Wideband Transformers
Document 425-1
Document 425-1 Revised 11/10/11
Core material Ferrite
Terminations RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 0.38 – 0.40 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
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 (SM version): 500 per 13″ reel;
Plastic tape: 24 mm wide, 0.42 mm thick, 20 mm pocket spacing,
6.6 mm pocket depth; (TH version): 54 per tube
PCB washing Only pure water or alcohol recommended
• Surfacemountandthroughholeversions
• 500Vinterwindingisolation,1/4WattRFinputpower
• 250mAmaxcurrentrating.
• Forasmallerpackagesize,seeourWBCSeries
Dimensions – surface mount parts Dimensions – through hole parts
Dot indicates
pin 1
0.225
5,72
0.100
2,54
0.100
2,54
0.100
2,54
0.30
7,6
max
0.025
0,64 dia typ
1
2
3
6
5
4
typ
Recommended
BoardLayout
0.300 ±0.010
7,62 ±0,25
90 -105
°°
0.120
3,05 min
Dot indicates
pin 1
0.325
8,26 max
0.325
8,26 max
0.285
7,24 max
0.285
7,24 max
0.100
2,54 0.025
0,64
0.225
5,72
0.03
0,76
0.06
1,52
0.520
13,2
0.40
10,2
0.10
2,5
0.10
2,5
typ
max
max
Recommended
Land Pattern
0.520 ±0.010
13,21 ±0,25
0.400
10,16 typ
0.004 /0,10
0.010 × 0.020
0,25 × 0,51 typ
1
2
3
6
5
4
Dimensions are in inches
mm Dimensions are in inches
mm
Wideband Transformers
Document 425-2 Revised 11/10/11
Document 425-2
6
4
3
1
6
5
43
2
1
6
4
3
2
1
Impedance Insertion Pins 4
–
6 Pins 1
–
3
DC
Part number ratio2 Bandwidth loss max L min3 DCR max4 L min3 DCR max4
imbalance5
Schematic SM1 TH pri : sec (MHz) (dB) (µH) (mOhm) (µH) (mOhm) max (mA)
WB1-1SL_ WB1-1L 1 : 1 0.150 – 500 0.70 27 75 27 75 —
WB1-6SL_ WB1-6L 1: 1 0.100 – 350 0.50 25 100 25 100 —
WB1.18-3SL_ WB1.18-3L 1 : 1.18 0.040 – 300 0.50 90 300 108 330 —
WB1.5-6SL_ WB1.5-6L 1 : 1.5 0.050 – 325 0.26 56 120 84 150 —
WB2-1-2WSL_ WB2-1-2WL 1 : 2 0.080 – 700 1.00 38 100 75 150 —
WB2.5-6SL_ WB2.5-6L 1 : 2.5 0.080 – 225 0.26 30 100 75 130 —
WB4-6SL_ WB4-6L 1 : 4 0.100 – 125 0.50 25 100 100 200 —
WB9-1SL_ WB9-1L 1 : 9 0.125 – 125 0.57 25 100 225 250 —
WB16-1SL_ WB16-1L 1: 16 0.050 – 100 0.60 56 75 896 330 —
WB36-1SL_ WB36-1L 1: 36 0.100 – 45 0.50 25 50 900 180 —
WB1-1TSL_ WB1-1TL 1 : 1 0.100 – 375 0.51 25 100 25 100 30
WB1-6TSL_ WB1-6TL 1 : 1 0.050 – 200 0.20 70 150 70 150 18
WB2-1TSL_ WB2-1TL 1 : 2 0.070 – 400 1.00 38 100 75 150 29
WB2.5-6TSL_ WB2.5-6TL 1: 2.5 0.050 – 125 0.28 56 120 140 200 13
WB3-1TSL_ WB3-1TL 1: 3 0.040 – 500 0.40 96 110 270 200 4.0
WB4-1HSL_ WB4-1HL 1 : 4 0.100 – 500 0.50 25 120 100 160 15
WB4-6TSL_ WB4-6TL 1 : 4 0.050 – 200 0.50 43 120 172 160 5.0
WB5-1TSL_ WB5-1TL 1 : 5 0.050 – 400 0.30 48 220 240 500 13
WB8-1TSL_ WB8-1TL 1: 8 0.150 – 400 0.76 18 100 144 270 17
WB13-1TSL_ WB13-1TL 1: 13 0.150 – 125 0.72 17 90 221 200 10
WB16-6TSL_ WB16-6TL 1: 16 0.050 – 100 0.60 56 75 896 330 25
WBT1-6SL_ WBT1-6L 1 : 1 0.040 – 200 0.25 70 150 70 150 19
WBT1.5-1SL_ WBT1.5-1L 1 : 1.5 0.040 – 350 0.30 60 150 90 180 19
WBT2.5-6SL_ WBT2.5-6L 1 : 2.5 0.050 – 100 0.26 70 150 175 200 11
WBT4-1SL_ WBT4-1L 1 : 3 0.040 – 150 0.26 45 120 135 160 13
WBT4-1ASL_ WBT4-1AL 1 : 4 0.040 – 350 0.40 96 110 384 220 3.5
WBT16-1SL_ WBT16-1L 1 : 16 0.100 – 100 0.50 25 100 400 300 7.5
WBT25-1SL_ WBT25-1L 1: 25 0.100 – 65 0.50 25 100 625 350 6.0
1. Whenordering,pleasespecifypackaging code:
WB25-1SLD
