High Frequency Wire Wound Transformers
EP13Plus Platforms - SMT PA3855/56.XXXNLT
Industry standard footprint, 30% more power
handling
Power Range: Up to 70W
Height: 14.0mm Max
Footprint: 17.7mm x 14.5mm Max
Topology: Forward and Flyback
Part Number
Electrical Specifications @25°C – Operating Temperature -40°C to 130°C 1
Pri. Inductance
(1-3)
54uH +/- 10%
(1-3)
w/
Lk. Inductance
0.67uH Max
(10,9,6,7,4,5) shorted
(1-3)
62
(9-6)
6.5
DCR
mΩ Max
(10-7)
6.5
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
1125.0
Pri. Inductance
(1-3)
48uH +/- 10%
(1-3)
w/
Lk. Inductance
0.67uH Max
(10,9,6,7,4,5) shorted
(1-3)
62
(9-6)
10
DCR
mΩ Max
(10-7)
10
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
1000.0
Pri. Inductance
(1-3)
41uH +/- 10%
(1-3)
w/
Lk. Inductance
0.67uH Max
(10,9,6,7,4,5) shorted
(1-3)
62
(9-6)
20
DCR
mΩ Max
(10-7)
23
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
854.2
Pri. Inductance
(1-3)
21uH +/- 10%
(1-3) w/
Lk. Inductance
0.3uH Max
(10,9,6,7,4,5) shorted
(1-3)
31
(9-6)
10
DCR
mΩ Max
(10-7)
10
(4-5)
180
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
538.5
PA3855.001NL
PA3855.002NL
PA3855.003NL
PA3855.004NL
1
power.pulseelectronics.com
P719. I (03/20)
Schematic
8
1
3
1
Flyback Transformer
5.33
1
2
1
Flyback Transformer
2.67
1
1
1
Flyback Transformer
4.33
1
3
1
Flyback Transformer
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High Frequency Wire Wound Transformers
EP13Plus Platforms - SMT PA3855/56.XXXNLT
Part Number
Electrical Specifications @25°C – Operating Temperature -40°C to 130°C 1
Pri. Inductance
(1-3)
21uH +/- 10%
(1-3) w/
Lk. Inductance
0.3uH Max
(10,9,6,7,4,5) shorted
(1-3)
31
(9-6)
14
DCR
mΩ Max
(10-7)
14
(4-5)
180
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
583.3
Pri. Inductance
(1-3)
21uH +/- 10%
(1-3)
w/
Lk. Inductance
0.3uH Max
(10,9,6,7,4,5) shorted
(1-3)
31
(9-6)
58
DCR
mΩ Max
(10-7)
58
(4-5)
180
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
583.3
Pri. Inductance
(6-9)
2.5uH +/- 10%
(6-9
w/
Lk. Inductance
0.2uH Max
(1,2,3,5) shorted
(1-2)
80
DCR
(3-5)
100
mΩ Max
(6,7-9,10)
9
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
208.3
Pri. Inductance
(1-3)
100
uH +/- 15%
(1-3)
w/
Lk. Inductance
0.4uH Max
(10,9,6,7,4,5) shorted
(1-3)
29.4
(9-6)
6.5
DCR
mΩ Max
(10-7)
6.5
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
27.8
Pri. Inductance
(1-3)
100uH +/- 15%
(1-3) w/
Lk. Inductance
0.4uH Max
(10,9,6,7,4,5) shorted
(1-3)
29.4
(9-6)
10
DCR
mΩ Max
(10-7)
10
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
27.8
PA3855.005NL
PA3855.006NL
PA3855.008NL
PA3856.001NL
PA3856.002N
2
power.pulseelectronics.com
P719. I (03/20)
Schematic
3
1
2.25
1
Flyback Transformer
1.33
1
0.89
1
Flyback Transformer
0.25
1
0.25
Flyback Transformer
6
1
3
1
Forward Transformer
4
1
2
1
Forward Transformer
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High Frequency Wire Wound Transformers
EP13Plus Platforms - SMT PA3855/56.XXXNLT
Part Number
Electrical Specifications @25°C – Operating Temperature -40°C to 130°C 1
Pri. Inductance
(1-3)
100uH +/- 15%
(1-3)
w/
Lk. Inductance
0.4uH Max
(10,9,6,7,4,5) shorted
(1-3)
29.4
DCR
(9-6)
31.6
mΩ Max
(10-7)
36
(4-5)
120
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
27.8
Pri. Inductance
(1-3)
128uH +/- 25%
(1-3) w/
Lk. Inductance
0.15uH Max
(10,9,6,7,4,5) shorted
(1-3)
17.6
(9-6)
14.4
DCR
mΩ Max
(10-7)
17
(4-5)
410
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
41.7
Pri. Inductance
(1-3)
128uH +/- 15%
(1-3)
w/
Lk. Inductance
0.15uH Max
(10,9,6,7,4,5) shorted
(1-3)
17.6
(9-6)
