High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Power Range: up to 30W
Height: 11.45mm Max
Footprint: 15.24mm x 13.1mm Max
Toplogy: Forward and Flyback
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
PA1133NL
Pri. Inductance
(3-4)
253.4µH ± 10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
7.5µH MAX
(3-4)
420mΩ MAX
(6, 5-8, 7)
7.5mΩ MAX
(2-1)
115mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
4671.8
Pri. Inductance
(3-4)
253.4µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
7.5µH MAX
(3-4)
420mΩ MAX
(6, 5-8, 7)
16mΩ MAX
(2-1)
115mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
4671.8
Pri. Inductance
(3-4)
264.1µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
6 µH MAX
(3-4)
800mΩ MAX
(6, 5-8, 7)
45mΩ MAX
(2-1)
115mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
4769.7
DCR
PA1134NL
DCR
PA1135NL
DCR
1
PulseElectronics.com
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
PA1253NL
Pri. Inductance
(3-4)
253.4 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
12 µH MAX
(3-4)
420 mΩ MAX
(2-1)
335 mΩ MAX
(5-6)
9.5 mΩ MAX
(7-8)
7.2 mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
4671.8
Pri. Inductance
(3-4)
20.4µH ±10%
Lk. Inductance
(3-4) with
(10, 9, 8, 7) shorted
1.5 µH MAX
(3-4)
80 mΩ MAX
(6, 5-8, 7)
7.5 mΩ MAX
(2-1)
150 mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
1002.9
Pri. Inductance
(3-4)
155 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
5 µH MAX
(3-4)
530 mΩ MAX
(6, 5-8, 7)
31 mΩ MAX
(2-1)
900 mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
3117.5
Pri. Inductance
(3-4)
155 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
5 µH MAX
(3-4)
570 mΩ MAX
(6, 5-8, 7)
40 mΩ MAX
(2-1)
1000 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
3117.5
DCR
PA1277NL
DCR
PA1282NL
DCR
PA1283NL
DCR
2
PulseElectronics.com
(from pin 8 to 5)
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
PA1284NL
Pri. Inductance
(3-4)
155 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
5 µH MAX
(3-4)
540 mΩ MAX
(6, 5-8, 7)
370 mΩ MAX
(2-1)
920 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
3117.5
Pri. Inductance
(3-4)
20.4 µH ±10%
Lk. Inductance
(3-4) with
(8,5) shorted
1.5 µH MAX
(3-4)
80 mΩ MAX
(5-8)
30 mΩ MAX
(2-1)
105 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1002.9
Pri. Inductance
(3-4)
185 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
10 µH MAX
(3-4)
420 mΩ MAX
(6, 5-8, 7)
12 mΩ MAX
(2-1)
115 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
3410.8
Pri. Inductance
(3-4)
25.2µH ±10%
Lk. Inductance
(3-4) with
(1, 2, 8, 7, 6, 5) shorted
0.55 µH MAX
(3-4)
135 mΩ MAX
(6, 5-8, 7)
11 mΩ MAX
(2-1)
115 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vdc
K1 Factor
1115.0
DCR
PA1370NL
DCR
PA1721NL
DCR
PA2362NL
DCR
3
PulseElectronics.com
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FORWARD TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
PA2363NL
Pri. Inductance
(3-4)
25.2 µH ±10%
Lk. Inductance
(3-4) with
(1, 2, 8, 7, 6, 5) shorted
0.85 µH MAX
(3-4)
135 mΩ MAX
(6, 5-8, 7)
9 mΩ MAX
(2-1)
180 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1115.0
Pri. Inductance
(3-4)
25.2µH ±10%
Lk. Inductance
(3-4) with
(1, 2, 8, 7, 6, 5) shorted
1 µH MAX
(3-4)
145 mΩ MAX
(6, 5-8, 7)
7.5 mΩ MAX
(2-1)
110 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1059.4
Pri. Inductance
(3-4)
24µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
0.75 µH MAX
(3-4)
82 mΩ MAX
(6, 5-8, 7)
13 mΩ MAX
(2-1)
80 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1179.9
Pri. Inductance
(3-4)
24 µH ±10%
Lk. Inductance
(1-4) with
(8, 7, 6, 5) shorted
0.6 µH MAX
(3-4)
90 mΩ MAX
(6, 5-8, 7)
23 mΩ MAX
(2-1)
130 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vdc
K1 Factor
1179.9
DCR
PA2364NL
DCR
PA2454NL
DCR
PA2455NL
DCR
4
PulseElectronics.com
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
PA2456NL
Pri. Inductance
(3-4)
24 µH ±10%
Lk. Inductance
(3,4) with
(8, 7, 6, 5) shorted
0.6 µH MAX
(3-4)
