SMT Transformer
for Power over Ethernet
| New RoHS part numbers are shown. Lead was removed from terminations. The next to the last character is now L to indicate RoHS compliance. (View old data sheet.) |
- Developed for Maxim MAX5941B PoE Interface/PWM Controller
- IEEE 802.3af compliant PoE forward converter applications
- Low profile, surface mount transformer
- 3.3 V, 4 A output
- 275 kHz switching frequency at a 50% duty cycle
- 1500 Vrms isolation from primary, reset and bias to the secondary and drive
- 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 model
 |
||||||
| B0863-BL_ | 165.0 | 0.061 (primary) 1.00 (reset) 1.29 (bias) 0.008 (sec) 0.023 (drive) |
0.75 | 28 – 60 | 1 : 0.24 : 1 : 0.24 : 1.3 | 3.3 V, 4 A |
 |
|
|
|
|
|
|
| 1 | When ordering, please specify packaging code: e.g. B0863-BLD | |
| Packaging: | D = 13"
machine-ready reel 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 10 kHz, 0.1 Vrms, 0 Adc. | |
| 3 | DCR for the secondary is measured with the windings connected in parallel. | |
| 4 | Leakage inductance is for the primary with all other windings shorted. | |
| 5 | Turns ratio is with the secondary windings connected in parallel. | |
| 6 | Output is with the the secondary windings connected in parallel. | |
| 7 | Ambient temperature range: | –40°C to +85°C |
| 8 | Storage temperature range: | Component: –40°C to +85°C T&R packaging: –40°C to +80°C |
| 9 | 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. | |
| 10 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||