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Bourns, Inc.

Bourns, Inc.- Transformers & Autotransformers

Bourns, Inc. is a global manufacturer of electronic components, founded in 1947 by Marlan and Rosemary Bourns, with its headquarters in Riverside, California, USA. The company specializes in the design and production of a wide range of passive components, circuit protection devices, and sensors for various industries. Bourns' product portfolio includes trimming potentiometers, precision potentiometers, linear motion potentiometers, and rotary dials, which are widely used in industrial and consumer applications. In the area of circuit protection, Bourns offers thyristor surge protectors, gas discharge tubes, resettable fuses, telecom fuses, and ESD protection products. The company also provides an extensive lineup of inductive components such as transformers, coils, and chokes for power and signal applications. Its resistive product range features chip resistors, chip resistor arrays, and specialty resistors, including current sense and high-power types. Additionally, Bourns manufactures switches, encoders, panel controls, modular contacts, and network interface devices for telecommunications. More recent expansions include microelectronic modules, power semiconductors, and custom integrated passive solutions. Bourns serves key markets like automotive, industrial automation, telecommunications, consumer electronics, and medical equipment. With manufacturing facilities and sales offices around the world, Bourns is recognized as a trusted supplier of high-reliability components, holding a strong position in the niche potentiometer and circuit protection segments.

03

Transformers & Autotransformers - 型号列表

14 parts in total

Turns Ratio - Primary:Secondary

Inductance Range

DC Resistance (DCR) - Primary

Height

Length - Overall

Capacitance Ratio Condition

Depth

Transformer Type

DC Resistance (DCR) - Secondary

Number of Contacts

Insertion Loss (Max)

Inductance - Connected In Series

Packaging

Crosstalk

CMRR, PSRR (Typ)

Return Loss (Min)

Isolation

Standard Package

Minimum Load Required

Lead Style

Mounting Type

RF Family/Standard

Operating Temperature

Mfr Part #Quantity AvailablePriceTurns Ratio - Primary:SecondaryIsolationLead StyleRF Family/StandardInductance RangePackagingMounting TypeStandard PackageEU RoHSDC Resistance (DCR) - PrimaryDepthHeightLength - OverallTransformer TypeNumber of ContactsOperating TemperatureCapacitance Ratio ConditionDC Resistance (DCR) - SecondaryReturn Loss (Min)Insertion Loss (Max)Inductance - Connected In SeriesCrosstalkCMRR, PSRR (Typ)Minimum Load RequiredPackage CooledメーカEnd - SizeNumber of UnitsDistortion RatingTypeSeriesWeightRatingsInductancePart StatusManufacturerCurrent RatioET (Volt-Time)Frequency RangeSize / DimensionTermination StyleDC Resistance (DCR)Current Rating (Amps)Height - Seated (Max)
PT73031L
PT73031L

Telecom Transformer 1:2/1:2 2000Vrms 2.5Ohm/2.5Ohm Prim. DCR 4Ohm/4Ohm Sec. DCR Surface Mount Telecom Transformer 1:2/1:2 2.5Ohm/2.5Ohm Prim. DCR 4Ohm/4Ohm Sec. DCR 16Term. Gull Wing SMD

bourns

10240: ¥19.90021:2/1:22000 VrmsGull WingPT22(Min) mHTubeSurface MountBulkCompliant2.5/2.5 Ohm14.88.1321ISDN S-Interface Transformer16851004/4-----60 dB--------------------
BNSPT61003EL
BNSPT61003EL

Telecom Transformer 1:1 1500Vrms -1dB Surface Mount

bourns

-1:11500 VrmsGull WingPT0.35(Min) mH--------------12@60MHz to 100MHz dB-1@1MHz to 125MHz dB--30@60MHz to 100MHz dB-35@60MHz to 100MHz dB---------------------
BNSPT74344EL
BNSPT74344EL

Telecom Transformer 1:1.15CT:1CT:2CT 1500Vrms 0.7Ohm/0.7Ohm Prim. DCR 0.7Ohm/1Ohm Sec. DCR Surface Mount

bourns

-1:1.15CT:1CT:2CT1500 VrmsGull WingPT1.2(Min)/1.2(Min) mH----0.7/0.7 Ohm----------------------------------
PT61023EL
PT61023EL

Telecom Transformer 1CT:1 1500VAC 0.9Ohm Prim. DCR -1.1dB Surface Mount Telecom Transformer 1CT:1 0.9Ohm Prim. DCR 24Term. Gull Wing SMD

bourns

3461: ¥19.6521CT:11500 VacGull WingPT0.35(Min) mHTape and ReelSurface MountBulkCompliant0.9 Ohm18.86.813.810/100/1000Base-T Transformer247025(Typ)--12@60MHz to 80MHz dB-1.1@0.3MHz to 100MHz dB0.5-28@60MHz to 100MHz dB-30@80MHz to 100MHz dB---------------------
SM74346EL
SM74346EL

