Renesas NNCD24J-T1-A

Overview

NNCD24J-T1-A from Renesas Electronics is an electrostatic discharge (ESD) noise clipping diode designed for external interface circuit protection. It features a breakdown voltage of 22.0–26.0 V, 20 pF capacitance at 0 V, ≤2 µA reverse leakage at 19.0 V, and 15 kV ESD immunity per IEC 61000-4-2 (contact discharge). It is housed in a 2-pin Ultra Super Mini Mold (flat type) package and used in USB, HDMI, and audio jack protection circuits.

For engineers reviewing the NNCD24J-T1-A datasheet, NNCD24J-T1-A pinout, NNCD24J-T1-A application, or NNCD24J-T1-A equivalent, key selection criteria include its 15 kV contact ESD rating, low 20 pF junction capacitance, 150 mW power dissipation limit, and suitability for high-density PCB layouts requiring minimal board area and automated assembly.

Technical Context

This diode operates as a unidirectional clamping device with avalanche breakdown behavior triggered above its specified V_BR range. Its low capacitance ensures minimal signal distortion in high-speed data lines, while its surge reverse power rating of 85 W (t = 10 µs) enables transient energy absorption without thermal runaway.

The device is rated for junction temperatures up to 150°C and storage between −55°C and +150°C. Its flat-type molded package supports reflow soldering and meets industrial reliability requirements for Standard-grade applications including consumer electronics and office equipment interfaces.

Key Specifications

Pinout & Package

NNCD24J-T1-A uses a 2-pin surface-mount flat-type molded package with cathode indicated by a marking bar. The package measures 1.4 ± 0.1 mm × 1.0 ± 0.1 mm × 0.6 ± 0.1 mm (L × W × H), optimized for space-constrained layouts and high-volume pick-and-place assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD9X5.0ST5G and CM1213A-03SO, NNCD24J-T1-A delivers higher ESD immunity (15 kV vs. 12/8 kV) and optimal capacitance (20 pF) for mid-speed interfaces like USB 2.0 and HDMI, whereas alternatives trade off either voltage rating or capacitance to meet narrower application constraints.

Availability

NNCD24J-T1-A is available at Aetrix Electronics and suitable for USB port protection, HDMI interface safeguarding, and industrial control panel ESD hardening requiring stable component supply and long-term production continuity.

Supply support for NNCD24J-T1-A 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 interface solutions.

NNCD24J-T1-A belongs to Renesas' ESD noise clipping diode family, engineered specifically for IEC 61000-4-2-compliant interface protection in consumer, computing, and industrial electronics.

FAQ

What is the maximum ESD voltage rating for NNCD24J-T1-A?

NNCD24J-T1-A is rated for 15 kV contact discharge per IEC 61000-4-2. This value is verified under standardized test conditions using a 150 pF capacitor and 330 Ω resistor network. The rating applies to single-pulse events and reflects the device's ability to clamp transients without degradation. NNCD24J-T1-A maintains this performance across its full operating temperature range and after repeated stress cycles within specification limits.

Does NNCD24J-T1-A support bidirectional ESD protection?

NNCD24J-T1-A is a unidirectional diode, but it can be used in a back-to-back configuration with a second unit to achieve bidirectional clamping. Its datasheet specifies operation with anode grounded or cathode grounded depending on polarity requirements. For true bidirectional protection without external components, a dedicated dual-diode array would be required - NNCD24J-T1-A itself functions as a single-polarity clamp. Always verify layout symmetry and grounding when implementing dual-device configurations.

What is the thermal resistance of NNCD24J-T1-A?

NNCD24J-T1-A has a transient thermal impedance of 833°C/W at t = 10 µs, as measured on a ceramic board (10 × 7.5 × 0.75 mm) with Cu film (11 × 2 × 0.035 mm). Steady-state junction-to-ambient thermal resistance is not specified, since the device is intended for short-duration ESD events rather than continuous power dissipation. Its 150 mW power rating assumes TA = 25°C and derates linearly above that ambient temperature.

Can NNCD24J-T1-A be used in automotive applications?

NNCD24J-T1-A is classified as a Standard-grade Renesas product, qualified for computers, office equipment, and consumer electronics - not for automotive use. It lacks AEC-Q200 qualification and does not meet the extended temperature, vibration, or lifetime requirements of automotive ECUs or infotainment systems. For automotive-grade ESD protection, Renesas offers separate AEC-Q200-qualified diodes such as the RCLAMP series. NNCD24J-T1-A should not be deployed in safety-critical or vehicle-mounted systems.

What is the recommended PCB layout for NNCD24J-T1-A?

Place NNCD24J-T1-A as close as possible to the protected connector - ideally within 5 mm - with short, direct traces to both signal line and ground plane. Use a solid ground pour beneath the device and avoid vias in the ESD current path. Maintain ≥0.2 mm clearance from adjacent high-voltage or RF traces. NNCD24J-T1-A's flat-type package allows for 0.3 mm pad spacing; follow IPC-7351B footprint guidelines for optimal solder joint reliability and thermal performance.