S558-5999-K6-F

$1.56

Description：XFRMR MOD LAN 10/100BT 12P SMD
Series：-
Mfr：Bel Fuse Inc.
Package：Tape & Reel (TR)

SKU:3fda75f9726b Category: Pulse Transformers Brand: Bel Fuse Inc.

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Product introduction

S558-5999-K6-F is listed in the Pulse Transformers range at ChipApex. The manufacturer field lists Bel Fuse Inc.. Its product description is XFRMR MOD LAN 10/100BT 12P SMD. Review the specifications below when checking this part for your BOM.

Pulse Transformers specifications for S558-5999-K6-F

Description：XFRMR MOD LAN 10/100BT 12P SMD
Series：-
Mfr：Bel Fuse Inc.
Package：Tape & Reel (TR)
Transformer Type：LAN 10/100 Base-T
Inductance：400µH
ET (Volt-Time)：-
Turns Ratio - Primary:Secondary：1CT:1 Transmitter, 1CT:1CT Receiver
Mounting Type：Surface Mount
Size / Dimension：0.590" L x 0.470" W (14.99mm x 11.94mm)
Height - Seated (Max)：0.196" (4.98mm)
Operating Temperature：-
Grade：-
Qualification：-

Pulse Transformers datasheet and documents for S558-5999-K6-F

S558-5999-K6-F

Pulse Transformers Overview

The S558-5999-K6-F is a surface-mount LAN pulse transformer module designed for 10/100 Base-T applications. It features an inductance of 400µH and a turns ratio of 1CT:1 for the transmitter and 1CT:1CT for the receiver. The component measures 14.99mm in length, 11.94mm in width, and has a maximum height of 4.98mm. It operates within a temperature range of 0°C to +70°C and carries MSL level 2 moisture sensitivity classification.

Pulse Transformers Feature Summary

Integrated magnetic module providing signal isolation and impedance matching for Ethernet transceivers
Surface-mount construction optimized for automated PCB assembly processes
Designed to meet electromagnetic interference requirements for 10/100 Base-T networks

Pulse Transformers Applications

Ethernet network interface cards
Computer motherboards with integrated LAN ports
Industrial networking equipment

Pulse Transformers Procurement Notes

This component is officially marked as obsolete and no longer manufactured by Bel Fuse Inc. Procurement should focus on verified replacement sources or equivalent new production parts. Verify that any substitute component matches the original electrical specifications and physical footprint before integration into designs.

Pulse Transformers Selection Notes

Engineers selecting this part must account for its discontinued status. Design reviews should prioritize components with active supply chains. If redesigning, ensure the replacement maintains identical pinout compatibility and satisfies the same regulatory certifications required for the end product.

Pulse Transformers Part Context

Bel Fuse Inc. produced this module as part of their discrete magnetics portfolio for LAN connectivity. The S558 series represents modular solutions intended to simplify circuit board layout by combining multiple magnetic functions into a single surface-mount package.