Document 924B-1

Flyback / Buck Transformer
HalogenFreefor TI UCC25230
Switching Converter

The MA5401-AE was developed for use with the Texas Instruments UCC25230 Switching Converter (12 – 100 V input,0.20 A output).
It is designed to meet UL60950 Functional Isolation forworking voltage up to 210 V peak.
With 1000 Vrms (1500 Vdc) hipot and a small package size,
this transformer is ideal for use in high density isolated circuit
applications.
It provides tight coupling (k > 0.99), high inductance andexcellent current handling in a rugged, low cost part.

AEC

Q200 +85°CSHS

D1+VINL1SLS

CIN+L2CoVPRIVOUTCPRI–Dot indicates pin 1
12

1

4

XXX X
Dash
number0.189 ±0.003*
4,80 ±0,076

23

Typical Flyback / Buck Converter

4L1

L2

1:1

3

Internalcode

0.189 ±0.003*
4,80 ±0,076

Recommended
Land Pattern
0.114 ±0.004*
2,90 ±0,100.138
3,500.090
2,30
45°
typ0.134 0.090
3,40 2,300.060
1,52
Dimensions are of the case not including* thetermination. For maximum overall

dimensions including the termination, add
0.005 in / 0,13 mm.
For optional tin-lead and tin-silver-copper
terminations, dimensions are for themounted part. Dimensions before mounting
can be an additional 0.005 inch / 0,13 mm).

–0.0300,750.197
5,00

0.060
1,50
0.134
3,40
0.197
5,00

Dimensions are inCore material Ferrite
Environmental RoHS compliant, halogen freeTerminations RoHS compliant silver-palladium-platinum-glass frit.
Other terminations available at additional cost.
Winding
Weight 210 – 225 mg
direction
Ambient temperature –40°C to +125°C (Ambient temperature+ self-heating must not exceed a part temperature of 125°C. Seenotes for calculating temperature rise due to self-heating.)
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation 1500 Vdc
Resistance to soldering heat Max three 40 second reflows at+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /85% relative humidity)
Packaging 750/7″ reel; 2500/13″ reel Plastic tape: 12 mm wide,
0.32 mm thick, 8 mm pocket spacing, 3.1 mm pocket depth
Recommended pick and place nozzle OD: 5 mm; ID: ≤ 2.5 mm
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
1L1inches
mm

24L23

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 924B-1

Revised 08/30/21© Coilcraft Inc. 2021
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 924B-2

MA5401-AE for TI UCC25230 Switching Converter				Part
Inductance2
DCR max3
number1±20% (µH)(Ohms)
MA5401-AE_	 220

Leakageinductance5
typ (µH)

6.5>0.990.541		    Isat (A)6		 Hipot7
10% drop 20% drop 30% drop(Vdc)
0.16

0.21

0.24

Temperature rise calculation based on current

MA5401-AEC
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (750 parts per full reel). Quantities less than full
reel available: in tape (not machine ready) or withleader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor multiple packaging codes. When ordering, simply
change the last letter of your part number from B to C.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (2500 parts perfull reel).
2. 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 areconnected in series, inductance is four times the value.
3. DCR is for each winding. When leads are connected in parallel, DCR ishalf the value. When leads are connected in series, DCR is twice the value.
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
are connected in parallel, SRF is the same value.
5. Leakage Inductance is for L1 and is measured with L2 shorted.
6. 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.
7. Hipot production tested 100% at 1800 Vdc for 2 seconds.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Winding power loss = (IL12 + IL22 ) × DCR in Watts (W)
157°C
Temperature rise = Winding power loss ×W1500

Equal current in each winding (0.15 A):
Winding power loss = (0.15 2 + 0.15 2) × 5.25 = 0.236 W
Temperature rise = 0.236 W × 157°C = 37°C
WUnequal current (IL1 = 0.21 A, IL2 = 0.06 A):
Winding power loss = (0.21 2 + 0.06 2) × 5.25 = 0.250 W
157°C = 39.3°C
Temperature rise = 0.250 W ×
W

Typical Current Derating
12011010090807060
50403025°C

Percent of rated current

AEC

Q200 +85°CCoupling
coefficienttyp

1. When ordering, please specify packaging code:

20100-40-20

020406080

100120 140

Ambient temperature (°C)

Typical L vs Current

Typical L vs Frequency
1000
800
700600Inductance (µH)

HalogenFree

5.25

SRF typ4(MHz)500400300

2001000.1110100Frequency (MHz)These
are preproduction
products for electrical evaluation only. Document 924B-2 Revised 08/30/21
USparts+1-847-639-6400
sales@coilcraft.com
Specification subject
to change without notice.
UK +44-1236-730595
sales@coilcraft-europe.com© Coilcraft Inc. 2021
This product may not be used in medical or highTaiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Please check web site for latest information.
Singapore + 65-6484 8412 sales@coilcraft.com.sg