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Renesas NNCD4.3G-T1-AT
- Part No.:
- NNCD4.3G-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NNCD4.3G-T1-AT.pdf
- Description:
- NNCD4.3G-T1-AT - ELECTROSTATIC D
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
NNCD4.3G-T1-AT from Renesas Electronics is a quad-channel ESD protection diode in common-anode configuration, rated for 30 kV IEC 1000-4-2 contact discharge, with breakdown voltage 4.01–4.48 V, dynamic impedance ≤130 Ω at 5 mA, and reverse capacitance 180 pF at 1 MHz. It is designed for high-density interface protection on parallel ports, CD-ROM interfaces, and peripheral connectors.
For engineers reviewing the NNCD4.3G-T1-AT datasheet, NNCD4.3G-T1-AT pinout, NNCD4.3G-T1-AT application, or NNCD4.3G-T1-AT equivalent, key selection criteria include ESD robustness (30 kV), low clamping impedance, channel count (4), package footprint (5-pin SC-74A), and compatibility with automated SMT assembly.
Technical Context
This device implements four independent Zener-clamp diodes sharing a common anode terminal, enabling simultaneous bidirectional ESD suppression across four signal lines. Each cathode-anode path exhibits tightly controlled breakdown (4.01–4.48 V) and low dynamic impedance (≤130 Ω), ensuring rapid voltage clamping during transient events.
It operates within a junction temperature range of –55 °C to +150 °C and supports surge reverse power up to 85 W (10 µs pulse). The 5-pin mini mold (SC-74A) package enables compact board layout while maintaining thermal performance suitable for consumer and industrial interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 4.01–4.48 V - defines clamping threshold for ESD transients on each protected line |
| Dynamic Impedance | ≤130 Ω at 5 mA - ensures low-voltage overshoot during fast ESD pulses |
| Reverse Capacitance | 180 pF at 1 MHz - limits signal distortion on high-speed parallel interfaces |
| ESD Withstand | ≥30 kV per IEC 1000-4-2 contact discharge - meets industrial-grade interface immunity requirements |
| Surge Power | 85 W (10 µs pulse) - sustains single high-energy transients without failure |
| Package | 5-pin SC-74A (Mini Mold) - supports automated placement and reflow, footprint 2.9 × 1.9 mm |
Pinout & Package
Package: 5-pin SC-74A (Mini Mold), surface-mount, common-anode quad diode configuration. Dimensions: 2.9 ± 0.2 mm × 1.9 mm × 1.4 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 (K1) | Protected signal line 1 - connects to I/O trace requiring ESD clamping |
| 2 | Anode (A) | Common return node - ties all four diodes to ground or reference plane |
| 3 | Cathode 2 (K2) | Protected signal line 2 - independent clamping path for second interface line |
| 4 | Cathode 3 (K3) | Protected signal line 3 - enables multi-line protection without discrete components |
| 5 | Cathode 4 (K4) | Protected signal line 4 - completes quad-channel ESD shield for parallel bus applications |
Key Features
| Feature | Design Value |
|---|---|
| IEC 1000-4-2 ESD rating | 30 kV contact discharge - exceeds standard industrial immunity requirements |
| Quad-channel integration | Four independent clamping paths in one SC-74A package - reduces PCB area vs. discrete diodes |
| Low dynamic impedance | ≤130 Ω at 5 mA - minimizes voltage overshoot during sub-nanosecond ESD events |
| Controlled capacitance | 180 pF at 1 MHz - preserves signal integrity on parallel interfaces up to ~10 MHz |
Applications
| Parallel Port Protection | CD-ROM Interface Protection |
|---|---|
Use Scenario: Protecting legacy LPT port signals against ESD during cable hot-plug or handling. IC Role / Device Role / Timing Role: Quad-channel transient voltage suppressor placed between connector pins and microcontroller I/O. Use Value: Prevents latch-up or damage to parallel port drivers by clamping transients to ≤4.5 V before they reach logic inputs. | Use Scenario: Shielding CD-ROM drive data/control lines (e.g., IDE/ATA bus) from user-induced ESD. IC Role / Device Role / Timing Role: Common-anode ESD clamp on D0–D7, RD, WR, and CS lines. Use Value: Maintains data integrity during insertion/removal by limiting voltage excursions to safe levels without adding propagation delay. |
| Printer Interface Protection | Game Console Peripheral Port |
Use Scenario: Securing printer cable connections exposed to frequent handling in office environments. IC Role / Device Role / Timing Role: ESD guard on STROBE, ACK, BUSY, and ERROR lines of Centronics-style interface. Use Value: Eliminates field failures caused by repeated 8–15 kV air-discharge events on unshielded ribbon cables. | Use Scenario: Hardening TV game controller ports (e.g., SNES, Genesis) against static discharge during cartridge swaps. IC Role / Device Role / Timing Role: Signal-line protector on address/data/control bus between console and expansion slot. Use Value: Enables reliable hot-swap operation without requiring system reset or firmware recovery after ESD exposure. |
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 NUP4105MR6T1G | Quad-channel, common-cathode; 30 kV ESD rating; 120 pF capacitance; SOT-23-6 package | Requires inverted PCB layout (cathode-common vs. anode-common); lower capacitance suits faster interfaces | Select when lower capacitance is prioritized and layout allows cathode tie to VCC |
| Vishay ESDE0402-4 | Quad-channel, common-anode; 30 kV ESD rating; 150 pF capacitance; SOT-23-6 package | Same topology but different pinout; higher leakage (1 µA vs. 10 µA); slightly tighter VBR tolerance | Prefer for tighter voltage control where leakage <1 µA is critical |
Compared with NNCD4.3G-T1-AT, NUP4105MR6T1G offers lower capacitance but requires redesigning the common node connection, while ESDE0402-4 matches the anode-common architecture but uses a different pin assignment and has stricter leakage specs-both require validation for mechanical fit and thermal performance in the target layout.
