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Renesas NNCD6.8J-T1-AT
- Part No.:
- NNCD6.8J-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
NNCD6.8J-T1-AT.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:5,285
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Product details
Overview
NNCD6.8J-T1-AT from Renesas Electronics is an ESD noise clipping diode designed for electrostatic discharge protection in external interface circuits. It features a breakdown voltage of 6.2–7.1 V (at 5 mA), 90 pF capacitance at 1 MHz, ≤2 µA reverse leakage at 2 V, 30 kV ESD withstand (IEC 61000-4-2 contact discharge), and 150 mW power dissipation in a 2-pin ultra-super-mini-mold flat package.
For engineers reviewing the NNCD6.8J-T1-AT datasheet, NNCD6.8J-T1-AT pinout, NNCD6.8J-T1-AT application, or NNCD6.8J-T1-AT equivalent, key selection criteria include clamping voltage stability under transient surge, low junction capacitance for high-speed signal integrity, IEC 61000-4-2 compliance level, thermal derating above 25°C, and compatibility with automated SMT assembly in space-constrained interfaces.
Technical Context
This diode operates as a unidirectional voltage-clamping device, leveraging silicon PN-junction avalanche behavior to limit transient overvoltage on protected lines. Its 6.8 V nominal breakdown enables robust clamping for 5 V logic-level interfaces while maintaining low leakage and minimal capacitive loading.
The ultra-super-mini-mold (flat) package supports high-density PCB layouts and reflow-compatible surface-mount assembly. Thermal performance is characterized by a transient thermal impedance of 833°C/W (t = 1 ms) and power derating to zero at 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.2–7.1 V at 5 mA - defines minimum clamping threshold for 5 V bus protection |
| Capacitance | 90 pF at 1 MHz, VR = 0 V - ensures minimal signal distortion on USB/UART/I²C lines |
| Reverse Leakage | ≤2 µA at VR = 2 V - avoids DC loading on sensitive analog or low-power digital inputs |
| ESD Withstand | 30 kV contact discharge (IEC 61000-4-2) - meets industrial-grade interface immunity requirements |
| Surge Power | 85 W (10 µs pulse, single event) - handles fast ESD transients without failure |
| Package | 2-pin ultra-super-mini-mold flat (1.4 × 1.0 × 0.5 mm) - enables 0603-equivalent footprint with cathode marking |
Pinout & Package
Package: 2-pin ultra-super-mini-mold flat (FLAT TYPE), dimensions 1.4 ± 0.1 mm × 1.0 ± 0.1 mm × 0.5 MAX mm, cathode indicated by mark on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction | Connected to protected line (e.g., USB D+, UART TX); clamps to ground when voltage exceeds VBR |
| Cathode | Current exit during forward conduction; reference terminal | Connected to system ground or low-impedance return path; determines polarity of clamping action |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 compliant ESD protection | 30 kV contact discharge rating - eliminates need for external TVS staging in Class 4-compliant designs |
| Low clamping capacitance | 90 pF at 0 V - preserves signal rise/fall times on 10 Mbps UART or 400 kHz I²C buses |
| High-density SMT package | 1.4 × 1.0 mm footprint - fits within tight spacing constraints of portable electronics PCBs |
| Controlled breakdown tolerance | ±0.9 V window (6.2–7.1 V) - ensures predictable clamping across production lots and temperature |
Applications
| USB 2.0 Data Lines | Industrial RS-485 Transceivers |
|---|---|
Use Scenario: Protecting differential data pairs against ESD events during hot-plug insertion or handling in factory environments. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between D+ and ground, and D− and ground. Use Value: Prevents latch-up or damage to USB PHY ICs while adding only 90 pF per line - no data rate degradation at 480 Mbps. |
Use Scenario: Shielding RS-485 transceiver pins (A/B) from ESD in factory automation control panels exposed to operator touch. IC Role / Device Role / Timing Role: Line-to-ground transient suppressor on each bus line, operating below common-mode range limits. Use Value: Maintains >12 kV common-mode immunity margin while avoiding signal integrity loss due to sub-100 pF loading. |
| Consumer Audio Jacks | Automotive Infotainment USB Ports |
Use Scenario: Guarding 3.5 mm audio jack tip/ring contacts against user-induced static discharge in portable speakers or headphones. IC Role / Device Role / Timing Role: Ground-referenced clamping diode on each analog signal path before amplifier input. Use Value: Blocks transients up to 30 kV without introducing audible pop/click artifacts thanks to low leakage (<2 µA) and stable VBR. |
Use Scenario: Protecting USB Type-A ports in vehicle head units from ESD during passenger device connection. IC Role / Device Role / Timing Role: Interface-level ESD suppressor mounted directly at connector footprint. Use Value: Complies with ISO 10605 (330 Ω/150 pF network) and retains full USB 2.0 functionality with no layout rerouting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0530HT1G | Lower capacitance (35 pF), higher VBR (30 V), Schottky architecture | Better suited for high-speed data lines (>1 Gbps); not rated for 30 kV IEC 61000-4-2 | Select when signal bandwidth >500 MHz dominates over ESD severity requirements |
| Vishay SMAJ5.0A | Higher power (400 W surge), DO-214AC package (4.5 × 2.7 mm), 5.0 V VBR | Designed for board-level surge (IEC 61000-4-5), not optimized for high-density interface routing | Choose for primary-level protection where PCB area allows larger footprint and higher clamping voltage is acceptable |
Compared with NSR0530HT1G and SMAJ5.0A, the NNCD6.8J-T1-AT delivers optimal balance of compact size, 30 kV ESD rating, and 90 pF loading-making it preferred for secondary-level, space-constrained interface protection where precise 6.8 V clamping and IEC 61000-4-2 compliance are mandatory.
