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© Coilcraft Inc. 2016

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specification subject to change without notice.

Please check web site for latest information.

Push-Pull Transformers

Document 1227-1

Document 1227-1 Revised 03/17/15

For Linear LT3999

Push-Pull DC/DC Driver

Primary

Leakage

Part

Input

voltage (V)

min

max

max (µH)

pri

sec

pri:sec

Output

PA6381-AL_

5.0

139

232

0.52

0.166 (A); 0.201 (B)

1.78

1

: 3.46

12 V, 0.83 A

PA6383-AL_

5.0

29.7

49.5

0.19

0.035 (A); 0.045 (B)

0.067

1

: 1.5

5 V, 1.0 A

PA6384-AL_

12

82.5

137.5

0.336

0.048 (A); 0.061 (B)

0.072

1

: 1.4

12 V, 0.83 A

1. When ordering, specify a

packaging code:

PA6384-ALD

Packaging: D = 13

″ machine ready reel. EIA-481 embossed plastic

tape.

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.

2. Inductance is for Pri A measured on an Agilent/HP 4284 at 100 kHz,

0.1 Vrms, 0 Adc.

3. Leakage inductance measured between pins 1 and 4 at 100 kHz, 0.1Vrms,

0 Adc with pins 2 and 3 connected and with secondary pins shorted.

4. DCR for the scondary is for each winding.

5. Turns ratio is with the primary windings and secondary windings connected

in series.

6. Electrical specifications at 25°C.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

• 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

Core material Ferrite

Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos

bronze.

Weight PA6381-AL, PA6383-AL: 1.9 – 2.1 g; PA6384-AL: 3.8 – 4.0 g

Ambient temperature –40°C to +85°C

Maximum part temperature +125°C (ambient + temp rise)

Storage temperature Component: –40°C to +125°C.

Tape and reel packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Packaging See dimensional drawings

PCB washing Tested to MIL-STD-202 Method 215 plus an additional

aqueous wash. See Doc787_PCB_Washing.pdf.