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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



RoHS compliant

For more information and specification about the part.

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Count Unit price
1 $2.86
175 $2.55
700 $2.14
1400 $1.78
2800 $1.55
5000 $1.35

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

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Typical Application

Works with Analog Devices LTC4267

Input Voltage Output 1 Power Fsw
Sec1 Sec2 Sec3
36 V 72 V 1.8 V , 2.5 A 2.5 V , 1.5 A 3.3 V , 0.5 A 10 W 200 kHz


Electrical specifications at 25°C.

Part number 2
(Hover for schematics)
at 0A (µH) 3
(Tolerance: ±10%)
min at   1.5 A (µH)
DCR max (Ω) Leakage
max (µH) 4
Turns Ratio Isolation
Voltage (Vrms) 5
Pri Sec1 Sec2 Sec3 Pri : Sec1 : Sec2 : Sec3
D1766-AL_ 221 200 0.420 0.013 0.015 0.030 5.1 1 : 0.104 : 0.042 : 0.042 1500
  1. All outputs are referenced to ground.
  2. When ordering, please specify packaging code: e.g. D1766-ALD
  3. Inductance is for the primary, measured at 200 kHz, 1.1 Vrms, 0 Adc.
  4. Leakage inductance is for the primary and is measured with secondary windings shorted.
  5. 1500 Vrms primary to secondary isolation.


  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 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.
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



The three secondary windings are to be connected in series on the board by connecting pins 9, 8 and 7 together and pins11 and 10 together. Outputs at pins 12, 11,10 and 8,7 are referenced to ground (pins 5,6).

Physical characteristics



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 d1766orientation.gif
175 330 100 13 50,4 44,4 44 32 4 2 11,9 0,4

General specification

Core Material:
12.7 g
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 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 with pure water or alcohol only. More Info.

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