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HA380x Flyback Transformer

for TI TPS23753 PoE Interface

RoHS compliant
  • Developed for Texas Instruments TPS23753 for use at 125 kHz.
  • Windings optimized for hiccup overload protection
Buy Now:
Count Unit price
1 $4.85
200 $3.63
600 $2.49
1200 $2.17
2400 $1.86
4800 $1.71

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
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Typical Application

Works with Texas Instruments TPS23753

Part number Input Voltage Output 1 Power Fsw
Sec Drive Bias
HA3801-BL_ 36 V 57 V 3.3 V , 3 A 5.6 V , 0.01 A 10 V , 0.02 A 10 W 125 kHz
HA3802-BL_ 36 V 57 V 5 V , 2 A 7.5 V , 0.01 A 10 V , 0.02 A 10 W 125 kHz
HA3803-BL_ 36 V 57 V 12 V , 0.83 A 6 V , 0.01 A 10 V , 0.02 A 10 W 125 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   1.2 A (µH)
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Drive Bias Pri Drive Pri : Sec : Drive : Bias
HA3801-BL_ 166.5 150.0 0.735 0.027 0.510 1.050 2.5 0.41 1 : 0.154 : 0.27 : 0.5 1500
HA3802-BL_ 150.0 135.0 0.520 0.028 0.560 0.880 1.9 0.40 1 : 0.25 : 0.31 : 0.44 1500
HA3803-BL_ 166.5 150.0 0.760 0.103 0.475 1.100 1.8 0.25 1 : 0.5 : 0.25 : 0.5 1500
Notes
  1. Output of the secondary is with the windings connected in parallel. 10 W output from 36 – 57 V PoE input or 24 V adapter; 6 W output from 12 V adapter. Bias winding output is 12 V, 20 mA.
  2. When ordering, please specify packaging code: HA3803-BLD.
  3. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms.
  4. DCR for 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 both secondary windings connected in parallel.
  7. 1500 Vrms, one minute isolation, primary and bias to secondary

Termination:

  • RoHS-compliant. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • 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.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

c1173s.gif

Secondary windings to be connected
in parallel on the PC board

Physical characteristics

ha3803-bld.gif

dims_inches_mm-(5).gif

Tape and Reel specification

tapereel_pl-(48).gif
 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_c-(8).gif
200 330 100 13 50,4 44,4 44 28 4 2 9,6 0,4

General specification

Core Material:
Ferrite
Weight:
5.0 – 5.3 g
Packaging:
200 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf.

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