Availability
NNCD6.8J-T1-AT is available at Aetrix Electronics and suitable for USB interface protection, industrial serial communication circuits, consumer audio port hardening, and automotive infotainment USB ports requiring stable component supply and long-term manufacturability.
Supply support for NNCD6.8J-T1-AT 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
Renesas Electronics Corporation is a global semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and interface solutions for industrial, automotive, and consumer markets.
The NNCD6.8J-T1-AT belongs to Renesas' legacy ESD noise clipping diode family, engineered specifically for high-density, low-capacitance transient suppression in external interface circuits subject to IEC 61000-4-2 testing.
FAQ
What is the maximum operating temperature for NNCD6.8J-T1-AT?
The NNCD6.8J-T1-AT has a maximum junction temperature of 150°C and a storage temperature range of −55°C to +150°C. Its power dissipation derates linearly from 150 mW at 25°C ambient to zero at 125°C ambient, as shown in Figure 1 of the D15985EJ3V1DS datasheet. Operation beyond these limits risks irreversible parametric shift or thermal runaway.
Does NNCD6.8J-T1-AT meet IEC 61000-4-2 Level 4 requirements?
Yes, the NNCD6.8J-T1-AT is rated for 30 kV contact discharge per IEC 61000-4-2, exceeding Level 4 (8 kV contact / 15 kV air) by a wide margin. This rating is verified in the original NEC Electronics datasheet D15985EJ3V1DS and applies to the device in its specified ultra-super-mini-mold package with standard PCB mounting conditions.
Can NNCD6.8J-T1-AT be used in bidirectional signal lines like USB D+/D−?
Yes, NNCD6.8J-T1-AT is typically deployed in pairs-one anode-to-line/cathode-to-ground and one cathode-to-line/anode-to-ground-to provide symmetrical clamping for bidirectional lines. Its unidirectional structure requires mirrored placement per line, unlike true bidirectional TVS diodes, but this configuration is standard practice for this family.
What is the typical clamping voltage of NNCD6.8J-T1-AT during an ESD event?
The clamping voltage of NNCD6.8J-T1-AT is not explicitly specified in the datasheet, but based on its 6.2–7.1 V breakdown voltage and typical silicon diode dynamic resistance (~1 Ω), it clamps to approximately 10–12 V at 1–2 A peak current. This aligns with observed performance in IEC 61000-4-2 testing and matches design expectations for 5 V interface protection.
Is NNCD6.8J-T1-AT RoHS compliant and lead-free?
Yes, NNCD6.8J-T1-AT conforms to EU RoHS Directive requirements. The "T1" suffix denotes tape-and-reel packaging, and Renesas confirms RoHS compliance for this product family in environmental documentation referenced in the D15985EJ3V1DS datasheet and on its official website.
NNCD6.8J-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NNCD6.8J-T1-AT FAQ
1.How can I place an order for NNCD6.8J-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD6.8J-T1-AT 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 NNCD6.8J-T1-AT reliable?
The price and inventory of NNCD6.8J-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NNCD6.8J-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD6.8J-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD6.8J-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD6.8J-T1-AT?
NNCD6.8J-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD6.8J-T1-AT 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 NNCD6.8J-T1-AT?
For technical support, including NNCD6.8J-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD6.8J-T1-AT requirements.
6.How does Aetrix verify that NNCD6.8J-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD6.8J-T1-AT 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 NNCD6.8J-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD6.8J-T1-AT?
All NNCD6.8J-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD6.8J-T1-AT, 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 NNCD6.8J-T1-AT part is unused and in its original packaging.
Return procedure for NNCD6.8J-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD6.8J-T1-AT Tags
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