WBC1-1LC_15 Datasheet, PDF (1/5 Pages) Coilcraft lnc. – Mini Wideband Transformers

Document 424 -1
Mini Wideband Transformers – WBC
• Smallest wideband transformer: 4 mm square 3 mm high
• 300 Vrms interwinding isolation, 1/4 Watt RF input power
• 250 mA max current rating.
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.

Impedance
Insertion     ^{Pins 4 – 6 (primary)     Pins 1 – 3 (secondary)}
DC
Part
  _ratio2 _{Bandwidth loss max}   _{L min}3   _{DCR max}4   _{L min}3   _{DCR max}4   _imbalance5
number¹ Schematic pri : sec
(MHz)
(dB)
(µH) (mOhm) (µH) (mOhm) max (mA)
WBC1-1L_
A
1 : 1
0.400 – 600 0.40
10
120
10
120
—
WBC1-1TL_ B
1 : 1
0.250 – 750 0.58
9.5
75
9.5
75
36
WBC2-1TL_ B
1 : 2
0.200 – 500 0.50
10
120
20
150
8.5
WBC3-1TL_ B
1 : 3
0.300 – 900 0.60
9
100
27
150
8.5
WBC4-1TL_ B
1 : 4
0.250 – 750 1.0
9
55
36
120
30
WBC4-14L_ B
1 : 4
1.500 – 1200 2.0
2
50
8
100
15
WBC4-1WL_ B
1 : 4
0.500 – 1000 0.90
5
80
20
120
10
WBC4-6TL_ B
1 : 4
0.300 – 700 0.65
9
80
36
200
7.5
WBC8-1L_
D
1 : 8
0.150 – 600 0.60
22
120
176
310
17
WBC9-1L_
B
1 : 9
0.300 – 500 0.54
9
80
81
230
5
WBC16-1TL_ B
1 : 16 0.600 – 300 0.80
5
80
80
230
5
WBC4-4L_
C
1 : 4
0.250 – 800 1.0
9
60
36
120
30
Color
dot
Brown
Brown
Red
Orange
Yellow
Green
White
Blue
Gray
White
Violet
Yellow
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
A⁶
Pri
4
B⁶
Pri
4
1
Sec
3
1
2 Sec
3
C⁶
Pri 5
4
D⁶
Pri
4
1
2 Sec
3
1
2 Sec
3
Document 424-1  Revised 07/01/15