S558-5999-Q9-F is out of stock and can be placed on backorder.
Available Substitutes:

Parametric Equivalent


Pulse Electronics
In Stock: 0
Unit Price: $12.21000
Datasheet

Parametric Equivalent


Pulse Electronics
In Stock: 0
Unit Price: $0.00000
Datasheet
350µH LAN 10/100 Base-T Pulse Transformer 1CT:1CT Transmitter, 1CT:1CT Receiver Surface Mount
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

S558-5999-Q9-F

DigiKey Part Number
5923-S558-5999-Q9-FTR-ND - Tape & Reel (TR)
5923-S558-5999-Q9-FCT-ND - Cut Tape (CT)
5923-S558-5999-Q9-FDKR-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
S558-5999-Q9-F
Description
MODULE XFRMR LAN 10/100B-TX SMD
Manufacturer Standard Lead Time
12 Weeks
Customer Reference
Detailed Description
350µH LAN 10/100 Base-T Pulse Transformer 1CT:1CT Transmitter, 1CT:1CT Receiver Surface Mount
Datasheet
 Datasheet
EDA/CAD Models
S558-5999-Q9-F Models
Product Attributes
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Category
Turns Ratio - Primary:Secondary
1CT:1CT Transmitter, 1CT:1CT Receiver
Manufacturer
Bel Fuse Inc.
Mounting Type
Surface Mount
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Size / Dimension
1.100" L x 0.476" W (27.94mm x 12.09mm)
Part Status
Active
Height - Seated (Max)
0.236" (5.99mm)
Transformer Type
LAN 10/100 Base-T
Operating Temperature
0°C ~ 70°C
Inductance
350µH
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (2)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
H1664NLPulse Electronics0553-H1664NL-ND$12.21000Parametric Equivalent
H1664NLTPulse Electronics0H1664NLT-ND$0.00000Parametric Equivalent
In-Stock: 0
320 estimated in stock on 21-Dec-2026
Request Stock Notification
All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$6.11000$6.11
10$5.52000$55.20
25$5.29720$132.43
50$5.13340$256.67
100$4.97390$497.39
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
320$4.71566$1,509.01
640$4.56738$2,923.12
960$4.48254$4,303.24
1,600$4.37763$7,004.21
2,240$4.30971$9,653.75
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.