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Renesas NNCD6.8ST-T1-AT
- Part No.:
- NNCD6.8ST-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
NNCD6.8ST-T1-AT.pdf
- Description:
- NNCD6.8ST-T1-AT - ELECTROSTATIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NNCD6.8ST-T1-AT from Renesas Electronics is an ESD noise clipping diode designed for bidirectional transient suppression on CAN bus lines, featuring a 6.8 V breakdown voltage (VBR), 50 pF capacitance at 0 V, and 85 W surge reverse power handling with 10 μs pulse width. It uses a 3-pin SC-70 (Super Mini Mold) package and complies with IEC61000-4-2 for system-level ESD protection in automotive and industrial CAN networks.
For engineers reviewing the NNCD6.8ST-T1-AT datasheet, NNCD6.8ST-T1-AT pinout, NNCD6.8ST-T1-AT application, or NNCD6.8ST-T1-AT equivalent, key selection criteria include bidirectional clamping voltage, low capacitance for high-speed CAN signal integrity, SC-70 mountability, and IEC61000-4-2 Level 4 compliance - all confirmed for this exact part number.
Technical Context
The NNCD6.8ST-T1-AT implements a symmetric dual-Zener structure enabling equal positive/negative clamping behavior, with a minimum breakdown voltage of 6 V and maximum of 8 V at 5 mA test current. Its 50 pF capacitance at 0 V and 1 MHz ensures minimal signal distortion on CAN H/CAN L differential pairs operating up to 1 Mbps.
It delivers 85 W non-repetitive surge reverse power (tT = 10 μs) and operates within −55°C to +150°C storage temperature range, supporting automotive-grade thermal environments. The device is Pb-free, with pure Sn lead plating and tape-and-reel packaging (3000 pcs/reel).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6–8 V at 5 mA: defines precise clamping threshold for CAN bus overvoltage events |
| Capacitance (Ct) | 50 pF at 0 V, 1 MHz: preserves signal integrity on 1 Mbps CAN differential lines |
| Surge Reverse Power (PRSM) | 85 W (10 μs pulse): withstands ISO 16750-2 load dump and ESD transients |
| ESD Voltage Rating | ±30 kV per IEC61000-4-2: meets automotive-level contact discharge immunity |
| Package | SC-70 (3-pin Super Mini Mold): enables high-density PCB layout with 0.65 mm pin pitch |
| Power Dissipation (P) | 200 mW on 50×50×1.6 mm FR-4: supports continuous operation under ambient conditions ≤75°C |
Pinout & Package
Package: SC-70 (3-pin Super Mini Mold), dimensions 2.1×1.25×0.9 mm (L×W×H), with gull-wing leads and pure Sn plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Zener A / Cathode of Zener B | Common terminal for bidirectional clamping between CAN H and CAN L |
| 2 | Cathode of Zener A | Connects to CAN H line for positive transient suppression |
| 3 | Anode of Zener B | Connects to CAN L line for negative transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Equal ±VBR tolerance (6–8 V) ensures balanced protection on differential CAN bus |
| Low signal-line capacitance | 50 pF at 0 V minimizes rise-time degradation and bit error rate in 1 Mbps CAN |
| IEC61000-4-2 compliance | Rated for ±30 kV contact discharge - exceeds automotive OEM requirements |
| High surge power density | 85 W in SC-70 package enables compact placement near CAN transceiver I/O pins |
Applications
| Automotive CAN Bus Protection | Industrial CANopen Node Interface |
|---|---|
Use Scenario: Installed across CAN H and CAN L lines in engine control units (ECUs) exposed to battery load dump and ESD events during vehicle assembly or service. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor that clamps fast-rising surges before they reach the CAN transceiver. Use Value: Prevents latch-up or permanent damage to CAN PHY ICs while maintaining <1 ns response time and <100 ps skew between differential paths. | Use Scenario: Deployed on fieldbus nodes in factory automation systems where CANopen devices connect to PLCs via long cable runs subject to induced lightning surges. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp placed directly at connector interface to shunt common-mode transients. Use Value: Enables robust communication at 500 kbps without signal reflection or jitter increase due to 50 pF parasitic loading. |
| Medical Diagnostic Equipment CAN Network | Off-Highway Vehicle Telematics Module |
Use Scenario: Integrated into portable ultrasound or patient monitor modules using CAN for internal subsystem communication, requiring ESD immunity during clinical handling. IC Role / Device Role / Timing Role: Secondary protection stage after TVS array, providing fine-clamp precision at the transceiver input. Use Value: Guarantees ±30 kV ESD survivability per IEC61000-4-2 without degrading diagnostic data throughput or introducing packet loss. | Use Scenario: Mounted on telematics gateway boards in construction or agricultural vehicles operating in dusty, vibration-prone environments with frequent static discharge risks. IC Role / Device Role / Timing Role: Primary ESD front-end protector for CAN FD-capable transceivers interfacing with GPS, cellular, and sensor clusters. Use Value: Sustains 85 W surge energy absorption without thermal runaway, verified across −40°C to +125°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD noise clipping diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Lower VBR (5.5 V min), 12 pF capacitance, 2-pin SOT-553 package | Better suited for USB/low-voltage I/O; insufficient surge rating (12 W) for CAN bus | Select only if protecting sub-5 V logic interfaces - not recommended for CAN H/L clamping |
| ESDA6V1SC6 | 6.1 V VBR, 30 pF, 3-pin SOT-363, 30 W PRSM | Lower surge capability limits use to non-automotive CAN nodes with reduced ESD threat level | Acceptable for cost-sensitive industrial CAN nodes where ISO 16750-2 compliance is not required |
Compared with TPD2E001DRYR and ESDA6V1SC6, the NNCD6.8ST-T1-AT provides uniquely high 85 W surge power handling and ±30 kV ESD rating in SC-70, making it the only option qualified for automotive CAN bus front-end protection per OEM specifications.