86 mΩ MAX
(6, ,5-8, 7)
86 mΩ MAX
(2-1)
470 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1179.9
Pri. Inductance
(3-4)
50.5 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
1.4 µH MAX
(3-4)
420 mΩ MAX
(6, 5-8, 7)
47 mΩ MAX
(2-1)
174 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
1241.4
Pri. Inductance
(4-1) with 3,2 shorted
40 µH ±10%
(4-1) with 3,2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.45 µH MAX
(3-4)
410 mΩ MAX
(6, 5-8, 7)
140 mΩ MAX
(2-1)
140 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vdc
K1 Factor
1241.4
Pri. Inductance
(4-1) with 3,2 shorted
40 µH ±10%
(4-1) with 3.2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.45 µH MAX
(4-1)
405 mΩ MAX
(8-6)
470 mΩ MAX
(7-5)
470 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vdc
K1 Factor
983.3
DCR
PA2627NL
DCR
Lk. Inductance
PA3948.001NL
DCR
Lk. Inductance
PA3948.002NL
DCR
5
PulseElectronics.com
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C5
(4-1) with 3, 2 shorted
40 µH ±10%
(4-1) with 3, 2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.45 µH MAX
(4-1)
405 mΩ MAX
(8-6)
470 mΩ MAX
(7-5)
470 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
983.3
Pri. Inductance
(4-1) with 3, 2 shorted
40 µH ± 10%
(4-1) with 3, 2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.45 µH MAX
(4-1)
220 mΩ MAX
(8-6)
58 mΩ MAX
(7-5)
58 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
983.3
Pri. Inductance
(4-1) with 3, 2 shorted
40 µH ±10%
(4-1) with 3, 2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.6 µH MAX
(4-1)
220 mΩ MAX
(7-6)
1275 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
983.3
Pri. Inductance
(4-1) with 3, 2 shorted
40 µH ±10%
(4-1) with 3, 2 shorted
32 µH Min at 1.88A
(4-1) with
(5, 6, 7, 8) shorted
1.65 µH MAX
(4-1)
220 mΩ MAX
(7-6)
3350 mΩ MAX
Hi-Pot
Pri-Sec
1500 Vrms
K1 Factor
983.3
Pri. Inductance
Lk. Inductance
PA3948.003NL
DCR
Lk. Inductance
PA3948.004NL
DCR
Lk. Inductance
PA3948.005NL
DCR
Lk. Inductance
PA3948.006NL
DCR
6
PulseElectronics.com
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
Notes:
1. The temperature of the component (ambient plus temperature rise) must be within
the stated operating temperature range.
2. The above transformers and inductors have been tested and approved by Pulse’s
power IC partners and are sited in the appropriate datasheet or evaluation board
documentation at these companies. To determine which IC and IC partners are
matched with the above Pulse part numbers please consult the IC Cross Reference on
the Pulse website.
3. For flyback topology applications, it is necessary to ensure that the transformer will
not saturate in the application. The peak flux density (Bpk) should remain below
2700Gauss.To calculate the peak density, use the following formula:
Bpk (Gauss) = K1_Factor * Ipk (A)
4.
5.
In high volt-sec applications,5it is important to calculate the core loss of the transformer.Approximate transformer core loss can be calculated as:
CoreLoss (W) = 2.5E-14 * (Freq_kHz)1.63 * (ΔB_Gauss)2.63
where ΔB can be calculated as:
For Flyback Topology: ΔB = K1_Factor * (A)
For Forward Topology: ΔB = K1_Factor * Volt-µsec
Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part
number (i.e. PA1136NL becomes PA1136NLT). Pulse complies with industry standard
tape and reel specification EIA481. The tape and reel for this product has a width
(W=32mm), pitch (Po=24mm) an depth (Ko=13.2mm).
Mechanical
PAXXXXNL
PAXXXNL
Date Code
Country of Origin
For More Information
Americas - prodinfo_power_americas@yageo.com | Europe - prodinfo_power_emea@yageo.com | Asia - prodinfo_power_asia@yageo.com
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, 2023. Pulse Electronics, Inc. All rights reserved.
YAGEO Corporation and its affiliates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space flight.
7
PulseElectronics.com
P742.F (11/23)
High Frequency Wire Wound
Transformers
EP10 Platforms - SMT
8
PulseElectronics.com
P742.F (11/23)
