HA3648-BL

Document 710
Planar Transformer
•
•
•
•
For National Semiconductor
LM5037 PWM Controller
Developed for NSC LM5037 Dual-Mode PWM Controller
Designed as half bridge in forward topology
Auxiliary winding provides 10 V to the chipset
Input voltage range: 36 – 78 V
Core material Ferrite
Terminations RoHS matte tin over nickel over brass. Other terminations available at additional cost.
Weight 11.8 g
Ambient temperature –40°C to +85°C
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 200 per 13″reel Plastic tape: 44 mm wide,
0.37 mm thick, 32 mm pocket spacing, 9.35 mm pocket depth
PCB washing Only pure water or alcohol recommended
OutputOutput Primary Leakage
Pri/sec
Part
Output voltage current inductance2 inductance3 DCR max4
Turns ratio
Isolation
1
number power (W)
nom (V)
(Adc)
min (µH)
max (µH)
(mOhms)
pri : sec1 : sec2 : aux(Vdc)
HA3648-BL_
50
5
10
30.0
0.040
pri:6.0
2 : 1 : 1 : 21500
sec:
4.0
aux: 160
1. When ordering, please specify a packaging code:
2. Inductance measured on an Agilent/HP 4284 between pins 3 and 4 at 250
kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 3 and 4 at 250 kHz, 0.1 Vrms,
0 Adc with pins 6, 8 and 10 shorted.
4. DCR for the secondary is from pin 6 to pin 10.
5. Electrical specifications at 25°C.
HA3648-BLD
Packaging:D =13″ machine ready reel. EIA-481 embossed plastic
tape (200 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.
Dot indicates pin 1
4
5
XXXXY
0.810 max
3
20,57
HA3648-BL
1
10
0.190
4,82
8
0.800
20,32
0.080
2,03
0.095
2,41
0.920
max
23,37
Primary
10
1
3
4
5
6
3
8
0.250
6,36
1
Aux
6
Recommended
Land Pattern
4
0.110
2,79
5
10
Sec1
8
Sec2
6
Parts manufactured prior to December 2011
may be marked differently.
0.360 max
9,14
0.006 /0,15
Dimensions are in
inches
mm
Document 710 Revised 02/18/15