WBC Series

SMT Mini Wideband Transformers

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Packaging

C = 7" machine-ready reel

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Designer's Kit:

Kit	Values	Price
C393	12 (3 of each)	$45.00

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

Part number 1 (Hover for schematics)	L min per winding (µH) 2		Test frequency (kHz)	DCR max (mΩ) 3		Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic	Color dot
Part number 1 (Hover for schematics)	Pri	Sec	Test frequency (kHz)	Pri	Sec	Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic	Color dot
WBC1-1L_	10	10	100	120	120	1 : 1	250	0.4	-	0.4 — 600	300	A	Brown
WBC1-1TL_	9.5	9.5	100	75.0	75.0	1 : 1	250	0.58	36.0	0.25 — 750	300	B	Brown
WBC16-1TL_	5.0	80	100	80.0	230	1 : 16	250	0.8	5.0	0.6 — 300	300	B	Violet
WBC2-1TL_	10	20	100	120	150	1 : 2	250	0.5	8.5	0.2 — 500	300	B	Red
WBC3-1TL_	9.0	27	100	100	150	1 : 3	250	0.6	8.5	0.3 — 900	300	B	Orange
WBC4-14L_	2.0	8.0	100	50.0	100	1 : 4	250	2	15.0	1.5 — 1200	300	B	Green
WBC4-1TL_	9.0	36	100	55.0	120	1 : 4	250	1	30.0	0.25 — 750	300	B	Yellow
WBC4-1WL_	5.0	20	100	80.0	120	1 : 4	250	0.9	10.0	0.5 — 1000	300	B	White
WBC4-4L_	9.0	36	100	60.0	120	1 : 4	250	1	30.0	0.25 — 800	300	C	Yellow
WBC4-6TL_	9.0	36	100	80.0	200	1 : 4	250	0.65	7.5	0.3 — 700	300	B	Blue
WBC8-1L_	22	176	100	120	310	1 : 8	250	0.6	17.0	0.15 — 600	300	D	Gray
WBC9-1L_	9.0	81	100	80.0	230	1 : 9	250	0.54	5.0	0.3 — 500	300	B	White

Notes

When ordering, please specify termination and packaging codes: e.g. WBC16-1TLC
Inductance measured at 100 kHz, 0.1 V, 0 Adc on an Agilent/ HP 4192 or equivalent.
DCR measured at 25°C on a micro-ohmmeter. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Impedance ratio is for the full primary winding to the full secondary winding.
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.

L = RoHS compliant tin-silver-copper (95.5/4/0.5) over silver-platinum-glass frit.
S = non-RoHS tin-lead (63/37). (Special order, added cost)

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (750 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2500 parts per full reel).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +85°C
Tape and reel packaging: –40°C to +80°C

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