Renesas NNCD5.1DA(0)-T1-AT

Overview

NNCD5.1DA(0)-T1-AT from Renesas Electronics is a 2-pin ESD noise clipping diode designed for IEC61000-4-2 compliant interface protection. It features a breakdown voltage of 4.82–5.39 V, dynamic impedance ≤130 Ω at 5 mA, reverse leakage ≤5 μA at 1.5 V, capacitance of 160 pF at 1 MHz, and 30 kV ESD immunity. It is used in USB, audio jack, and parallel interface circuits to clamp transient overvoltage before IC damage occurs.

For engineers reviewing the NNCD5.1DA(0)-T1-AT datasheet, NNCD5.1DA(0)-T1-AT pinout, NNCD5.1DA(0)-T1-AT application, or NNCD5.1DA(0)-T1-AT equivalent, key selection criteria include clamping voltage accuracy, low dynamic impedance for fast response, 160 pF signal-line capacitance tolerance, SC-76 package compatibility with high-density PCB layouts, and Pb-free tape-and-reel packaging for automated assembly.

Technical Context

This device operates as a unidirectional silicon avalanche diode optimized for electrostatic discharge suppression on signal lines. Its clamping action begins near 4.82 V (min) and stabilizes below 5.39 V (max) under 5 mA test current, enabling precise protection of 5 V logic interfaces without false triggering.

It delivers 85 W surge reverse power handling for 10 μs pulses per IEC61000-4-2 Level 4 testing, with thermal performance validated on standard 30 mm × 30 mm × 1.6 mm glass epoxy PCBs. The 2-pin SC-76 package supports surface-mount reflow while maintaining low parasitic inductance for sub-nanosecond transient response.

Key Specifications

Pinout & Package

Package: SC-76 (2-pin Super Mini Mold), dimensions 1.7 ± 0.1 mm × 2.5 ± 0.15 mm × 0.3 ± 0.05 mm, cathode indicated by marking on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with ESD5Z5.0T1G and TPD2E001DRYR, the NNCD5.1DA(0)-T1-AT offers higher surge power (85 W vs. 30–40 W), wider breakdown tolerance (±0.285 V), and proven reliability in legacy industrial interfaces-making it preferred for cost-sensitive, moderate-speed, high-reliability applications where discrete placement and thermal robustness are prioritized.

Availability

NNCD5.1DA(0)-T1-AT is available at Aetrix Electronics and suitable for USB interface protection, audio jack guarding, and parallel port ESD hardening requiring stable component supply across long-lifecycle industrial and consumer programs.

Supply support for NNCD5.1DA(0)-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 timing solutions.

The NNCD series was developed by NEC Electronics as a standardized family of ESD protection diodes targeting cost-effective, high-volume interface hardening for consumer and industrial electronics prior to the Renesas merger.

FAQ

What is the maximum operating temperature for the NNCD5.1DA(0)-T1-AT?

The NNCD5.1DA(0)-T1-AT has a maximum junction temperature of 150°C and a storage temperature range of −55°C to +150°C. Its thermal performance is characterized on a standard 30 mm × 30 mm × 1.6 mm glass epoxy PCB, supporting continuous operation in ambient temperatures up to 125°C when power dissipation remains within the 200 mW derated limit. This makes NNCD5.1DA(0)-T1-AT suitable for enclosed industrial enclosures with limited airflow.

Does the NNCD5.1DA(0)-T1-AT meet RoHS requirements?

Yes, the NNCD5.1DA(0)-T1-AT uses pure Sn (tin) lead plating and contains no lead in external electrodes or other parts, complying fully with EU RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1. The "-AT" suffix explicitly denotes Pb-free construction, and Renesas certifies this part as environmentally compliant for global manufacturing use.

Can the NNCD5.1DA(0)-T1-AT be used for bidirectional ESD protection?

No, the NNCD5.1DA(0)-T1-AT is a unidirectional diode intended for clamping positive transients to ground. It does not provide symmetrical protection for negative surges. For bidirectional applications such as RS-232 or Ethernet PHY lines, a dedicated bidirectional TVS like the PESD5V0S1BA should be selected instead of relying on NNCD5.1DA(0)-T1-AT alone.

What is the typical clamping voltage of the NNCD5.1DA(0)-T1-AT during an 8/20 μs surge?

The NNCD5.1DA(0)-T1-AT does not specify clamping voltage under 8/20 μs waveforms; its published surge rating is defined for 10 μs pulses (PRSM = 85 W). Based on its 130 Ω dynamic impedance and 5.39 V breakdown, clamping voltage under fast transients is estimated at ~12 V at 50 A, but actual performance depends on PCB layout and grounding. For precise 8/20 μs characterization, consult Renesas Application Note AN-8002 or perform system-level testing with NNCD5.1DA(0)-T1-AT installed.

Is the NNCD5.1DA(0)-T1-AT suitable for protecting high-speed data lines like USB 3.0 or HDMI?

No, the NNCD5.1DA(0)-T1-AT's 160 pF capacitance introduces excessive signal distortion on high-speed differential lines (e.g., USB 3.0 Gen 1 > 5 Gbps, HDMI 1.4 > 10.2 Gbps). It is validated for USB 2.0 (480 Mbps), audio, and parallel interfaces where bandwidth is ≤10 MHz. For USB 3.0 or HDMI, low-capacitance alternatives such as the RCLAMP0524P or SP1003K should be used instead of NNCD5.1DA(0)-T1-AT.