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Renesas NNCD18DT-T1-AT
- Part No.:
- NNCD18DT-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NNCD18DT-T1-AT.pdf
- Description:
- NNCD18DT-T1-AT - ELECTROSTATIC D
- Quantity:
- Payment:
- Shipping:
Inventory:207,000
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Product details
Overview
NNCD18DT-T1-AT from Renesas Electronics is a bidirectional ESD noise clipping diode designed for LIN bus line protection, featuring 16–20 V breakdown voltage (VBR), 15 pF typical capacitance at 1 MHz, 85 W surge reverse power rating (tT = 10 μs), 200 mW power dissipation on standard PCB, and compliance with IEC61000-4-2 ESD immunity standards.
For engineers reviewing the NNCD18DT-T1-AT datasheet, NNCD18DT-T1-AT pinout, NNCD18DT-T1-AT application, or NNCD18DT-T1-AT equivalent, this device serves as a compact, Pb-free, SC-76 packaged solution for transient suppression in automotive LIN physical layer interfaces where low capacitance and fast clamping response are critical.
Technical Context
This diode operates as a symmetrical, two-terminal transient voltage suppressor optimized for bidirectional signal-line protection. It clamps both positive and negative transients above its 16–20 V breakdown threshold while maintaining low dynamic capacitance (15 pF) to avoid signal integrity degradation on 19.2 kbps LIN bus lines.
Its thermal design supports 150°C junction temperature and relies on surface-mount thermal coupling to a 50 mm × 50 mm × 1.6 mm glass-epoxy PCB. The device is rated for single-pulse 85 W surge power (10 μs) and exhibits 625°C/W transient thermal impedance at 1 ms per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 16–20 V at 5 mA - defines clamping onset for LIN bus overvoltage events without interfering with normal 12 V nominal operation |
| Capacitance (Ct) | 15 pF at 1 MHz, 0 V - ensures minimal signal distortion on LIN's low-speed differential signaling |
| Surge Reverse Power (PRSM) | 85 W (10 μs pulse) - withstands high-energy ESD strikes per IEC61000-4-2 Level 4 (±15 kV contact) |
| Power Dissipation (P) | 200 mW on 50 mm × 50 mm × 1.6 mm PCB - sets continuous thermal limit for board-level layout planning |
| ESD Voltage Rating | ±30 kV - verified performance against air and contact discharge per IEC61000-4-2 |
| Junction Temperature (Tj) | −55 to +150°C - supports operation across full automotive under-hood ambient ranges |
Pinout & Package
Package: 2-pin Super Mini Mold (SC-76), dimensions 1.7 × 2.5 × 0.3 mm (L × W × H), Pb-free pure Sn lead plating, tape-and-reel packing (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (bidirectional) | Interchangeable terminal - symmetrical construction enables placement without orientation constraints on LIN bus line |
| 2 | Anode/Cathode (bidirectional) | Interchangeable terminal - no polarity marking required; functions identically regardless of PCB routing direction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Clamping | Clamps ± transients equally - eliminates need for dual-diode configurations or polarity-aware layout on LIN bus traces |
| IEC61000-4-2 Compliance | Rated to ±30 kV - exceeds automotive-grade ESD immunity requirements for LIN transceivers and nodes |
| Low Capacitance | 15 pF typical - preserves LIN signal edge integrity and avoids timing jitter in 19.2 kbps communication |
| SC-76 Package | 1.7 × 2.5 mm footprint - enables high-density placement near LIN connector or transceiver IC without sacrificing board area |
Applications
| Automotive LIN Node Protection | LIN Transceiver I/O Clamp |
|---|---|
|
Use Scenario: Protecting microcontroller-based door module LIN slaves from ESD events during vehicle assembly or service. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly across LIN bus pins (LIN_H/L) before transceiver input. Use Value: Prevents latch-up or damage to Renesas uPD78F0730 or similar LIN PHYs while adding only 15 pF loading. |
Use Scenario: Shielding standalone LIN transceivers (e.g., TJA1020) from cable-borne surges in body control modules. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at connector interface, upstream of transceiver ESD diodes. Use Value: Absorbs 85 W surge energy before internal transceiver clamps activate, extending system-level robustness. |
| Body Control Unit Bus Interface | Smart Sensor LIN Termination |
|
Use Scenario: Securing LIN communication between BCM and HVAC actuators exposed to harness-level noise. IC Role / Device Role / Timing Role: Line-side ESD protector integrated into PCB-level LIN termination network. Use Value: Maintains <1% signal rise-time degradation at 19.2 kbps while meeting ISO 10605 330 Ω/150 pF test requirements. |
Use Scenario: Adding ESD resilience to MEMS-based LIN sensors (e.g., pressure or temperature) in engine compartments. IC Role / Device Role / Timing Role: Compact, thermally efficient clamp co-located with sensor ASIC on small-form-factor modules. Use Value: Enables operation up to 150°C junction temperature without derating, supporting under-hood deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B5.0ST5G (ON Semiconductor) | 5.0 V breakdown, 30 pF capacitance - lower clamping voltage but higher capacitance than NNCD18DT-T1-AT | Suitable for 5 V logic I/O; not recommended for 12 V LIN bus due to premature conduction | Select only if protecting low-voltage digital signals; avoid for LIN bus where 16–20 V VBR is required to avoid false triggering |
| TPD2E001DRYR (Texas Instruments) | 5.5 V breakdown, dual-channel, 12 pF - optimized for USB/IO protection, not automotive-rated | Lacks IEC61000-4-2 Level 4 validation and automotive temperature range certification | Use for consumer electronics interfaces; NNCD18DT-T1-AT remains preferred for AEC-Q200-aligned LIN designs |
Compared with ESD9B5.0ST5G and TPD2E001DRYR, NNCD18DT-T1-AT provides higher VBR, lower capacitance relative to its voltage class, and certified automotive-grade surge handling-making it uniquely suited for LIN bus physical layer protection where signal fidelity and robustness must coexist.