Packaging: D = 13″ machine-ready reel. EIA-481embossedplastictape(500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 D instead.
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 max imbalance.
6. Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Document 425-3
Document 425-3 Revised 11/10/11
Transformers with no center taps
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB1-6
3 dB bandwidth: 0.100 – 350 MHz
0
1
2
3
4
5
10.10.01 10 100 100
0
Attenuation (dB)
Frequency (MHz)
WB1.5-6
3 dB bandwidth: 0.050 – 325 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB2.5-6
3 dB bandwidth: 0.080 – 225 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB4-6
3 dB bandwidth: 0.100 – 125 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB9-1
3 dB bandwidth: 0.125 – 125 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB36-1
3 dB bandwidth: 0.100 – 45 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB1.18-3
3 dB bandwidth: 0.040 – 300 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB2-1-2W
3 dB bandwidth: 0.080 – 700 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB1-1
3 dB bandwidth: 0.150 – 500 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB16-1
3 dB bandwidth: 0.050 – 100 MHz
Attenuationmeasuredonanetworkanalyzer(re:50Ohms)
Document 425-4
Document 425-4 Revised 11/10/11
Transformers with secondary center tap
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB1-1T
3 dB bandwidth: 0.100 – 375 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB2-1T
3 dB bandwidth: 0.070 – 400 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB1-6T
3 dB bandwidth: 0.050 – 200 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB2.5-6T
3 dB bandwidth: 0.050 – 125 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB4-1H
3 dB bandwidth: 0.100 – 500 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB4-6T
3 dB bandwidth: 0.050 – 200 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB13-1T
3 dB bandwidth: 0.150 – 125 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB3-1T
3 dB bandwidth: 0.040 – 500 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB5-1T
3 dB bandwidth: 0.050 – 400 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB8-1T
3 dB bandwidth: 0.150 – 400 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB16-6T
3 dB bandwidth: 0.050 – 100 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WB16-6T
3 dB bandwidth: 0.050 – 100 MHz
Attenuationmeasuredonanetworkanalyzer(re:50Ohms)
Document 425-5
Document 425-5 Revised 11/10/11
Transformers with primary and secondary center taps
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT2.5-6
3 dB bandwidth: 0.050 – 100 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT4-1
3 dB bandwidth: 0.050 – 150 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT16-1
3 dB bandwidth: 0.100 – 100 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT25-1
3 dB bandwidth: 0.100 – 65 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT1-6
3 dB bandwidth: 0.040 – 200 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT1.5-1
3 dB bandwidth: 0.040 – 350 MHz
0
1
2
3
4
5
10.10.01 10 100 1000
Attenuation (dB)
Frequency (MHz)
WBT4-1A
3 dB bandwidth: 0.040 – 350 MHz
Attenuationmeasuredonanetworkanalyzer(re:50Ohms)