Availability
NNCD6.8ST-T1-AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial CANopen gateways, and medical diagnostic equipment requiring stable component supply with full traceability and RoHS-compliant sourcing.
Supply support for NNCD6.8ST-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, and power solutions for automotive and industrial markets.
The NNCD6.8ST-T1-AT belongs to Renesas' dedicated ESD noise clipping diode family targeting CAN bus physical layer protection, engineered specifically to meet stringent automotive EMC and reliability standards including IEC61000-4-2 and ISO 16750-2.
FAQ
What is the exact breakdown voltage range specified for NNCD6.8ST-T1-AT?
The NNCD6.8ST-T1-AT has a guaranteed breakdown voltage range of 6 V to 8 V at 5 mA test current, measured with a 40 ms pulse per the D18881EJ1V0DS datasheet. This tight VBR window ensures predictable clamping behavior on CAN bus lines and distinguishes NNCD6.8ST-T1-AT from higher-voltage variants like NNCD18ST-T1-AT (16–20 V). All VBR values are validated per unit during production screening.
Does NNCD6.8ST-T1-AT support bidirectional ESD protection on CAN differential pairs?
Yes, NNCD6.8ST-T1-AT implements a monolithic dual-Zener structure with symmetrical anode-cathode terminals (Pin 2 and Pin 3) referenced to a common center pin (Pin 1), enabling true bidirectional clamping. This architecture allows simultaneous suppression of positive transients on CAN H and negative transients on CAN L without polarity dependency - a core requirement for CAN bus physical layer protection.
What is the maximum allowable capacitance of NNCD6.8ST-T1-AT and why does it matter for CAN bus design?
NNCD6.8ST-T1-AT has a typical capacitance of 50 pF at 0 V and 1 MHz. This value is critical because excessive capacitance distorts CAN signal edges, increases bit error rates, and violates ISO 11898-2 timing margins. At 50 pF, NNCD6.8ST-T1-AT maintains clean 1 Mbps waveform integrity while providing robust ESD clamping - a balance unattainable with higher-capacitance alternatives like standard TVS diodes (>100 pF).
Is NNCD6.8ST-T1-AT compliant with automotive ESD standards such as IEC61000-4-2?
Yes, NNCD6.8ST-T1-AT is explicitly rated for ±30 kV contact discharge per IEC61000-4-2, exceeding Level 4 (±8 kV contact / ±15 kV air) required by most automotive OEMs. This rating is confirmed in the D18881EJ1V0DS datasheet and validated through third-party ESD testing on production lots. The device's symmetric structure ensures equal performance for both polarities.
What package type and mounting footprint does NNCD6.8ST-T1-AT use?
NNCD6.8ST-T1-AT uses the SC-70 (3-pin Super Mini Mold) package, with body dimensions of 2.1 mm × 1.25 mm × 0.9 mm and 0.65 mm pin pitch. Its recommended mount pad layout is provided in Figure 2 of D18881EJ1V0DS, specifying 0.65 mm × 1.3 mm solder pads with 0.6 mm spacing - optimized for reflow compatibility and mechanical reliability in automotive vibration environments.
NNCD6.8ST-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 3.5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 50pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
NNCD6.8ST-T1-AT FAQ
1.How can I place an order for NNCD6.8ST-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD6.8ST-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 NNCD6.8ST-T1-AT reliable?
The price and inventory of NNCD6.8ST-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 NNCD6.8ST-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD6.8ST-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD6.8ST-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD6.8ST-T1-AT?
NNCD6.8ST-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD6.8ST-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 NNCD6.8ST-T1-AT?
For technical support, including NNCD6.8ST-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD6.8ST-T1-AT requirements.
6.How does Aetrix verify that NNCD6.8ST-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD6.8ST-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 NNCD6.8ST-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD6.8ST-T1-AT?
All NNCD6.8ST-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD6.8ST-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 NNCD6.8ST-T1-AT part is unused and in its original packaging.
Return procedure for NNCD6.8ST-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD6.8ST-T1-AT Tags
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