Standard Flyback Regulators
ctparts.com
Not shown at actual size.
Equivalent Magnetics for LM258x Flyback Regulator
Compliant Available
RoHS
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
Part Number CTQ4435-B_ CTQ4434-B_ CTQ4436-B_ CTQ4337-B_ CTQ4343-B_ CTQ4344-B_ CTQ4437-B_
Type SM TH SM TH TH TH SM
L at 0 Adc ±15% (µH) 22 22 22 22 85 85 55
L at Ipk Min. (µH) 19.0 19.8 19.0 19.8 76.5 76.5 47.3
Volt-time product Max. (Vµsec) 166.5 162.0 166.5 162.0 364.5 364.5 299.7
Leakage Inductance1 Max. (µH) 0.7 2.0 0.5 2.0 3.5 3.5 2.0
DCR Primary (Ω) 0.020 0.028 0.025 0.030 0.150 0.145 0.110
DCR Secondary (Ω) 0.025 0.028 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 0.042
Turns Ratio 1:1 1:1 1:2.5:2.5 1:2.5:2.5 1:0.8:0.8 1:0.35:0.8:0.8 1:0.5:1.167:1.167
Ipk2 (A) 4.85 5.0 5.0 5.0 3.0 3.0 3.0
CTQ4338-B_
TH
66
59.4
499.5
3.5
0.090
1:0.5:1.167:1.167
3.0
CTQ4438-B_ CTQ4339-B_ CTS6057-A_ CTS6000-A_
SM TH SM TH
65 66 47 47
57.0 59.4 40.0 40.0
299.7 499.5 233.1 212.6
3.0 3.0 2.0 2.0
0.065 0.090 0.065 0.065
1:1.2:1.2 1:1.2:1.2 1:1 1:1
3.0 3.0 3.0 3.0
SCHEMATICS
Schematics for Surface Mount (SM)
CTQ4435-B, CTS6057-A CTQ4436-B, CTQ4438-B CTQ4437-B
Schematics for Through Hole (TH)
CTQ4434-B, CTS6000-A CTQ4337-B, CTQ4339-B CTQ4338-B CTQ4343-B CTQ4344-B
12.11.06
Technologies
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
CENTRAL
Standard Flyback Regulators
ctparts.com
PHYSICAL DIMENSIONS
Unit: inch
Surface Mount (SM) CTQ4435-B / CTQ4436-B / CTQ4437-B / CTQ4438-B / CTS6057-A
1 12
0.004 MAX
6
7
Recommended Land pattern
Through Hole (TH) CTQ4434-B / CTQ4337-B / CTQ4338-B / CTQ4339-B / CTS6000-A
1
4 1
81
4
4
5
8
5
Through Hole (TH) CTQ4343-B / CTQ4344-B
Recommended Footprint
12.11.06
Technologies
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
CENTRAL
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