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Vishay General Semiconductor - Diodes Division SMBJ6.5CA-E3/52
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- Part No.:
- SMBJ6.5CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CA-E3/52.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,525
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Product details
Overview
SMBJ6.5CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤11.2 V at 53.6 A peak surge current - used for protecting MOSFETs, sensor interfaces, and I/O lines in industrial and telecom equipment.
For engineers reviewing the SMBJ6.5CA-E3/52 datasheet, SMBJ6.5CA-E3/52 pinout, SMBJ6.5CA-E3/52 application, or SMBJ6.5CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage relative to VWM, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
Thermal performance is defined by RθJA = 100 °C/W (on recommended pad layout) and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The device meets UL 497B recognition (QVGQ2) and is rated for 5.0 W steady-state power dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below circuit operating voltage |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - ensures reliable turn-on during overvoltage events without premature conduction |
| VC @ IPPM | ≤11.2 V at 53.6 A - clamping voltage limits stress on downstream ICs during 600 W transient surges |
| PPPM | 600 W (10/1000 µs waveform) - handles high-energy lightning-induced or inductive-switching transients |
| IPPM | 53.6 A - peak surge current capacity validated per Fig. 1 and derated above TA = 25 °C |
| Junction Temp Range | –55 °C to +150 °C - supports deployment in harsh industrial and automotive-adjacent environments |
| Package | SMB (DO-214AA) - low-profile, surface-mount package compatible with standard reflow profiles and J-STD-020 MSL Level 1 |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, UL 94 V-0 compliant compound, polarity-unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Acts as cathode in one direction, anode in the other - symmetrical conduction enables bidirectional protection without orientation dependency |
| Cathode | Transient current exit (either polarity) | Paired with Anode to form back-to-back diode structure; no band marking required per datasheet Note on bidirectional types |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating signal lines |
| 600 W peak pulse power | Withstands 10/1000 µs transients up to 53.6 A - exceeds IEC 61000-4-5 Level 4 surge immunity requirements when properly laid out |
| Low clamping ratio (VC/VWM) | 1.72 max (11.2 V / 6.5 V) - minimizes voltage overshoot across protected ICs during fast transients |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60% RH - supports standard SMT assembly without baking or special handling |
| RoHS-compliant & halogen-free option | E3 suffix denotes RoHS-compliant commercial grade; M3 suffix adds halogen-free compliance - meets global environmental directives |
Applications
| Industrial Motor Control Inputs | Automotive Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting encoder feedback lines and analog sensor inputs from inductive kickback in PLC I/O modules and servo drives. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching MCU ADC or comparator inputs. Use Value: Limits induced spikes to ≤11.2 V, preserving signal integrity and preventing latch-up in 3.3 V or 5 V interface ICs. |
Use Scenario: Safeguarding CAN/LIN bus transceivers and temperature/pressure sensor outputs in engine control units and body electronics. IC Role / Device Role / Timing Role: Secondary-level transient suppressor located after ESD diodes, absorbing higher-energy surges that bypass front-end protection. Use Value: Withstands repetitive 600 W pulses without degradation, extending system reliability in vibration-prone automotive harness environments. |
| Telecom Power Supply Rails | Consumer USB Data Lines |
|
Use Scenario: Clamping voltage surges on 12 V or 24 V DC input rails of PoE-powered switches and base station RF modules. IC Role / Device Role / Timing Role: Parallel-connected TVS providing coarse overvoltage protection upstream of DC-DC converters and LDOs. Use Value: Fast <1 ps response captures fast-rising transients from nearby lightning strikes or relay switching, reducing need for additional filtering stages. |
Use Scenario: Protecting USB 2.0 D+/D− lines in portable audio devices and smart home hubs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to minimize signal distortion while meeting IEC 61000-4-2 ±15 kV contact discharge. Use Value: Symmetrical clamping prevents data corruption during hot-plug events, maintaining full-speed USB signaling integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No functional difference; selected where halogen-free materials are mandated in final product certification | Direct material substitution when environmental compliance requires bromine/chlorine-free molding compound |
| SMAJ6.5CA-E3/A | Lower 400 W PPPM, SMA (DO-214AC) package, 10.3 V VC @ 35.3 A | Reduced surge handling; suitable only for lower-energy transients or space-constrained layouts where SMB footprint is unavailable | Use only if board area is limited and peak surge energy remains below 400 W; not interchangeable without layout change |
Compared with SMBJ6.5CA-E3/52, the M3 variant offers identical protection performance with halogen-free construction, while the SMAJ6.5CA-E3/A trades 33% lower pulse power and higher clamping for smaller footprint - requiring careful energy budget validation in surge-critical designs.
