3D Model Datasheet

C1048 PoE Transformer

for Linear LT1725 Flyback Controller

Developed for Linear LT1725 Isolated Flyback Controller
Can be used in isolated and non-isolated designs and in PoE applications
Interleaved secondary windings
RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations.

Buy Now:

Count	Unit price
1	$5.35
200	$4.30
600	$2.58
1200	$2.02
2400	$1.72
5000	$1.58

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 Texas Instruments LM5071/LM5072

Input Voltage	Output 1		Power	Fsw
Input Voltage	Sec	Bias	Power	Fsw
36 V — 72 V	5 V , 2 A	15 V , 0.2 A	13 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 1.2 A (µH)	DCR max (Ω) 4			Leakage Inductance max (µH) 5	Turns Ratio 6	Isolation Voltage (Vrms) 7
Part number 2 (Hover for schematics)	Inductance at 0A (µH) 3 (Tolerance: ±10%)	Inductance min at 1.2 A (µH)	Pri	Sec	Bias	Leakage Inductance max (µH) 5	Pri : Sec : Bias	Isolation Voltage (Vrms) 7
C1048-AL_	94	85	0.210	0.010	0.453	3.9	1 : 0.12 : 0.47	1500

Notes

Output is with the secondary windings connected in parallel. Output of the bias winding with a 15 V, 0.2 A
When ordering, please specify packaging code: e.g. C1048-ALD
Inductance is for the primary, measured at 250 kHz, 0.3 Vrms, 0 Adc.
DCR is for both windings of the secondary connected in parallel.
Leakage inductance is for the primary winding with the secondary windings shorted.
Turns ratio is with the secondary windings connected in parallel
1500 Vrms, one minute primary to secondary isolation.

Termination:

RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze. Other terminations available at additional cost.

Packaging:

D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 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

Secondary windings to be connected
in parallel on PC board

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:

5.1 g

Packaging:

200 per 13″ reel Plastic tape: 44 mm wide, 0.35 mm thick, 28 mm pocket spacing, 9.6 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

Language settings

Currency settings

C1048 PoE Transformer

for Linear LT1725 Flyback Controller

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Related product series

A9967-AL Surface Mount

AA1030-AL

C1023 PoE Transformer

C1099 Flyback Transformer

C1154 Flyback Transformer

C1173 Flyback Transformer

C1453 Flyback Transformer

SMT PoE Transformers

7 Watt PoE Transformers

3 Watt PoE Transformers

D1766-AL PoE Transformer

DA2062-AL PoE Transformer

DA2257-AL PoE Transformer

DA2362-AL PoE Transformer

Flyback Transformer

DA2420-AL and DA2421-AL PoE Transformers

ETH1-230 High Power

ETH1-460 PoE

FA2519-AL PoE Transformer

Midspan PoE Plus Magnetics

FA2636 Flyback Transformer

FA267x and FA2732 PoE Transformers

Flyback Transformers

FA2706 Flyback Transformer

SMT Flyback Transformers

GA3271-AL Flyback Transformer

GA3429-BL Flyback Transformer

GA3568, HA3809 Flyback Transformers

Flyback Transformer

Flyback Transformers

HA380x Flyback Transformer

HA3905 Flyback Transformer

High Power PoE Plus

JA4456-DL Flyback Transformers

PA6582-AL Flyback Transformer

120 W PoE SMT Planar Transformers

POE300 Flyback Transformers

POE600F 60 W PoE Transformers

Miniature Flyback Transformers

Flyback Transformers

High Power Flyback Transformers

POExxP Flyback Transformers

Flyback & Forward Transformers

POExxQ High Power Flyback Transformers

High Power Transformers

WA8704-ALD

ZA9609-AE Active Clamp Forward Topology

Warning