Renesas NNCD36DA(0)-T1-AT

Overview

NNCD36DA(0)-T1-AT from Renesas Electronics is a 2-pin SC-76 packaged ESD noise clipping diode designed for transient voltage suppression in external interface circuits. It features a breakdown voltage of 34.0–38.0 V, dynamic impedance ≤90 Ω at 2 mA, capacitance of 22 pF at 1 MHz, and IEC61000-4-2 rated ESD protection up to ±20 kV contact discharge. It is used in USB, audio jack, and display port interface protection.

For engineers reviewing the NNCD36DA(0)-T1-AT datasheet, NNCD36DA(0)-T1-AT pinout, NNCD36DA(0)-T1-AT application, or NNCD36DA(0)-T1-AT equivalent, key selection criteria include clamping voltage under surge, low capacitance for high-speed signal integrity, SC-76 footprint compatibility, and Pb-free tape-and-reel packaging for automated assembly.

Technical Context

This device operates as a unidirectional avalanche diode with cathode-indicated polarity, optimized for fast response to electrostatic discharge transients per IEC61000-4-2 Level 4 (±8 kV contact / ±15 kV air). Its clamping behavior is defined by a sharp reverse breakdown knee and low dynamic impedance, enabling effective voltage limiting during sub-microsecond ESD events.

The NNCD36DA(0)-T1-AT is thermally rated for 150°C junction temperature and delivers 85 W surge reverse power handling (t_T = 10 μs, single pulse), supported by transient thermal impedance of 625°C/W at 1 ms. It is specified for surface mounting on standard 30 mm × 30 mm × 1.6 mm glass epoxy PCBs.

Key Specifications

Pinout & Package

Package: 2-pin Super Mini Mold (SC-76), dimensions 2.5 ± 0.15 mm × 1.7 ± 0.1 mm × 1.25 ± 0.1 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 ESD9X3.3S5-2/TR and TPD2E001DRYR, the NNCD36DA(0)-T1-AT provides higher voltage standoff and single-line optimization for 36 V-rated interfaces, making it uniquely suitable for legacy industrial serial links, auxiliary power-sense lines, and high-V_CC peripheral protection where lower-breakdown alternatives would conduct prematurely.

Availability

NNCD36DA(0)-T1-AT is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI interface shielding, and industrial serial interface safeguarding requiring stable component supply across production lifecycles.

Supply support for NNCD36DA(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, and power devices.

The NNCD series was developed by NEC Electronics (now Renesas) specifically for cost-effective, surface-mount ESD protection of external I/O interfaces in consumer and industrial electronics, emphasizing reliability under IEC61000-4-2 testing.

FAQ

What is the maximum ESD voltage rating for NNCD36DA(0)-T1-AT?

The NNCD36DA(0)-T1-AT is rated for ±20 kV contact discharge per IEC61000-4-2, verified under standardized test conditions using a 150 pF capacitor and 330 Ω resistor network. This rating applies to both anode-to-cathode and cathode-to-anode configurations when properly mounted with low-inductance ground paths. The NNCD36DA(0)-T1-AT achieves this performance without degradation after repeated stress cycles within specification limits.

Does NNCD36DA(0)-T1-AT support bidirectional ESD protection?

No, the NNCD36DA(0)-T1-AT is a unidirectional ESD protection diode with cathode-marked polarity. It clamps only when the cathode is at higher potential than the anode - i.e., during negative transients on grounded lines or positive transients on anode-connected signal lines. For bidirectional protection, two NNCD36DA(0)-T1-AT devices must be used in series-opposed configuration, or a dedicated bidirectional part selected.

What is the thermal resistance of NNCD36DA(0)-T1-AT under standard mounting conditions?

Under standard surface-mount conditions on a 30 mm × 30 mm × 1.6 mm glass epoxy PCB, the NNCD36DA(0)-T1-AT exhibits a transient thermal impedance of 625°C/W at 1 ms, as documented in Figure 4 of datasheet D18879EJ2V0DS. This value enables accurate prediction of junction temperature rise during short-duration ESD pulses but does not apply to steady-state power dissipation, which is limited to 200 mW at 25°C ambient.

Can NNCD36DA(0)-T1-AT be used for surge protection beyond ESD events?

The NNCD36DA(0)-T1-AT is characterized for ESD transients (t_T = 10 μs) and is not rated for longer-duration surges such as lightning-induced or AC line-coupled transients (e.g., IEC61000-4-5). Its 85 W surge reverse power rating applies exclusively to single 10 μs pulses. For 8/20 μs or 10/1000 μs surge events, a dedicated TVS diode with higher peak pulse power and specified waveform ratings should be used instead of NNCD36DA(0)-T1-AT.

Is NNCD36DA(0)-T1-AT compatible with lead-free reflow soldering processes?

Yes, NNCD36DA(0)-T1-AT uses pure Sn (tin) lead plating and is qualified for standard Pb-free reflow profiles, including peak temperatures up to 260°C for 10 seconds. The SC-76 package construction and internal die attach are fully compatible with IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), eliminating pre-bake requirements prior to assembly. The NNCD36DA(0)-T1-AT meets RoHS Directive 2011/65/EU compliance without exemptions.