WB Surface Mount

Wideband RF Transformers

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Packaging

D = 13" machine-ready reel

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

Part number 1 (Hover for schematics)	L min per winding (µH) 2		DCR max (mΩ) 3		Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
Part number 1 (Hover for schematics)	Pri	Sec	Pri	Sec	Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
WB1.18-3SL_	90	108	300	330	1 : 1.18	250	0.5	0.04 — 300	500	A
WB1.5-6SL_	56	84	120	150	1 : 1.5	250	0.26	0.05 — 325	500	A
WB1-1SL_	27	27	75.0	75.0	1 : 1	250	0.7	0.15 — 500	500	A
WB16-1SL_	56	896	75.0	330	1 : 16	250	0.6	0.05 — 100	500	A
WB1-6SL_	25	25	100	100	1 : 1	250	0.5	0.1 — 350	500	A
WB2.5-6SL_	30	75	100	130	1 : 2.5	250	0.26	0.08 — 225	500	A
WB2-1-2WSL_	38	75	100	150	1 : 2	250	1	0.08 — 700	500	A
WB36-1SL_	25	900	50.0	180	1 : 36	250	0.5	0.1 — 45	500	A
WB4-6SL_	25	100	100	200	1 : 4	250	0.5	0.1 — 125	500	A
WB9-1SL_	25	225	100	250	1 : 9	250	0.57	0.125 — 125	500	A

Part number 1 (Hover for schematics)	L min per winding (µH) 2		DCR max (mΩ) 3		Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
Part number 1 (Hover for schematics)	Pri	Sec	Pri	Sec	Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
WB1-1TSL_	25	25	100	100	1 : 1	250	0.51	30.0	0.1 — 375	500	B
WB13-1TSL_	17	221	90.0	200	1 : 13	250	0.72	10.0	0.15 — 125	500	B
WB16-6TSL_	56	896	75.0	330	1 : 16	250	0.6	25.0	0.05 — 100	500	B
WB1-6TSL_	70	70	150	150	1 : 1	250	0.2	18.0	0.05 — 200	500	B
WB2.5-6TSL_	56	140	120	200	1 : 2.5	250	0.28	13.0	0.05 — 125	500	B
WB2-1TSL_	38	75	100	150	1 : 2	250	1	29.0	0.07 — 400	500	B
WB3-1TSL_	96	270	110	200	1 : 3	250	0.4	4.0	0.04 — 500	500	B
WB4-1HSL_	25	100	120	160	1 : 4	250	0.5	15.0	0.1 — 500	500	B
WB4-6TSL_	43	172	120	160	1 : 4	250	0.5	5.0	0.05 — 200	500	B
WB5-1TSL_	48	240	220	500	1 : 5	250	0.3	13.0	0.05 — 400	500	B
WB8-1TSL_	18	144	100	270	1 : 8	250	0.76	17.0	0.15 — 400	500	B

Part number 1 (Hover for schematics)	L min per winding (µH) 2		DCR max (mΩ) 3		Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
Part number 1 (Hover for schematics)	Pri	Sec	Pri	Sec	Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	DC imbalance 5	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
WBT1.5-1SL_	48	70	150	180	1 : 1.5	250	0.3	19.0	0.04 — 350	500	C
WBT16-1SL_	25	400	100	300	1 : 16	250	0.5	7.5	0.1 — 100	500	C
WBT1-6SL_	70	70	150	150	1 : 1	250	0.25	19.0	0.04 — 200	500	C
WBT2.5-6SL_	70	175	150	200	1 : 2.5	250	0.26	11.0	0.05 — 100	500	C
WBT25-1SL_	25	625	100	350	1 : 25	250	0.5	6.0	0.1 — 65	500	C
WBT4-1ASL_	96	384	110	220	1 : 4	250	0.4	3.5	0.04 — 350	500	C
WBT4-1SL_	45	135	120	160	1 : 4	250	0.26	13.0	0.04 — 150	500	C

Notes

When ordering, please specify a packaging code: e.g. WB25-1SLD
Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4192 or equivalent.
DCR measured on a micro-ohmmeter 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 difference in current measured at pins 1 and 3 with the source at pin 2. Inductance drop is 15% at maximum imbalance.

RoHS-compliant. 260°C compatible. Matte tin over nickel over phos bronze terminations.
COTS Plus tin-silver-copper and tin-lead terminations available.

D = 13″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
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 D.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

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

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