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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors


TTWB1010-1LB, TTWB1010-1LD

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.

For more information and specification about the part.

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Count Unit price
1 $2.89
100 $2.48
250 $2.16
500 $1.88
1000 $1.63
2500 $1.40
5000 $1.29

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

. in stock, ready to ship today.
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Electrical specifications at 25°C.

Type A

Part number 1
(Hover for schematics)
L min per winding (µH) 2 DCR max (mΩ) Imp. ratio
pri:sec 3
rating (mA)
loss (db)
Bandwidth (MHz) Isolation
Voltage (Vrms)
Color dot
Pri Sec
TTWB1010-1L_ 95 200 200 1 : 1 250 0.2 0.03 250 400 Black Black Violet
  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.


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


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

Performance curves

Frequency Response


Type A
Type B
Type C

Physical characteristics


Part marking

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


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


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

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