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JA4456-DL Flyback Transformers

for Texas Instruments TPS2375x

RoHS compliant
  • Developed for TI TPS2375x PoE Interface and DC/DC Converters
Buy Now:
Count Unit price
1 $4.92
175 $4.28
700 $3.72
1400 $2.90
2800 $2.49
5000 $2.27

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

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments TPS23752

Input Voltage Output 1 Power Fsw
Sec Bias
36 V 57 V 5 V , 5 A 12 V , 0.02 A 25 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
at 0A (µH) 3
(Tolerance: ±10%)
DCR max (Ω) 5 Leakage
Inductance
max (µH) 6
Turns Ratio 7 Capacitance
max (pF)
Isolation
Voltage (Vrms) 8
Pri Sec Bias Pri : Sec : Bias
JA4456-DL_ 70 0.070 0.0043 0.31 0.615 1 : 0.182 : 0.409 158 1500
Notes
  1. Output of the secondary is with all windings connected in parallel. Bias winding output is 12 V, 20 mA.
  2. When ordering, please specify termination and packaging codes: JA4456-DLD.
  3. Inductance is for the primary, measured at 250 kHz, 0.5 Vrms.
  4. Peak primary current drawn at minimum input voltage.
  5. DCR for the primary and secondary are with the windings connected in parallel.
  6. Leakage inductance is for the primary windings with all the secondary windings shorted.
  7. Turns ratios are with the primary windings and secondary windings connected in parallel.
  8. 1500 Vrms, one minute isolation (hipot) primary and bias to secondary; 500 Vrms isolation primary to bias; 750 Vrms isolation all pins to the core.

Termination:

  • RoHS-compliant  260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • D = 13" machine-ready reel
    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.
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

ja4456s.gif
 

Primary windings and secondary windings
to be connected in parallel on PC board.

Physical characteristics

ja4456d.gif


dims_inches_mm-(6).gif

Tape and Reel specification

tapereel_pl-(57).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-(1).gif
175 330 100 13 50,4 44,4 44 32 4 2 12,0 0,5

General specification

Core Material:
Ferrite
Weight:
11.7 g
Packaging:
175 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick, 32 mm pocket spacing, 12.0 mm pocket depth PCB washing Tested to MIL-STD-202 Method

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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