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Document 1489-1

Flyback & Forward Transformers for PoE
HalogenFree• Flyback and Forward transformers for PoE up to 72 Watts• Operates with 9 – 57 V input (POE21, 22, 24, 33, 35 and 38)• Operates with 33 – 57 V input (POE23, 30, 36, 53, 70, and 72)• One minute isolation (hipot): 1500Vrms, from pri and aux to eachsec; 500 Vrms from pri to aux; 500 Vrms between two secondary• Dual outputs can be configured as one single higher power output• AEC-Q200 Grade 1 (–40°C to +125°C)

AEC

Q200 +125°C

Core material Ferrite
Environment RoHS compliant, halogen freeTerminations Tin-silver-copper over tin over nickel over phos bronze.
Weight 7.1 – 7.9 g
Ambient temperature –40°C to +125°C
Maximum part temperature +165°C (Ambient + temp rise)
Storage temperature Component: –40°C to +165°C
Tape and reel packaging: –40°C to +80°C
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)

Flyback Transformers				 			PartPowerL at 0 A2	 Isat3		 DCR max (mOhms) 	number1(W)±10% (µH) (A)		 pri sec1 sec2 aux
POE21PR-33ED
POE23PR-33ED
POE22PR-50ED
POE30PR-50ED
POE24PR-12ED
POE36PR-12ED

21
23
2230
2436

21
54
2148
21
41

6.2
3.2
6.2
3.6
6.3
4.2

31
62
31
62
31
62

10
6.5
17
1052
23

10
6.5
171052
2380
58
80
85
72
85

Leakageinductance4max (µH)

Turns ratio
pri : sec1 : sec2 : aux		
Output5

1 : 0.231 : 0.231 : 0.6921 : 0.125 : 0.125 : 0.375
1 : 0.333 : 0.333 : 0.750
1 : 0.188 : 0.188 : 0.375
1 : 0.750 : 0.750 : 0.667
1 : 0.375 : 0.375 : 0.375

3.3 V, 3.2 A
3.3 V, 3.5 A
5.0 V, 2.2 A
5.0 V, 3.0 A
12 V, 1.0 A
12 V, 1.5 A

0.30
0.67
0.16
0.40
0.15
0.28

1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (150 parts per full reel). Quantities less thanfull reel available: in tape (not machine ready) orwith leader and trailer ($25 charge).
2. Inductance is for the primary, measured at 200 kHz, 0.1 Vrms, 0 Adc.
3. DC current at 25°C that causes an inductance drop of < 30% from its
value without current.
4. Leakage inductance measured between pins 1 and 3 with all otherpins shorted.
5. Output is for each secondary. Output of the aux winding is 10 V, 50 mA.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

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

19PriSec1

34610Aux

Sec2

57

Document 1489-1

Revised 05/05/22© Coilcraft Inc. 2022
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 1489-2

Transformers for PoE
Forward Mode Transformers
HalogenFreeAEC				Part
Power L at 0 A2
number1(W)(µH)

DCR max (mOhms)		
Turns ratio
pri sec1 sec2 aux		 pri : sec1 : sec2 : aux

POE33PR-33ED
POE53PR-33ED
POE35PR-50ED
POE70PR-50ED
POE38PR-12ED
POE72PR-12ED

1712.530
6.5
17.6 2330
10
17.6 122
38
2733
5335703872128 ±25%
100 ±15%128 ±15%100 ±15%128 ±15%100 ±15% 			12.5
6.5231012227145
120340120340
120

1 : 0.625 : 0.625 : 0.75
1 : 0.167 : 0.167 : 0.50
1 : 0.875 : 0.875 : 1.75
1 : 0.250 : 0.250 : 0.50
1 : 2.125 : 2.125 : 1.75
1 : 0.583 : 0.583 : 0.50

Leakage		Volt-time
inductance3		 product5max (µH)
Output4(V-µsec)
0.10
0.40
0.15
0.40
0.15
0.25

3.3 V, 5.0 A
3.3 V, 8.0 A
5.0 V, 3.5 A
5.0 V, 7.0 A
12 V, 1.6 A
12 V, 3.0 A

71
107
71
107
71
107

Q200 +125°C

1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (150 parts per full reel). Quantities less thanfull reel available: in tape (not machine ready) orwith leader and trailer ($25 charge).
2. Inductance is for the primary, measured at 200 kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 1 and 3 with all otherpins shorted.
4. Output is for each secondary. Output of the aux winding is 10 V, 50 mA.
5. Based on 280 mT at 25°C and number of turns on pins 1-3.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

0.512
13,00

XXXX Y

0.571 max
14,5
1POExxPR-XXE

59PriSec134

610

AuxSec2570.590
14,99
56

1100.098
typ2,50

10Internal code
Dot indicates pin 10.050
typ
1,27

0.098
2,50Recommended
Land Pattern

0.005 max
0,1270.551 max
14,00.039
1,000.061
1,550.028
0,706

10.004 /0,100.697 max
17,7Dimensions are ininchesmmPackaging 150 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick,
28 mm pocket spacing, 14.6 mm pocket depth

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 1489-2

Revised 05/05/22© Coilcraft Inc. 2022
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 1489-3

Transformers for PoE
L vs Current
HalogenFree

AEC

Q200 +125°C

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 1489-3

Revised 05/05/22© Coilcraft Inc. 2022
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.