 
Q4344-BL
Flyback Regulator Transformer
| New RoHS part number is shown. Lead was removed from terminations. The last character is now L to indicate RoHS compliance. (View
old data sheet.) |
- For flyback regulator applications using LM258X SIMPLE
SWITCHER®
- Recommended and approved by National Semiconductor
- 500 Vrms isolation between windings
- RoHS-compliant – Tin-silver over tin over copper
- COTS Plus tin-silver-copper and tin-lead terminations available
- Custom versions available
 Photo  Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
 Dimensions
 |
| T4 |
Q4344-BL |
85 |
76.5 |
364.5 |
3.5 |
0.145 |
0.20 (10-9)
0.20 (7-6)
0.03 (4-5) |
1 : 0.8
1 : 0.8
1 : 0.35 |
12 V, 0.75 A
12 V, 0.75 A
5 V, 3.0 A |
3.0 |
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| 1 |
Leakage inductance
measured across the primary at 0.10 Vrms, 100 kHz. |
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2 |
DC current at which the primary voltage is
measured. |
| 3 |
Ambient temperature range: |
–40°C to +85°C |
| 4 |
Storage temperature range: |
Component: –40°C to +85°C
Packaging: –55°C to +80°C |
| 5 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
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