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-platinum-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 min3 DCR max4 L min3 DCR max4 imbalance5Color 1 number 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 1. When ordering, please specify termination and packaging codes: WBC4-4LC Termination:L=RoHS compliant tin-silver-copper (95.5/4/0.5) over silverpalladium-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 A 6 Pri B 3 6 1 4 D 2 Sec 3 6 Pri 5 Sec 4 Pri C 1 1 2 Sec 4 3 6 1 Pri 2 Sec 4 3 Document 424-1 Revised 07/01/15 Document 424-2 WBC Series SMT Mini Wideband Transformers Dimensions Dot indicates pin 1 0.175 max 4,45 0.165 max 4,19 0.120 max 3,05 0.150* 3,81 6 5 0.040 1,02 1 2 0.060 1,52 0.060 1,52 0.030 0,76 4 1 0.150* 3,81 6 * Nominal dimensions of the substrate Dimensions are in 3 Recommended Land Pattern 0.120 3,05 3 2 5 4 0.045 1,14 0.030 0,76 inches mm Document 424-2 Revised 07/01/15 Document 424-3 WBC Series SMT Mini Wideband Transformers 5 4 3 1 2 4 3 dB bandwidth: 0.400 – 600 MHz 0.01 1 1000 10000 5 4 3 1 2 4 3 dB bandwidth: 0.250 – 750 MHz 1 10 100 1000 5 4 3 1 dB 2 4 3 dB bandwidth: 0.200 – 500 MHz 5 0.01 0 0.1 1 10 100 1000 0.01 5 4 3 1 dB 2 4 3 dB bandwidth: 0.300 – 900 MHz 0.01 0.1 1 10 100 1000 Frequency (MHz) 10000 15 12 9 6 3 0 -3 -6 -9 -12 -15 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC2-1TL Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC3-1TL 2 1 0 -1 -2 -3 3 5 0.1 Frequency (MHz) WBC3-1TL 10000 2 1 0 -4 -5 10000 1000 Phase imbalance Magnitude imbalance -1 -2 -3 3 100 WBC1-1TL Frequency (MHz) WBC2-1TL 10 Frequency (MHz) 2 1 0 -4 -5 10000 1 Degrees 0.1 0.1 Degrees 0 0.01 -1 -2 -3 3 0.01 Attenuation (dB) 100 WBC1-1TL 5 Attenuation (dB) 10 Phase imbalance Magnitude imbalance Frequency (MHz) dB Attenuation (dB) 0.1 -4 -5 Degrees 5 0 2 1 0 -1 -2 -3 3 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC1-1L Degrees WBC1-1L dB Attenuation (dB) 0 -4 -5 Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) Attenuation measured on a network analyzer (re: 50 Ohms) Document 424-3 Revised 07/01/15 Document 424-4 WBC Series SMT Mini Wideband Transformers 2 4 3 dB bandwidth: 0.250 – 750 MHz 0.1 1 1000 10000 5 4 3 1 dB 2 4 3 dB bandwidth: 1.50 – 1200 MHz 1 10 100 1000 5 4 3 1 dB 2 4 3 dB bandwidth: 0.500 – 1000 MHz 5 0.01 0 0.1 1 10 100 1000 0.01 5 4 3 1 dB 2 4 3 dB bandwidth: 0.300 – 700 MHz 0.01 0.1 1 10 100 1000 Frequency (MHz) 10000 15 12 9 6 3 0 -3 -6 -9 -12 -15 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC4-1WL Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC4-6TL 2 1 0 -1 -2 -3 3 5 0.1 Frequency (MHz) WBC4-6TL 10000 2 1 0 -4 -5 10000 1000 Phase imbalance Magnitude imbalance -1 -2 -3 3 100 WBC4-14L Frequency (MHz) WBC4-1WL 10 Frequency (MHz) 2 1 0 -4 -5 10000 1 Degrees 0.1 0.1 Degrees 0 0.01 -1 -2 -3 3 0.01 Attenuation (dB) 100 Phase imbalance Magnitude imbalance Frequency (MHz) WBC4-14L 5 Attenuation (dB) 10 -4 -5 Degrees 0.01 0 2 1 0 -1 -2 -3 3 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC4-1TL Degrees 1 5 Attenuation (dB) 5 4 3 WBC4-1TL dB Attenuation (dB) 0 -4 -5 Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) Attenuation measured on a network analyzer (re: 50 Ohms) Document 424-4 Revised 07/01/15 Document 424-5 WBC Series SMT Mini Wideband Transformers 1 4 3 dB bandwidth: 0.150 – 600 MHz 10 100 1000 10000 4 3 dB bandwidth: 0.300 – 500 MHz 1 10 100 1000 -4 -5 10000 0.01 5 4 3 WBC16-1TL 1 dB 2 3 dB bandwidth: 0.600 – 300 MHz 0.01 0.1 1 10 100 1000 5 4 3 1 dB 2 4 3 dB bandwidth: 0.250 – 800 MHz 0.01 0.1 1 10 100 1000 Frequency (MHz) 10000 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC4-4L 2 1 0 -1 -2 -3 3 5 0.1 Frequency (MHz) WBC4-4L 15 12 9 6 3 0 -3 -6 -9 -12 -15 2 1 0 -4 -5 10000 10000 Degrees 5 1000 WBC16-1TL -1 -2 -3 4 100 Phase imbalance Magnitude imbalance Frequency (MHz) 3 10 Frequency (MHz) Degrees 0.1 1 WBC9-1L -1 -2 -3 3 0.01 0.1 2 1 0 2 0 0.01 5 4 3 1 0 Phase imbalance Magnitude imbalance Frequency (MHz) WBC9-1L 5 Attenuation (dB) 1 dB Attenuation (dB) 0.1 -4 -5 Degrees 0.01 0 Degrees -1 -2 -3 3 15 12 9 6 3 0 -3 -6 -9 -12 -15 WBC8-1L 2 1 0 2 5 Attenuation (dB) 5 4 3 WBC8-1L dB Attenuation (dB) 0 -4 -5 Phase imbalance Magnitude imbalance 0.01 0.1 1 10 100 1000 10000 Frequency (MHz) Attenuation measured on a network analyzer (re: 50 Ohms) Document 424-5 Revised 07/01/15