Telecom Transformer 1CT:2CT/1CT:2CT 1500VAC 1.4Ohm/0.7Ohm Prim. DCR 1.4Ohm/0.7Ohm Sec. DCR Surface Mount Telecom Transformer 1CT:2CT/1CT:2CT 1.4Ohm/0.7Ohm Prim. DCR 1.4Ohm/0.7Ohm Sec. DCR 16Term. Gull Wing SMD

bourns

10700: ¥12.23931CT:2CT/1CT:2CT1500 VacGull WingSM1.2(Min) mHTape and ReelSurface MountTape & ReelCompliant1.4/0.79.586.2212.83T1/CEPT/ISDN-PRI Transformer167030/301.4/0.7--0.6-----------------------
SM75719EL
SM75719EL

Telecom Transformer 2CT:1/0.395:1/2CT:1/1.58:1 1500VAC 1.3Ohm/0.6Ohm Prim. DCR 0.8Ohm/0.8Ohm Sec. DCR Surface Mount Telecom Transformer 2CT:1/0.395:1/2CT:1/1.58:1 1.3Ohm/0.6Ohm Prim. DCR 0.8Ohm/0.8Ohm Sec. DCR 12Term. Gull Wing SMD

bourns

10900: ¥20.25792CT:1/0.395:1/2CT:1/1.58:11500 VacGull WingSM-Tape and ReelSurface MountTape & ReelCompliant1.3/0.6 Ohm15.248.6317.14T1/CEPT/ISDN-PRI Transformer1270400.8/0.820(Typ)@0.1MHz to 3.2MHz dB-------------------------
BNSPT61004L
BNSPT61004L

Telecom Transformer 1:1 1500Vrms -1dB Surface Mount

bourns

-1:11500 VrmsGull WingPT---------------15@5MHz to 10MHz dB-1@1MHz to 10MHz dB--35@5MHz to 10MHz dB-45@100MHz dB---------------------
BNSSM51108EL
BNSSM51108EL

Telecom Transformer 1CT:1CT 1500VAC -1.2dB Surface Mount

bourns

10700: ¥14.42351CT:1CT1500 VacGull WingSM0.35(Min) mH--------------12@60MHz to 80MHz dB-1.2@1MHz to 100MHz dB--35@100MHz dB-33@100MHz dB---------------------
PT23101L
PT23101L

Telecom Transformer 1:1 2000Vrms 2.4Ohm Prim. DCR 2.4Ohm Sec. DCR Through Hole 固定インダクタ ISDN TRANSFORMER Telecom Transformer 1:1 2.4Ohm Prim. DCR 2.4Ohm Sec. DCR 6Term. PC Pin Thru-Hole

bourns

101008: ¥18.23011:12000 VrmsPC PinPT28(Min) mHTubeThrough HoleBulkCompliant2.4(Typ)1410.214ISDN Transformer6701302.4(Typ)--5---DIPBournsSMD/SMT36----------------
PT539-1L
PT539-1L

Telecom Transformer 1:1 1500Vrms 3Ohm Prim. DCR 3Ohm Sec. DCR Telecom Transformer 1:1 3Ohm Prim. DCR 3Ohm Sec. DCR 10Term. PC Pin Thru-Hole

bourns

10120: ¥8.13281:11500 VrmsPC PinPT5(Typ) mHTrayThrough HoleBulkCompliant31412.714.2ADSL Transformer1085-3-<0.5@0.1MHz dB18--40@0.025MHz to 1.1MHz dBDIP----80@30KHz---------------
PT75426EL
PT75426EL

Telecom Transformer 1:1 1500VAC Surface Mount Telecom Transformer 1:1 6Term. Gull Wing SMD

bourns

1010400: ¥18.9041:11500 VacGull WingPT0.1(Min) mHTape and ReelSurface MountBulkCompliant-10.86.557.7T3/DS3/E3/STS-1 Transformer68510---0.11-----------------------
SM51295EL
SM51295EL

ISDN TRANSFORMER

bourns

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SM51524EL
SM51524EL

MAGNETICS - POE LAN TRANSFORMER

bourns

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PCS040-EF1308KS
PCS040-EF1308KS

. PCS040-EF1308KS - 40 A 1:100 Current Sense Transformer 1MHz 1mOhm Primary, 1.45Ohm Secondary Max 8.5 mH Surface Mount from Bourns Inc.. from now!

Bourns, Inc.

105400: ¥19.51891:100----Tape & Reel (TR)Surface Mount----------------------InvasivePCS--8.5 mHActiveBourns Inc.100:1254VµS1MHz-Gull Wing1mOhm Primary, 1.45Ohm Secondary Max40 A0.413" (10.50mm)
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