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© Coilcraft Inc. 2013

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.

Document 1023

Document 1023 Revised 10/08/13

1. When ordering, please specify a

packaging code:

NA5730-ALD

Packaging: D = 13

″ machine ready reel. EIA-481 embossed plastic

tape (175 parts per full reel).

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 measured at 250 kHz, 0.1 Vrms, 0 Adc.

3. Peak primary current drawn at minimum input voltage.

Part

±10%

min

(µH)

(µH)

pri

sec

bias

drive

max (µH)

pri:sec pri:bias pri:drive

(A)

NA5730-AL_

62

55.8

0.107 0.004 0.122 0.060

2.0

1

: 0.125 1 : 0.29

1

: 0.125

2.1

5.0 V, 4.5 A

Core material Ferrite

Terminations RoHS tin-silver-copper over tin over nickel over phos

bronze. Other terminations available at additional cost.

Weight 11.3 g

Ambient temperature –40°C to +125°C

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 175 per 13

″ reel Plastic tape: 44 mm wide,

0.4 mm thick, 28 mm pocket spacing, 11.9 mm pocket depth

PCB washing Tested with pure water or alcohol only. For other solvents,

see Doc787_PCB_Washing.pdf

• Flyback transformer for Texas Instruments TPS23751 and

TPS23752 PD Controllers

• Input: 33 – 57 V

• 1500 Vrms, one minute isolation from primary and bias to

secondary and drive

Dimensions are in

inches

mm

4. DCR for the primary and the secondary is measured with windings

connected in parallel.

5. Leakage inductance is for the primary, measured with the windings

connected in parallel and the secondary windings shorted.

6. Turns ratio is with the primary windings and secondary windings con-

nected in parallel.

7. Output is with the secondary windings connected in parallel. Output of the

drive winding is 5 V, 10 mA. Output of the bias winding is 12 V, 20 mA.

8. Electrical specifications at 25°C.

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

Primary windings and secondary

windings to be connected in parallel

on PC board

PD Controllers

7

3

4

8

12

9

Bias

Pri

Sec

Drive

11

10

0.450

11,43

1.181

30,00

0.969

24,6

max

0.004 / 0,10

max

Recommended

Land Pattern

0.810

20,57

0.827

21,0

0.118

3,00

0.118

3,00

0.050

1,27

0.028

0,70

max

12

1

1

0.930

23,62

0.130

3,3

Dot indicates pin 1

12