SP4044 and SP4045 are Littelfuse ESD builds for Gigabit Ethernet protection. Free Technical Library News

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SP4044 and SP4045 - Littelfuse ESD Assemblies for Gigabit Ethernet Protection

13.08.2016

Littelfuse has released two new Gigabit Ethernet and HDBaseT ESD builds SP4044-04ATG and SP4045-04ATG. The assemblies are an integrated solution based on TVS diodes designed to protect sensitive electronics from electrostatic and induced discharges.

The assemblies consist of 8 low-capacity TVS diodes and 1 additional Zener diode, which allows them to be used for full (Bidirectional) protection of 4 high-speed interface lines.

The assemblies are made in a miniature MSOP-10 package for SMT mounting. Despite ultra-low parasitic capacitance of 1,5 pF (minimizes negative impact on signal integrity and data loss) and dynamic resistance of up to 0,3 ohm, the SP4044 and SP4045 assemblies provide an excellent level of protection: the ability to absorb currents up to 24A (according to IEC61000-4- 5) and withstand electrostatic up to ±30kV (according to IEC61000-4-2).

The difference between the SP4044 and SP4045 assemblies is in the operating voltage. SP4044-04ATG - designed to work with 2,8 V level signals, SP4045-04ATG - designed to protect interfaces with a 3,3 V physical level.

Features of SP4044 and SP4045:

ESD protection, IEC61000-4-2, contact: ±30 kV, air: +-30 kV
Absorbed currents: 24A (IEC 61000-4-5, 8/20ns), 40A (IEC 61000-4-4, 5/50ns)
Peak pulse power: 500W (SP4044) and 600W (SP4045)
Low capacitance value: 1,5pF
Low dynamic resistance: 0,22 ohm (SP4044) and 0,3 ohm (SP4045)
Miniature MSOP-10 Enclosure

Application:

2,5 and 5 Gigabit Ethernet protection
HDBaseT protection
10/100/1000 Ethernet protection
Protection of T1/E1 and T3/E3 digital channels
Protection of Hi-End audio/video equipment.

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