S558-5999-Q9-F

$5.19

Description：MODULE XFRMR LAN 10/100B-TX SMD
Series：-
Mfr：Bel Fuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:29b9dbf7064d Category: Pulse Transformers Brand: Bel Fuse Inc.

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Product introduction

S558-5999-Q9-F is listed in the Pulse Transformers range at ChipApex. The manufacturer field lists Bel Fuse Inc.. Its product description is MODULE XFRMR LAN 10/100B-TX SMD. Review the specifications below when checking this part for your BOM.

Pulse Transformers specifications for S558-5999-Q9-F

Description：MODULE XFRMR LAN 10/100B-TX SMD
Series：-
Mfr：Bel Fuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Transformer Type：LAN 10/100 Base-T
Inductance：350µH
ET (Volt-Time)：-
Turns Ratio - Primary:Secondary：1CT:1CT Transmitter, 1CT:1CT Receiver
Mounting Type：Surface Mount
Size / Dimension：1.100" L x 0.476" W (27.94mm x 12.09mm)
Height - Seated (Max)：0.236" (5.99mm)
Operating Temperature：0°C ~ 70°C
Grade：-
Qualification：-

Pulse Transformers datasheet and documents for S558-5999-Q9-F

S558-5999-Q9-F

Pulse Transformers Overview

The S558-5999-Q9-F is a LAN pulse transformer module manufactured by Bel Fuse Inc., designed for 10/100 Base-T Ethernet applications. It features an inductance of 350µH with a turns ratio of 1CT:1CT for both transmitter and receiver circuits. The component utilizes a surface mount package measuring 27.94mm in length, 12.09mm in width, and 5.99mm in maximum height. It operates within a temperature range of 0°C to 70°C.

Pulse Transformers Feature Summary

Integrated magnetic module supporting 10/100 Base-T transmission standards
Surface mount construction for automated assembly processes
Symmetrical 1CT:1CT winding configuration for signal integrity

Pulse Transformers Applications

Ethernet network interface cards
LAN port isolation circuits
Industrial communication modules

Pulse Transformers Procurement Notes

Verify the specific suffix Q9 against design requirements to ensure correct pinout and mechanical dimensions. Confirm that the 350µH inductance aligns with the target PHY specifications. Check RoHS compliance status if environmental regulations apply to the final assembly. Validate supplier documentation against the official Bel Fuse datasheet for accuracy.

Pulse Transformers Selection Notes

Select this component when designing for standard 10/100 Mbps Ethernet connectivity requiring compact surface mount solutions. Ensure the PCB footprint matches the 27.94mm x 12.09mm outline. Consider thermal management capabilities within the 0°C to 70°C operational window during system integration planning.

Pulse Transformers Part Context

This part belongs to Bel Fuse's discrete magnetics portfolio for LAN applications. It serves as a critical isolation component between the MAC layer and physical medium. The module consolidates transformer windings into a single SMD package to reduce board space and simplify manufacturing compared to discrete transformer implementations.