Nexperia USA Inc. PESD24VL1BA,115

Overview

PESD24VL1BA from Nexperia is a bidirectional ESD protection diode in SOD323 package, designed to safeguard single-ended signal lines against IEC 61000-4-2 (±23 kV contact) and IEC 61000-4-5 (3 A surge) transients. It features 24 V reverse standoff voltage, 11 pF capacitance at 1 MHz, and clamps to 70 V at 3 A pulse current - ideal for high-speed USB 2.0, HDMI, and audio line protection.

For engineers reviewing the PESD24VL1BA datasheet, PESD24VL1BA pinout, PESD24VL1BA application, or PESD24VL1BA equivalent, key selection criteria include low capacitance for signal integrity, bidirectional clamping symmetry, sub-1 nA leakage at 24 V, and validated 200 W peak pulse power handling in compact SOD323 footprint.

Technical Context

This device implements a dual-cathode, symmetric TVS structure enabling equal clamping for positive and negative ESD events without polarity dependency. Its silicon design achieves ultra-low junction capacitance (11 pF typical) while maintaining robust 23 kV IEC 61000-4-2 ESD immunity and 3 A IEC 61000-4-5 surge capability.

The diode operates with reverse standoff voltage of 24 V and breakdown voltage of 27.8 V (typ), delivering 70 V clamping at 3 A with differential resistance under 300 Ω. Thermal derating follows standard JEDEC curves, supporting continuous operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

Package: SOD323 (SC-76), plastic surface-mount, 2-pin, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch. Marking code: AF.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PESD24VL1BA, NUP4202MR6T1G trades 19 pF higher capacitance and 8 kV lower ESD rating for broader availability and lower unit cost, while VEML6030X01 is functionally incompatible and must be excluded from ESD protection consideration.

Availability

PESD24VL1BA is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control channel safeguarding, and industrial RS-485 termination requiring stable component supply across production ramps and long-life designs.

Supply support for PESD24VL1BA 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

This device belongs to Nexperia's ESD Protection Diodes product line, engineered specifically for board-level I/O protection in consumer, computing, and industrial electronics where space, capacitance, and ESD robustness are critical.

FAQ

Is PESD24VL1BA suitable for protecting USB 3.0 SuperSpeed lines?

No. With 11 pF capacitance, it exceeds the ≤1.5 pF typical limit required for 5 Gbps USB 3.0 differential signaling. It is qualified for USB 2.0 (480 Mbps) and lower-speed interfaces only. For USB 3.0, Nexperia recommends PESD5V0S1BA (0.6 pF) or equivalent low-capacitance alternatives.

Can PESD24VL1BA be used on a 3.3 V digital I/O line?

Yes. Its 24 V reverse standoff voltage provides ample margin above 3.3 V rail, and its <1 nA leakage at 24 V ensures negligible loading. Clamping begins at ~25.4 V (breakdown), so normal 0–3.3 V operation remains fully unaffected until ESD occurs.

What is the thermal derating behavior above 25 °C ambient?

Peak pulse power decreases linearly with junction temperature: at 125 °C, PPPM drops to ~60% of 200 W (≈120 W); at 150 °C, it falls to ~40% (≈80 W). Derating follows Fig. 4 in the datasheet and requires PCB copper area and layout to maintain Tj ≤150 °C during surge events.

Does PESD24VL1BA require external series impedance for optimal ESD performance?

No external resistor is required for basic ESD clamping, but layout best practices mandate placement within 2 mm of the protected connector and direct grounding via short, wide traces. Adding a 0–10 Ω series resistor may reduce ringing on very fast edges but is not specified in the datasheet and may affect timing margins.