Datasheet 3D Model

D1766-AL PoE Transformer

for Linear Technology LTC4267

Designed for use with Linear Technology LTC4267 PoE PD interface
Ideal for use in isolated converters and isolated power supplies

Buy Now:

Count	Unit price
1	$3.01
175	$2.68
700	$2.25
1400	$1.87
2800	$1.63
5000	$1.42

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Typical Application

Works with Analog Devices LTC4267

Input Voltage	Output 1			Power	Fsw
Input Voltage	Sec1	Sec2	Sec3	Power	Fsw
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

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 1.5 A (µH)	DCR max				Leakage Inductance max (µH) 4	Turns Ratio	Isolation Voltage (Vrms) 5
Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 1.5 A (µH)	Pri (Ω)	Sec1 (mΩ)	Sec2 (mΩ)	Sec3 (mΩ)	Leakage Inductance max (µH) 4	Pri : Sec1 : Sec2 : Sec3	Isolation Voltage (Vrms) 5
D1766-ALD	221	200	0.420	13.000	15.000	30.000	5.1	1 : 0.104 : 0.042 : 0.042	1500

Notes

All outputs are referenced to ground.
When ordering, please specify packaging code: e.g. D1766-ALD
Inductance is for the primary, measured at 200 kHz, 1.1 Vrms, 0 Adc.
Leakage inductance is for the primary and is measured with secondary windings shorted.
1500 Vrms primary to secondary isolation.

Termination:

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.

Packaging:

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.

Environmental

Environmental:

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):

See FIT/MTBF Calculations

Schematics

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

General specification

Core Material:

Ferrite

Weight:

12.7 g

Packaging:

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

Warehouses

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D1766-AL PoE Transformer

for Linear Technology LTC4267

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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Warning