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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.

Coupled Inductor

Document 848

Document 848 Revised 03/23/12

1. Inductance is measured at 200 kHz, 1.0 Vrms.

2. DCR is for each winding

3. Leakage inductance measured from pin 6 to pin 1 with pins 3 and 4

shorted.

4. Current at which inductance drops 10% from it value without current

5. Electrical specifications at 25°C.

Leakage

Part

number

±10% (µH)

(Ohms)

min (µH)

(A)

JA4637-AL

250

0.10

0.20

2.5

Core material Ferrite

Terminations RoHS tin-silver over tin over nickel over phos bronze.

Other terminations available at additional cost.

Weight 40.2 g

Ambient temperature –40°C to +85°C

Storage temperature Component: –40°C to +85°C.

Packaging: –40°C to +80°C

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 64 per tray

PCB washing Only pure water or alcohol recommended

• Developed for use with Texas Instruments TPS40210 SEPIC

Converter; shown on PMP5143 reference design.

• 1 : 1 coupled inductor

• CanalsobeusedasaflybacktransformerorinZetaapplications

• Winding to winding isolation:100 Vrms

For SEPIC

Applications

Dimensions are in

inches

mm

6

3

1

4

1.10

27,9

1.17

29,8

max

max

max

1.00

25,4

1.00

25,4

0.98

24.9

0.996

25,3

0.15

3,81

0.30

7,62

0.040

1,016

0.031

0,80

0.13

3,3

Æ

Æ

Recommended

PC Board Layout

1

1

6

6

7

7

12

12

Dot indicates pin 1

Parts manufactured prior to February, 2012

may be marked differently.