Availability
NNCD18DT-T1-AT is available at Aetrix Electronics and suitable for automotive LIN node protection, body control unit bus interfaces, and smart sensor LIN termination requiring stable component supply across extended production lifecycles.
Supply support for NNCD18DT-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 leader formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
NNCD18DT-T1-AT belongs to Renesas' legacy ESD protection diode family targeting LIN bus compliance; it was engineered specifically to meet stringent automotive electromagnetic compatibility requirements without compromising signal integrity.
FAQ
What is the primary function of the NNCD18DT-T1-AT in a LIN bus system?
The NNCD18DT-T1-AT functions as a bidirectional ESD noise clipping diode that clamps transient overvoltages on the LIN bus line to protect downstream transceivers and microcontrollers. Its 16–20 V breakdown voltage allows normal 12 V LIN operation while suppressing ESD events up to ±30 kV per IEC61000-4-2. The NNCD18DT-T1-AT achieves this with minimal 15 pF capacitance to preserve signal timing integrity at 19.2 kbps.
Does the NNCD18DT-T1-AT require specific PCB layout considerations?
Yes - the NNCD18DT-T1-AT must be placed as close as possible to the LIN connector or transceiver I/O pins to minimize trace inductance, which degrades ESD suppression effectiveness. Its SC-76 package supports high-density mounting, and thermal performance assumes mounting on a 50 mm × 50 mm × 1.6 mm glass-epoxy PCB. The NNCD18DT-T1-AT does not require orientation-specific placement due to its symmetrical pinout.
Is the NNCD18DT-T1-AT compliant with automotive reliability standards?
The NNCD18DT-T1-AT is qualified to "High Quality" grade per Renesas' classification, supporting applications including automotive transportation equipment and safety systems (excluding life-support). It meets IEC61000-4-2 Level 4 ESD immunity and operates across −55°C to +150°C junction temperature. While not AEC-Q200 certified as a standalone part, its design intent and test data align with automotive LIN bus protection requirements.
Can the NNCD18DT-T1-AT be used on other communication buses besides LIN?
The NNCD18DT-T1-AT is optimized for LIN bus characteristics - its 16–20 V VBR and 15 pF capacitance suit 12 V nominal, 19.2 kbps operation. It is not recommended for CAN (requires >24 V VBR) or USB/I²C (requires <6 V VBR). Using NNCD18DT-T1-AT on non-LIN buses risks either false triggering or insufficient clamping. Always verify voltage margin and signal bandwidth compatibility before reuse.
What is the surge handling capability of the NNCD18DT-T1-AT?
The NNCD18DT-T1-AT supports 85 W non-repetitive surge reverse power for a 10 μs pulse width (per Figure 4), corresponding to IEC61000-4-2 contact discharge testing at ±15 kV. This rating assumes proper PCB thermal coupling - derating applies for smaller copper areas or elevated ambient temperatures. The NNCD18DT-T1-AT maintains this performance without degradation across its specified −55°C to +150°C junction temperature range.
NNCD18DT-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V (Max)
- Voltage - Breakdown (Min):
- 16V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 15pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
NNCD18DT-T1-AT FAQ
1.How can I place an order for NNCD18DT-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD18DT-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 NNCD18DT-T1-AT reliable?
The price and inventory of NNCD18DT-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 NNCD18DT-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD18DT-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD18DT-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD18DT-T1-AT?
NNCD18DT-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD18DT-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 NNCD18DT-T1-AT?
For technical support, including NNCD18DT-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD18DT-T1-AT requirements.
6.How does Aetrix verify that NNCD18DT-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD18DT-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 NNCD18DT-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD18DT-T1-AT?
All NNCD18DT-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD18DT-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 NNCD18DT-T1-AT part is unused and in its original packaging.
Return procedure for NNCD18DT-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD18DT-T1-AT Tags
-
ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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