High Frequency Wire Wound
Transformers
EP7 Platforms - SMT
Power Range: up to 5W
Height: 9.27mm Max
Footprint: 13.34mm x 10.7mm Max
Toplogy: Forward and Flyback
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C
(3-4)
500µH ± 10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
8µH MAX
(3-4)
1750mΩ MAX
15mΩ MAX
(2-1)
215mΩ MAX
Hi-Pot
Pri-Sec
K1 Factor
9735.2
Pri. Inductance
(3-4)
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
K1 Factor
FLYBACK TRANSFORMER
500µH ±10%
7.5µH MAX
(3-4)
1750mΩ MAX
(6, 5-8, 7)
35mΩ MAX
(2-1)
215mΩ MAX
Pri-Sec
1500Vrms
IM
DCR
Hi-Pot
1500Vrms
IN
PA1131NL
(6, 5-8, 7)
AR
DCR
Y
PA1130NL
Pri. Inductance
Pri. Inductance
(3-4)
521µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
7.5 µH MAX
(3-4)
1750mΩ MAX
(6, 5-8, 7)
100mΩ MAX
(2-1)
220mΩ MAX
Pri-Sec
1500Vrms
DCR
PR
Hi-Pot
K1 Factor
USA 858 674 8100
1
FLYBACK TRANSFORMER
9735.2
EL
PA1132NL
5
Germany 49 7032 7806 0
Singapore 65 6287 8998
power.pulseelectronics.com
FLYBACK TRANSFORMER
9937.1
Shanghai 86 21 62787060
Pre P744.B (09/18)
China 86 755 33966678
Taiwan 886 3 4356768
http://www.power.pulseelectronics.com/contact
High Frequency Wire Wound
Transformers
EP7 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C
310 µH ±10%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
5 µH MAX
(3-4)
1600mΩ MAX
(6, 5-8, 7)
45 mΩ MAX
(2-1)
2600 mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
6584.5
Pri. Inductance
(3-4)
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
DCR
(3-4)
PA1280NL
Hi-Pot
K1 Factor
FLYBACK TRANSFORMER
310µH ±10%
(6, 5-8, 7)
87 mΩ MAX
(2-1)
2650 mΩ MAX
Pri-Sec
6584.5
(3-4) with
(8, 7, 6, 5) shorted
5 µH MAX
(3-4)
1600 mΩ MAX
(6, 5-8, 7)
550 mΩ MAX
(2-1)
2600 mΩ MAX
Hi-Pot
Pri-Sec
1500Vrms
K1 Factor
6584.5
Pri. Inductance
(8-1)
24.5 µH ±10%
Lk. Inductance
(8-1) with
(2, 3, 4, 5, 6, 7) shorted
110 µH MAX
(8-1)
50 mΩ MAX
(7-2)
50 mΩ MAX
(6-3)
110 mΩ MAX
(5-4)
160 mΩ MAX
Hi-Pot
Pri-Sec
600 Vdc
K1 Factor
1635.5
EL
IM
PR
DCR
DCR
2
1500Vrms
310 µH ±10%
Lk. Inductance
PA1825NL
1600 mΩ MAX
(3-4)
Pri. Inductance
PA1281NL
5 µH MAX
IN
DCR
Y
(3-4)
AR
PA1279NL
Pri. Inductance
power.pulseelectronics.com
5
Pre P744.B (09/18)
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
http://www.power.pulseelectronics.com/contact
High Frequency Wire Wound
Transformers
EP7 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C
(1-4)
100µH ±25%
(1-4)
85 mΩ MAX
(5-7)
8760 mΩ MAX
(7-8)
2200 mΩ MAX
Hi-Pot
Pri-Sec
500 Vrms
K1 Factor
93.5
Pri. Inductance
(3-4)
22.5 µH ±10%
Lk. Inductance
(3-4) with
(5,7) shorted
0.6 µH MAX
(3-4)
(5-7)
(2-1)
Hi-Pot
Pri-Sec
K1 Factor
1401.9
Pri. Inductance
Lk. Inductance
PA2626NL
DCR
Hi-Pot
110 mΩ MAX
1500 Vrms
30 µH ±5%
(3-4) with
(8, 7, 6, 5) shorted
0.7 µH MAX
(3-4)
250 mΩ MAX
(6, 5-8, 7)
72 mΩ MAX
(2-1)
170 mΩ MAX
Pri-Sec
500 Vrms
Pri. Inductance
(3-4)
48.6µH ±5%
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
0.9 µH MAX
(3-4)
250 mΩ MAX
(6, 5-8, 7)
35 mΩ MAX
(2-1)
130 mΩ MAX
Hi-Pot
Pri-Sec
500 Vdc
K1 Factor
1892.5
PA3018NL
power.pulseelectronics.com
Pre P744.B (09/18)
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
1168.2
DCR
3
200 mΩ MAX
(3-4)
PR
EL
K1 Factor
100 mΩ MAX
IN
DCR
IM
PA2617NL
FORWARD TRANSFORMER
Y
DCR
PA2571NL
AR
Pri. Inductance
5
FLYBACK TRANSFORMER
http://www.power.pulseelectronics.com/contact
High Frequency Wire Wound
Transformers
EP7 Platforms - SMT
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C
(3-4)
47.2 µH ±5%
Lk. Inductance
(3-4) with
(1, 2, 8, 7, 6, 5) shorted
0.7 µH MAX
(3-4)
250 mΩ MAX
(6, 5-8, 7)
72 mΩ MAX
(2-1)
170 mΩ MAX
Hi-Pot
Pri-Sec
500 Vrms
K1 Factor
1838.0
Pri. Inductance
(3-4)
Lk. Inductance
(3-4) with
(8, 7, 6, 5) shorted
(3-4)
PA3020NL
DCR
(6, 5-8, 7)
(2-1)
Pri-Sec
K1 Factor
200 mΩ MAX
110 mΩ MAX
500 Vrms
48.8 µH ±5%
(3-4) with
(8, 7, 6, 5) shorted
0.4 µH MAX
(3-4)
100mΩ MAX
(6, 5-8, 7)
200 mΩ MAX
(2-1)
110 mΩ MAX
Pri-Sec
500 Vrms
EL
Hi-Pot
400 mΩ MAX
(3-4)
IM
Lk. Inductance
DCR
0.98 µH MAX
1766.4
Pri. Inductance
PA3021NL
56.7 µH ±5%
IN
Hi-Pot
FLYBACK TRANSFORMER
Y
DCR
AR
PA3019NL
Pri. Inductance
3040.5
FLYBACK TRANSFORMER
FLYBACK TRANSFORMER
PR
K1 Factor
5
4
power.pulseelectronics.com
Pre P744.B (09/18)
http://www.power.pulseelectronics.com/contact
High Frequency Wire Wound
Transformers
EP7 Platforms - SMT
5. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part
number (i.e. PA1130NL becomes PA1130NLT). Pulse complies with industry standard tape
and reel specification EIA481. The tape and reel for this product has a width (W=24mm),
pitch (Po=16mm) an depth (Ko=9.8mm).
IN
AR
Y
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. In high volt-sec applications, it 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
Mechanical
IM
PAXXXXNL
PR
EL
PAXXXNL
5
power.pulseelectronics.com
Pre P744.B (09/18)
http://www.power.pulseelectronics.com/contact
