Nexperia USA Inc. PESD2CANFD27U-TR

Overview

PESD2CANFD27U-TR from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT23 package, designed for bidirectional transient suppression on CAN-FD and CAN bus lines. It delivers 27 V reverse standoff voltage, 34 V clamping at 1 A, 4.0 pF capacitance, 15 kV IEC 61000-4-2 ESD rating, and AEC-Q101 qualification for under-hood vehicle networking.

For engineers reviewing the PESD2CANFD27U-TR datasheet, PESD2CANFD27U-TR pinout, PESD2CANFD27U-TR application, or PESD2CANFD27U-TR equivalent, key selection criteria include low-capacitance bus-line protection, common-cathode dual-diode topology, junction temperature up to 175 °C, and compliance with ISO 10605 (150 pF/330 Ω) and IEC 61000-4-5 surge standards.

Technical Context

This device implements a dual-anode-to-common-cathode configuration, enabling independent protection of two differential bus lines (e.g., CANH and CANL) with matched 4.0 pF capacitance per channel and <0.5% capacitance mismatch. Its ultra-low dynamic resistance (1.3 Ω) ensures rapid clamping response during sub-nanosecond ESD events.

The SOT23 package supports reflow and wave soldering per JEDEC J-STD-020 and J-STD-002, with thermal performance validated up to 175 °C junction temperature. Device behavior follows IEC 61000-4-2 and ISO 10605 test waveforms, with clamping verified at ±8 kV contact discharge (Fig. 9–10).

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body height. RoHS-compliant, halogen-free, and qualified for lead-free reflow (JEDEC J-STD-020 Level 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP2114 and VC030203A03, PESD2CANFD27U-TR uniquely balances 4.0 pF capacitance, 27 V standoff, 15 kV ISO 10605 compliance, and 175 °C operation-making it optimal for CAN FD gateways and safety-critical powertrain nodes where signal fidelity and thermal resilience are jointly constrained.

Availability

PESD2CANFD27U-TR is available at Aetrix Electronics and suitable for automotive CAN FD gateways, body control modules, and powertrain sensor interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for PESD2CANFD27U-TR 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 specializing in high-performance, high-reliability discrete, logic, and MOSFET devices, with leadership in automotive-grade components.

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

FAQ

What is the maximum peak pulse current this device can handle?

The PESD2CANFD27U-TR is rated for 1.8 A peak pulse current (IPPM) under 8/20 µs waveform per IEC 61000-4-5. This value applies to each channel (pin 1→3 and pin 2→3), confirmed in Table 1 and Table 5 of the datasheet, and validated with non-repetitive surge testing.

Is this device unidirectional or bidirectional?

It is a bidirectional ESD protection device. The internal structure consists of two anode-to-common-cathode diodes (pins 1 and 2 as cathodes, pin 3 as shared cathode), enabling symmetrical clamping for both positive and negative transients on either protected line, as shown in Figure 3's V-I curve.

Does the 4.0 pF capacitance apply to each channel independently?

Yes - the 4.0 pF (typ.) capacitance is measured between pin 1 and pin 3, and identically between pin 2 and pin 3, at 1 MHz and –2.5 V reverse bias. Table 6 confirms matching tolerance of ±0.5%, ensuring balanced loading on differential bus pairs like CANH/CANL.

Can this part replace older CAN ESD protectors like PESD2CAN24V?

No - PESD2CAN24V has 24 V VRWM and higher capacitance (5.5 pF). PESD2CANFD27U-TR's 27 V standoff and 4.0 pF capacitance are optimized for CAN FD's higher voltage margins and speed; substituting requires validation of bus voltage headroom and signal integrity per ISO 11898-2:2016.