Standard Flyback Regulators
ctparts.com
Not shown at actual size.
Equivalent Magnetics for
LM258x Flyback Regulator
RoHS
Compliant
Available
1. Leakage inductance measured across the primary at 0.10 Vrms, 100kHz
2. DC current at which the primary inductance is measured
3. Operating temperature range -40°C to +85°C
4. Electrical specifications at 25°C
ORDERING INFO
CTQ~~~~-BF Please specify “F” for RoHS compliant
L at 0 Adc
±±15
(µH)
L at Ipk
Min.
(µH)
Volt-time
product
Max. (Vµsec)
Leakage
Inductance
Max. (µH)
DCR
Primary
(Ω)
DCR
Secondary
1
2
Ipk
Part Number
Type
(Ω)
Turns Ratio
(A)
CTQ4435-B_
CTQ4434-B_
CTQ4436-B_
SM
TH
SM
22
22
22
19.0
19.8
19.0
166.5
162.0
166.5
0.7
2.0
0.5
0.020
0.028
0.025
0.025
0.028
1:1
1:1
1:2.5:2.5
4.85
5.0
5.0
0.23 (10-11)
0.25 (9-8)
0.32 (8-7, 6-5)
0.011 (10-9, 7-6)
0.20 (10-9, 7-6)
0.03 (4-5)
0.035 (3-2)
0.30 (9-8)
0.32 (4-5)
0.039 (8-7)
0.58 (6-5)
0.60 (3-4)
0.15 (10-11, 9-8)
0.20 (8-7)
0.24 (5-6)
0.065
CTQ4337-B_
CTQ4343-B_
CTQ4344-B_
TH
TH
TH
22
85
85
19.8
76.5
76.5
162.0
364.5
364.5
2.0
3.5
3.5
0.030
0.150
0.145
1:2.5:2.5
1:0.8:0.8
1:0.35:0.8:0.8
5.0
3.0
3.0
CTQ4437-B_
CTQ4338-B_
SM
TH
55
66
47.3
59.4
299.7
499.5
2.0
3.5
0.110
0.090
1:0.5:1.167:1.167
1:0.5:1.167:1.167
3.0
3.0
CTQ4438-B_
CTQ4339-B_
SM
TH
65
66
57.0
59.4
299.7
499.5
3.0
3.0
0.065
0.090
1:1.2:1.2
1:1.2:1.2
3.0
3.0
CTS6057-A_
CTS6000-A_
SM
TH
47
47
40.0
40.0
233.1
212.6
2.0
2.0
0.065
0.065
1:1
1:1
3.0
3.0
0.042
SCHEMATICS
Schematics for Surface Mount (SM)
CTQ4435-B, CTS6057-A
CTQ4436-B, CTQ4438-B
CTQ4437-B
Schematics for Through Hole (TH)
CTQ4337-B, CTQ4339-B
CTQ4338-B
CTQ4343-B
CTQ4344-B
CTQ4434-B, CTS6000-A
12.11.06
Manufacturer of Passive and Discrete Semiconductor Components
800-684-5322 Inside US 949-453-1811 Outside US
Copyright © 2006 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
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