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TA7788 Flyback Transformer

RoHS compliant AEC-Q flag
  • Developed for use with Silicon Labs Si828x isolated dc-dc-converter reference designs.
  • 5000 Vrms, one minute isolation (hipot), from primary to secondary
  • Designed to meet reinforced insulation class with 8 mm creepage and clearance.
  • Ultra-miniature flyback tranformer, measures only 10 × 17 × 6 mm
  • AEC-Q200 Grade 1 (−40°C to +125°C)
Buy Now:
Count Unit price
1 $4.76
700 $2.31
1400 $1.92
2500 $1.74
5000 $1.58

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

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

Typical Application

Works with Silicon Labs Si828x

Input Voltage Output Power Fsw
Sec1 Sec2
7 V 24 V 15 V , 0.13 A 9 V , 0.13 A 2 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
Inductance
at 0A (µH) 2
(Tolerance: ±5%)
Isat (A) 3 DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio Isolation
Voltage (Vrms) 6
Pri Sec1 Sec2 Pri : Sec1 : Sec2
TA7788-AL_ 25.0 1.4 0.490 0.730 0.492 0.554 1 : 1.25 : 0.75 5000
Notes
  1. When ordering, please specify packaging code: e.g.TA7788-ALD
  2. Inductance is for the primary, measured on an Agilent/HP 4284 at 250 kHz, 0.1 Vrms, 0 Adc.
  3. DC current that causes an inductance drop of 30% (typ) from its value without current
  4. DCR is measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  5. Leakage inductance measured between pins 2 and 3 at 250 kHz, 0.1Vrms, 0 Adc with all secondary pins shorted.
  6. 5000 Vrms, one minute isolation (hipot), from primary to secondary.

Termination:

  • RoHS-compliant. 260°C compatible. RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze.

Packaging:

  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape (700 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel
    In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +160°C
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+160°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

ta7788s.gif

Physical characteristics

ta7788d.gif

dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.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_f.gif
700 330 100 13 38,4 32,4 32 16 4 2 5,72 0,40

General specification

Core Material:
Ferrite
Weight:
1.1 g
Packaging:
700 per 13″ reel Plastic tape: 32 mm wide, 0.40 mm thick, 16 mm pocket spacing, 5.72 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. More info.