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Vishay General Semiconductor - Diodes Division SMB8J6.5CA-E3/52
- Part No.:
- SMB8J6.5CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CA-E3/52.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J6.5CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power 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 clamping voltage (VC) at 1000 A peak pulse current (IPPM), and 800 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J6.5CA-E3/52 datasheet, SMB8J6.5CA-E3/52 pinout, SMB8J6.5CA-E3/52 application, or SMB8J6.5CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.72), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to divert surge energy away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity sensitivity, and its glass-passivated junction ensures stable leakage performance (<1 μA at VWM) across -55 °C to +150 °C operating range.
The SMB8J6.5CA-E3/52 delivers 800 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation when mounted per recommended pad layout. It meets J-STD-020 MSL Level 1 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for protected line. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown threshold range; ensures consistent turn-on behavior across production lot. |
| VC @ IPPM | 11.2 V at 1000 A - Clamping voltage under full-rated surge; limits downstream voltage stress to ≤11.2 V during worst-case transient. |
| PPPM | 800 W (10/1000 µs) - Peak surge power handling capacity; determines survivability against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
| IPPM | 1000 A - Peak pulse current rating; defines maximum transient energy the device can safely shunt without degradation. |
| Junction Temp Range | -55 °C to +150 °C - Full operational temperature envelope; supports under-hood automotive and industrial ambient environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking (unlike unidirectional variants which feature cathode band). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 1.52 mm lead width and 5.59 mm overall length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No designated anode/cathode; terminals are functionally identical - enables placement without orientation check during SMT assembly. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; provides mechanical robustness and thermal path to PCB copper pads (0.2" × 0.2" recommended per terminal). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and body control modules requiring long-term field reliability. |
| 800 W peak pulse power | Enables single-device protection against severe transients such as load dump (ISO 16750-2) and coupled lightning surges (IEC 61000-4-5 Level 4). |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces without additional series impedance. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk during manufacturing. |
| Glass-passivated junction | Ensures stable leakage current (<1 μA at VWM) and repeatable breakdown characteristics over lifetime and temperature cycling. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure/temperature sensors from ESD and inductive switching spikes in vehicle cabins and powertrain zones. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to limit transient voltage before it reaches signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 5 V analog front-ends and digital communication ICs during ISO 10605 ESD events and ISO 7637-2 Pulse 5a load dump. | Use Scenario: Shielding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Primary surge suppression element located between field wiring and precision op-amp input stage. Use Value: Maintains measurement integrity by limiting input voltage excursion to ≤11.2 V, avoiding saturation or rail-to-rail clipping of instrumentation amplifiers. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors on telecom access equipment subjected to induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Secondary-level protection device installed after gas discharge tube (GDT) primary stage to handle residual fast-rising transients. Use Value: Provides sub-nanosecond response to clamp 10/1000 µs surges up to 1 kV, preserving signal integrity on 100BASE-TX and 1000BASE-T interfaces. | Use Scenario: ESD hardening of USB 2.0 data lines (D+/D−) and VBUS in portable media players and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to suppress contact discharge per IEC 61000-4-2 ±15 kV. Use Value: Limits voltage overshoot to <12 V during ±8 kV contact discharge, preventing data corruption and PHY reset without degrading 480 Mbps signal rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CAHE3_B/I | AEC-Q101 qualified, halogen-free, 13" tape-and-reel (3200 pcs); identical electrical specs and package. | Targeted at high-volume automotive OEM programs requiring extended traceability and halogen-free compliance. | Select when full AEC-Q101 documentation, halogen-free certification, and large-batch delivery are required. |
| SMBJ6.5CA-E3/52 | Same VWM, VBR, VC, and PPPM, but rated for 1000 W (unidirectional only); bidirectional variant not available in SMBJ series. | Limited to unidirectional protection schemes; unsuitable for AC or differential signal lines without external polarity management. | Choose only for DC-only rails where polarity is fixed and higher 1000 W rating is needed - not a drop-in replacement for SMB8J6.5CA-E3/52. |
Compared with SMB8J6.5CAHE3_B/I, the SMB8J6.5CA-E3/52 offers commercial-grade qualification with smaller 7" reel packaging, while SMBJ6.5CA-E3/52 lacks bidirectional capability and cannot protect symmetrical signal paths - making SMB8J6.5CA-E3/52 uniquely suited for automotive sensor and industrial analog interface applications requiring polarity-agnostic clamping.
Availability
SMB8J6.5CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card protection, and consumer USB port ESD guard circuits requiring stable component supply, AEC-Q101 validation, and RoHS-compliant manufacturing.
Supply support for SMB8J6.5CA-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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMB8J series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMB8J6.5CA-E3/52 at its rated peak pulse current?
The SMB8J6.5CA-E3/52 has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 1000 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuitry downstream of SMB8J6.5CA-E3/52.
Is SMB8J6.5CA-E3/52 suitable for automotive applications?
Yes, SMB8J6.5CA-E3/52 is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (base P/NHE3 or P/NHM3 suffixes). Its construction - including glass-passivated junction, MSL Level 1 reflow compatibility, and -55 °C to +150 °C operating range - meets automotive environmental and reliability requirements. The SMB8J6.5CA-E3/52 is routinely used in engine control, ADAS sensor modules, and body electronics.
How does SMB8J6.5CA-E3/52 differ from unidirectional SMB10J6.5A-E3/52?
The SMB8J6.5CA-E3/52 is bidirectional with symmetric clamping in both polarities and no cathode marking, whereas SMB10J6.5A-E3/52 is unidirectional, features a cathode band, and delivers 1000 W (vs. 800 W) peak pulse power. Their VWM, VBR, and VC values differ slightly due to test condition variations (e.g., SMB10J6.5A lists VC = 11.2 V at 89.3 A, not 1000 A). SMB8J6.5CA-E3/52 is appropriate for AC or differential lines; SMB10J6.5A-E3/52 suits DC rails only.
What is the thermal resistance of SMB8J6.5CA-E3/52, and how does it affect layout?
SMB8J6.5CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To achieve rated power dissipation, Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad area increases thermal impedance and derates peak pulse power - so PCB layout must follow the recommended footprint to ensure SMB8J6.5CA-E3/52 performs to datasheet specifications.
Does SMB8J6.5CA-E3/52 have RoHS and halogen-free compliance?
SMB8J6.5CA-E3/52 carries the "E3" suffix, indicating RoHS-compliant, commercial-grade construction with matte tin-plated leads. It is not halogen-free; for halogen-free compliance, the equivalent part is SMB8J6.5CAHM3_X (e.g., SMB8J6.5CAHM3_B/I). Both meet JESD201 Class 2 whisker resistance and J-STD-002 solderability standards, but only HM3-suffixed variants satisfy halogen-free material categorization per Vishay doc# 99912.
SMB8J6.5CA-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):
- 71.4A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J6.5CA-E3/52 FAQ
1.How can I place an order for SMB8J6.5CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CA-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 SMB8J6.5CA-E3/52 reliable?
The price and inventory of SMB8J6.5CA-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 SMB8J6.5CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CA-E3/52?
SMB8J6.5CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CA-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 SMB8J6.5CA-E3/52?
For technical support, including SMB8J6.5CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CA-E3/52 requirements.
6.How does Aetrix verify that SMB8J6.5CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CA-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 SMB8J6.5CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CA-E3/52?
All SMB8J6.5CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CA-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 SMB8J6.5CA-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J6.5CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CA-E3/52 Tags
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