RF Transformers

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Part RoHS Manufacturer Transformer Type Mounting Feature Manufacturer Series Approvals (V) Terminal Finish Impedance (Primary) Power Rating Impedance (Secondary) No. of Winding (Primary) Isolation Voltage Insertion Loss Inductance (Primary) Packing Method Output Current-1 Maximum DC Unbalance Current No. of Winding (Secondary) Sub-Category Dimensions Maximum Operating Temperature Application Minimum Cutoff Frequency Minimum Operating Temperature Height Width Diameter Nominal Input Voltage (V) Load Resistance Additional Features JESD-609 Code Maximum Cutoff Frequency Minimum Operating Frequency Length Turns Ratio (Np:Ns) Maximum Operating Frequency

UWB4-45EC

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

AEC-Q200

Tin/Silver/Copper (Sn/Ag/Cu)

1.3 dB

7.5 uH

TR, EMBOSSED PLASTIC, 7 INCH

125 Cel

.5 GHz

-40 Cel

3.175 mm

3.175 mm

IMPEDANCE RATIO IS 1:4

e1

4500 MHz

4.06 mm

WB1.5-6SLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

Matte Tin (Sn) - with Nickel (Ni) barrier

.26 dB

56 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.05 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 1.5

e3

325 MHz

8.26 mm

WB1010-1-PCL

Coilcraft

RF TRANSFORMER

THROUGH HOLE MOUNTED

WB1010

Matte Tin (Sn) - with Nickel (Ni) barrier

95 uH

TUBE

L8.26XB7.24XH5.72 (mm)

85 Cel

.04 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 1

e3

175 MHz

8.26 mm

WB1010-1-SMLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

WB1010

Matte Tin (Sn) - with Nickel (Ni) barrier

95 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.04 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 1

e3

175 MHz

8.26 mm

WB2010-1-SMLB

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

WB2010

Matte Tin (Sn) - with Nickel (Ni) barrier

95 uH

TR

L8.26XB7.24XH5.72 (mm)

85 Cel

.04 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 1

e3

175 MHz

8.26 mm

WB3010-SMLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

WB3010

Matte Tin (Sn) - with Nickel (Ni) barrier

780 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.005 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 1

e3

100 MHz

8.26 mm

WB4-1HSLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

Matte Tin (Sn) - with Nickel (Ni) barrier

.5 dB

25 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.1 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 4

e3

500 MHz

8.26 mm

WB9-1SLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

Matte Tin (Sn) - with Nickel (Ni) barrier

.57 dB

25 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.125 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 9

e3

125 MHz

8.26 mm

WBC4-1WLB

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

Tin/Silver/Copper (Sn95.5Ag4.0Cu0.5)

.25 W

1

300 V

.9 dB

5 uH

TR

.25 A

1

Other Transformers

L4.45XB4.19XH3.05 (mm)

85 Cel

ISOLATION

.5 GHz

-40 Cel

3.05 mm

4.19 mm

.12 ohm

IMPEDANCE RATIO IS 1:4

e1

1000 MHz

500 KHz

4.45 mm

1000000 KHz

WBC4-4LB

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

TIN SILVER COPPER

1 dB

9 uH

TR

L4.45XB4.19XH3.05 (mm)

85 Cel

.25 GHz

-40 Cel

3.05 mm

4.19 mm

IMPEDANCE RATIO IS 1:4

e1

800 MHz

4.45 mm

WBT16-1L

Coilcraft

RF TRANSFORMER

THROUGH HOLE MOUNTED

Matte Tin (Sn) - with Nickel (Ni) barrier

.5 dB

25 uH

TUBE

L8.26XB7.24XH5.72 (mm)

85 Cel

.1 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 16

e3

100 MHz

8.26 mm

WBT4-1SLD

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

Matte Tin (Sn) - with Nickel (Ni) barrier

.26 dB

45 uH

TR, EMBOSSED PLASTIC, 13 INCH

L8.26XB7.24XH5.72 (mm)

