General Semiconductor - Diodes Division SMBJ6.5A/54
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- Part No.:
- SMBJ6.5A/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5A/54.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,074
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Product details
Overview
SMBJ6.5A/54 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails 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 (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive infotainment power inputs and industrial sensor I/O protection.
For engineers reviewing the SMBJ6.5A/54 datasheet, SMBJ6.5A/54 pinout, SMBJ6.5A/54 application, or SMBJ6.5A/54 equivalent, key selection criteria include clamping performance under 53.6 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, SMB (DO-214AA) package compatibility with automated SMT placement, and AEC-Q101 qualification path via HE3/HM3 suffix variants.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM), while the low incremental surge resistance enables rapid voltage limiting during fast transients like ESD or inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and delivers repeatable 600 W pulse handling at 0.01% duty cycle - validated on 5.0 mm × 5.0 mm copper pads per JEDEC test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin below system rail voltage. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - defines guaranteed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 11.2 V at 53.6 A - clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 600 W - peak transient power dissipation capability; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance; informs PCB copper pad sizing and layout cooling requirements. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and high-temperature industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes shunt path for surge diversion. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against severe transients such as load dump (ISO 7637-2) and lightning-induced surges without thermal runaway. |
| 11.2 V clamping voltage at 53.6 A | Limits voltage overshoot to safe levels for 5 V logic interfaces and automotive microcontrollers with 12 V supply rails. |
| Glass-passivated junction | Provides stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress. |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with high-volume automated assembly lines. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V power input of vehicle infotainment head units from load dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VBAT and chassis ground. Use Value: Clamps 12 V rail to ≤11.2 V during 53.6 A surges, preventing damage to downstream DC/DC converters and SoCs. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of factory-floor pressure sensors. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across signal and return paths. Use Value: Limits induced transients from nearby motor drives to <11.2 V, preserving ADC reference integrity and isolator input thresholds. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-level protection on VBUS line of USB Type-A ports in smart home hubs. IC Role / Device Role / Timing Role: Fast-response shunt clamp positioned upstream of USB power switch IC. Use Value: Responds in <1 ps to ±8 kV contact ESD (IEC 61000-4-2), holding clamped voltage below 11.2 V to avoid latch-up in USB controllers. | Use Scenario: Primary surge protection on twisted-pair DSL line interface cards in central office equipment. IC Role / Device Role / Timing Role: Front-end TVS mounted directly at RJ-11 connector entry point. Use Value: Absorbs 600 W common-mode surges (IEC 61000-4-5) while maintaining <1 µA leakage at 6.5 V, minimizing baseline line noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A-E3 | Same electrical specs; RoHS-compliant commercial-grade variant with "E3" suffix and 7″ tape/reel packaging. | No AEC-Q101 qualification; intended for non-automotive industrial or consumer use. | Select when automotive qualification is not required and cost-sensitive volume procurement applies. |
| SMBJ6.5AHE3_B/H | Identical electrical specs; adds AEC-Q101 qualification, halogen-free compliance, and enhanced reliability screening. | Required for automotive front-end modules, ADAS camera power supplies, and engine control unit interfaces. | Select when ISO/TS 16949 production environment or automotive OEM approval mandates AEC-Q101 compliance. |
Compared with SMBJ6.5A/54, SMBJ6.5A-E3 offers identical protection performance at lower qualification cost, while SMBJ6.5AHE3_B/H provides certified automotive robustness - enabling design reuse across commercial and automotive platforms with only suffix-driven BOM differentiation.
Availability
SMBJ6.5A/54 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, and telecom DSL line cards requiring stable component supply and traceable sourcing.
Supply support for SMBJ6.5A/54 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 and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in automotive, industrial, and communications infrastructure where robustness and repeatable clamping are critical.
FAQ
What is the maximum clamping voltage of SMBJ6.5A/54 and under what test condition?
The SMBJ6.5A/54 has a maximum clamping voltage (VC) of 11.2 V, measured at a peak pulse current (IPPM) of 53.6 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events.
Is SMBJ6.5A/54 suitable for automotive applications?
SMBJ6.5A/54 itself is a commercial-grade variant; however, its pin-compatible AEC-Q101 qualified equivalents - such as SMBJ6.5AHE3_B/H - are certified for automotive use. The SMBJ6.5A/54 shares identical electrical characteristics and SMB package, allowing direct layout reuse when upgrading to automotive-qualified versions.
What does the "/54" suffix indicate in SMBJ6.5A/54?
The "/54" suffix in SMBJ6.5A/54 denotes the preferred packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This matches Vishay's ordering code convention where "/5B" also indicates 13″ reels, and "/54" is an alternate reel code used by certain distribution channels for the same physical packaging.
How does SMBJ6.5A/54 compare to bidirectional variants like SMBJ6.5CA?
SMBJ6.5A/54 is unidirectional and conducts only in reverse bias, making it ideal for DC rail protection with defined polarity. In contrast, SMBJ6.5CA is bidirectional and symmetric - suitable for AC lines or data buses where polarity reversal occurs. Their VBR and VC values differ slightly due to internal structure, and SMBJ6.5A/54 cannot substitute for SMBJ6.5CA without circuit redesign.
What is the thermal resistance and how does it affect PCB layout for SMBJ6.5A/54?
SMBJ6.5A/54 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under 600 W pulses, designers must ensure adequate copper area and minimize trace length - especially for the cathode connection, which carries full surge current.
SMBJ6.5A/54 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/54 FAQ
1.How can I place an order for SMBJ6.5A/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5A/54 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/54 reliable?
The price and inventory of SMBJ6.5A/54 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/54 is usually 5 days.
3.What payment methods are accepted for SMBJ6.5A/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5A/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5A/54?
SMBJ6.5A/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5A/54 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/54?
For technical support, including SMBJ6.5A/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5A/54 requirements.
6.How does Aetrix verify that SMBJ6.5A/54 is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5A/54 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/54 meets industry standards.
7.What is the process for return or replacement of SMBJ6.5A/54?
All SMBJ6.5A/54 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5A/54, 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/54 part is unused and in its original packaging.
Return procedure for SMBJ6.5A/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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