Site Settings

Warehouses
Language settings
Currency settings
Resources
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

TTWB Series

Wideband RF Transformers

RoHS compliant
NOTE: We now offer an even more economical version of this series: PWB. It is electrically identical, requires slightly more board space and is lower in height. Existing customers will continue to be supported indefinitely.
  • Available in 1, 1.5, 2, 4 and 16 to 1 versions
  • Tapped or untapped configurations
  • Footprint comparable to Mini-Circuits TT Series
  • Low profile, flat top ceramic case for reliable pick and place mounting
  • 400 V isolation; 1/4 Watt input RF power rating
  • Typical applications are as impedance or isolation transformer
  • Can also be used for balanced to unbalanced (balun) conversion
  • RoHS compliant. 260°C compatible. Tin-silver-copper over silver-platinum-glass frit terminations
  • COTS Plus tin-silver-copper and tin-lead terminations available
Buy Now:
Count Unit price
1 $3.35
100 $2.85
250 $2.35
500 $1.97
1000 $1.64
2500 $1.48
5000 $1.34

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Specifications

Electrical specifications at 25°C.

Type A

Part number 1 L min per winding (µH) 2 DCR max (mΩ) Imp. ratio
pri:sec 3
Current
rating (mA)
Insertion
loss (db)
Bandwidth (MHz) Color dot
Pri Sec
TTWB-1.5-AL_ 110 80.0 110 1 : 1.5 250 0.35 0.03 300 Black Brown Green
TTWB1010L_ 780 320 320 1 : 1 250 0.2 0.0035 125 Black Black Black
TTWB1010-1L_ 95 200 200 1 : 1 250 0.2 0.03 250 Black Black Violet
TTWB1015L_ 51 130 145 1 : 1.5 250 0.4 0.07 225 Black Black Brown
TTWB1040L_ 25 115 160 1 : 4 250 0.4 0.15 400 Black Black Yellow
TTWB-16-AL_ 75 260 910 1 : 16 250 0.35 0.05 80 Black Orange Green
TTWB-1-AL_ 40 70.0 70.0 1 : 1 250 0.6 0.08 450 Black Black Green
TTWB-2-AL_ 75 88.0 120 1 : 2 250 0.25 0.05 200 Black Red Green
TTWB-4-AL_ 25 75.0 135 1 : 4 250 0.5 0.15 500 Black Yellow Green

Type B

Part number 1 L min per winding (µH) 2 DCR max (mΩ) Imp. ratio
pri:sec 3
Current
rating (mA)
Insertion
loss (db)
Bandwidth (MHz) Color dot
Pri Sec
TTWB-1.5-BL_ 140 100 120 1 : 1.5 250 0.4 0.5 250 Brown Brown Green
TTWB-16-BL_ 75 260 910 1 : 16 250 0.3 0.075 90 Brown Orange Green
TTWB-1-BL_ 22 70.0 70.0 1 : 1 250 0.4 0.13 425 Brown Black Green
TTWB2010L_ 780 320 320 1 : 1 250 0.2 0.0035 125 Brown Black Black
TTWB2010-1L_ 95 200 200 1 : 1 250 0.2 0.03 250 Brown Black Violet
TTWB2040L_ 25 115 160 1 : 4 250 0.4 0.15 400 Brown Black Yellow
TTWB-2-BL_ 75 88.0 130 1 : 2 250 0.35 0.2 400 Brown Red Green
TTWB-4-BL_ 25 75.0 135 1 : 4 250 0.5 0.14 700 Brown Yellow Green

Type C

Part number 1 L min per winding (µH) 2 DCR max (mΩ) Imp. ratio
pri:sec 3
Current
rating (mA)
Insertion
loss (db)
Bandwidth (MHz) Color dot
Pri Sec
TTWB-1.5-CL_ 140 110 120 1 : 1.5 250 0.3 0.15 200 Red Brown Green
TTWB-1-CL_ 22 70.0 70.0 1 : 1 250 0.6 0.1 300 Red Black Green
TTWB-2-CL_ 75 105 130 1 : 2 250 0.3 0.13 285 Red Red Green
TTWB3010L_ 780 320 320 1 : 1 250 0.2 0.0035 125 Red Black Black
TTWB3010-1L_ 95 200 200 1 : 1 250 0.2 0.03 250 Red Black Violet
TTWB3015L_ 51 130 145 1 : 1.5 250 0.4 0.07 225 Red Black Brown
TTWB3040L_ 25 115 160 1 : 4 250 0.4 0.15 400 Red Black Yellow
TTWB-4-CL_ 25 75.0 135 1 : 4 250 0.5 0.14 500 Red Yellow Green
Notes
  1. When ordering, please specify termination and packaging codes: e.g. TTWB-1.5-CLD
  2. Inductance tested at 130 kHz, 0.1 Vrms, 0 Adc.
  3. Impedance ratio is for the full primary winding to the full secondary winding.

Termination:

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

Packaging:

  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape (1000 parts per full reel).
  • B = Less than full reel
    In tape, not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C
Packaging: –40°C to +80°C

Performance curves

Frequency Response

Schematics

Type A
ttwbs_a.gif
Type B
ttwbs_b.gif
Type C
ttwbs_c.gif

Physical characteristics

ttwbd.gif

Part marking

ttwbcolr.gif
 
Part number Dot over pin 1   Dot over pin 6
TTWB-1-A Black Black Green
TTWB-1.5-A Black Brown Green
TTWB-2-A Black Red Green
TTWB-4-A Black Yellow Green
TTWB-16-A Black Orange Green
TTWB1010 Black Black Black
TTWB1010-1 Black Black Violet
TTWB1015 Black Black Brown
TTWB1040 Black Black Yellow
Part number Dot over pin 1   Dot over pin 6
TTWB-1-B Brown Black Green
TTWB-1.5-B Brown Brown Green
TTWB-2-B Brown Red Green
TTWB-4-B Brown Yellow Green
TTWB-16-B Brown Orange Green
TTWB2010 Brown Black Black
TTWB2010-1 Brown Black Violet
TTWB2040 Brown Black Yellow
Part number Dot over pin 1   Dot over pin 6
TTWB-1-C Red Black Green
TTWB-1.5-C Red Brown Green
TTWB-2-C Red Red Green
TTWB-4-C Red Yellow Green
TTWB3010 Red Black Black
TTWB3010-1 Red Black Violet
TTWB3015 Red Black Brown
TTWB3040 Red Black Yellow

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_b.gif
1000 330 100 13 22,4 16,4 16 12 4 2 4,83 0,34

General specification

Core Material:
Ferrite
Weight:
0.37 – 0.43 g
Packaging:
1000 per 13" reel; Plastic tape: 16 mm wide, 0.34 mm thick, 12 mm pocket spacing, 4.83 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

Related product series