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PESD2IVN24-T

24V dual bidirectional ESD diode, 0.8pF, SOT-23, IEC 61000-4-2 15kV, CAN/LIN bus protection

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Manufacturer Part：

PESD2IVN24-T

Package：

SOT-23 (2.90 x 1.30 x 1.00 mm, 3-pin)

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Description

Product Overview

The PESD2IVN24-T from Nexperia is a dual bidirectional ESD protection diode in a SOT-23 package. Rated at 24V working voltage with ultra-low clamping voltage, it safeguards high-speed CAN and LIN bus lines from electrostatic discharge transients.

Key Specifications

VRWM 24 V
VCL (8uA/IEC 61000-4-2) 40 V (typical at 8kV contact)
Diode Configuration Dual bidirectional
Capacitance 0.8 pF (typical)
Leakage Current 0.05 uA (typical at VRWM)
IEC 61000-4-2 Rating +/-15 kV contact, +/-25 kV air
Operating Temperature -55C to +150C

Features

  • 24V working voltage suitable for 24V CAN and industrial bus protection
  • 0.8pF ultra-low capacitance for minimal signal distortion on high-speed lines
  • +/-15kV IEC 61000-4-2 contact discharge ESD protection
  • Dual bidirectional diodes in SOT-23 for differential pair protection
  • 40V low clamping voltage ensures connected ICs survive ESD events
  • 0.05uA low leakage current for battery-friendly always-on protection

Applications

  • Automotive CAN bus ESD protection at 24V working voltage
  • Industrial CAN and RS-485 bus transient protection
  • LIN bus and sensor line ESD suppression
  • High-speed differential signal pair protection

The PESD2IVN24-T from Nexperia is a dual bidirectional ESD protection diode in a SOT-23 package, specifically designed to protect one differential signal pair (e.g., CANH/CANL) from electrostatic discharge and other transients. The device features a 24V reverse working voltage (VRWM), making it suitable for 24V automotive CAN bus systems and industrial communication networks. The ultra-low capacitance of 0.8pF typical ensures minimal signal integrity impact on high-speed bus lines, preserving signal edge rates and eye diagrams. The bidirectional configuration protects against both positive and negative ESD strikes on each line, with IEC 61000-4-2 ratings of +/-15kV contact discharge and +/-25kV air discharge. The 40V typical clamping voltage at 8kV contact discharge provides effective protection for downstream transceiver ICs, ensuring the clamped voltage remains well below the absolute maximum ratings of typical CAN transceivers. The 0.05uA typical leakage current at VRWM minimizes power consumption in always-on protection configurations. The SOT-23 package provides a compact footprint for space-constrained applications.

The PESD2IVN24-T uses avalanche diode technology for ESD clamping. (1) Normal Operation: When the bus voltage is within the normal range (below VRWM = 24V), both diodes are in their off state, presenting only the 0.8pF capacitance to the signal line. The extremely low capacitance does not significantly affect the signal integrity of high-speed CAN bus communication. (2) ESD Event: When an ESD strike (positive or negative) occurs on either line, the corresponding diode avalanches at the breakdown voltage, creating a low-impedance path that diverts the ESD current away from the protected IC. The clamping voltage (VCL) of approximately 40V at 8kV contact discharge is the peak voltage the protected IC experiences. (3) Bidirectional: The bidirectional diode configuration means the device protects against both positive and negative polarity ESD events on each line. This is essential for differential bus lines that may experience common-mode transients of either polarity. (4) Recovery: After the ESD event, the diode returns to its high-impedance off state, and normal bus communication resumes without interruption.

Pin Name Type Function
1 I/O 1 I/O ESD protection for line 1 (e.g., CANH)
2 GND Ground Ground connection
3 I/O 2 I/O ESD protection for line 2 (e.g., CANL)
  • Automotive 24V CAN bus ESD protection with 0.8pF low capacitance
  • Industrial CAN and RS-485 bus transient protection at 15kV contact
  • LIN bus and sensor line ESD suppression in SOT-23 compact package
  • High-speed differential signal pair protection with bidirectional clamping
Manufacturer Part Number Package Notes
Nexperia PESD2IVN24-Q SOT-23 AEC-Q101 qualified
TI TPD4E1B06DCKR SOT-363 4-channel, 5.5V, low cap
onsemi NUP2105LT1G SOT-23 Dual, 24V, CAN bus ESD
Infineon TLE8250GVIOXUMA1 SC-74 ESD for CAN FD
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