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Vishay General Semiconductor - Diodes Division SMCJ6.5CA-E3/57T
- Part No.:
- SMCJ6.5CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CA-E3/57T.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:733
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Product details
Overview
SMCJ6.5CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 6.5 V standoff voltage (VWM), 11.2 V maximum clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMCJ6.5CA-E3/57T datasheet, SMCJ6.5CA-E3/57T pinout, SMCJ6.5CA-E3/57T application, or SMCJ6.5CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, AEC-Q101 qualification eligibility (via HE3 suffix variants), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression across both polarities. Its breakdown voltage (VBR) ranges from 7.22 V to 7.98 V at 10 mA test current, with temperature coefficient of +0.061 %/°C - enabling stable clamping performance over -55 °C to +150 °C junction temperature range.
The SMCJ6.5CA-E3/57T exhibits fast response time (<1 ps), low clamping ratio (VC/VWM ≈ 1.72), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its glass-passivated junction and matte tin-plated leads ensure reliability under thermal cycling and solderability per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum reverse standoff voltage before clamping begins; defines safe operating margin below circuit operating voltage. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - ensures consistent avalanche initiation across production lots and temperature. |
| VC @ IPPM | 11.2 V at 133.9 A - peak clamped voltage during 10/1000 μs surge; determines protected IC's voltage stress limit. |
| PPPM | 1500 W - peak transient energy handling capacity; supports robust protection against ISO 7637-2 Pulse 1/2/5a in automotive systems. |
| ID @ VWM | 500 μA - low leakage at rated standoff, minimizing standby power loss in battery-powered sensor nodes. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial motor control enclosures. |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; requires minimum 8.0 mm × 8.0 mm copper pad for full derating. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; symmetric with cathode for bidirectional operation. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; electrically identical to anode in CA-series devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Withstands high-energy transients such as EFT bursts and inductive switch-off spikes in industrial PLC I/O modules. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-induced failure. |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage exposure to downstream logic or analog front-end components during surge events. |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications including body electronics and ADAS sensor interfaces. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADCs by limiting voltage to ≤11.2 V during 10/1000 μs surges. |
Use Scenario: Safeguarding RS-485, RS-232, and digital input channels in programmable logic controllers and motor drives exposed to field wiring noise. IC Role / Device Role / Timing Role: Primary transient suppressor on data line pairs, coordinated with common-mode chokes for differential noise rejection. Use Value: Maintains signal integrity under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) testing up to 1 kV/2 kV line-to-ground. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side overvoltage suppression on DC output rails of wall adapters and USB PD chargers subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Fast-acting clamp parallel to load, activated within picoseconds to divert surge energy away from LDOs and PMICs. Use Value: Eliminates need for series resistors or additional filtering while meeting UL 62368-1 transient immunity requirements. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers in network edge equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protector on twisted-pair inputs, working with gas discharge tubes (GDTs) for staged surge handling. Use Value: Limits let-through voltage to <12 V during 10/1000 μs 6 kV surges, preserving PHY functionality and reducing bit error rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0CA | Lower PPPM (500 W), smaller SMA package (DO-214AC), higher VC (11.7 V at 43.5 A) | Targeted at space-constrained consumer ports; insufficient for 1500 W automotive pulses | Select when board area is critical and surge energy is ≤500 W (e.g., USB 2.0 data lines). |
| SMCJ6.8CA | Higher VWM (6.8 V), slightly higher VBR (7.56–8.36 V), same PPPM and package | Better margin for 6.5 V nominal rails with tighter tolerance; identical layout and thermal design | Prefer for designs requiring ≥0.3 V headroom above 6.5 V system voltage to avoid false triggering. |
Compared with SAC5.0CA and SMCJ6.8CA, the SMCJ6.5CA-E3/57T delivers optimal balance of clamping voltage tightness (7.22–7.98 V VBR), 1500 W surge capacity, and SMC package thermal performance - making it the preferred choice for industrial and automotive applications demanding high-energy transient resilience without layout redesign.
Availability
SMCJ6.5CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply, RoHS compliance, and tape-and-reel delivery for SMT production.
Supply support for SMCJ6.5CA-E3/57T 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 efficiency, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom infrastructure where robustness against ISO 7637, IEC 61000-4-5, and AEC-Q101 stress tests is mandatory.
FAQ
What is the clamping voltage of the SMCJ6.5CA-E3/57T under a 10/1000 μs surge?
The SMCJ6.5CA-E3/57T clamps to a maximum of 11.2 V when subjected to its rated peak pulse current of 133.9 A using a 10/1000 μs waveform. This value is measured per JEDEC standards and reflects worst-case voltage seen by protected circuitry during surge events. The SMCJ6.5CA-E3/57T maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is the SMCJ6.5CA-E3/57T suitable for automotive applications?
The SMCJ6.5CA-E3/57T itself is commercial-grade (E3 suffix), but Vishay offers AEC-Q101 qualified versions under HE3/HM3 suffixes (e.g., SMCJ6.5CAHE3_A). These variants undergo stress testing per AEC-Q101 and are approved for automotive body electronics and sensor modules. The SMCJ6.5CA-E3/57T shares identical electrical specs and package with those qualified parts, enabling direct qualification path.
How does the SMCJ6.5CA-E3/57T differ from unidirectional SMCJ6.5A?
The SMCJ6.5CA-E3/57T is bidirectional with symmetrical clamping in both polarities and no cathode band marking, whereas the unidirectional SMCJ6.5A has a marked cathode and only clamps in reverse bias. Both share identical VWM (6.5 V), VBR (7.22–7.98 V), and PPPM (1500 W), but the SMCJ6.5CA-E3/57T is required for AC-coupled or floating signal lines like RS-485 or audio paths where polarity reversal occurs.
What PCB layout guidance applies to the SMCJ6.5CA-E3/57T?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W PPPM and thermal resistance of 75 °C/W. Trace width should be ≥20 mils, and ground planes must be solid beneath the device. Avoid thermal reliefs on pads - the SMCJ6.5CA-E3/57T relies on copper mass for surge energy dissipation and junction temperature control.
Does the SMCJ6.5CA-E3/57T meet lead-free soldering requirements?
Yes, the SMCJ6.5CA-E3/57T is RoHS-compliant and rated for lead-free reflow with a maximum peak temperature of 260 °C per J-STD-020 MSL Level 1. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and it passes JESD 201 Class 2 whisker testing - ensuring long-term reliability in high-volume SMT assembly.
SMCJ6.5CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 133.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ6.5CA-E3/57T FAQ
1.How can I place an order for SMCJ6.5CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CA-E3/57T 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 SMCJ6.5CA-E3/57T reliable?
The price and inventory of SMCJ6.5CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CA-E3/57T?
SMCJ6.5CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CA-E3/57T 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 SMCJ6.5CA-E3/57T?
For technical support, including SMCJ6.5CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ6.5CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CA-E3/57T 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 SMCJ6.5CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CA-E3/57T?
All SMCJ6.5CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CA-E3/57T, 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 SMCJ6.5CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ6.5CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5CA-E3/57T Tags
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