Document 1769-1
No-Opto Flyback Transformers
Halogen
Free
• Optimized for MAX17690 No-Opto Isolated Flyback Controllers
for Analog Devices
• Designedfor125–170kHzwith10–28Vor20–56Vinputvoltage
• 1500 Vrms, one minute isolation (hipot) between primary and
secondary windings
Core material Ferrite
Terminations RoHS tin silver copper over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 1.5 g
Max part temperature +125°C (including temp rise)
Storage temperature Component: –40°C to +125°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)
Packaging 500/13″ reel Plastic tape: 24 mm wide, 0.36 mm thick,
16 mm pocket spacing, 6.13 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
DCR max
Inductance
at 0 A2
±±0ꢀ (ꢁµ)
Leakage
inductance
max (ꢁµ)4
(Ohms)
Turns ratio
pri : sec
Part
Isat3
(A)
Isolation5
(Vrms)
number1
pri
sec
Output
±0 – 28 V input
ZC1570-AED
ZC1642-AED
ZC1645-AED
20 – 56 V input
7.85 @ 130 KHz
7.85 @ 170 KHz
7.85 @ 170 KHz
4.8
4.7
4.5
0.036 0.0072
0.035 0.049
0.032 0.190
0.20
0.20
0.20
1 : 0.375
1 : 0.875
1 : 1.75
1500
1500
1500
5 V, 1.2 A
12 V, 0.72 A
24 V, 0.36 A
ZC1641-AED
ZC1644-AED
ZC1649-AED
31.40 @ 125 KHz
31.40 @ 170 KHz
31.40 @ 170 KHz
2.3
2.3
2.3
0.140 0.0072
0.137 0.048
0.130 0.180
0.74
0.74
0.60
1 : 0.375
1 : 0.875
1 : 1.75
1500
1500
1500
5 V, 1.2 A
12 V, 0.72 A
24 V, 0.36 A
1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape
(500 parts per full reel).Quantities less than full reel
available: in tape (not machine ready) or with leader
and trailer ($25 charge).
Schematics
2. Inductance is for the primary, measured at 0.1 Vrms, 0 Adc.
3. DC current that causes the primary inductance drop 30% from its value
without current.
4. Leakage Inductance is for the primary, measured with secondary
windings shorted together.
5. 1500 Vrms, one minute isolation (hipot) between primary and secondary
windings.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Document 1769 Revised 10/06/23
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2023
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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