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Vishay General Semiconductor - Diodes Division SMBJ6.5A-E3/52
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- Part No.:
- SMBJ6.5A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5A-E3/52.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,453
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Product details
Overview
SMBJ6.5A-E3/52 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 capability with a 10/1000 µs waveform - deployed in automotive body control modules to protect CAN transceiver inputs against load dump and inductive switching transients.
For engineers reviewing the SMBJ6.5A-E3/52 datasheet, SMBJ6.5A-E3/52 pinout, SMBJ6.5A-E3/52 application, or SMBJ6.5A-E3/52 equivalent, key selection criteria include clamping performance under 53.6 A surge, thermal resistance (RθJA = 100 °C/W), RoHS-compliant matte tin plating, SMB (DO-214AA) package compatibility with automated placement, and unidirectional polarity marking via cathode band.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (7.22–7.98 V), it avalanches to divert surge current away from downstream ICs. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients (response time < 1 ns), while the glass-passivated junction guarantees stable leakage (< 500 µA at VWM) across -55 °C to +150 °C operating range.
The device is rated for 600 W peak pulse power (10/1000 µs), derated linearly above 25 °C per Fig. 2, and supports repetitive surges at 0.01 % duty cycle. Mounting on 0.2" × 0.2" copper pads achieves specified thermal performance, and its MSL Level 1 rating permits standard SMT reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.5 V - Maximum continuous reverse working voltage before significant leakage; sets minimum system operating margin. |
| VBR (Breakdown Voltage) | 7.22–7.98 V at 10 mA - Confirmed avalanche initiation range; defines turn-on threshold under standardized test conditions. |
| VC (Clamping Voltage) | 11.2 V at IPPM = 53.6 A - Measured voltage across device during 10/1000 µs surge; determines maximum stress on protected circuit. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity for single 10/1000 µs transient; enables robust protection against ISO 7637-2 Pulse 1/2a/5a events. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on recommended pad layout; dictates required board copper area for thermal management. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments without derating. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" length, 0.155" width, and 0.096" height; compatible with standard 7" tape-and-reel (E3/52). |
Pinout & Package
Package: SMB (DO-214AA), unidirectional configuration with cathode indicated by molded band. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or common return path; completes clamping loop during reverse surge events. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 5 V rail or CAN_H); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV) and ISO 7637-2 Pulse 5a (75 V/300 ms) without external series impedance. |
| Clamping ratio VC/VBR ≤ 1.55 | Ensures tight voltage limiting - 11.2 V clamping at 53.6 A versus 7.22 V min VBR - minimizing stress on 3.3 V/5 V logic interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns or baking requirements. |
| AEC-Q101 qualified variant available | HE3 suffix versions are automotive-grade qualified; SMBJ6.5A-E3/52 is commercial-grade but shares identical die and package design. |
| UL 497B recognized (QVGQ2) | Validated for telecom and industrial signal-line protection per Underwriters Laboratories safety standard for protectors. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO pins and LIN bus transceivers from load dump spikes (up to 35 V) and relay coil flyback in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between 5 V supply rail and ground, triggered within < 1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤11.2 V during 53.6 A surge, preventing latch-up or gate oxide damage in 5 V tolerant MCUs. |
Use Scenario: Shields 24 V digital input circuits in programmable logic controllers from field-wiring induced surges (e.g., accidental 110 VAC contact). IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input optocoupler terminals to clamp reverse transients before isolation barrier. Use Value: Maintains 6.5 V standoff while clamping 24 V line surges to 11.2 V, ensuring optocoupler CTR stability and avoiding false triggering. |
| USB 2.0 Data Line ESD Protection | DC-DC Converter Input Stage |
|
Use Scenario: Installed on USB D+ and D− lines near connector to suppress IEC 61000-4-2 ±15 kV contact discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 150 pF at 0 V) unidirectional clamp referenced to ground, preserving signal integrity up to 480 Mbps. Use Value: Clamps ESD pulses to ≤11.2 V within nanoseconds, preventing damage to USB PHY transceivers without degrading rise/fall times. |
