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Vishay General Semiconductor - Diodes Division SMCJ6.5C-E3/9AT
- Part No.:
- SMCJ6.5C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5C-E3/9AT.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,115
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Product details
Overview
SMCJ6.5C-E3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for clamping voltage transients on signal or power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 133.9 A peak pulse current (IPPM), and 11.2 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMCJ6.5C-E3/9AT datasheet, SMCJ6.5C-E3/9AT pinout, SMCJ6.5C-E3/9AT application, or SMCJ6.5C-E3/9AT equivalent, this device is selected for robust ESD and surge immunity in bi-directional signal paths where polarity-agnostic protection, AEC-Q101 qualification, and low clamping ratio (<1.73×VWM) are required.
Technical Context
The SMCJ6.5C-E3/9AT operates as a bi-directional avalanche diode with symmetrical breakdown in both polarities, enabling protection of AC-coupled or floating lines without polarity concerns. Its glass-passivated junction ensures stable leakage and repeatable clamping performance under repetitive surge stress.
It complies with ANSI/IEEE C62.35 for transient suppressors and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting operation up to 150 °C junction temperature with appropriate PCB copper pad layout (8.0 mm × 8.0 mm per terminal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range ensuring reliable turn-on during transients while avoiding false triggering. |
| VC @ IPPM | 11.2 V - Clamped voltage at 133.9 A surge; limits downstream component stress to ≤11.2 V during worst-case 10/1000 µs events. |
| PPPM | 1500 W - Peak pulse power handling capability; supports high-energy lightning-induced surges per IEC 61000-4-5. |
| ID @ VWM | 500 µA - Reverse leakage at rated stand-off; low enough to avoid signal integrity degradation in high-impedance sensor lines. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per AEC stress test plan. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional configuration with no polarity marking. Case meets UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No functional distinction between terminals; either side connects to protected line, other to ground or reference plane. |
| Case (cathode band absent) | Non-polarized package body | Eliminates orientation dependency during automated placement; simplifies PCB layout for differential or AC signals. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC, differential, or floating bus lines without external polarity management circuitry. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis modules requiring long-term surge reliability under thermal and mechanical stress. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 133.9 A - sufficient for Level 4 IEC 61000-4-5 (4 kV line-to-ground) in properly coupled systems. |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices, reducing risk of latch-up or gate oxide damage. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-throughput SMT assembly lines. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between sensor output and microcontroller ADC input, referenced to chassis ground. Use Value: Limits transient excursions to ≤11.2 V, preventing ADC saturation and preserving measurement fidelity during 100 V/50 ms load dump events. |
Use Scenario: Guarding CAN_H and CAN_L lines against ESD and coupled surges in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Paired SMCJ6.5C-E3/9AT devices (one per line) referenced to common ground, absorbing common-mode and differential transients. Use Value: Maintains CAN signal integrity by clamping fast-rising edges (tR < 1 ns) without adding capacitance that degrades bit rate (>1 Mbps). |
| Consumer Power Adapter Input Stage | Telecom DSL Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in 12 V wall adapters subjected to lightning-induced surges on DC output cables. IC Role / Device Role / Timing Role: Bi-directional TVS connected across +12 V and GND outputs, upstream of LDO regulators. Use Value: Absorbs 1500 W surges without failure, preventing regulator latch-up and maintaining regulated output during EN 61000-4-5 testing. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: SMCJ6.5C-E3/9AT deployed across each pair (tip/ring) referenced to system ground in line card front-end. Use Value: Provides sub-12 V clamping with <500 µA leakage at 6.5 V, ensuring minimal impact on line impedance and DSL signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (150 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD); not rated for IEC 61000-4-5 line surges | Select when board space is constrained and surge energy is limited to <400 W. |
| SMCJ6.5CAHE3/9AT | Identical electrical specs but AEC-Q101 qualified (HE3 suffix); same DO-214AB package and 1500 W rating | Required for automotive OEM designs needing full AEC-Q101 documentation and traceability | Choose for Tier 1 automotive programs where qualification evidence is mandatory. |
Compared with SMCJ6.5C-E3/9AT, SMAJ6.5CA-E3/61T trades surge capacity for size, while SMCJ6.5CAHE3/9AT adds formal AEC-Q101 compliance without altering electrical behavior - making the latter a drop-in upgrade for automotive validation, and the former a space-saving alternative for consumer-grade surge margins.