85 Cel

.04 GHz

-40 Cel

5.72 mm

7.24 mm

IMPEDANCE RATIO IS 1 : 3

e3

150 MHz

8.26 mm

YA9308-AEC

Coilcraft

RF TRANSFORMER

SURFACE MOUNT

AEC-Q200

.5 dB

54 uH

TR, EMBOSSED PLASTIC, 7 INCH

125 Cel

.1 GHz

-40 Cel

3.05 mm

4.19 mm

950 MHz

4.45 mm

DXW21BN2511NL

Murata Manufacturing

RF TRANSFORMER

SURFACE MOUNT

1 dB

TR, EMBOSSED, 7 INCH

85 Cel

13.56 GHz

-40 Cel

1.2 mm

1.2 mm

20

2 mm

BAL-WILC10-01D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

.8 dB

TR, 7 INCH

105 Cel

2400 GHz

-40 Cel

.63 mm

.946 mm

HEIGHT DIMENSION INCLUDES TERMINAL ALSO

2500 MHz

.946 mm

BAL-UWB-01E3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.2 dB

TR, 7 INCH

105 Cel

3000 GHz

-40 Cel

8000 MHz

BAL-2690D3U

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.1 dB

TR

85 Cel

2402 GHz

-40 Cel

.695 mm

.96 mm

2480 MHz

.96 mm

BAL-2593D5U

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

BAL-2593D5U

1.2 dB

TAPE & REEL

1.31mm X 1.21mm X 0.74mm

85 Cel

2400 GHz

-30 Cel

.74 mm

1.21 mm

2500 MHz

1.31 mm

BALF-NRF01E3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

2.7 dB

TR, 7 INCH

105 Cel

2400 GHz

-40 Cel

.48 mm

1.1 mm

2540 MHz

1.6 mm

BALF-ATM-01E3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.3 dB

TR, 7 INCH

105 Cel

2400 GHz

-40 Cel

.455 mm

1.35 mm

2500 MHz

2.1 mm

BALF-CC26-05D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.5 dB

TR, 7 INCH

105 Cel

2400 GHz

-40 Cel

.63 mm

1.02 mm

2500 MHz

1.485 mm

BALF-2690-02D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.2 dB

TR

85 Cel

2400 GHz

-40 Cel

.69 mm

.99 mm

2500 MHz

1.69 mm

BALF-NRF01J5

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

2.4 dB

TR

85 Cel

2400 GHz

-40 Cel

.21 mm

.845 mm

2540 MHz

1.375 mm

BAL-CW1250D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

Tin/Silver/Copper (Sn/Ag/Cu)

.97 dB

TR, 7 INCH

85 Cel

2400 GHz

-30 Cel

.69 mm

1.04 mm

e1

2500 MHz

1.25 mm

BALF-NRG-02J5

STMicroelectronics

RF TRANSFORMER

BALFLB-WL-08D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

2.2 dB

TR

105 Cel

470 GHz

-40 Cel

510 MHz

BALFHB-WL-04D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.5 dB

TR

105 Cel

862 GHz

-40 Cel

.68 mm

1.88 mm

HEIGHT DIM INCLUDE TERMINAL ALSO

928 MHz

2.15 mm

BALFHB-WL-01D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.45 dB

TR

105 Cel

862 GHz

-40 Cel

.68 mm

1.88 mm

HEIGHT DIM INCLUDE TERMINAL ALSO

2.15 mm

BALFHB-WL-02D3

STMicroelectronics

RF TRANSFORMER

BALFHB-WL-05D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

1.4 dB

TR

105 Cel

862 GHz

-40 Cel

.68 mm

1.88 mm

928 MHz

2.15 mm

BALFLB-WL-09D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

2.15 dB

TR

105 Cel

470 GHz

-40 Cel

.68 mm

1.88 mm

HEIGHT DIM INCLUDE TERMINAL ALSO

510 MHz

2.15 mm

BALFLB-WL-07D3

STMicroelectronics

RF TRANSFORMER

SURFACE MOUNT

2.15 dB

TR

105 Cel

470 GHz

-40 Cel

.68 mm

1.88 mm

HEIGHT DIM INCLUDE TERMINAL ALSO

510 MHz

2.15 mm

RF Transformers

RF transformers are a type of transformer used in radio frequency (RF) applications to match impedances and transform signal levels between different stages of a circuit. They are commonly used in RF amplifiers, filters, and mixers.

The primary function of an RF transformer is to match the impedance of the input and output stages of an RF circuit. Impedance matching is critical in RF applications to ensure maximum power transfer and signal integrity. RF transformers also help to transform the signal levels between stages of an RF circuit, such as between a high-impedance antenna and a low-impedance amplifier.

RF transformers are typically designed to operate at high frequencies, ranging from a few kHz to several GHz, depending on the specific application. They are also designed to handle high power levels and have low losses. The design of an RF transformer is usually optimized for a specific frequency range and bandwidth.

RF transformers are typically constructed with a magnetic core made of ferrite, powdered iron, or other high-permeability materials, and one or more coils wound around the core. The coils are usually made of copper wire with a thin insulating layer. The number of turns and the size of the wire are determined by the required impedance transformation and the frequency range of the circuit.