Availability
NNCD4.3G-T1-AT is available at Aetrix Electronics and suitable for parallel port protection, CD-ROM interface hardening, and printer cable ESD shielding requiring stable component supply and long-term industrial availability.
Supply support for NNCD4.3G-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 devices.
The NNCD series was developed by Renesas (formerly NEC) specifically for cost-effective, high-density ESD protection of legacy and industrial parallel interfaces, targeting Standard-grade applications including office equipment and consumer peripherals.
FAQ
What is the maximum ESD voltage rating for NNCD4.3G-T1-AT?
NNCD4.3G-T1-AT is rated for ≥30 kV per IEC 1000-4-2 contact discharge testing. This rating applies to each of its four channels under standardized test conditions (150 pF capacitor, 330 Ω series resistor). The device maintains this performance across its full operating temperature range and does not degrade after repeated non-destructive ESD events.
Does NNCD4.3G-T1-AT support automatic optical inspection (AOI) after reflow?
Yes, NNCD4.3G-T1-AT's SC-74A package features clearly defined solder pad geometry and consistent lead coplanarity, making it compatible with standard AOI systems used in high-volume SMT lines. Its matte tin finish and uniform body color support reliable contrast-based inspection for solder joint integrity and placement accuracy.
Can NNCD4.3G-T1-AT be used on 5 V TTL logic lines?
Yes, NNCD4.3G-T1-AT is specifically designed for 5 V interface protection. Its breakdown voltage range (4.01–4.48 V) ensures clamping occurs below the absolute maximum input voltage of standard 5 V TTL and CMOS ICs (typically 5.5–6.5 V), preventing overstress while allowing normal signal swing up to 5 V.
What is the thermal resistance (RθJA) of NNCD4.3G-T1-AT in typical PCB layout?
While RθJA is not explicitly specified in the datasheet, the NNCD4.3G-T1-AT's 200 mW total power dissipation rating and SC-74A package imply a typical RθJA of ~300–400 °C/W on a standard 1-oz copper FR-4 board with minimal copper pour. Derating curves in Figure 1 confirm 100% power capability at 25 °C ambient and linear reduction to zero at 150 °C junction temperature.
Is NNCD4.3G-T1-AT compliant with RoHS and REACH regulations?
Yes, NNCD4.3G-T1-AT complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Renesas confirms lead-free terminations and absence of restricted substances, as documented in their environmental compliance statements accessible via www.renesas.com/environment.
NNCD4.3G-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1V (Max)
- Voltage - Breakdown (Min):
- 4.01V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 180pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74A
NNCD4.3G-T1-AT FAQ
1.How can I place an order for NNCD4.3G-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD4.3G-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 NNCD4.3G-T1-AT reliable?
The price and inventory of NNCD4.3G-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 NNCD4.3G-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD4.3G-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD4.3G-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD4.3G-T1-AT?
NNCD4.3G-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD4.3G-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 NNCD4.3G-T1-AT?
For technical support, including NNCD4.3G-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD4.3G-T1-AT requirements.
6.How does Aetrix verify that NNCD4.3G-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD4.3G-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 NNCD4.3G-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD4.3G-T1-AT?
All NNCD4.3G-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD4.3G-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 NNCD4.3G-T1-AT part is unused and in its original packaging.
Return procedure for NNCD4.3G-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD4.3G-T1-AT Tags
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