SMT Flyback Transformers for
TI TPS23753 PoE Interface
- Please see the HA3803-BL for an improved version of the HA3803-AL
- Developed for Texas Instruments TPS23753 for use at 125 kHz.
- Listed as T2 on SLVU245 for evaluation module TPS23753EVM.
- 10 W output from 36 – 57 V PoE input or 24 V adapter; 6 W output from 12 V adapter.
- 1500 Vrms primary and bias to secondary isolation
- RoHS-compliant. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations
Photo 
Pricing 
Materials declaration HA3801-AL HA3802-AL
HA3803-AL
SPECIFICATIONS
Schematic
Dimensions 
Tape and reel specifications
3D models
HA3801-AL
HA3802-AL
HA3803-AL
 |
| HA3801-AL_ | 166.5 | 150.0 | 0.735 (pri) 0.0225 (sec) 0.510 (drive) 0.985 (bias) |
2.50 | 0.45 | 6.5 : 1 | 3.7 : 1 | 2.0 : 1 | 1.2 | 3.3 V, 3 A |
| HA3802-AL_ | 150.0 | 135.0 | 0.520 (pri) 0.0275 (sec) 0.525 (drive) 0.770 (bias) |
2.00 | 0.40 | 5.0 : 1 | 3.2 : 1 | 2.25 : 1 | 1.2 | 5.0 V, 2 A |
| HA3803-AL_ | 166.5 | 150.0 | 0.760 (pri) 0.101 (sec) 0.500 (drive) 1.10 (bias) |
2.05 | 0.245 | 2.0 : 1 | 4.0 : 1 | 2.0 : 1 | 1.2 | 12 V, 0.83 A |
 |
|
|
|
|
|
|
|
|
|
|
| 1 | When ordering, please specify termination code: e.g. HA3802-ALD | |
| Termination: | L = RoHS compliant tin-silver (96.5/3.5) over tin over nickel over phos bronze Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). |
|
| Packaging: |
D = 13" reel, machine-ready EIA-481 embossed plastic tape (200 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. |
|
| 2 | Inductance is for the primary, measured at 100 kHz, 1.0 Vrms, 0. | |
| 3 | Ipk: Peak primary current drawn at minimum input voltage. | |
| 4 | DCR for the secondary is with windings connected in parallel. | |
| 5 | Leakage inductance for the primary is with the secondary and drive windings shorted; leakage inductance for the drive winding is with the secondary windings shorted. | |
| 6 | Turns ratio is with the secondary windings connected in parallel. | |
| 7 | Output is with the secondary windings connected in parallel. Bias winding output is 10 V, 20 mA. Output of the drive winding: 5.6 V, 10 mA (HA3801-AL); 7.5 V, 10 mA (HA3802-AL); 6.0 V, 10 mA (HA3803-AL) |
|
| 8 | Ambient temperature range: | –40°C to +125°C |
| 9 | Storage temperature range: | Component: –40°C to +125°C T&R packaging: –40°C to +80°C |
| 10 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
|
||
|
|
||