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Close up of TA7848
3D Model Datasheet Fly-Buck Coupled Inductors

TA7848-AE

Shielded Coupled Inductor

RoHS compliant halogen free
  • Published on TI's LM5160 Dual Output Non-Isolated Fly-Buck™
    reference design (PMP10733)
  • Low leakage inductance and DCR; excellent current handling
  • Based on the Coilcraft LPH miniature inductor series.
    Contact Coilcraft for other turns ratios.
  • RoHS-compliant. 260°C compatible. Matte tin over nickel over silver terminations. Other terminations available at additional cost.
Learn more about  Fly-Buck TM Coupled Inductors

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Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1
(Hover for schematics)
Inductance (µH) 2
(Tolerance: ±20%) 		DCR (Ω) 3 Isolation
Voltage (V) 4 		Leakage
Inductance (µH) 5 		Turns Ratio
L1 max L2 max
TA7848-AE_ 20.0 0.184 0.300 1000 0.8 1 : 1.05

For SEPIC Applications

Part number 1
(Hover for schematics)
Inductance (µH) 2
(Tolerance: ±20%) 		DCR max (Ω) 3 Leakage
Inductance (µH) 5
L1 L2
TA7848-AE_ 20 0.184 0.300 0.82
Notes
  1. When ordering, please specify packaging code: e.g. LPHR8045-223MEC
  2. Inductance is for the primary, measured with the windings connected in parallel at 100 kHz, 0.1 Vrms, 0 Adc.
  3. DCR is measured at 25°C on a micro-ohmmeter. For other operating temperatures, use this DCR at Temperature calculator.
  4. Isolation (hipot) is measured from primary to secondary for one minute.
  5. Leakage inductance is for the primary winding, measured with the secondary winding shorted.

Packaging:

  • C = 7″ machine-ready reel. EIA-481 embossed plastic tape (250 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 C.
  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel).
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Inductance vs Current

Physical characteristics

lphr8045d.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_ap.gif
250 1000* 178/330 60/100 13 22,4 16,4 16 12 4 2 4,83 0,28
* Special order

General specification

Core Material:
Ferrite
Weight:
850 mg
Packaging:
250/7″reel; 1000/13″ reel; Plastic tape: 16 mm wide, 0.28 mm thick, 12 mm pocket spacing, 4.95 mm pocket depth.

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
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.
Refer to Soldering Coilcraft Components before soldering.
Recommended Pick & Place Nozzle:
OD: 8 mm; ID: 4 mm
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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