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Bel Fuse Inc.

Bel Fuse Inc.- Transformers & Autotransformers

Bel Fuse Inc. is a global manufacturer of electronic components founded in 1949 and headquartered in Jersey City, New Jersey, USA. The company specializes in providing power, protection, and connectivity solutions for a wide range of industries. Its core product areas include circuit protection devices, power conversion modules, and high-speed connectors. The Bel Power Solutions lineup features isolated and non-isolated DC-DC converters, AC-DC power supplies, and custom power modules for networking and telecom infrastructure. Through its Bel Magnetic Solutions segment, it delivers integrated connector modules (RJ45 with magnetics), discrete transformers, and inductors critical for high-reliability data transmission. The Bel Connectors portfolio includes high-density backplane connectors, micro-miniature connectors, and harsh-environment circular connectors for demanding applications. Bel Fuse serves major clients in telecommunications, data centers, industrial automation, medical equipment, and next-generation wireless systems such as 5G and IoT. As a strategic supplier to market leaders like Cisco, Nokia, and Ericsson, the company helps engineer cutting-edge devices that enable global high-speed connectivity. With decades of innovation and vertically integrated manufacturing, Bel is recognized for its engineering excellence and robust quality management. The company trades on NASDAQ under the symbol BELFA and BELFB, underscoring its established presence in the electronic components sector.

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Transformers & Autotransformers - 型号列表

594 parts in total

Turns Ratio - Primary:Secondary

Inductance Range

RF Family/Standard

DC Resistance (DCR) - Primary

Return Loss (Min)

Isolation

Standard Package

Lead Style

Insertion Loss (Max)

Mfr Part #Quantity AvailablePriceStandard PackageIsolationTurns Ratio - Primary:SecondaryLead StyleRF Family/StandardInductance RangeDC Resistance (DCR) - PrimaryReturn Loss (Min)Lead TimeSubcategoryInsertion Loss (Max)PackagingCrosstalkCMRR, PSRR (Typ)
0553-5006-OC
0553-5006-OC

DATA COUPLING XFMR 2CT:1CT

bel

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0553-5006-PC
0553-5006-PC

DATA COUPLING XFMR, 2:1:1

bel

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0559-6200-10
0559-6200-10

Telecom Transformer 1:2 3000Vrms 2.8Ohm Prim. DCR 5.5Ohm Sec. DCR Through Hole

bel

-Bulk3000 Vrms1:2PC Pin055922(Min) mH2.8(Typ) Ohm-------
2771A
2771A

PULSE TRANSFORMER

bel

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S553-6500-91
S553-6500-91

Telecom Transformer 1:1.35CT 1500Vrms 1.9Ohm Prim. DCR 2.5Ohm Sec. DCR Surface Mount

bel

-Tape & Reel1500 Vrms1:1.35CTGull WingS5531.3(Min) mH1.9 Ohm-------
S553-6500-96
S553-6500-96

Telecom Transformer 1:1.15CT/1CT:2CT 1500Vrms 0.8Ohm/0.8Ohm Prim. DCR 1Ohm/1.5Ohm Sec. DCR Surface Mount

bel

-Tape & Reel1500 Vrms1:1.15CT/1CT:2CTGull WingS5531.5(Min)/1.5(Min) mH0.8/0.8 Ohm22/19 dB------
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S555-2999-00
S555-2999-00

Telecom Transformer 1:1 1500Vrms 0.65Ohm Prim. DCR 0.65Ohm Sec. DCR Surface Mount

bel

-Tape & Reel1500 Vrms1:1Gull WingS5551(Typ) mH--168 DaysTelecom Transformer-Tape and Reel--
S558-5999-32B
S558-5999-32B

10/100BASE-T, PCMCIA .094', BULK

bel

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0560-6600-15
0560-6600-15

Telecom Transformer 1.8CT:1CT 1500Vrms 6Ohm Prim. DCR 3Ohm Sec. DCR Through Hole

bel

-Bulk1500 Vrms1.8CT:1CTPC Pin05602.75(Typ) mH6 Ohm20@0.04MHz to 0.2MHz dB------
2718AW
2718AW

DESIGNED FOR ITU-T BASIC RATE OR 2B + 1 D 192 KBITS/S

bel

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2753B
2753B

MODEM TRANSFORMER

bel

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S553-1506-AEB
S553-1506-AEB

10BASE-T, AUI XFMR, BULK

bel

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S553-5841-24B
S553-5841-24B

10BASE-T, QUAD XFMR MODULE, BULK

bel

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S558-5999-30B
S558-5999-30B

10/100BASE-T, SINGLE XFMR MODULE, BULK

bel

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S558-5999-C5
S558-5999-C5

Telecom Transformer 2CT:1 2000Vrms 0.3Ohm Prim. DCR 1Ohm Sec. DCR Surface Mount

bel

-Tape & Reel2000 Vrms2CT:1Gull WingS558-0.3 Ohm-------
S558-5999-J0
S558-5999-J0

Telecom Transformer 2CT:1CT/1:1 1500Vrms -1dB Surface Mount

bel

-Tape & Reel1500 Vrms2CT:1CT/1:1Gull WingS5580.35 mH--12@60MHz to 80MHz dB---1@0.1MHz to 100MHz dB--35@100MHz dB30@0.1MHz to 100MHz dB
S560-6600-30
S560-6600-30

Telecom Transformer 1CT:1CT 1500Vrms 3Ohm Prim. DCR 3Ohm Sec. DCR 0.5dB Surface Mount

bel

-Tape & Reel1500 Vrms1CT:1CTGull WingS5605(Typ) mH-16.5@0.04MHz to 0.3MHz dB168 DaysTelecom Transformer0.5@0.1MHz dB---
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