1812WBT_16 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Surface Mount Wideband RF Transformers

Document 117-1
Surface Mount Wideband RF Transformers
• Provides wide band pass performance in a small SMT package.
• 1812 size ferrite body with a ceramic base.
• 50 V isolation, 1/4 Watt RF input power
Core material Ferrite
Terminations  RoHS compliant gold over nickel over moly-manganese.
Other terminations available at additional cost.
Weight  131 – 152 mg
Ambient temperature  –40°C to +85°C with Irms current
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)
One per billion hours / one billion hours, calculated per Telcordia SR-332
Packaging  600/7″ reel; 2200/13″ reel  Plastic tape:  12 mm wide,
0.3 mm thick, 8 mm pocket spacing, 3.7 mm pocket depth
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCBt_Washing.pdf.
1:1 Transformers
Part
  _Inductance2 _{Test frequency Imp. ratio}
  _number1
(µH)
(MHz)
pri : sec
1812WBT-1L_
14
10
1:1
1812WBT-2L_
5.3
10
1:1
1812WBT-3L_
1.25
50
1:1
1812WBT-4L_
0.220
50
1:1
1812WBT-5L_
0.090
50
1:1
DCR max
(Ohms)
4.8
1.8
0.7
0.3
0.15
I_DC
(mA)
200
400
500
700
700
Isolation
(Vrms)
50
50
50
50
50
Insertion
loss (dB)
<1
<1
<1
<1
<1.5
Bandwidth Color
(MHz)
dot
0.340–22
0.800–60
4–200
11–480
48–645
Yellow
Green
White
Orange
Red
1.5:1 Transformers
Part
 number1
  Inductance (µH)² _{Test freq. Imp. ratio}
pri   sec
(MHz) pri : sec
1812WBT1.5-1L_ 5.0
3.3
10
1812WBT1.5-2L_ 2.5
1.6
10
1812WBT1.5-3L_ 1.0
0.60
10
1812WBT1.5-4L_ 0.144 0.090
10
1.5 : 1
1.5 : 1
1.5 : 1
1.5 : 1
DCR max ()
pri  sec
1.05 0.87
0.74 0.58
0.43 0.34
0.18 0.14
I_DC
(mA)
400
500
500
700
Isolation Insertion Bandwidth Color
(Vrms) loss (dB) (MHz)
dot
50
<0.5
1.3–100 Red
50
<0.5
2.75–135 Orange
50
<0.75 7.2–200 Yellow
50
<2.25
38–535 Green
2:1 Transformers
Part
  _number1
  _{Inductance (µH)}2 _{Test freq. Imp. ratio}
pri   sec
(MHz) pri : sec
1812WBT2-1L_ 13.80 6.90
10
2:1
1812WBT2-2L_
5.850 2.925
10
2:1
1812WBT2-3L_
2.60 1.30
10
2:1
1812WBT2-4L_
0.910 0.455
50
2:1
DCR max ()
pri  sec
4.6 3.2
1.25 0.95
0.52 0.42
0.27 0.23
I_DC
(mA)
200
400
600
700
Isolation Insertion Bandwidth Color
(Vrms) loss (dB) (MHz) dot
50
<1.5
0.800–23 Brown
50
<1.5
2.2–65 Red
50
<1.5
4–105 Orange
50
<1.5
11–200 Yellow
1. When ordering, please specify termination and packaging codes:
1812WBT1.5-4LC
Termination: L = RoHS compliant gold over nickel over moly-manganese
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 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 (2200 parts per full reel).
2. Inductance is per winding
3. Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
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UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 117E-1  Revised 03/23/06
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.