MA5401-AE

Flyback/Buck Transformer

Designed for use with the Texas Instruments UCC25230 Switching Converter (12 – 100 V input, 0.20 A output).
Designed to meet UL60950 Functional Isolation for working voltage up to 210 V peak.
1000 Vrms (1500 Vdc) isolation
Tight coupling (k > 0.99), high inductance and excellent current handling
RoHS-compliant, halogen free. 260°C compatible

Buy Now:

Count	Unit price
1	$2.02
375	$1.58
750	$0.96
1500	$0.75
3000	$0.65
6000	$0.59

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

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	Isolation Voltage (V) 4	Leakage Inductance (µH) 6	Turns Ratio
Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	Isolation Voltage (V) 4	Leakage Inductance (µH) 6	Turns Ratio
MA5401-AE_	220	5.3	1500	0.54	1 : 1

For SEPIC Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 5	Coupling coefficient	Leakage Inductance (µH) 6	Isat (A) 7
Part number 1 (Hover for schematics)	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 5	Coupling coefficient	Leakage Inductance (µH) 6	10% drop	20% drop	30% drop
MA5401-AE_	220	5.3	6.5	>0.99	0.54	0.16	0.21	0.24

Notes

When ordering, please specify packaging code: MA5401-AEC
Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value.
DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
Hipot production tested 100% at 1800 Vdc for 2 seconds.
SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
Leakage Inductance is for L1 and is measured with L2 shorted.
DC current, at which the inductance drops the specified amount from its value without current. It is the sum of the current flowing in both windings.

Temperature rise calculation based on specified Irms:
Winding power loss = (IL12 + IL22) × DCR
Temperature rise = Power loss (Watts) × (157°C per W)

Examples:

Equal current in each winding (0.15 A):
Winding power loss = (0.152 + 0.152) × 5.25 = 0.236 W
Temperature rise = 0.236 W × (157°C / W) = 37.0°C

Unequal current (IL1 = 0.21 A, IL2 = 0.06 A):
Winding power loss = (0.212 + 0.062) × 5.25 = 0.250 W
Temperature rise = 0.250 W × (157°C / W) = 39.3°C

Termination:

Silver-palladium-platinum-glass frit terminations.

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (750 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.
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2500 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C (Ambient temperature + self-heating must not exceed a part temperature of 125°C. See notes for calculating temperature rise due to self-heating.)

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