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PA638x Push-Pull Transformers

for Linear LT3999

RoHS compliant
  • Developed for Linear LT3999 Low Noise, 1 A, 1 MHz Push-Pull DC/DC Driver with Duty Cycle Control
  • 500 Vrms, one minute isolation primary windings to secondary windings
  • Three output power versions: 1W (12V, 0.083A), 5W (5V, 1A), and 10W (12V, 0.83A)
Buy Now:
Count Unit price
1 $5.26
350 $3.18
700 $1.91
1400 $1.49
2500 $1.28
5000 $1.17

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

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

Typical Application

Works with Linear Technology LT3999

Part number Primary voltage Output
PA6381-ALD 5 V 12 V , 0.08 A
PA6383-ALD 5 V 5 V , 1 A
PA6384-ALD 12 V 12 V , 0.83 A

Specifications

Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
Inductance
min (µH) 2
Inductance
at 0A (µH) 2
DCR max (Ω) 3 Leakage
Inductance
max (µH) 4
Turns Ratio 5 Volt-time
product (V-µs) 6
Pri1 Pri2 Sec Pri1 : Sec
PA6381-ALD 139.0 232.0 0.166 0.201 1.780 0.520 1 : 3.46 26
PA6383-ALD 29.7 49.5 0.035 0.045 0.067 0.190 1 : 1.5 12
PA6384-ALD 82.5 137.5 0.048 0.061 0.072 0.336 1 : 1.4 22
Notes
  1. When ordering, please specify packaging code: PA6384-ALD.
  2. Inductance is for Pri A measured on an Agilent/HP 4284 at 100 kHz, 0.1 Vrms, 0 Adc.
  3. DCR for the secondary is per winding.
  4. Leakage inductance measured between pins 1 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with pins 2 and 3 connected and with secondary pins shorted.
  5. Turns ratio is with the primary windings and secondary windings connected in series.
  6. Volt-time product is for Primary A, between pin 1 and 2.

Termination:

  • RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze.

Packaging:

  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape. Quantities less than full reel available: in tape 
    (not machine ready) or with leader and trailer ($25 charge).
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

pa6381s.gif
Primary and secondary windings to be
connected in series on the PC board

Physical characteristics

pa6381d.gif


dims_inches_mm-(5).gif

Tape and Reel specification

tapereel_pl.gif

 
  Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
Part Number 13" (330 mm) A B C D E W P Po P1 H T part_or_i.gif
PA6381, PA6383 350 330 100 13 38,4 32,4 32 20 4 2 9,16 0,42
PA6384 200 330 100 13 38,4 32,4 32 28 4 2 11,2 0,5

General specification

Core Material:
Ferrite
Weight:
PA6381-AL, PA6383-AL: 1.9 – 2.1 g; PA6384-AL: 3.8 – 4.0 g
Packaging:
PA6381-AL, PA6383-AL 350 per 13″ reel Plastic tape: 32 mm wide, 0.42 mm thick, 20 mm pocket spacing, 9.16 mm pocket depth
PA6384-AL 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth