Document 348
SMT Flyback Transformer
This flyback transformer was developed specifically for
ON Semiconductor’s isolated 2 W Bias Supply using the
NCP1030, and is specified in Application Note AND8119/D.
It is ideal for 48 V telecom and 42 V automotive applications.
It features interleaved primary and secondary windings to
minimize leakage inductance. It is designed for 35–76 V
input. Isolation (hipot) is 1500 Vrms, one minute between
the primary and secondary windings and 750 Vrms between
windings and the core.
To request free evaluation samples, contact Coilcraft or
visit www.coilcraft.com.
for ON Semiconductor
NCP1030
Core material
Ferrite
Terminations
RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze.
Weight
0.96 g
Ambient temperature
–40°C to +85°C
Maximum part temperature
+125°C (ambient + temp rise)
Storage temperature
Component: –40°C to +85°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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
600 per 13″ reel Plastic tape: 24 mm wide,
0.37 mm thick, 16 mm pocket spacing, 6.1 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
Part
number
1
Inductance
at 0 Adc
2
±10% (µH)
120
Inductance
at
Ipk
3
min (µH)
102
DCR max
(Ohms)
0.655 (pins 1 – 4)
0.820 (pins 2 – 3)
0.248 (pins 7 – 8)
0.248 (pins 5 – 6)
Leakage
Inductance
4
max (µH)
0.95
Turns ratio
pri : sec (7-8) pri : sec (5-6)
1
:
0.36
1
:
0.36
Ipk
3
(mA)
400
B0226-EL_
1. When ordering, specify a
packaging
code:
B0226-ELD
D
= 13″ machine ready reel. EIA-481 embossed plastic
tape (600 per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance is for the primary, measured at 275 kHz, 0.5 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. Leakage inductance is for the primary winding with the secondary wind-
ings shorted.
5. Operating temperature range -40°C to +85°C.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Packaging:
1
2
Primary
35 V – 76 V
3
4
8
Sec 1
12 V, 167 mA
7
4
1
Dot indicates pin 1
B0226-E
XXXX Y
0.400 max
10,16
0.028
0,70
0.079
2,00
Parts manufactured prior
to December 2011 may
be marked differently.
0.475 max
12,07
0.235 max
5,97
0.004 / 0,10
0.067
1,70
5
6
7
8
1
0.358
9,09
8
6
Sec 2
12 V, 3 mA
5
3
2
1
0.079
2,00
0.063
1,60
Dimensions are in
inches
mm
Recommended
Land Pattern
Document 348
Revised 06/18/15
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