Flyback Transformer
for
National Semiconductor LM5071
- Developed for National Semiconductor LM5071PD Controller
- Offers 84% efficiency as specified in NCS application note AN-1430
- Designed to operate in continuous mode at 250 kHz with input voltage of 24 – 60 V
- Industry standard EP13 surface mount package
- 1500 Vrms isolation from primary and aux to secondary
- Coilcraft's DA2257-AL and FA2519-AL are designed for the NSC LM5071 and LM5072
- The FA2677-AL is specified by NSC for LM5072
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations
Photo 
Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
Dimensions 
Schematic
Tape and reel specifications
3D models
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| DA2383-AL_ | 127.0 | 114.3 | 0.012 | (sec) | 1.25 | 6 : 1 | (pri : sec) | 1.0 | 3.3 V, 4.0 A (sec) |
| 0.310 | (aux) | 2 : 1 | (pri : aux) | 10 V, 0.05 A (aux) | |||||
| 0.255 | (pri) | ||||||||
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| 1 | When ordering, please specify packaging code: e.g. DA2383-ALD | |
| Packaging: |
D = 13" reel, machine-ready EIA-481 embossed plastic tape (175 parts 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. |
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| 2 | Inductance is for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc | |
| 3 | Ipk is peak primary current drawn at minimum input voltage. | |
| 4 | Leakage inductance measured on the primary winding with all secondary pins shorted. | |
| 5 | Output for the secondary is with the windings connected in parallel. | |
| 6 | Ambient temperature range: | –40°C to +85°C |
| 7 | Storage temperature range: | Component: –40°C to +85°C T&R packaging: –40°C to +80°C |
| 8 | Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. | |
| 9 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
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