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TA7618 Transformer

for SiLabs Si88xx 5kV DC-DC Converter

RoHS compliant AEC-Q flag
  • Developed for use with Silicon Labs Si88xx isolated dc-dc-converter reference designs.
    Learn more about these miniature transformers for digital isolators.
  • 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 10.0 × 17.07 × 5.97 mm
  • AEC-Q200 Grade 1 (−40°C to +125°C)
  • Low leakage inductance, only 64 nH
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Typical Application

Works with Silicon Labs Si88xx

Input Voltage Output Power Fsw
3 V 5.5 V 5 V , 0.4 A 2 W 100 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 Sec Pri : Sec
TA7618-AL_ 2.0 4.8 0.031 0.185 0.064 1 : 4 5000
Notes
  1. When ordering, please specify packaging code: e.g.TA7618-ALD
  2. Inductance is for the primary, measured on an Agilent/HP 4284 at 100 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 100 kHz, 0.1Vrms, 0 Adc with pins 8 and 5 shorted.
  6. Isolation (hipot) measured between windings for one minute.

Termination:

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

Packaging:

  • D = 13″ machine ready reel. EIA-481 embossed plastic tape. 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 +135°C
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+135°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

ta7618s.gif

Physical characteristics

ta7618d.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.