Datasheet KA5038-BL

KA5038-BL Flyback Transformer

for ON Semi NCP1236

Developed for ON Semiconductor NCP1236 Fixed Frequency PWM Controller
and NCP4305FBDAP 65W Off-Line AC/DC Adapter
Universal input; 66 Watt output
Copper shield minimizes EMI radiation

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Count	Unit price
1	$16.87
120	$14.45
240	$12.57
500	$10.93
1000	$8.51
2500	$7.29
5000	$6.68

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Typical Application

Works with ON Semiconductor NCP1236

AC Input Voltage	Output 1		Power	Fsw
AC Input Voltage	Sec	Aux	Power	Fsw
85 V — 265 V	19 V , 3.5 A	15.5 V , 0.02 A	66 W	50 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 2.8 A (µH)	DCR max (Ω) 3			Leakage Inductance max (µH) 4	Turns Ratio 5	Isolation Voltage (Vrms) 6
Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 2.8 A (µH)	Pri	Sec	Aux	Leakage Inductance max (µH) 4	Pri : Sec : Aux	Isolation Voltage (Vrms) 6
KA5038-BL	560	480	0.198	0.007	0.236	5.6	1 : 0.188 : 0.156	3000

Notes

Output is for the secondary. Aux winding output is 15.5 V, 20 mA.
Inductance measured at 50 kHz, 0.1 Vrms, 0 Adc
DCR is with the primary windings connected in series and the secondary windings connected in parallel.
Leakage inductance is for both windings of the primary and is measured with the secondary windings shorted.
Turns ratios are with the primary windings connected in series and the secondary windings connected in parallel.
One minute primary to secondary.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver over tin over copper over steel. Other terminations available at additional cost.

Packaging:

36 per tray

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: −40°C to +125°C
Packaging tray: −40°C to +80°C

Maximum part temperature:

+125°C (Ambient + temperature rise)

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

See FIT/MTBF Calculations

Schematics

Primary windings to be connected
in series and secondary windings
to be connected in parallel on PC board.

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

60.2 g

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