3D Model Datasheet

B0863-B Transformer

for PoE Powered Devices

Developed for Maxim MAX5941B PoE Interface/PWM Controller
IEEE 802.3af compliant PoE forward converter applications
Low profile, surface mount transformer
275 kHz switching frequency at a 50% duty cycle

Buy Now:

Count	Unit price
1	$4.66
200	$3.99
600	$3.48
1000	$2.71
2000	$2.33
5000	$2.14

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

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Typical Application

Works with Maxim MAX5941B

Input Voltage	Output 1	Power	Fsw
28 V — 60 V	3.3 V , 4 A	13 W	10 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance min (µH) 3	DCR max (Ω) 4					Leakage Inductance max (µH) 5	Turns Ratio 6	Isolation Voltage (Vrms) 7
Part number 2 (Hover for schematics)	Inductance min (µH) 3	Pri	Sec	Drive	Bias	Reset	Leakage Inductance max (µH) 5	Pri : Sec : Drive : Bias : Reset	Isolation Voltage (Vrms) 7
B0863-BL_	165.0	0.061	0.008	0.020	1.290	1.100	0.75	1 : 0.24 : 0.24 : 1.3 : 1	1500

Notes

Output is with the the secondary windings connected in parallel.
When ordering, please specify packaging code: e.g. B0863-BLD
Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
DCR for the secondary is measured with the windings connected in parallel. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator
Leakage inductance is for the primary with all other windings shorted.
Turns ratio is with the secondary windings connected in parallel.
Isolation is measured from the primary, reset and bias windings to the secondary and drive windings.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver 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 (200 parts per full reel).
B = Less than full reel
In tape, but 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
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 the 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
200	330	100	13	50,4	44,4	44	28	4	2	9,6	0,35

General specification

Core Material:

Ferrite

Weight:

5.6 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

B0863-B Transformer

for PoE Powered Devices

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning