MiniWidebandTransformers–WBC

Document 424 -1

Document 424-1 Revised 07/01/15

Impedance

Insertion

Pins 4–6 (primary) Pins 1–3 (secondary)

DC

Part

Bandwidth loss max

Color

Schematic

pri:sec

(MHz)

(dB)

(µH)

(mOhm)

(µH)

(mOhm)

max (mA)

dot

WBC1-1L_

A

1

:1

0.400 – 600

0.40

10

120

10

120

—

Brown

WBC1-1TL_

B

1

:1

0.250 – 750

0.58

9.5

75

9.5

75

36

Brown

WBC2-1TL_

B

1

:2

0.200 – 500

0.50

10

120

20

150

8.5

Red

WBC3-1TL_

B

1

:3

0.300 – 900

0.60

9

100

27

150

8.5

Orange

WBC4-1TL_

B

1

:4

0.250 – 750

1.0

9

55

36

120

30

Yellow

WBC4-14L_

B

1

:4

1.500 – 1200

2.0

2

50

8

100

15

Green

WBC4-1WL_

B

1

:4

0.500 – 1000

0.90

5

80

20

120

10

White

WBC4-6TL_

B

1

:4

0.300 – 700

0.65

9

80

36

200

7.5

Blue

WBC8-1L_

D

1

:8

0.150 – 600

0.60

22

120

176

310

17

Gray

WBC9-1L_

B

1

:9

0.300 – 500

0.54

9

80

81

230

5

White

WBC16-1TL_

B

1

:16

0.600 – 300

0.80

5

80

80

230

5

Violet

WBC4-4L_

C

1

:4

0.250 – 800

1.0

9

60

36

120

30

Yellow

6

4

3

1

Pri

Sec

66

44

33

22

11

PriPri

Sec

Sec

6

5

4

3

2

1

Pri

Sec

A

B

1. When ordering, please specify

termination and packaging codes:

WBC4-4LC

Termination: L = RoHS compliant tin-silver-copper (95.5/4/0.5) over silver-

palladium-platinum

Special order:

S = non-RoHS tin-lead (63/37).

Packaging: C = 7

″ machine-ready reel. EIA-481 embossed plastic tape

(750 parts per full reel).

B = Less than full reel. In tape, but not machine ready. To have

a leader and trailer added ($25 charge), use code letter C

instead.

D = 13

″ machine-ready reel. EIA-481 embossed plastic tape.

Factory order only, not stocked (2500 parts per full reel).

2. Impedance ratio is for the full primary winding to the full secondary winding.

3. Inductance measured at 100 kHz, 0.1 V, 0 Adc on an Agilent/HP 4192 or

equivalent.

4. DCR measured on a micro-ohmmeter.

5. DC imbalance is the maximum difference in current measured at pins 1 and 3

with the source at pin 2. Inductance drop is 15% at maximum imbalance.

6. Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Schematics

Designer’s Kit C393 contains three of each part

Core material Ferrite

Terminations RoHS compliant tin-silver-copper over silver-plati-

num-glass frit. Other terminations available at additional cost.

Weight 68.0 – 88.8 mg

Ambient temperature –40°C to +85°C

Storage temperature Component: –40°C to +85°C.

Tape and reel packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

60 per billion hours / 16,666,667 hours, calculated per Telcordia SR-332

Packaging 750/7

″reel; 2500/13″ reel Plastic tape: 12 mm wide,

0.3 mm thick, 8 mm pocket spacing, 2.9 mm pocket depth

PCB washing Tested to MIL-STD-202 Method 215 plus an additional

aqueous wash. See Doc787_PCBt_Washing.pdf.

• Smallest wideband transformer: 4 mm square 3 mm high

• 300 Vrms interwinding isolation, 1/4 Watt RF input power

• 250 mA max current rating.

C

D