Availability
SMBJ6.5CA-E3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interfaces, and telecom power rail protection requiring stable component supply and long-term manufacturability.
Supply support for SMBJ6.5CA-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, MOSFETs, and optoelectronics with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SMBJ series targets robust transient suppression in harsh environments, engineered for high-reliability industrial, telecom, and automotive-adjacent systems where consistent clamping performance and long-term stability are critical.
FAQ
What does the "CA" suffix indicate in SMBJ6.5CA-E3/52?
The "CA" suffix in SMBJ6.5CA-E3/52 designates a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., SMBJ6.5A), this device provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses, or floating nodes where voltage polarity reversal occurs. Electrical characteristics including VBR, VC, and IPPM apply identically in either direction, and no polarity marking is present on the SMB package.
Is SMBJ6.5CA-E3/52 suitable for automotive applications?
SMBJ6.5CA-E3/52 is rated for operation from –55 °C to +150 °C and meets UL 497B recognition, but it is not AEC-Q101 qualified in the E3/52 configuration. For automotive use, Vishay specifies the HE3 or HM3 suffix variants (e.g., SMBJ6.5CAHE3_B/H) which undergo AEC-Q101 stress testing. Engineers must select the HE3/HM3 version - not SMBJ6.5CA-E3/52 - when qualifying for under-hood or safety-critical vehicle subsystems.
How is the clamping voltage VC of SMBJ6.5CA-E3/52 measured and applied in circuit design?
VC for SMBJ6.5CA-E3/52 is specified as ≤11.2 V at IPPM = 53.6 A using a 10/1000 µs double-exponential surge waveform. In circuit design, this value defines the maximum voltage seen by downstream components during worst-case transient events. To ensure protection, the VC must remain below the absolute maximum rating of the protected IC - for example, keeping ≤11.2 V ensures safety for 12 V tolerant interfaces or provides margin for 5 V logic with external series impedance.
What PCB layout practices maximize the surge-handling capability of SMBJ6.5CA-E3/52?
To achieve the rated 600 W peak pulse power, SMBJ6.5CA-E3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. Short, wide traces to ground/power planes reduce inductance and prevent voltage overshoot during fast transients. Avoid thermal relief on pads - solid copper connections improve heat dissipation and sustain repetitive surge capability. Placement within 2 mm of the protected connector or IC pin further minimizes parasitic inductance.
Does SMBJ6.5CA-E3/52 require derating at elevated ambient temperatures?
Yes, SMBJ6.5CA-E3/52 requires thermal derating above TA = 25 °C. The datasheet provides Fig. 2 showing pulse power and current derating curves - for example, at TA = 75 °C, the 600 W PPPM rating drops to approximately 420 W. Designers must consult Figure 2 to determine usable IPPM and PPPM values based on actual board temperature, especially in enclosed industrial enclosures or near heat-generating components.
SMBJ6.5CA-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:
- -
- 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):
- 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)
SMBJ6.5CA-E3/52 FAQ
1.How can I place an order for SMBJ6.5CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CA-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 SMBJ6.5CA-E3/52 reliable?
The price and inventory of SMBJ6.5CA-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 SMBJ6.5CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CA-E3/52?
SMBJ6.5CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CA-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 SMBJ6.5CA-E3/52?
For technical support, including SMBJ6.5CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ6.5CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CA-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 SMBJ6.5CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CA-E3/52?
All SMBJ6.5CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CA-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 SMBJ6.5CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ6.5CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CA-E3/52 Tags
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