SZNUP2105LT1G: 27 V ESD Protection Diode, Dual Line CAN Bus Protector, SOT-23

onsemi

The SZNUP2105LT1G from onsemi is a dual-line ESD protection diode specifically designed to safeguard CAN transceivers in high-speed and fault-tolerant networks against electrostatic discharge (ESD) and other transient voltage events. This component is housed in a compact SOT-23 package, offering a cost-effective solution for enhancing system reliability and fulfilling strict EMI requirements.

Featuring a peak power dissipation of 350 W per line and low reverse leakage current (< 100 nA), it ensures minimal impact on the data line's signal integrity. Its low capacitance supports high-speed CAN data rates, making it suitable for applications requiring robust data transmission. The device is compliant with several industry standards, including IEC 61000-4-2 (ESD) at Level 4, 30 kV, and various ISO 7637 pulses, highlighting its capability to withstand severe transient conditions.

• Peak Power Dissipation: 350 W per line (8/20 μs waveform)
• Reverse Leakage Current: < 100 nA
• Capacitance: ≤ 30 pF (VR = 0 V, f = 1 MHz)
• Operating Junction Temperature Range: -55 to 150 °C
• Clamping Voltage: Up to 44 V at 8 A (8/20 μs waveform)
• ESD Protection: Up to 30 kV (IEC 61000-4-2)
• Package: SOT-23

• Industrial Control Networks
• Smart Distribution Systems (SDS)
• DeviceNet
• Automotive Networks (Low and High-Speed CAN, Fault Tolerant CAN)

Electrostatic Discharge (ESD) protection diodes are critical components in safeguarding electronic circuits from sudden and unexpected electrical discharges. These diodes are designed to protect sensitive components by clamping transient voltages to a safe level, preventing damage to the circuit.

ESD protection diodes are particularly important in environments where electronic devices are susceptible to static electricity or other transient electrical events. They find applications in a wide range of sectors, including automotive, industrial control, and communication networks, where reliability and data integrity are paramount.

When selecting an ESD protection diode, engineers should consider several factors, including the working voltage, peak pulse power dissipation, clamping voltage, and capacitance. These parameters determine the diode's ability to protect the circuit without significantly affecting the signal integrity. The package type and size are also important considerations, especially in compact designs.

The SZNUP2105LT1G exemplifies a specialized ESD protection diode designed for CAN bus applications, offering robust protection in a compact package. Its specifications make it suitable for protecting high-speed data lines against ESD and other transient voltage events, ensuring reliable communication in demanding environments.