Use Scenario: Placed across input capacitor of buck converter powering FPGA core voltage, absorbing MOSFET switching spikes and hot-swap inrush. IC Role / Device Role / Timing Role: Primary overvoltage limiter upstream of input filter, activated only during fault conditions exceeding 6.5 V. Use Value: Absorbs 600 W transient energy without degradation, maintaining input rail stability and avoiding converter shutdown during 100 µs spikes. |
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-E3/52 | Bidirectional version; symmetric VBR (7.22–7.98 V) in both polarities; no polarity marking. | Required for AC-coupled or floating signal lines (e.g., RS-485, Ethernet PHY) where reverse polarity surges occur. | Select SMBJ6.5CA-E3/52 only if bidirectional clamping is mandated; SMBJ6.5A-E3/52 offers lower leakage in DC-biased applications. |
| SMAJ6.5A-E3/61 | Lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W); same VWM/VBR/VC specs. | Suitable for space-constrained consumer electronics with lower surge exposure (e.g., USB-C PD accessories). | Choose SMAJ6.5A-E3/61 only when board area is critical and 400 W rating suffices; SMBJ6.5A-E3/52 provides 50 % higher surge margin. |
Compared with SMBJ6.5CA-E3/52 and SMAJ6.5A-E3/61, SMBJ6.5A-E3/52 delivers optimal balance of 600 W surge capacity, thermal performance (RθJA = 100 °C/W), and commercial-grade reliability in SMB footprint - making it preferred for industrial and automotive DC rail protection where unidirectional surges dominate.
Availability
SMBJ6.5A-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, USB interface protection, and DC-DC converter input staging requiring stable component supply and full traceability.
Supply support for SMBJ6.5A-E3/52 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 MOSFETs with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The SMBJ series was engineered specifically for surface-mount transient suppression in harsh environments - delivering consistent clamping, AEC-Q101 qualification paths, and UL recognition for safety-critical power and signal line protection.
FAQ
What is the maximum clamping voltage of SMBJ6.5A-E3/52 under surge conditions?
The SMBJ6.5A-E3/52 has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 53.6 A using a 10/1000 µs waveform. This value is measured per JEDEC standards and represents the highest voltage that will appear across the device during a defined transient event, directly limiting stress on downstream components protected by the SMBJ6.5A-E3/52.
Is SMBJ6.5A-E3/52 RoHS-compliant and lead-free?
Yes, SMBJ6.5A-E3/52 is RoHS-compliant and lead-free. The "E3" suffix explicitly denotes Vishay's commercial-grade, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2 requirements - verified per document 88392 revision 09-Jan-2024.
Can SMBJ6.5A-E3/52 be used in automotive applications?
SMBJ6.5A-E3/52 is commercial-grade and not AEC-Q101 qualified; however, its underlying die and SMB package are identical to the AEC-Q101 qualified SMBJ6.5AHE3 variant. For non-safety-critical automotive functions (e.g., infotainment power rails), SMBJ6.5A-E3/52 may be deployed with customer validation - but certified designs require the HE3 suffix version of SMBJ6.5A-E3/52.
What is the thermal resistance of SMBJ6.5A-E3/52, and how does it affect PCB layout?
The SMBJ6.5A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value requires adequate copper pour area to maintain junction temperature below 150 °C during repetitive surges; reducing pad size increases RθJA and risks thermal runaway during sustained transient activity involving SMBJ6.5A-E3/52.
How does SMBJ6.5A-E3/52 differ from SMBJ6.5CA-E3/52?
SMBJ6.5A-E3/52 is unidirectional with cathode band marking and specified parameters only for reverse-bias operation, while SMBJ6.5CA-E3/52 is bidirectional - exhibiting matched 7.22–7.98 V breakdown in both directions and no polarity marking. SMBJ6.5A-E3/52 offers lower reverse leakage (<500 µA at 6.5 V) versus SMBJ6.5CA-E3/52's higher ID limit, making it preferable for DC-biased protection where leakage current matters.
SMBJ6.5A-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ6.5A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5A-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ6.5A-E3/52 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-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ6.5A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5A-E3/52?
SMBJ6.5A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5A-E3/52 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-E3/52?
For technical support, including SMBJ6.5A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5A-E3/52 requirements.
6.How does Aetrix verify that SMBJ6.5A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ6.5A-E3/52?
All SMBJ6.5A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ6.5A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5A-E3/52 Tags
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