3D Model Datasheet

HA3950-AL Flyback Transformer

for 300 W Power Supply with PFC

Specified by Texas Instruments in Reference Design SLUU341.
Flyback transformer for 5 W bias supply: HA3950-AL, listed as T201

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Count	Unit price
1	$4.61
200	$3.95
600	$3.44
1200	$2.68
2400	$2.29
5000	$2.10

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Typical Application

Works with Texas Instruments SLUU341

Input Voltage	Output 1		Power	Fsw
Input Voltage	Sec	P1	Power	Fsw
100 V — 450 V	15 V , 0.33 A	10 V , 0.02 A	5 W	100 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (mH) 2 (Tolerance: ±10%)	Inductance min at 0.3 A (mH)	DCR max (Ω)			Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (mH) 2 (Tolerance: ±10%)	Inductance min at 0.3 A (mH)	Pri	Sec	P1	Leakage Inductance max (µH) 3	Pri : Sec : P1	Isolation Voltage (Vrms) 4
HA3950-AL	2.30	1.61	0.860	0.109	0.080	16.5	1 : 0.16 : 0.11	3000

Notes

Output of the P1 winding is 10 V, 20 mA.
Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/HP 4263B impedance analyzer or equivalent.
Leakage inductance is for the primary and is measured with the secondary shorted.
3000 Vrms, one minute primary to secondary
500 Vrms, one minute windings to core

Termination:

RoHS-compliant. Tin-silver over tin over copper terminations. Other terminations available at additional cost.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

−40°C to +85°C

Storage temperature range:

Component:−40°C to +85°C
Packaging trays:−40°C to +80°C

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

See FIT/MTBF Calculations

Schematics

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

13.5 g

Packaging:

100 per tray

Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

PCB Washing:

Tested with pure water or alcohol only. More info.

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