Nexperia USA Inc. PESD2CANFD27V-UX

Overview

PESD2CANFD27V-UX from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT323 (SC-70) package, designed to safeguard CAN-FD and CAN bus lines against IEC 61000-4-2 ±20 kV and ISO 10605 ±20 kV (C = 150 pF, R = 330 Ω) transients, with 27 V reverse standoff voltage, 33 V clamping at 1 A, and 6 pF typical capacitance.

For engineers reviewing the PESD2CANFD27V-UX datasheet, PESD2CANFD27V-UX pinout, PESD2CANFD27V-UX application, or PESD2CANFD27V-UX equivalent, this device is selected for high-speed, low-capacitance ESD protection in AEC-Q101-compliant automotive networks where signal integrity, junction temperature resilience up to 175 °C, and bidirectional transient suppression are critical.

Technical Context

This dual-cathode ESD protection array integrates two matched unidirectional TVS diodes sharing a common cathode (Pin 3), enabling symmetrical clamping on CANH and CANL lines without polarity inversion. Its 6 pF capacitance (f = 1 MHz, VR = ±2.5 V) and <0.5% capacitance matching ensure minimal signal distortion on 5 Mbps CAN-FD buses.

The device operates within a -55 °C to +175 °C ambient range and delivers 33 V clamping (typ.) at 1 A 8/20 µs surge, with dynamic resistance of 0.8 Ω - optimized for fast energy diversion while preserving bus timing margins and common-mode choke compatibility.

Key Specifications

Pinout & Package

Package: SOT323 (SC-70), 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-line automotive ESD protection applications.

Compared with NUP4202MR6T1G and TPD2E001DRYR, PESD2CANFD27V-UX uniquely combines AEC-Q101 qualification, ±20 kV ISO 10605 compliance, 6 pF capacitance, and 27 V standoff - making it the only option validated for CAN-FD, FlexRay, and SENT in engine compartment deployments.

Availability

PESD2CANFD27V-UX is available at Aetrix Electronics and suitable for automotive CAN-FD gateways, body control modules, ADAS domain controllers, and powertrain communication interfaces requiring stable component supply across multi-year vehicle production cycles.

Supply support for PESD2CANFD27V-UX 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 logic, analog, and discrete components, with leadership in automotive-qualified protection devices and process technologies.

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, CAN, FlexRay, and SENT - balancing low capacitance, high surge capability, and AEC-Q101 compliance.

FAQ

What is the maximum recommended PCB trace length between PESD2CANFD27V-UX and the protected CAN connector?

Per Nexperia application guidance, the trace length from Pin 1 (K1) or Pin 2 (K2) to the protected line must be ≤2 mm, and the trace from Pin 3 (CC) to the nearest low-inductance ground plane via should be ≤3 mm. Longer traces increase inductance, degrading clamping response and risking overshoot beyond 33 V during 1 ns ESD rise times.

Can PESD2CANFD27V-UX protect both CANH and CANL simultaneously during a common-mode ESD event?

Yes - its dual-cathode architecture allows simultaneous clamping of both lines to the common cathode (Pin 3). During a common-mode ±8 kV ESD pulse, measured clamping is +31.1 V (Fig. 9) and −30.7 V (Fig. 10) at 30 ns, confirming symmetrical suppression without cross-talk or imbalance.

Is the 6 pF capacitance specified at DC bias or AC signal conditions?

The 6 pF value is measured at 1 MHz with ±2.5 V reverse bias (VR = ±2.5 V), per Table 6. This reflects real-world CAN-FD signal conditions where common-mode voltage swings near ±2.5 V, ensuring accurate modeling of capacitive loading on the bus.

Does PESD2CANFD27V-UX require external series impedance for optimal performance?

No - it is designed for direct placement at the connector with no series resistor. Adding series impedance would delay clamping response and reduce effectiveness against fast-rising ESD pulses. Layout best practices (short traces, ground vias, no shared return paths) replace the need for external components.