Availability
SMCJ6.5C-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom line interface applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMCJ6.5C-E3/9AT 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh environments; it was engineered specifically for AEC-Q101 compliance and 1500 W surge robustness in automotive and industrial power/signal interfaces.
FAQ
What is the clamping voltage of the SMCJ6.5C-E3/9AT at its rated peak pulse current?
The SMCJ6.5C-E3/9AT has a maximum clamping voltage (VC) of 11.2 V when subjected to its peak pulse current (IPPM) of 133.9 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components during standardized surge events. The SMCJ6.5C-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ6.5C-E3/9AT suitable for automotive applications?
Yes, the SMCJ6.5C-E3/9AT is RoHS-compliant and manufactured to meet AEC-Q101 requirements for transient voltage suppressors, including stress tests for temperature cycling, high-temperature reverse bias, and surge endurance. While the base part (E3 suffix) carries commercial-grade qualification, its construction and test data align with automotive environmental demands - confirmed in Vishay document 88394. The SMCJ6.5C-E3/9AT is widely deployed in engine control, body electronics, and ADAS sensor interfaces.
How does the bi-directional design of the SMCJ6.5C-E3/9AT affect PCB layout?
The SMCJ6.5C-E3/9AT has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This allows symmetric routing on differential pairs or AC-coupled lines without concern for anode/cathode alignment. Its DO-214AB package requires 8.0 mm × 8.0 mm copper pads per terminal for optimal thermal and surge performance - a requirement explicitly defined in the Vishay datasheet for SMCJ6.5C-E3/9AT.
What is the maximum reverse leakage current for the SMCJ6.5C-E3/9AT at its stand-off voltage?
The SMCJ6.5C-E3/9AT exhibits a maximum reverse leakage current (ID) of 500 µA at its rated stand-off voltage (VWM) of 6.5 V and TA = 25 °C. This low leakage ensures minimal loading on high-impedance nodes such as sensor outputs or communication bus lines, preserving signal integrity and power efficiency. Leakage remains within specification up to +150 °C junction temperature as verified in Vishay's thermal characterization data for SMCJ6.5C-E3/9AT.
Does the SMCJ6.5C-E3/9AT require derating at elevated ambient temperatures?
Yes, the SMCJ6.5C-E3/9AT must be derated above TA = 25 °C per Figure 2 in Vishay document 88394. Its peak pulse power (PPPM) decreases linearly with rising ambient temperature - e.g., at TA = 85 °C, usable PPPM drops to approximately 75% of 1500 W. Derating is based on thermal resistance (RθJA = 75 °C/W) and junction temperature limit (TJ max = 150 °C). Designers must apply this derating when sizing SMCJ6.5C-E3/9AT for enclosed or high-temperature environments.
SMCJ6.5C-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 122A
- 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)
SMCJ6.5C-E3/9AT FAQ
1.How can I place an order for SMCJ6.5C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5C-E3/9AT 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 SMCJ6.5C-E3/9AT reliable?
The price and inventory of SMCJ6.5C-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ6.5C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5C-E3/9AT?
SMCJ6.5C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5C-E3/9AT 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 SMCJ6.5C-E3/9AT?
For technical support, including SMCJ6.5C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ6.5C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5C-E3/9AT 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 SMCJ6.5C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ6.5C-E3/9AT?
All SMCJ6.5C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5C-E3/9AT, 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 SMCJ6.5C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ6.5C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5C-E3/9AT Tags
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