Nexperia USA Inc. PESD2CANFD36UU-QX

Overview

PESD2CANFD36UU-QX from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT323 package, designed to safeguard CAN-FD and FlexRay bus lines against ±15 kV IEC 61000-4-2 ESD events, with 36 V reverse standoff voltage, 4.3 pF capacitance, and 65 V clamping at 16 A TLP pulse - deployed at vehicle ECUs and gateway modules.

For engineers reviewing the PESD2CANFD36UU-QX datasheet, PESD2CANFD36UU-QX pinout, PESD2CANFD36UU-QX application, or PESD2CANFD36UU-QX equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, low inter-channel capacitance mismatch (<0.5%), common-cathode topology for differential bus protection, and SC-70 layout compatibility with high-density automotive PCBs.

Technical Context

This device implements a dual-common-cathode TVS diode architecture with two independent anode-to-common-cathode paths (pins 1–3 and 2–3), enabling symmetrical transient suppression on differential bus pairs without ground reference dependency. Its low 4.3 pF typical capacitance per channel minimizes signal integrity impact on CAN-FD's 5 Mbps and FlexRay's 10 Mbps data rates.

The 36 V VRWM ensures reliable operation across 24 V board net systems while maintaining margin above CAN-FD's ±36 V common-mode range; clamping at 65 V (TLP, 100 ns) and 48 V (IEC 61000-4-5, 1 A) provides defined overvoltage limiting during fast transients and surge events.

Key Specifications

Pinout & Package

Package: SC-70 (SOT323), 3-lead surface-mount plastic package, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive ESD protection applications.

Compared with ESDALC6V1-1M2 and TPD2E001DRYR, PESD2CANFD36UU-QX uniquely delivers 36 V standoff, matched 4.3 pF channels, and AEC-Q101 validation - making it the only qualified solution for CAN-FD, FlexRay, and 24 V board net ESD protection without compromising signal fidelity or thermal robustness.

Availability

PESD2CANFD36UU-QX is available at Aetrix Electronics and suitable for automotive ECU design, vehicle gateway integration, and 24 V commercial vehicle electronics requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PESD2CANFD36UU-QX 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.

This device belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for robust transient suppression on high-speed in-vehicle networks including CAN-FD, FlexRay, and SENT - balancing ultra-low capacitance with AEC-Q101 reliability.

FAQ

What is the maximum continuous reverse voltage this device can block?

The PESD2CANFD36UU-QX has a reverse standoff voltage (VRWM) of 36 V, meaning it reliably blocks up to 36 V DC or steady-state AC voltage across each channel without conduction. At this voltage, reverse leakage remains below 50 nA at 25 °C, ensuring minimal power loss and signal interference in 24 V automotive systems.

How does the common-cathode configuration affect PCB layout?

The common-cathode (Pin 3) requires a single low-inductance ground connection shared by both protected lines. PCB layout must route Pin 3 directly to a solid ground plane using multiple vias, while Pins 1 and 2 connect individually to CANH and CANL - avoiding daisy-chained ground traces that would unbalance clamping response between channels.

Is this device suitable for protecting CAN-FD at 5 Mbps?

Yes - its 4.3 pF typical capacitance per channel introduces negligible rise-time degradation on CAN-FD signals, and its matched capacitance (<0.5% ΔCd/Cd) prevents differential skew. Measured TLP clamping at 65 V (16 A, 100 ns) ensures transceiver input stages remain within safe operating area during ESD events at full data rate.

Does the AEC-Q101 qualification cover temperature cycling and HTRB testing?

Yes - the AEC-Q101 qualification includes temperature cycling (−55 °C to +125 °C, 1000 cycles), high-temperature reverse bias (HTRB at 125 °C, 1000 hrs), and ESD stress testing per IEC 61000-4-2. Full test reports are available upon request and confirm suitability for under-hood and transmission-control module environments.