31.6
DCR
mΩ Max
(10-7)
36
(4-5)
410
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
41.7
Pri. Inductance
(1-3)
128uH +/- 15%
(1-3) w/
Lk. Inductance
0.15uH Max
(10,9,6,7,4,5) shorted
(1-3)
17.6
(9-6)
105.6
DCR
mΩ Max
(10-7)
122
(4-5)
426
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
41.7
Pri. Inductance
(1-2)
200uH +/- 25%
(1-2)
w/
Lk. Inductance
0.36uH Max
(7,8,9,10) shorted
(1-2)
60
(3-4)
75
DCR
mΩ Max
(8-7)
90
(10-9)
90
Hi-Pot
Pri-Sec
2250
Vdc
K1 Factor
33.3
PA3856.003NL
PA3856.004NL
PA3856.005NL
PA3856.006NL
PA3856.007NL
3
power.pulseelectronics.com
P719. I (03/20)
Schematic
1.71
1
0.86
1
Forward Transformer
1.6
1
1.2
1
Forward Transformer
1.14
2
1
1
Forward Transformer
0.47
1
0.82
1
Forward Transformer
0.91
1
0.91
1
Forward Transformer
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High Frequency Wire Wound Transformers
EP13Plus Platforms - SMT PA3855/56.XXXNLT
Notes:
1. The temperature of the component (ambient plus temperature rise) must be within the 4. The standard pin-numbering for this package is indicated in the below mechanical
stated operating temperature range.
drawing showing pin 1 on the lower right corner and the numbers proceeding clockwise
2. For flyback topology applications, it is necessary to ensure that the transformer will not
to pin 10 on the upper right corner.
saturate in the application. The peak flux density (Bpk) should remain below 2700Gauss. 5. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part numTo calculate the peak flux density use the following formula:
ber (i.e. (PA2160.001NL becomes PA2160.001NLT). Pulse complies with industry standard
Bpk (Gauss) = K1_Factor * Ipk(A)
tape and reel specification EIA481.
3. In high volt-μsec applications, it is important to calculate the core loss of the transformer. Approximate transformer core loss can be calculated as:
CoreLoss (W) = 3.84E-14 * (Freq_kHz)1.63 * (ΔB_Gauss)2.63
where ΔB can be calculated as:
For Flyback Topology: ΔB = K1_Factor * ΔI(A)
For Forward Topology: ΔB = K1_Factor * Volt-μsec
Mechanical
PM2160.XXXNL
PART NUMBER
4
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P719. I (03/20)
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High Frequency Wire Wound Transformers
EP13Plus Platforms - SMT PA3855/56.XXXNLT
TAPE & REEL INFO
Marking
Marking
K0
A
W
P1
G
Direction of tape
PART NUMBER
SURFACE MOUNTING TYPE, REEL/TAPE LIST
REEL SIZE (mm)
TAPE SIZE (mm)
A
G
P1
W
K0
PA3855/56.XXXNLT
For More Information
Pulse Worldwide
Pulse Europe
Headquarters
Pulse Electronics GmbH
15255 Innovation Drive Ste 100
Am Rottland 12
San Diego, CA 92128
58540 Meinerzhagen
U.S.A.
Germany
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 2354 777 100
Fax: 49 2354 777 168
Ø330
32.4
24
32
13.2
QTY
PCS/REEL
130
Pulse China Headquarters
Pulse Electronics (ShenZhen) CO., LTD
D708, Shenzhen Academy of
Aerospace Technology,
The 10th Keji South Road,
Nanshan District, Shenzhen,
P.R. China 518057
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Pulse South Asia
3 Fraser Street
0428 DUO Tower
Singapore 189352
Pulse North Asia
1F., No.111 Xiyuan Rd
Zhongli City
Taoyuan City 32057
Taiwan (R.O.C)
Tel: 86 755 33966678
Fax: 86 755 33966700
Tel: 86 21 62787060
Fax: 86 2162786973
Tel: 65 6287 8998
Fax: 65 6280 0080
Tel: 886 3 4356768
Fax: 886 3 4356820
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may
be trademarks or registered trademarks of their respective owners. © Copyright, 2020. Pulse Electronics, Inc. All rights reserved.
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