WebpageSample& buy

Support& FAQ

Document 1509 -1

High Power PoE Transformers

For ST PM8804& ST PM8805
Reference Design• Optimized for STMicroelectronics high-power PoE PD
controller evaluation board STEVAL-POE00xV1• Designed to meet upcoming IEEE 802.3bt standard• Operates at 250 kHz with 36 – 72 Volts input.
Core material Ferrite
Terminations RoHS tin-silver-copper over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 11.5 – 13.5 g
Ambient temperature –40°C to +125°C
Max part temperature +165°C (ambient + self-heating)Storage temperature –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)
Packaging 175 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick,
32 mm pocket spacing, 12 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.

Active Clamp Forward Transformers		
Part1numberInductance		
DCR max (Ohms)
at 0 A2(µH)
prisecaux

Leakage		Turns ratio
inductance4max (µH)
pri  :    sec  :    aux

RA7129-BLD

134 ± 25%

0.02650.0035

0.174

0.180

1 : 0.333 : 0.667

5 V, 20 A

1500

MA5509-CLD

70 ± 10%0.05900.0028

0.300

0.838

1 : 0.200 : 0.533

3.3 V, 20 A

1500

OutputIsolation5(Vrms)

5 V, 20 A

1500

OutputIsolation5(Vrms)

Flyback Transformers		
Part1numberInductanceat 0 A2(µH)

NA6083-BLD

70 ± 10%

Inductance		
DCR max (Ohms)
at 3.5 A3(µH)
prisecbias
60

0.111

0.006

1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel). Quantities less than full
reel available: in tape (not machine ready) or withleader and trailer ($25 charge).
2. Inductance for is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc.
3. Minimum inductance for the primary, measured at 250 KHz, 0.2 Vrms,
3.5 Adc.
4. Leakage inductance is for the primary winding with the secondary
windings shorted.
5. Isolation (hipot) is measured for one minute: 1500Vrms from primary
and aux/bias to secondary; 500Vrms from primary to aux/bias.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Leakage		Turns ratio
inductance4max (µH)
pri  :  sec  : bias

0.66

1.820

1 : 0.20 : 0.60

Schematic­
12Pri
43
5
Aux / Bias

121110Sec
987

6Connect pin 1 to 2 and pin 3 to 4 on the PC board.
Connect pins 10, 11 and 12 together and pins
7, 8 and 9 together on the PC board

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 1509-1

Revised 06/03/22© 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 1509-2

High Power PoE Transformers
Dimensions
Dot indicates pin 1
121

Part numberXXXXXX-XL

0.810 max
20,57

Internal code

XXXXY

671.181max
30,000.45max
11,43
0.084
2,130.004 /0,100.969
24,60.827
21,00.028

67 0,721120.130
3,30

0.930
23,62
10.1183,00.050
1,27

Recommended
Land Pattern
0.118
3,0
Dimensions are ininchesmm

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 1509-2

Revised 06/03/22© 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.